SGM3131(EOL) [SGMICRO]
120mA 4-Channel Charge Pump White LED Driver with Low Dropout Current Source;
| 型号： | SGM3131(EOL) |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | 120mA 4-Channel Charge Pump White LED Driver with Low Dropout Current Source |
| 文件： | 总11页 (文件大小：633K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM3131
120mA 4-Channel Charge Pump White LED
Driver with Low Dropout Current Source
GENERAL DESCRIPTION
FEATURES
The SGM3131 is a current-regulated white LED driver
with integrated low dropout current sources and a high
efficiency charge pump. The charge pump has
automatically selectable 1×/1.5× fractional operation
modes. The SGM3131 is well suited for white LED
applications powered by a Li-Ion battery due to small
equivalent open-loop resistance in 1× mode.
● Input Voltage Range: 2.7V to 5.5V
● Support up to 4 LEDs at 30mA Each
● 16-Step LED Brightness Control Through One-Wire
Interface
● 1× and 1.5× Charge Pump for High Conversion
Efficiency
● Switching Frequency: 1MHz
● 1% Regulated LED Current Matching
● Built-in Soft-Start for Reducing Inrush Current
● Low Input Ripple and Low EMI
● Protection Features
The supply voltage operates from 2.7V to 5.5V. The
SGM3131 supports up to 4 LEDs for total maximum
120mA current. The ISET reference current is set
through an external resistor on the ISET pin. The
SGM3131 contains a 4-bit digital-to-analog converter
for 16-step LED current control. The LED current can
be set between 0.5mA and 30mA by a serial pulse
input signal into the EN pin.
Over-Current Protection
Under-Voltage Lockout
Thermal Shutdown
● Operating Temperature Range: -40℃ to +85℃
● Available in a Green TQFN-3×3-16L Package
The SGM3131 provide less than 1μA shutdown current
and soft-start function. Built-in soft-start circuitry avoids
excessive inrush current during startup and mode
transition. The load is isolated from the input supply
once shutdown occurs.
APPLICATIONS
White LED Backlighting
Mobile Phones, MP3s
Digital Still Cameras
LCD Displays
SGM3131 is available in a Green TQFN-3×3-16L
package. It operates over an ambient temperature
range of -40℃ to +85℃.
SG Micro Corp
JANUARY2013–REV.A. 2
www.sg-micro.com
120mA 4-Channel Charge Pump White LED
Driver with Low Dropout Current Source
SGM3131
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
3131TQ
XXXXX
SGM3131
TQFN-3×3-16L
SGM3131YTQ16G/TR
Tape and Reel, 3000
-40℃ to +85℃
MARKING INFORMATION
NOTE: XXXXX = Date Code and Vendor Code.
X X X X X
Vendor Code
Date Code - Week
Date Code - Year
Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If
you have additional comments or questions, please contact your SGMICRO representative directly.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage Range......................................... -0.3V to 6V
The Other Pins to GND........................................-0.3V to VIN
Power Dissipation, PD @ TA = +25℃
ESD SENSITIVITY CAUTION
This integrated circuit can be damaged if ESD protections are
not considered carefully. SGMICRO recommends that all
integrated circuits be handled with appropriate precautions.
Failureto observe proper handlingand installation procedures
can cause damage. ESD damage can range from subtle
performance degradation tocomplete device failure. Precision
integrated circuits may be more susceptible to damage
because even small parametric changes could cause the
device not to meet the published specifications.
TQFN-3×3-16L.............................................................1.47W
Operating Temperature Range.......................-40℃ to +85℃
Junction Temperature.................................................+160℃
Storage Temperature Range........................-65℃ to +150℃
Lead Temperature (Soldering, 10s)............................+260℃
ESD Susceptibility
HBM.............................................................................2000V
MM.................................................................................200V
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
OVERSTRESS CAUTION
Stresses beyond those listed in Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to
absolute maximum rating conditions for extended periods
may affect reliability. Functional operation of the device at any
conditions beyond those indicated in the Recommended
Operating Conditions section is not implied.
SG Micro Corp
www.sg-micro.com
JANUARY 2013
2
120mA 4-Channel Charge Pump White LED
Driver with Low Dropout Current Source
SGM3131
PIN CONFIGURATION
(TOP VIEW)
NC
16
EN AGND VIN
14
15 13
ISET
NC
1
2
3
4
12 C2N
11 C1N
GND
LED4
10
9
C1P
C2P
LED3
5
6
7
8
LED2 LED1 PGND VOUT
TQFN-3×3-16L
PIN DESCRIPTION
PIN
1
NAME
ISET
I/O
FUNCTION
Current Setting Pin. Connect an external resistor from this pin to ground to set the
maximum LED current.
I
-
2, 16
3 - 6
7
NC
No Connection.
LED4 - LED1
PGND
VOUT
C2P
I
Current Sink Input. Connect to the cathode of the corresponding LED.
Power Ground Pin.
-
8
O
-
Connect to the output capacitor and the anodes of the LEDs.
Positive Terminal of the Flying Capacitor 2.
Positive Terminal of the Flying Capacitor 1.
Negative Terminal of the Flying Capacitor 1.
Negative Terminal of the Flying Capacitor 2.
Input Supply Pin.
9
10
11
12
13
14
15
C1P
-
C1N
-
C2N
-
VIN
I
AGND
EN
-
Analog Ground Pin.
I
Active-High Enable Pin. Connect to the GPIO pin of MCU.
Exposed Pad. It should be soldered to PCB board and connected to GND.
Exposed
Pad
GND
-
SG Micro Corp
www.sg-micro.com
JANUARY 2013
3
120mA 4-Channel Charge Pump White LED
Driver with Low Dropout Current Source
SGM3131
ELECTRICAL CHARACTERISTICS
(VIN = 3.6V, EN = VIN, TA = +25℃, unless otherwise noted.)
PARAMETER
Supply Voltage and Current
Input Voltage Range
SYMBOL
CONDITIONS
MIN
TYP MAX UNITS
VIN
IQ
2.7
5.5
V
VIN = 4.2V, 1× Mode, EN = 1, ISET = 0μA
VIN = 4.2V, 1× Mode, EN = 1, ISET = 20μA
IOUT = 0mA, 1.5× Mode
100
200
2
μA
μA
mA
μA
Quiescent Power Supply Current
IQ
Shutdown Supply Current
Charge Pump Stage
Over-Voltage Limit
Start-Up Time
ISHDN
EN = GND
1
VOUT
LEDx unconnected, VIN = 4.2V
5.7
235
220
1
V
μs
COUT = 1μF, ILEDx ≥ 0.9 ×ILEDx-SET
Soft-Start Duration
Switching Frequency
Efficiency
μs
f
0.6
1.4
MHz
%
η
VIN = 3.25V, ILEDx = 15mA each, VLEDx =2.95V
Temperature rising
88
Thermal Shutdown Temperature
Hysteresis Temperature
Input Current Limit
Current Sinks
150
15
℃
℃
EN = 1, ISET = 100μA
270
mA
Recommended Maximum Current per
Current Sink
Current into Each Current Sink
when ISET is Shorted to GND
Current Matching between Any
Two Outputs
ILEDx
ILEDx
3.2V ≤ VIN ≤ 5.5V
30
40
1
mA
mA
%
3.0V ≤ VIN ≤ 5.5V, ISET shorted to GND
VLEDx = 3.1V, TA=25℃
-3
+3
Line Regulation
3V < VIN < 5.5V, VLEDx =3.1V, EN = 1, ISET = 80μA
2
%
mV
μA
Reference Voltage for Current Set
Recommended ISET Pin Current Range
ILEDx to ISET Current Ratio
Voltage at LEDx to GND
Enable
VISET
ISET
EN = 1
580
2
600
620
130
280
K
EN = 1, ISET = 80μA
230
260
400
VSOURCE
EN = 1, ILEDx = 30mA
mV
EN Low Time for Shutdown
EN Low Time for Dimming
EN High Time for Dimming
tSHDN
tLO
3
ms
μs
μs
V
0.5
0.5
1.2
500
0.6
tHI
Logic-High Voltage
EN Threshold
VIH
VIL
Logic-Low Voltage
V
SG Micro Corp
www.sg-micro.com
JANUARY 2013
4
120mA 4-Channel Charge Pump White LED
Driver with Low Dropout Current Source
SGM3131
TYPICAL PERFORMANCE CHARACTERISTICS
SG Micro Corp
www.sg-micro.com
JANUARY 2013
5
120mA 4-Channel Charge Pump White LED
Driver with Low Dropout Current Source
SGM3131
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Efficiency vs. Input Voltage
LED Current Regulation vs. Input Voltage
100
90
80
70
60
50
40
26
25
24
23
22
21
20
19
18
17
16
15
14
ILEDX = 15mA VF = 2.95V
ILEDX = 25mA VF = 3.05V
2.7
3.2
3.7
4.2
4.7
5.2 5.5
3.2
3.7
4.2
4.7
5.2 5.5
Input Voltage (V)
Input Voltage (V)
SG Micro Corp
www.sg-micro.com
JANUARY 2013
6
120mA 4-Channel Charge Pump White LED
Driver with Low Dropout Current Source
SGM3131
TYPICAL APPLICATION CIRCUITS
CFLY
1μF
CFLY
1μF
12
11
10
9
C2N C1N C1P C2P
8
VOUT
13
15
VIN
Pulse Input
CIN
1μF
+
Li-ion
Battery
COUT
1μF
EN
SGM3131
6
5
4
LED1
LED2
LED3
LED4
1
ISET
3
14
AGND
PGND
7
RSET
Figure 2. For 4-WLEDs Application Circuit
CFLY
1μF
CFLY
1μF
12
11
10
9
C2N C1N C1P C2P
8
1
VOUT
ISET
Pulse Input
COUT
1μF
15
RSET
EN
6
5
SGM3131
LED1
LED2
LED3
LED4
13
14
4
3
VIN
+
Li-ion
CIN
1μF
AGND
Battery
PGND
7
Figure 3. For 3-WLEDs Application Circuit
SG Micro Corp
www.sg-micro.com
JANUARY 2013
7
120mA 4-Channel Charge Pump White LED
Driver with Low Dropout Current Source
SGM3131
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
JANUARY 2013 ‒ REV.A.1 to REV.A.2
Page
Added Recommended Land Pattern section......................................................................................................................................................11
Added Tape and Reel Information section.................................................................................................................................................... 12, 13
MAY 2011 ‒ REV.A to REV.A.1
Page
Changed Package Description ..........................................................................................................................................................................All
Changes from Original (APRIL 2010) to REV.A
Page
Changed from product preview to production data.............................................................................................................................................All
SG Micro Corp
www.sg-micro.com
JANUARY 2013
8
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
TQFN-3×3-16L
D
e
N16
N1
L
D1
E
E1
k
N5
b
BOTTOM VIEW
TOP VIEW
1.7
0.7
A
3.6 2.2 1.7
A1
A2
SIDE VIEW
0.5
0.24
RECOMMENDED LAND PATTERN (Unit: mm)
Dimensions
In Millimeters
Dimensions
In Inches
Symbol
MIN
MAX
0.800
0.050
MIN
MAX
0.031
0.002
A
A1
A2
D
0.700
0.000
0.028
0.000
0.203 REF
0.008 REF
2.900
1.600
2.900
1.600
3.100
1.800
3.100
1.800
0.114
0.063
0.114
0.063
0.122
0.071
0.122
0.071
D1
E
E1
k
0.200 MIN
0.500 TYP
0.008 MIN
0.020 TYP
b
0.180
0.300
0.300
0.500
0.007
0.012
0.012
0.020
e
L
SG Micro Corp
www.sg-micro.com
TX00081.000
PACKAGE INFORMATION
TAPE AND REEL INFORMATION
REEL DIMENSIONS
TAPE DIMENSIONS
P2
P0
W
Q2
Q4
Q2
Q4
Q2
Q4
Q1
Q3
Q1
Q3
Q1
Q3
B0
Reel Diameter
P1
A0
K0
Reel Width (W1)
DIRECTION OF FEED
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF TAPE AND REEL
Reel Width
Reel
Diameter
A0
B0
K0
P0
P1
P2
W
Pin1
Package Type
W1
(mm)
(mm) (mm) (mm) (mm) (mm) (mm) (mm) Quadrant
TQFN-3×3-16L
13″
12.4
3.35
3.35
1.13
4.0
8.0
2.0
12.0
Q1
SG Micro Corp
TX10000.000
www.sg-micro.com
PACKAGE INFORMATION
CARTON BOX DIMENSIONS
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF CARTON BOX
Length
(mm)
Width
(mm)
Height
(mm)
Reel Type
Pizza/Carton
13″
386
280
370
5
SG Micro Corp
www.sg-micro.com
TX20000.000
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