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SGM3760 Datasheet Preview

SGM3760 Datasheet

Dual-Channel WLED Driver

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SGM3760/SGM3760A
40V High Efficiency Step-Up,
Dual-Channel WLED Drivers with Flash Mode
GENERAL DESCRIPTION
The SGM3760 and SGM3760A are dual-channel
screen flash WLED drivers which provide highly
integrated solutions for single-cell Li-Ion battery
powered smart phone backlight.
The SGM3760/A have a built-in high efficiency boost
regulator with integrated 3.6A/40V power MOSFET and
support as low as 2.7V input voltage. With two high
current-matching capability current sink regulators, the
devices can drive up to 10S2P WLEDs.
The SGM3760/A are quite suitable for smart phone
image capture using display device as screen flash
light sources, as they can output up to 80mA/60mA
current per channel at 32V for 330ms when the strobe
signal is active.
The backlight mode default white LED current is set
with the external sensor resistor, as shown in the
typical application. During the operation, the LED
current can be controlled by a pulse width modulation
(PWM) signal applied to the PWM pin.
When the device is working, if the STRB pin is pulled
high, it will turn on flash mode within 50μs. And the
output current is regulated to 4× for SGM3760 and 3×
for SGM3760A of the backlight mode that is determined
by the PWM signal duty cycle. And it will turn to
backlight mode within 50μs when the STRB is pulled
low or the strobe signal keeps high over the 330ms
timer.
The SGM3760/A integrate built-in soft-start, over-
voltage, over-current protection, and thermal shutdown
protection.
The SGM3760/A are available in a Green WLCSP
-1.32×1.32-9B package and operate over the -40to
+85temperature range.
FEATURES
2.7V to 5.5V Input Voltage Range
Integrated 3.6A/40V MOSFET
1.15MHz Switching Frequency
Optimized Rise Time and Fall Time to Control
EMI for SW Pin
Dual Current Sinks
Up to 30mA Current Each in Backlight Mode
4× Output Current in Screen Flash Mode for
up to 330ms (SGM3760)
3× Output Current in Screen Flash Mode for
up to 330ms (SGM3760A)
1% Typical Current Matching and Accuracy
Adaptive Boost Output to WLED Voltages
Very Low Voltage Headroom Control (150mV)
PWM Dimming Control Interface
Up to 90% Efficiency
Built-In Soft-Start Function
41.5V Over-Voltage Protection
Built-In WLED Open/Short Protection
Dimming Stable in More than 1:500 PWM Range
PFM Mode at Light Load
Thermal Shutdown
-40to +85Operating Temperature Range
Available in Green WLCSP-1.32×1.32-9B Package
APPLICATIONS
Smart Phones
PDAs, Handheld Computers
GPS Receivers
Backlight for Small and Media Form Factor
LCD Display with Single-Cell Battery Input
SG Micro Corp
www.sg-micro.com
MARCH 2019 – REV. A




SG Micro

SGM3760 Datasheet Preview

SGM3760 Datasheet

Dual-Channel WLED Driver

No Preview Available !

SGM3760/SGM3760A
40V High Efficiency Step-Up,
Dual-Channel WLED Drivers with Flash Mode
PACKAGE/ORDERING INFORMATION
MODEL
SGM3760
PACKAGE
DESCRIPTION
SPECIFIED
TEMPERATURE
RANGE
WLCSP-1.32×1.32-9B -40to +85
ORDERING
NUMBER
SGM3760YG/TR
SGM3760A WLCSP-1.32×1.32-9B -40to +85SGM3760AYG/TR
PACKAGE
MARKING
XXXX
ME6
XXXX
C04
PACKING
OPTION
Tape and Reel, 3000
Tape and Reel, 3000
MARKING INFORMATION
NOTE: XXXX = Date Code.
XXXX
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
VIN.........................................................................0.3V to 6V
STRB, PWM to GND ........................................... -0.3V to 6V
COMP, ISET to GND ........................................... -0.3V to 3V
SW, IFB1, IFB2 to GND ..................................... -0.3V to 40V
Package Thermal Resistance
WLCSP-1.32×1.32-9B, θJA ...................................... 100/W
Junction Temperature.................................................+150
Storage Temperature Range ........................ -65to +150
Lead Temperature (Soldering, 10s) ............................+260
ESD Susceptibility
HBM ..................................................................................... 4000V
MM ......................................................................................... 300V
CDM ..................................................................................... 1000V
RECOMMENDED OPERATING CONDITIONS
Supply Voltage Range ........................................2.7V to 5.5V
Operating Temperature Range ....................... -40to +85
Operating Junction Temperature Range, TJ
...................................................................... -40to +125
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.
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.
Failure to observe proper handling and installation procedures
can cause damage. ESD damage can range from subtle
performance degradation to complete 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.
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
MARCH 2019
2



Part Number SGM3760
Description Dual-Channel WLED Driver
Maker SG Micro
Total Page 3 Pages
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SGM3760 Datasheet PDF





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