MP3336GC [MPS]
Dual-Channel, Flash LED Driver with 2A/Ch and I2C Interface;
| 型号： | MP3336GC |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | Dual-Channel, Flash LED Driver with 2A/Ch and I2C Interface |
| 文件： | 总27页 (文件大小：748K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP3336
Dual-Channel, Flash LED Driver
with 2A/Ch and I2C Interface
The Future of Analog IC Technology
DESCRIPTION
FEATURES
2.7V~5.5V Input Voltage
The MP3336 is a compact, dual-channel, high-
power, flash, LED driver that can drive up to 2A in
flash mode for each LED. It is usually applied for
camera phones to improve image and video
quality in low-light environments. The MP3336
operates with a selectable 1/2/3/4MHz switching
frequency and uses a synchronous, current-mode
PWM boost converter to regulate the LED current
with two high-current sources. The MP3336
provides high efficiency and an optimized solution
for smaller PCB spaces.
1/2/3/4MHz Selectable Max Switching
Frequency
Switching Frequency Fold-back Function
400kHz I2C Compatible Interface
Standby/Flash/Assist/Torch/Indicator/5V DC
Modes
Flash Mode
Up to 2A/Ch Programmable Current with
±7% Accuracy for Each LED, 7.84mA/Step
Assist/Torch Mode
The MP3336 features a standard I2C interface,
dual LED channels, rich protection modes, and
high power density and performances. The
MP3336 can also support flash, assist, torch,
indicator, and 5V DC modes.
Up to 319mA/Ch Programmable Current
with ±7% Accuracy for Each LED,
1.25mA/Step
Indicator Mode
Works in 31.5kHz PWM Dimming Mode with
2/16, 3/16, 4/16, 5/16 Duty Cycle
Used for Blinking and 128/256/512ms
Selectable Blinking Time
The cathodes of the dual-flash LED are
referenced to GND, which is better for improving
thermal performance in layout. The MP3336 is
available in a WLCSP-20 (1.6mmx2.0mm)
package.
5V DC Mode
Output Constant 5V DC Voltage
1A to 4.2A Programmable Input DC Current
Limit Protection
External Torch/Strobe/TX Pin
LED Forward-Voltage Balance to Improve
Efficiency
VIN to VOUT Disconnection Function
Low-Battery Voltage Protection
LED Short/Open Protection
VOUT-GND Short Protection
Over-Voltage Protection (OVP)
Over-Temperature Protection (OTP)
Input Under-Voltage Lockout (UVLO)
Protection
Available in a WLCSP-20 (1.6mmx2.0mm)
Package
APPLICATIONS
Smartphone Flash LED Application
Cameras for Tablets
Digital Still Camera
All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For
MPS green status, please visit the MPS website under Quality
Assurance. “MPS” and “The Future of Analog IC Technology” are registered
trademarks of Monolithic Power Systems, Inc.
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
1
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
TYPICAL APPLICATION
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
2
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
ORDERING INFORMATION
Part Number*
Package
Top Marking
MP3336GC
WLCSP-20 (1.6mmx2.0mm)
See Below
* For Tape & Reel, add suffix –Z (e.g. MP3336GC–Z)
TOP MARKING
EF: Product code of MP3336GC
Y: Year code
LLL: Lot number
PACKAGE REFERENCE
WLCSP-20 (1.6mmx2.0mm)
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
3
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
ABSOLUTE MAXIMUM RATINGS (1)
VIN, VSW, VOUT..................................-0.3V to +6V
NTC ......................................-0.3V to VIN + 0.3V
All other pins...................................-0.3V to +6V
Junction temperature................................150°C
Lead temperature .....................................260°C
Thermal Resistance (4)
WLCSP-20 (1.6mmx2.0mm) …55 ... .0.5.. °C/W
θJA θJC
NOTES:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ (MAX), the junction-to-
ambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX)-TA)/θJA. Exceeding the maximum allowable power
dissipation produces an excessive die temperature, causing
the regulator to go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
(2)
Continuous power dissipation (TA = 25°C)
WLCSP-20 (1.6mmx2.0mm)...................... 2.3W
Recommended Operating Conditions (3)
Supply Voltage (VIN)........................2.7V to 5.5V
Operating junction temp. (TJ)... -40°C to +125°C
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
4
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
ELECTRICAL CHARACTERISTICS
VIN = 3.6V, TA = 25°C, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max Units
Supply
Operating input voltage
VIN
2.7
5.5
V
V
Input UVLO threshold
Input UVLO hysteresis
VIN_UVLO
Rising edge
2.35
160
mV
Standby current
IQ_STANDBY VIN = 2.7V to 5.5V, I2C active
23
2
μA
μA
Shutdown current
IQ_SD
IQ
VIN = 2.7V to 5.5V, EN = low
VIN = 3.6V, no switching,
pass mode
Operating quiescent current
1.5
mA
Switching Regulator
Switching frequency
Minimum on time
fs
SW_FS = 11
0.9
1
1.1
MHz
ns
tON_MIN
RDSON_N
RDSON_P
VOUT_5V
68
45
60
5
NMOS on resistance
PMOS on resistance
Constant DC output voltage
VIN = 3.6V
VIN = 3.6V
5V DC mode
mΩ
mΩ
V
Code setting = 10,
max duty cycle
Inductor current limit
ILIMIT
3.5
A
LED Driver
Flash mode,
value setting = 00000000
Flash mode,
value setting = 00100110
Assist/torch mode,
value setting = 00000000
Assist/torch mode,
value setting = 11110000
0
mA
mA
mA
mA
Flash current setting
Torch current setting
ILED_FLASH
279
279
300
0
321
321
ILED_TORCH
300
Current = 1250mA(5)
Current = 200mA
TUP_I = 111
350
150
1
mV
mV
μs
Current source headroom
voltage
VHD
Current ramp-up step time
tRAMP_UP
TUP_I = 000
8
μs
Current ramp-down step
time
LED1/2 load balance voltage
hysteresis
tRAMP_DOWN
VLED_HYS
1
μs
130
mV
Digital Input
Input logic low voltage
Input logic high voltage
0.4
V
V
1.2
Strobe/torch/TX pull-down
resistor
250
kΩ
NOTE:
5) Guaranteed by design.
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
5
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
ELECTRICAL CHARACTERISTICS (continued)
VIN = 3.6V, TA = 25°C, unless otherwise noted.
Parameters
Symbol
Condition
Min
190
Typ
Max Units
Protection
Flash time-out time
Input DC current limit
tTIMEOUT
ILIMIT_IN
Time setting code = 0001
Current setting code = 0010
200
1.5
210
ms
A
Over-voltage threshold
VOVP
5.335
5.5
1
5.665
V
V
LED1/2 short detection
voltage
VLED_ST
VOUT short blanking time
PMOS charge current
TOUT_ST
VOUT < 1V
VOUT = 1V
5
ms
mA
mV
°C
250
110
150
130
LED1/2 open detection
voltage
VLED_OP
Tj_SD
Thermal shutdown threshold
Adaptive thermal threshold
°C
Code setting = 001
Code setting = 111
Code setting = 000
Code setting = 110
0.6
1.02
3
V
V
V
V
NTC detection voltage
VNTC
Low battery threshold
VBAT_LOW
3.6
I2C Interface
Input logic low
VIL
VIH
0.4
V
V
Input logic high
Output logic low
SCL clock frequency
SCL high time
1.3
VOL
ILOAD = 3mA
0.4
V
FSCL
400
kHz
μs
μs
ns
μs
μs
μs
μs
THIGH
TLOW
TSU,DAT
THD,DAT
TSU,STA
THD,STA
TBUF
0.6
1.3
100
0
SCL low time
Data setup time
Data hold time
0.9
Setup time for repeated start
Hold time for start
0.6
0.6
1.3
Bus free time between a
start and a stop condition
Setup time for stop condition
Rise time of SCL and SDA
Fall time of SCL and SDA
TSU,STO
TR
0.6
μs
ns
ns
20+0.1*CB
20+0.1*CB
300
300
TF
Pulse width of suppressed
spike
Capacitance bus for each
bus line
TSP
CB
0
50
ns
400
pF
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
6
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 3.6V, L = 1.1µH, I1/2_TOR = 300mA, I1/2_FL = 400mA, I1/2_TX = 400mA, FL_TIM = 200ms,
two channels, unless otherwise noted.
V
V
V
SW
SW
SW
2V/div.
2V/div.
2V/div.
V
OUT
V
V
OUT
OUT
2V/div.
2V/div.
2V/div.
I
L
200mA/div.
I
I
L
L
200mA/div.
200mA/div.
I
I
I
LED
LED
LED
200mA/div.
200mA/div.
200mA/div.
V
V
SW
SW
V
SW
2V/div.
2V/div.
2V/div.
V
OUT
2V/div.
V
V
STR
STR
I
L
2V/div.
2V/div.
200mA/div.
I
I
L
L
500mA/div.
500mA/div.
I
LED
I
I
LED
LED
200mA/div.
500mA/div.
500mA/div.
V
V
V
SW
SW
SW
2V/div.
2V/div.
V
5V/div.
2V/div.
TX
V
OUT
5V/div.
V
STR
2V/div.
I
L
2A/div.
I
I
L
L
1A/div.
500mA/div.
I
I
I
LED1
LED
LED
1A/div.
1A/div.
500mA/div.
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
7
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 3.6V, L = 1.1µH, I1/2_TOR = 300mA, I1/2_FL = 400mA, I1/2_TX = 400mA, FL_TIM = 200ms,
two channels, unless otherwise noted.
V
V
SW
SW
V
SW
2V/div.
2V/div.
2V/div.
V
V
OUT
OUT
2V/div.
2V/div.
V
OUT
I
2V/div.
L
500mA/div.
I
I
L
LED1
200mA/div.
100mA/div.
I
I
I
OUT
LED2
LED
20mA/div.
100mA/div.
500mA/div.
V
SW
V
V
SW
SW
2V/div.
2V/div.
2V/div.
V
OUT
2V/div.
V
OUT
2V/div.
V
OUT
I
2V/div.
I
L
L
I
500mA/div.
L
500mA/div.
500mA/div.
I
I
I
LED
LED
LED
1A/div.
500mA/div.
500mA/div.
V
SW
V
OUT
2V/div.
2V/div.
V
OUT
V
2V/div.
NTC
2V/div.
I
L
500mA/div.
I
L
200mA/div.
I
LED
I
LED
500mA/div.
200mA/div.
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
8
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
PIN FUNCTIONS
Pin #
Name Description
A4, B4
LED1 Current source for LED1. Connect the anode of the LED to LED1.
LED2 Current source for LED2. Connect the anode of the LED to LED2.
C4, D4
E4
Synchronization input signal for RF transmission signal. TX is pulled low internally if
TX
left floating.
A3, B3,C3 VOUT Boost converter output.
D3
E3
EN
STR
SW
IC enable.
Strobe signal input. STR synchronizes the flash pulse to the image capture. STR is
pulled low internally if left floating.
A2, B2
C2
Boost converter switching node.
TOR Torch mode input signal. TOR is pulled low internally if left floating.
I2C interface clock signal.
D2
SCL
E2
SDA I2C interface data.
PGND Power GND.
A1, B1
C1
AGND Analog GND.
Input supply. VIN provides power for the internal power and logic circuits. VIN must be
bypassed locally.
D1
E1
VIN
LED temperature detection. Connect NTC to a negative thermal coefficient resistor
when in use. Float NTC when not in use.
NTC
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
9
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
BLOCK DIAGRAM
Figure 1: Functional Block Diagram
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
10
MP3336 – DUAL CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
When the device is enabled by LED_EN, the
synchronous PMOS works with a 250mA
OPERATION
The MP3336 is a dual-channel, LED driver with
I2C interface that supports image capture for
camera flash. The MP3336 can work in flash
mode, assist mode, torch mode, indicator mode,
and fixed 5V DC output mode. Table 1 shows
how to set these operation modes.
current source first to charge the output
capacitor until VOUT rises above 2.3V. The
device changes to boost switching mode if the
voltage across the current source is less than
the target reference, which is set by VTH_PAS.
If VIN is very close to VOUT, the IC switches to
boost switching mode and pass mode
automatically to minimize power loss. In pass
mode, the synchronous PMOS is fully turned on.
During the current start-up, the current ramps
up step-by-step smoothly until the target setting
current is reached.
LED Driver Operation
The MP3336 is a synchronous, current-mode,
PWM, boost converter that can work with
1/2/3/4MHz. The MP3336 regulates the boost
loop by detecting and controlling the headroom
voltage across the current source (VOUT-
VLED1/2).
Table 1: Operation Mode Setting
Configuration
LED1/2_EN STR_MOD
Mode
TX
X
X
X
0
1
X
X
TOR
High
X
X
X
X
X
X
STR(6)
Float
Float
X
High
High
X
5V_MOD
LED_MOD
1
1
1
1
1
1
X
X
X
X
1
1
0
X
X
X
X
X
X
1
00
10
01
11
11
11
X
Torch
Assist
Indicator
Flash
Flash
Flash
5V
X
X
NOTE:
6) STR is high active when STR_POL = 1. STR is low active when STR_POL = 0. Table 1 is based on STR_POL = 1.
Standby Mode
By default, if VIN is higher than UVLO and EN is
pulled high, the device enters standby mode. In
this mode, only the I2C is active and ready to
communicate with the host.
Torch Mode
In standby mode, if TOR goes from low to high,
the device changes to torch mode and the
current ramps up step-by-step to the target
current after setting the LED1/2_EN bits to 1.
The target current for the LED can be set
through registers I1_TOR and I2_TOR. The
ramp-up slew rate can be set by the register
TUP_I. The current can be disabled by pulling
TOR to low or by setting the LED1/2_EN bits to
0. These two bits control the two LED current
Figure 2: Torch Mode
Assist Mode
To enter assist mode, set the LED_MOD
register to 10 and LED1/2_EN to 1. The current
ramps up to the target value, which is set by
I1_TOR and I2_TOR. The ramp-up slew rate
can be set by register TUP_I. The current can
be disabled by switching to standby mode or by
sources respectively. By pulling TOR low, the
LED1/2_EN and LED_MOD bits reset to the
default automatically if LED_SD is 0 (see Figure
2).
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
11
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
setting the LED1/2_EN bits to 0. These two bits
control the two LED current sources
respectively (see Figure 3).
works in indicator mode during the blinking time,
and the LED current source is disabled during
the blinking time (see Figure 5). The blinking
time is set by the TBK0-1 bits in register 0FH.
Figure 5: Blinking Time
Flash Mode
The device can work in flash mode in three
ways: hardware and level trigger mode,
hardware and edge trigger mode, and software
and edge trigger mode. All of the below
description are based on bit STR_POL = 1. The
default high level is active for STR. When
STR_POL is set to 0, STR is low active.
Figure 3: Assist Mode
Indicator Mode
When LED_MOD is set to 01 and LED_EN1/2
is set to 1, the MP3336 enters indicator mode,
which provides a low-current output (see Figure
4). In this mode, the driver current sources work
in a 31.5kHz PWM dimming mode. The current
amplitude can be set by I1_TOR and I2_TOR,
while the indicator current step ramps up more
quickly at a rate of 7.84mA/step, compared to
torch mode’s ramp-up rate of 1.25mA/step. The
final amplitude in this mode can be calculated
with Equation (1):
1. Hardware and Level Trigger Mode
In this mode, STR_MOD = 1, STR_LV = 1,
LED1/2_EN = 1, LED_MOD = 11. The flash
current begins to ramp up after STR goes high.
The current is set by I1_FL and I2_FL, and the
ramp-up time is set by TUP_I. The flash current
ends when STR is pulled low or when the flash
timer ends. After flash, LED_MOD is reset to
standby mode, and LED1/2_EN is set to 0 if
LED_SD = 0. If LED_SD = 1, LED_MOD and
LED1/2_EN are not reset. The LED1 and LED2
current sources are controlled by the LED1_EN
and LED2_EN bits respectively. If the STR is
pulled low before the flash timer ends, the flash
current shuts down at the STR falling edge (see
Figure 6). Conversely, if the flash timer set by
FL_TIM ends before STR goes low, the flash
current terminates immediately. The time-out
indicator bit FT_TO is set to 1 and is not
cleared until it is read back or the input power
resets (see Figure 7).
7.84mA x I1/2_TOR
(1)
The duty cycle is set by the INDI_PWM register.
When disabled, switch to standby mode or set
the LED1_EN and LED2_EN bits to 0.
Figure 4: Indicator Mode
In indicator mode, the MP3336 can also work in
blinking mode. If blinking is enabled, the IC
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
12
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
LED1 and LED2 current sources are controlled
by the LED1_EN and LED2_EN bits
respectively (see Figure 8).
Figure 6: Hardware and Level Trigger Flash
Mode without Time-Out
Figure 8: Hardware and Edge Trigger Flash Mode
3. Software and Edge Trigger Mode
In this mode, without STR, STR_MOD = 0,
LED1/2_EN = 1, and LED_MOD = 11. The
current is set by I1_FL and I2_FL, and the
ramp-up time is set by TUP_I. The flash current
ends when the flash timer set by FL_TIM ends.
After the flash, the LED_MOD is reset to
standby mode if LED1/2_EN is set to 0 with
LED_SD = 0. If LED_SD = 1, the LED_MOD is
not reset if ILED1/2_EN is set to 0. The LED1
and LED2 current sources are controlled by the
LED1_EN and LED2_EN bits respectively (see
Figure 9).
Figure 7: Hardware and Level Trigger Flash
Mode with Time-Out
2. Hardware and Edge Trigger Mode
In this mode, STR_MOD = 1, STR_LV = 0,
LED1/2_EN = 1, and LED_MOD = 11. The flash
current begins to ramp up after STR goes high.
The current is set by I1_FL and I2_FL, and the
ramp-up time is set by TUP_I. The flash current
ends when the flash timer set by FL_TIM ends.
After the flash, the LED_MOD is reset to
standby mode, and LED1/2_EN is set to 0 if
LED_SD = 0. If LED_SD = 1, the mode and
LED_MOD and LED1/2_EN are not reset. The
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
13
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
Setting Time
Figure 11: Assist Mode to Flash Mode
Figure 9: Software and Edge Trigger Flash Mode
5V DC Output Mode
Torch Mode to Flash Mode
If 5V_MOD is set to 1, the device can work in a
fixed 5V output mode, and the control loop is
taken over by the voltage loop (see Figure 12).
The LED current sources can still output a
current if the mode conditions are met as
described above. Care must be taken to ensure
that the thermal condition is normal, since 5V
directly powers the LED. It is recommend to set
LED1/2_EN to 0 during 5V mode.
The MP3336 can switch to flash mode from
torch mode directly when STR goes from low to
high if STR_MOD = 1. After flash, the operation
functions the same way as in flash mode (see
Figure 10).
Setting Time
Figure 10: Torch Mode to Flash Mode
Assist Mode to Flash Mode
Figure 12: 5V DC Mode
Maximum Switching Frequency Setting
During assist light mode, the device can switch
to flash mode from assist mode directly when
STR goes from low to high if STR_MOD = 1.
After flash, the operation functions the same
way as in flash mode (see Figure 11).
The maximum switching frequency can be
selected by the SW_FS bits when working in
boost mode. 1 /2 /3 /4MHz can be selected to
optimize efficiency.
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
14
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
Switching Frequency Fold-back
1. TX is High
When the max switching frequency is set to
2/3/4MHz in switching mode, if the voltage
across the current source is larger than the
value set by the register bits VTH_PAS, the IC
switches to 1MHz to improve efficiency and EMI.
With 1MHz, if the voltage across the current
source is still larger than the value set by the
register bits VTH_PAS, the IC can stretch the
frequency down until it reaches about 100kHz
with FS_SD = 0. If the LED load becomes
lighter and the input voltage increases further,
the IC switches to pass mode from 100kHz.
With FS_SD = 1, the IC switches directly to
pass mode from 1MHz.
During flash mode, if TX goes from low to high,
the flash current drops to the current set by
I_TX in under 5µs and sets the FT_TX bit to 1.
If TX goes low, the current ramps up to the
flash current again (see Figure 14).
Load Balancing
To improve efficiency, the device provides load
balancing to prevent unbalanced forward
voltage drops between the dual LEDs (see
Figure 13). To enable this function, the bit
BAL_ON must be set to 1. Supposing VLED1 >
VLED2 + VLED_HYS, the LED1 current drops step
by step while the LED2 current rises step by
step. Finally, |VLED1 - VLED2| < VLED_HYS or
ILED1 < 90%ILED2.
Figure 14: Flash Mode with TX Pulse
However, the maximum adjustment range of
each LED current is limited to 10%. Because of
the limitation, if there is a large difference
between VLED1 and VLED2, the load balance
function cannot make |VLED1 - VLED2| drop
below VLED_HYS, but it is still helpful to further
reduce the voltage difference and improve
efficiency.
2. Input DC Current Limit is Triggered
If the input DC current limit set by IL_DC
register is not sufficient, a current reduction
may occur. The actual current in the IFL_ACT
register can be read back during flash.
Input DC Current Limit Protection
The MP3336 uses the input DC current limit
protection to avoid drawing too much current
from the battery. This current limit can be
programmed by the IL_DC register from 1A to
4.2A with 250mA/step when IL_DC < 3A and
with 300mA/step when IL_DC > 3A. If the input
current hits the input current limit threshold, the
LED output current stops and holds until the
input current limit drops below the current limit
threshold. The fault bit FT_IDC is set to 1 if the
input current limit is triggered. The fault bit
remains until it is read back or the input power
is reset. The input current limit protection is
useful in boost mode because it senses the
current of the low-side MOSFET.
Conversely, if VLED2 > VLED1 + VLED_HYS, the
operation is the same.
Figure 13: Load Balancing
LED Output Current Reduction
When the MP3336 works in flash mode, output
current reduction may occur due to the
following three conditions:
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
15
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
3. Low Battery Voltage Threshold Is
Triggered
During flash pulse, if the battery voltage drops
below the threshold set by VBL_RUN, the
current reduces step by step until the battery
voltage rises up to the set low battery voltage
threshold. The actual current in the IFL_ACT
register can read back during flash and the
minimum current caused by the current
reduction in IFL_MIN can be read back after
flash.
Low Battery Voltage Protection
Figure 15: Pre-Flash under Low Battery
NTC Detection
The device provides low battery voltage
protection in flash mode in the following ways:
If the register NTC_WD is set to enable NTC
detection, the NTC sources a constant 35µA
current. If the voltage across the NTC resistor
drops below the threshold set by NTC_WD, the
internal fault bit FT_LEDHOT is set to 1 and the
modes are reset to standby mode if LEDT_SD
= 1. If LEDT_SD = 0, the mode setting is not
reset after the fault bit is set. The fault bit
remains until it is read back or the power resets.
It is recommended to float NTC if this function is
not being used.
1. Before flash, if VBL_SD = 1, and the input
voltage is lower than the threshold set by
VBL_RUN, the device remains disabled and
sets the fault bit FT_VBATL to 1. If VBL_SD
= 0, the device ramps to the current set by
I_TX and sets the fault bit FT_VBATL to 1.
The fault bit is cleared after it is read back
or when the input power resets.
2. During flash start-up, if the input voltage is
lower than the threshold set by VBL_RUN,
the current stops ramping. The fault bit
FT_VBATL is set. During flash pulse, if the
input voltage is lower than the threshold set
by VBL_RUN, the current ramps down step
by step. The fault bit is set until it is read
back or when the input power resets.
Figure 16: NTC Detection
After flash, the minimum current caused by
the current reduction can be read back
through the IFL_MIN register. The IFL_MIN
value holds until the next flash occurs or
until the power resets. The actual current
can be read back through IFL_ACT during
flash. This function is useful for determining
how much flash current can be drawn from
the battery (see Figure 15).
VOUT-GND Short Protection
If VOUT < 1V, the device stops switching and
disconnects the synchronous PMOS to prevent
a large current from being drawn from the
battery. Set the FT_VOSC bit to 1 and reset the
mode setting. The fault bit remains until it is
read back or the power resets.
LED1/2-GND Short Protection
If LED1 < 1V and ILED1 > 5mA, or LED2 <
1Vand ILED2 > 5mA, the IC marks off the
current source and sets the fault bit FT_LEDSC
but continues switching. If both current sources
are marked off, the device stops switching and
the mode setting is reset. The fault bit
FT_LEDSC is 1 until it is read back or the
power resets. If LED_EN1 is set to 0, the
feedback of the current source 1 is not involved
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
16
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
in the loop control, and fault detections on this
channel are also disabled.
I2C Interface Register Description
I2C Chip Address
LED1/2 Open Protection
After the start condition, the I2C-compatible
master sends a seven-bit address followed by
an eighth read (Read: 1) or write (Write: 0) bit.
The following bit indicates the register address
to or from which the data is written or read. The
I2C address of the MP3336 is 0x27.
If VOUT - VLED1/2 < 110mV and VOUT > 5.5V,
the IC marks off the fault current source and
sets the fault bit FT_OVP but continues
switching. If both current sources are marked
off, the device stops switching and the mode
setting is reset. The fault bit FT_OVP is 1 until it
is read back or the power resets. If LED_EN1 is
set to 0, the feedback of the current source 1 is
not involved in loop control, and fault detection
on this channel is also disabled.
I2C Compatible Device Address
Output Over-Voltage Protection (OVP)
If VOUT > 5.5V, the device stops switching and
resumes normal condition until VOUT drops
below 5.2V. The fault bit FT_OVP is 1 until it is
read back or the power resets.
Junction Over-Temperature Protection
If LED_OTAD = 1, the flash current drops to the
current set by I_TX when TJ > 130°C. The fault
bit FT_OTP is set to 1. If TJ > 150°C, the device
stops switching and resets LED_MOD and
LED_EN1/2. The fault bit FT_OTP must be
cleared to 0 by a read-back or a power reset.
Time-Out Protection
If the device works in one of the flash modes—
hardware and level trigger mode—time-out
protection may be triggered. When the STR
input pulse is longer than the flash timer set by
FL_TIM, the device is disabled once the timer
ends. The device stops switching and resets
the mode setting, and the fault bit is 1 until it is
read back or the power is reset before
restarting.
Under-Voltage Lockout (UVLO) Protection
If VIN drops below the UVLO threshold, the
device stops and all of the registers are reset to
default.
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
17
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
Register Mapping
Add
Reg
Chip ID
Mode
D7
D6
D5
D4
D3
D2
D1
D0
00H
DEV_ID4
DEV_ID3
DEV_ID2
DEV_ID1
DEV_ID0
REV_ID2
REV_ID1
REV_ID0
01H
02H
03H
STR_LV
NTC_WD2
FL_TIM3
STR_MOD
NTC_WD1
FL_TIM2
STR_POL
NTC_WD0
FL_TIM1
LED1_EN
IL_PEAK1
FL_TIM0
LED2_EN
IL_PEAK0
LED_SD
LED_MOD1
FS_SD
LED_MOD0
BAL_ON
5V_MOD
NA
Peak
current
Flash
timer
LEDT_SD
SW_FS1
SW_FS0
Low
04H
battery
voltage
VBL_RUN2 VBL_RUN1 VBL_RUN0
LED_OTA
VBL_SD
IL_DC3
IL_DC2
IL_DC1
IL_DC0
05H
06H
Indicator
TUP_I2
TUP_I1
TUP_I0
I1_FL4
VTH_PAS 1
I1_FL3
VTH_PAS2
I1_FL2
INDI_PWM1
I1_FL1
INDI_PWM0
I1_FL0
D
LED1
flash
I1_FL7
I1_FL6
I1_FL5
current
LED2
flash
I2_FL7
I2_FL6
I2_FL5
I2_FL4
I2_FL3
I2_FL2
I2_FL1
I2_FL0
07H
current
TX1MAS
K current
TX2MAS
K current
Actual
flash
Minimum
flash
LED1
torch
LED2
torch
Fault
indication
Fault
indication
08H
09H
0AH
0BH
0CH
0DH
0EH
0FH
I1_TX7
I2_TX7
I1_TX6
I2_TX6
I1_TX5
I2_TX5
I1_TX4
I2_TX4
I1_TX3
I2_TX3
I1_TX2
I2_TX2
I1_TX1
I2_TX1
I1_TX0
I2_TX0
IFL_ACT7
IFL_MIN7
I1_TOR7
I2_TOR7
FT_VBATL
TBK1
IFL_ACT6
IFL_MIN6
I1_TOR6
I2_TOR6
FT_OVP
TBK0
IFL_ACT5
IFL_MIN5
I1_TOR5
I2_TOR5
FT_VOSC
NA
IFL_ACT4
IFL_MIN4
I1_TOR4
I2_TOR4
FT_LEDSC
NA
IFL_ACT3
IFL_MIN3
I1_TOR3
I2_TOR3
FT_OTP
BAL_1AB2
IFL_ACT2
IFL_MIN2
I1_TOR2
I2_TOR2
FT_TO
IFL_ACT1
IFL_MIN1
I1_TOR1
I2_TOR1
FT_TX
IFL_ACT0
IFL_MIN0
I1_TOR0
I2_TOR0
FT_IDC
BAL_2AB1
FT_LEDHOT
FT_LEDOP
Table 2: Chip ID Register
Addr: 0x00
Bit
2:0
7:3
Bit Name
Access
Default
Description
Revision ID.
Device ID.
REV_ID
DEV_ID
R
R
011
00111
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
18
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
Table 3: Mode Setting Register
Addr: 0x01
Bit
Bit Name
Access
Default
Description
Flash mode trigger mode with strobe pin signal.
0 = edge sensitive
7
STR_LV
RW
1
1 = level sensitive
Strobe pin enable bit.
0 = software enable
1 = hardware enable
Strobe pin signal input active polarity.
0 = active low
6
5
4
3
STR_MOD
STR_POL
LED1_EN
LED2_EN
RW
RW
RW
RW
1
1
0
0
1 = active high
LED1 current source enable bit.
0 = LED current sink disable
1 = enable
LED2 current source enable bit.
0 = LED current sink disable
1 = enable
Device mode setting bits.
00 = standby/torch mode
01 = indicator mode
10 = assist mode
11 = flash mode
5V DC output enable bit.
0 = disable
2:1
0
LED_MOD
5V_MOD
RW
RW
00
0
1 = enable
Table 4: NTC Detection and Current Limit Setting Register
Addr: 0x02
Bit
Bit Name
Access
Default
Description
NTC pin detection window.
000 = off
001 = 0.6V
010 = 0.67V
7:5
NTC_WD
RW
000
……
111 = 1.02V
Inductor current limit setting bits.
00 = 2A
4:3
2
IL_PEAK
FS_SD
RW
RW
01
0
01 = 2.5A
10 = 3.5A
11 = 4.5A
Disable switching frequency stretching down from 1MHz if VIN is
close to VOUT.
0 = enable FS stretching down function
1 = disable FS stretching down function
Load balance matching enable bit.
0: LED voltage mismatch auto-balance disabled
1: LED voltage mismatch auto-balance enabled
1
0
BAL_ON
NA
RW
RW
0
NA
Reserved.
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
19
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
Table 5: Flash Timer Setting Register
Addr: 0x03
Bit
Bit Name
Access
Default Description
Flash timer setting bits. 100ms to 1600ms, 100ms/step.
0000 = 100ms
7:4
FL_TIM
RW
0001
0001 = 200ms
…….
1111 = 1600ms
LED_MOD and LED1/2_EN resetting control bit.
0 = reset LED_MOD and LED1/2_EN to default value
after flash or torch
3
2
LED_SD
RW
RW
0
0
1 = no reset
LED_MOD and LED1/2_EN resetting control bit when
NTC fault occurs.
0 = no reset and device continues
1 = reset and device stops
Max Switching frequency setting bits.
00 = 4MHz
LEDT_SD
1:0
SW_FS
RW
00
01 = 3MHz
10 = 2MHz
11 = 1MHz
Table 6: Low Battery Voltage Setting Register
Addr: 0x04
Bit
Bit Name
Access
Default Description
Low battery voltage setting bits. If VIN drops blow this
voltage during start-up, the current ramping stops. If,
during flash current pulse, the current is decreased until
VIN is higher than its threshold. It works only in flash
mode. 0.1V per step.
000 = 3V
7:5
VBL_RUN
RW
111
001 = 3.1V
……
110 = 3.6V
111 = disabled
1 = device disabled when VIN is less than the threshold
4
VBL_SD
IL_DC
RW
RW
1
set by VBL_RUN before flash
0 = enable and current ramps up to current set by I_TX
Input DC current limit setting bits. 1A to 4.2A.
1A to 3A: 250mA/step
0000 = 1A
......
1000 = 3A
3:0
0100
>3A: 300mA/step
1001 = 3.3A
......
1100 = 4.2A
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
20
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
Table 7: Indicator Register
Addr: 0x05
Bit
Bit Name
Access
Default
Description
Adaptive thermal flash current control bit.
1 = current reduces to the current set by I_TX when TJ >
130°C
7
LED_OTAD
RW
0
0 = disable when TJ > 150°C
Current ramp-up time per step.
000 = 8µs
6:4
3:2
1:0
TUP_I
RW
RW
RW
001
01
001 = 7µs
……
111 = 1µs
Define the threshold when FS drops down to 1MHz or
switches to pass mode from boost mode.
00 = 300mV
01 = 450mV
10 = 600mV
11 = 750mV
PWM duty cycle of 31.5kHz in indicator mode.
00 = 2/16
01 = 3/16
10 = 4/16
11 = 5/16
VTH_PAS
INDI_PWM
00
Table 8: LED1 Flash Current Setting Register
Addr: 0x06
Bit
Bit Name
Access
Default
Description
LED1 flash current setting bits. 0 to 2000mA,
7.84mA/step (default 00110011 = 400mA).
7:0
I1_FL
RW
00110011 00000000 = 0mA
......
11111111 = 2000mA
Table 9: LED2 Flash Current Setting Register
Addr: 0x07
Bit
Bit Name
Access
Default
Description
LED2 flash current setting bits. 0 to 2000mA,
7.84mA/step (default 00110011 = 400mA).
7:0
I2_FL
RW
00110011 00000000 = 0mA
......
11111111 = 2000mA
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
21
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
Table 10: TX Current Setting Register for LED1
Addr: 0x08
Bit
Bit Name
Access
Default
Description
Define the LED1 flash current in flash mode if TX is
high. 0 to 2000mA, 7.84mA/step (default 00110011 =
400mA).
00000000 = 0mA
......
7:0
I1_TX
RW
00110011
11111111 = 2000mA
Table 11: TX Current Setting Register for LED2
Addr: 0x09
Bit
Bit Name
Access
Default
Description
Define the LED2 flash current in flash mode if TX is
high. 0 to 2000mA, 7.84mA/step (default 00110011 =
400mA).
00000000 = 0mA
......
7:0
I2_TX
RW
00110011
11111111 = 2000mA
Table 12: Actual Flash LED Current Register
Addr: 0x0A
Bit
Bit Name
Access
Default
Description
The actual flash current in flash mode. 0 to 2000mA,
7.84mA/step.
7:0
IFL_ACT
R
00000000 00000000 = 0mA
......
11111111 = 2000mA
Table 13: Minimum Flash LED Current Register
Addr: 0x0B
Bit
Bit Name
Access
Default
Description
The minimum flash current caused by low battery
voltage current reduction in flash mode. 0 to 2000mA,
7.84mA/step.
00000000 = 0mA
……
7:0
IFL_MIN
R
00000000
11111111 = 2000mA
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
22
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
Table 14: LED1 Torch Current/Indicator Amplitude Setting Register
Addr: 0x0C
Bit
Bit Name
Access
Default
Description
In torch mode: LED1 current setting bits. 0 to
319mA, 1.25mA/step (default 00010101 = 26mA).
00000000 = 0mA
......
11111111 = 319mA
7:0
I1_TOR
RW
00010101
In indicator mode: LED1 current amplitude.
7.84mA/step (default 00010101 = 165mA).
00000000 = 0mA
00000001 = 7.84mA......
Table 15: LED2 Torch Current/Indicator Amplitude Setting Register
Addr: 0x0D
Bit
Bit Name
Access
Default
Description
In torch mode: LED2 current setting bits. 0 to
319mA, 1.25mA/step (default 00010101 = 26mA).
00000000 = 0mA
......
11111111 = 319mA
7:0
I2_TOR
RW
00010101
In indicator mode: LED2 current amplitude.
7.84mA/step (default 00010101 = 165mA).
00000000 = 0mA
00000001 = 7.84mA......
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
23
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
Table 16: Fault and Flag Indication Register
Addr: 0x0E
Bit
Bit Name
Access
Default Description
Low battery voltage fault bit.
7
FT_VBATL
R
0
0
0
0
0
0
0
0
0 = no fault
1 = fault
Output over-voltage fault bit.
0 = no fault
1 = fault
VOUT-GND short fault bit.
0 = no fault
1 = fault
LED short fault bit.
0 = no fault
1 = fault
Junction over-temperature fault bit.
0 = no fault
1 = fault
Flash time-out indicator bit.
0 = no fault
1 = fault
TX high indicator bit.
0 = no fault
1 = fault
Input DC current limit fault bit.
0 = no fault
6
5
4
3
2
1
0
FT_OVP
FT_VOSC
FT_LEDSC
FT_OTP
FT_TO
R
R
R
R
R
R
R
FT_TX
FT_IDC
1 = fault
Table 17: Fault Indication and Blink Time Setting Register
Addr: 0x0F
Bit
Bit Name
Access
Default Description
Blinking time setting bits in indicator mode.
00: no blinking, LED remains on
01: Tblink = 128ms
7:6
TBK
R/W
01
10: Tblink = 256ms
11: Tblink = 512ms
5:4
3
NA
R
R
R
NA
0
Reserved.
1: VLED1 ≥ VLED2 + 130mV
0: VLED1 < VLED2 + 130mV
1: VLED2 ≥ VLED1 + 130mV
0: VLED2 < VLED1 + 130mV
NTC fault bit.
BAL_1AB2
BAL_2AB1
2
0
1
0
FT_LEDHOT
FT_LEDOP
R
R
0
0
0 = no fault
1 = fault
LED open fault bit.
0 = no fault
1 = fault
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
24
MP3336 – DUAL-CHANNEL, FLASH, LED DRIVER WITH I2C INTERFACE
Selecting the Output Capacitor
APPLICATION INFORMATION
The output capacitor keeps the output voltage
ripple small and ensures feedback loop stability.
The output capacitor impedance must be low at
the switching frequency. Ceramic capacitors with
X7R dielectrics are recommended for their low
ESR characteristics. Ensure that the ceramic
capacitance is dependent on the voltage rating.
The DC bias voltage and the value can lose as
much as 50% of their capacitance at the rated
voltage rating. Ensure that enough of a voltage
rating margin is left when selecting the
component. A capacitance that is too low can
cause loop instability. For most applications, a
10μF ceramic capacitor is sufficient.
Selecting the Input Capacitor
The input capacitor reduces the surge current
drawn from the input supply and the switching
noise from the device. The input capacitor
impedance at the switching frequency should be
less than the input source impedance to prevent
the high-frequency switching current from
passing through to the input. Ceramic capacitors
with X5R or X7R dielectrics are recommended
for their low ESR and small temperature
coefficients. A capacitor with a higher value can
help reduce input voltage ripple and noise. For
most applications, a 10μF ceramic capacitor is
sufficient.
PCB Layout Guidelines
Selecting the Inductor
Efficient PBC layout is critical for stable operation.
For best results, follow the guidelines below.
The converter requires an inductor to supply a
higher output voltage while being driven by the
input voltage. An inductor with a larger value
results in less ripple current, a lower peak
inductor current, and reduced stress on the
internal N-channel MOSFET, but also has a
larger physical size, higher series resistance, and
lower saturation current.
1. Place a ceramic capacitor close to VIN.
2. Use a wider copper wire for input, output, and
GND to improve thermal performance.
3. Put as many vias close to GND at the output
and input capacitors as possible to improve
thermal performance.
Choose an inductor that does not saturate under
the worst-case load conditions. Select the
minimum inductor value to ensure that the boost
converter works in continuous conduction mode
with high efficiency and good EMI performance.
Calculate the required inductance value using
Equation (2) and Equation (3):
η VOUT D(1 D)2
L
(2)
(3)
2 fSW ILOAD
V
IN
D 1
VOUT
Where VIN and VOUT are the input and output
voltages, fSW is the switching frequency, ILOAD is
the LED load current, and η is the efficiency.
The switching current is used for peak-current
mode control. To avoid hitting the current limit,
the worst-case inductor peak current should be
less than 80% of the current-limit ILIM. For most
applications, 0.47µH~2µH inductor is sufficient.
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
25
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
TYPICAL APPLICATION CIRCUIT
Figure 17: Dual-Channel Application Circuit
MP3336 Rev.1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
26
MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I2C INTERFACE
PACKAGE INFORMATION
WLCSP20 (1.6mmx2.0mm)
PIN 1 ID
PIN 1 ID
MARKING
PIN 1 ID
INDEX AREA
TOP VIEW
BOTTOM VIEW
SIDE VIEW
NOTE:
1) ALL DIMENSIONS ARE IN MILLIMETERS.
2) BALL COPLANARITY SHALL BE 0.05
MILLIMETER MAX.
3) JEDEC REFERENCE IS MO-211.
5) DRAWING IS NOT TO SCALE.
RECOMMENDED LAND PATTERN
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
MP3336 Rev. 1.01
5/16/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
27
相关型号：
©2020 ICPDF网 联系我们和版权申明