SGM66055B [SGMICRO]
2.2MHz, Fixed Output Synchronous Tiny Boost Converter with a 2.4A Switch;
| 型号： | SGM66055B |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | 2.2MHz, Fixed Output Synchronous Tiny Boost Converter with a 2.4A Switch |
| 文件： | 总12页 (文件大小：1213K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM66055B
2.2MHz, Fixed Output Synchronous
Tiny Boost Converter with a 2.4A Switch
GENERAL DESCRIPTION
FEATURES
2.5V to 4.85V Operating Input Voltage Range
5.0V Fixed Output Voltage
The SGM66055B is an internally compensated, 2.2MHz
switching frequency, current mode, synchronous Boost
switching converter. The SGM66055B supports up to
800mA load current from a battery as low as 2.65V,
and the output voltage is fixed at 5.0V. This device turns
into power-save mode to maintain high efficiency at light
load currents. Its output is disconnected by the rectifier
circuit during shutdown with no input to output leakage.
IOUT ≥ 1A at VOUT = 5V, VIN ≥ 2.7V
Up to 97% Efficiency
Device Quiescent Current: 24µA (TYP)
Shutdown Current: 1µA (MAX)
Improved Light Load Efficiency with Power-Save
Mode (PSM)
Low Reverse Leakage Current when VOUT > VIN
Load Disconnect during Shutdown
Thermal Shutdown
The SGM66055B has built-in protection features such
as short-circuit protection, over-current protection and
thermal shutdown.
-40℃ to +85℃ Operating Temperature Range
Available in a Green WLCSP-1.21×1.21-9B Package
The SGM66055B is available in a Green WLCSP-
1.21×1.21-9B package.
APPLICATIONS
USB OTG
Single-Cell Li-Ion Battery Power Supply
Smart Phones and Tablets
Portable and Wearable Devices
TYPICAL APPLICATION
L
1μH
VIN
2.5V to 4.85V
CIN
10μF
SW
VOUT
5.0V
VIN
VOUT
SGM66055B
EN
ON
COUT
2 × 10μF
OFF
AGND
PGND
Figure 1. Typical Application Circuit
SG Micro Corp
MAY 2022 – REV. A. 1
www.sg-micro.com
2.2MHz, Fixed Output Synchronous
SGM66055B
Tiny Boost Converter with a 2.4A Switch
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
R9F
XXXX
SGM66055B-5.0 WLCSP-1.21×1.21-9B
SGM66055B-5.0YG/TR
Tape and Reel, 3000
-40℃ to +85℃
MARKING INFORMATION
NOTE: XXXX = Date Code.
Serial Number
Y Y Y
XX XX
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.
OVERSTRESS CAUTION
ABSOLUTE MAXIMUM RATINGS
VIN Voltage....................................................... -0.3V to 5.5V
VOUT and EN Voltages....................................... -0.3V to 6V
SW Node (DC)..................................................... -0.3V to 6V
SW Node (Transient: 10ns, 3MHz)......................... -1V to 8V
Voltage on Other Pins..........................................-0.3V to 6V
Package Thermal Resistance
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.
WLCSP-1.21×1.21-9B, θJA. .....................................106℃/W
Junction Temperature.................................................+150℃
Storage Temperature Range.......................-65℃ to +150℃
Lead Temperature (Soldering, 10s)............................+260℃
ESD Susceptibility
ESD SENSITIVITY CAUTION
This integrated circuit can be damaged by ESD if you don’t
pay attention to ESD protection. 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 very small parametric changes could cause the
device not to meet its published specifications.
HBM.............................................................................4000V
CDM ............................................................................1000V
RECOMMENDED OPERATING CONDITIONS
Operating Junction Temperature Range......-40℃ to +125℃
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
SG Micro Corp
www.sg-micro.com
MAY 2022
2
2.2MHz, Fixed Output Synchronous
SGM66055B
Tiny Boost Converter with a 2.4A Switch
PIN CONFIGURATION
(TOP VIEW)
1
2
3
VOUT
VOUT
VIN
A
B
C
SW
SW
EN
PGND
PGND
AGND
WLCSP-1.21×1.21-9B
PIN DESCRIPTION
PIN
NAME
FUNCTION
A1, A2
VOUT
Boost Converter Output.
Power Supply Input.
A3
B1, B2
B3
VIN
SW
Switch Node. Drain connection of low-side power MOSFET.
Device Enable Node. Pulling this pin logic high enables the device and pulling it logic
low disables the device.
EN
C1, C2
C3
PGND
AGND
Power Ground.
Analog Ground.
SG Micro Corp
www.sg-micro.com
MAY 2022
3
2.2MHz, Fixed Output Synchronous
SGM66055B
Tiny Boost Converter with a 2.4A Switch
ELECTRICAL CHARACTERISTICS
(VIN = 3.6V, TJ = -40℃ to +85℃, typical values are at TJ = +25℃, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DC/DC Stage
Input Voltage
VIN
VOUT
VUVLO_R
VUVLO_F
VUVLO_HYS
fSW
2.5
4.85
5.19
2.50
2.40
V
V
TJ = +25℃
Output Voltage
4.89
1.87
1.77
5.04
2.2
2.1
100
2.2
2.4
60
UVLO Rising Threshold
UVLO Falling Threshold
UVLO Hysteresis Voltage
Switching Frequency
Switch Current Limit
Boost Switch On-Resistance
Rectifying Switch On-Resistance
Quiescent Current
V
TJ = +25℃
TJ = +25℃
V
mV
MHz
A
1.71
1.80
2.54
2.85
95
IL
TJ = +25℃
RDSON
RDSON
IQ
mΩ
mΩ
µA
µA
VOUT = 5.0V, TJ = +25℃
80
105
35
VOUT = 5.0V, TJ = +25℃
24
VEN = VIN = 3.6V, no switching, TJ = +25℃
VEN = 0V, VIN = 3.6V, TJ = +25℃
Shutdown Current
ISD
0.01
1
Control Stage
EN Input Low Voltage
EN Input High Voltage
EN Input Current
VIL
VIH
0.4
V
V
1.3
IEN
Clamped to AGND or VIN
0.1
150
20
µA
℃
℃
Thermal Shutdown
TSD
Thermal Shutdown Hysteresis
TSD_HYS
SG Micro Corp
www.sg-micro.com
MAY 2022
4
2.2MHz, Fixed Output Synchronous
SGM66055B
Tiny Boost Converter with a 2.4A Switch
TYPICAL PERFORMANCE CHARACTERISTICS
At TJ = +25℃, VIN = 3.6V, CIN = 10μF and COUT = 20μF, unless otherwise noted.
Efficiency vs. Load Current
Supply Current vs. Input Voltage
TJ = -40℃
100
95
90
85
80
75
70
80
75
70
65
60
55
50
45
40
35
30
25
20
15
TJ = +25℃
TJ = +85℃
VIN = 2.6V
V
V
V
V
IN = 3V
IN = 3.6V
IN = 4.2V
IN = 4.85V
VOUT = 5V
2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9
0.1
1
10
100
1000
Input Voltage (V)
Load Current (mA)
Power-Save Mode Operation
PWM Operation
AC Coupled
AC Coupled
VOUT
VOUT
SW
SW
IL
IL
VIN = 3.6V, VOUT = 5V, IOUT = 200mA, COUT = 22μF
VIN = 3.6V, VOUT = 5V, IOUT = 40mA, COUT = 22μF
Time (3μs/div)
Time (120ns/div)
Start-up by VIN
Start-up by VIN
VIN
VIN
IL
IL
VOUT
VOUT
VIN = VEN, VOUT = 5V, IOUT = 0mA, COUT = 10μF
VIN = VEN, VOUT = 5V, IOUT = 0mA, COUT = 22μF
Time (100μs/div)
Time (100μs/div)
SG Micro Corp
MAY 2022
www.sg-micro.com
5
2.2MHz, Fixed Output Synchronous
SGM66055B
Tiny Boost Converter with a 2.4A Switch
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
At TJ = +25℃, VIN = 3.6V, CIN = 10μF and COUT = 20μF, unless otherwise noted.
Load Transient Response
Load Transient Response
IOUT
IOUT
IL
IL
AC Coupled
AC Coupled
VOUT
VOUT
VIN = 3.6V, VOUT = 5V, IOUT = 0mA to 400mA, COUT = 10μF
VIN = 3.6V, VOUT = 5V, IOUT = 0mA to 400mA, COUT = 22μF
Time (100μs/div)
Time (100μs/div)
Load Transient Response in PFM/PWM Operation
Load Transient Response in PFM/PWM Operation
IOUT
IOUT
AC Coupled
AC Coupled
VOUT
VOUT
IL
IL
VIN = 3.6V, VOUT = 5V, IOUT = 50mA to 500mA, COUT = 10μF
VIN = 3.6V, VOUT = 5V, IOUT = 50mA to 500mA, COUT = 22μF
Time (20μs/div)
Time (20μs/div)
Combined Line/Load Transient Response
AC Coupled
VOUT
IL
IOUT
VIN
VIN = 3.3V to 3.9V, VOUT = 5V, IOUT = 50mA to 500mA,
COUT = 10μF
Time (100μs/div)
SG Micro Corp
MAY 2022
www.sg-micro.com
6
2.2MHz, Fixed Output Synchronous
SGM66055B
Tiny Boost Converter with a 2.4A Switch
FUNCTIONAL BLOCK DIAGRAM
L
SW
VCC
VIN
2.5V to 4.85V
A3
+
_
VIN
+
CIN
Well
Switch
2.2V
VOUT
VOUT
5.0V
A1
A2
PWM
Control
Drive
Control
COUT
R1
Current
Sense
Σ
Slope
Comparator
Ramp Gen
2.2MHz
PWM
Comparator
+
_
_
gm
_
Error or
0.5V
REF
AMP
RC
+
CP2
1.5pF
200kΩ
CC
Power-Save
Mode Operation
Control
60pF
R2
Power Saving
B3
0.1μA
Shutdown
Control
EN
Shutdown
PGND
AGND
Figure 2. SGM66055B Block Diagram
SG Micro Corp
www.sg-micro.com
MAY 2022
7
2.2MHz, Fixed Output Synchronous
SGM66055B
Tiny Boost Converter with a 2.4A Switch
APPLICATION INFORMATION
The SGM66055B is a fully-integrated synchronous
Boost DC/DC converter. The recommended input
supply voltage for full performance is 2.5V to 4.85V.
Operating input voltage above 4.85V is possible with
SGM66055B, however, the full performance is not
guaranteed beyond the 4.85V operation. When the
input supply voltage is larger than 5.3V, the device is
shut down. An inductor, an output storage capacitor
and an input decoupling capacitor should be selected
to ensure the proper performance desired in a specific
application circuit.
When an output short to ground event occurs, the
SGM66055B reduces the current limit to 200mA (TYP)
to prevent damage to the device. The SGM66055B
resumes operation and goes through the start-up
sequence once the short-circuit condition is removed.
Inductor Selection
Inductor is an essential element for current DC/DC
switch mode power supplies regardless of topology.
Inductor serves as the energy storage element for
power conversion. Inductance and saturation current of
inductor are two most important criterions for inductor
selection. For general design guidance, the selected
inductance should provide a peak to peak ripple current
that is around 30% of the average inductor current at
full load and nominal input voltage. The average
inductor current for a Boost converter is the input
current. Equation 1 shows the calculation of inductance
selection, where fSW is the switching frequency and ΔIL
is the inductor ripple current.
Start-up and Enable
The SGM66055B implements the enable input to
control the turn-on and turn-off of the device. A logic
signal above 1.3V applied on EN pin turns on the
device, and a logic signal below 0.4V turns off the
device.
The SGM66055B has built-in 600μs (TYP) soft-start
time. After enabling, the SGM66055B enters linear
pre-charge phase with a limited current of 200mA. As
the output voltage reaches the input voltage, the
pre-charge phase terminates. The SGM66055B starts
switching and boosts the output voltage to the 5.0V
fixed output. This start-up sequence effectively reduces
the inrush current during start-up.
V ×(VOUT − V )
∆IL × fSW × VOUT
IN
IN
L =
(1)
The selected inductor should have a saturation current
rating higher than the 2.4A (TYP) current limit of
SGM66055B.
The inductor also affects the close loop response of the
DC/DC converter. The SGM66055B is an internally
compensated device; the loop response is optimized
for inductor in the range of 0.7µH to 2.9µH.
The SGM66055B has a built-in 0.1µA (TYP) pull-down
current when the EN pin is programmed to logic low. In
addition to this pull-down current, there is an additional
300kΩ pull-down resistor when EN pin is logic low.
When EN pin is programmed to logic high, the 300kΩ
pull-down resistor is switched off and only the 0.1µA
(TYP) pull-down current remains.
Input Capacitor
Boost converter’s input capacitor has continuous
current throughout the entire switching cycle, a 10µF
ceramic capacitor is recommended to place as close as
possible between the VCC pin and GND pin of the
device. For applications where the SGM66055B is
located far away from the input source, a 47µF or
higher capacitance capacitor is recommended to damp
the wiring harness inductance.
Current Limit and Short-Circuit
The SGM66055B has a built-in 2.4A (TYP) current limit.
As load current continues to rise and exceeds the
current limit, output voltage will fall to maintain a
constant power operation. As output voltage drops
below the input voltage, current limit is reduced to
200mA (TYP) to minimize excessive power dissipation
within the IC.
SG Micro Corp
www.sg-micro.com
MAY 2022
8
2.2MHz, Fixed Output Synchronous
SGM66055B
Tiny Boost Converter with a 2.4A Switch
APPLICATION INFORMATION (continued)
Output Capacitor
Layout Considerations
The output capacitors of Boost converter dictate the
output voltage ripple and load transient response.
Equation 2 is used to estimate the necessary
capacitance to achieve desired output voltage ripple,
where ΔV is the maximum allowed ripple.
In addition to component selection, layout is a critical
step to ensure the performance of any switch mode
power supplies. Poor layout could result in system
instability, EMI failure, and device damage. Thus, place
the inductor, input and output capacitors as close to the
IC as possible, and use wide and short traces for
current carrying traces to minimize PCB inductance.
IOUT ×(VOUT − V )
IN
CMIN
=
(2)
fSW × ΔV × VOUT
For Boost converter, the current loop of the output
capacitor from VOUT pin back to the PGND pin of the
device should be as small as possible.
Since SGM66055B is an internally compensated
device, the loop response is optimized for capacitor in
the range of 10µF to 47µF. Due to the DC bias nature of
ceramic capacitors, care should be taken by verifying
manufacture’s datasheet to ensure enough effective
capacitance at desired output voltage.
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
MAY 2022 ‒ REV.A to REV.A.1
Page
Updated Features section....................................................................................................................................................................................1
Changes from Original (APRIL 2022) to REV.A
Page
Changed from product preview to production data.............................................................................................................................................All
SG Micro Corp
www.sg-micro.com
MAY 2022
9
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
WLCSP-1.21×1.21-9B
A1 CORNER
0.23
Φ
9 ×
0.21
0.4
0.4
RECOMMENDED LAND PATTERN
TOP VIEW
1.210± 0.025
9 × Φ0.270± 0.020
3
2
1
A
B
C
0.4
0.040± 0.005
0.195± 0.020
0.365± 0.013
0.600± 0.038
0.4
BOTTOM VIEW
SIDE VIEW
NOTES:
1. All linear dimensions are in millimeters.
2. This drawing is subject to change without notice.
SG Micro Corp
TX00139.000
www.sg-micro.com
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
WLCSP-1.21×1.21-9B
7″
9.2
1.33
1.33
0.74
4.0
4.0
2.0
8.0
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
7″ (Option)
7″
368
442
227
410
224
224
8
18
SG Micro Corp
www.sg-micro.com
TX20000.000
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