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SG Micro

SGM3752 Datasheet Preview

SGM3752 Datasheet

Boost WLED Driver

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Preliminary Datasheet for Engineering Sample
SGM3752
38V High Efficiency, Boost WLED Driver
with PWM Control
GENERAL DESCRIPTION
With a 40V rated integrated switch FET, the SGM3752
is a boost converter that drives LEDs in series. The
boost converter has a 40V, 1.5A internal MOSFET; thus
it can drive single or parallel LED strings for small to
large size panel backlighting.
The default white LED current is set with the external
sensor resistor, RSET, and the feedback voltage is
regulated to 200mV, as shown in the typical application.
During the operation, the LED current can be controlled
by using a pulse width modulation (PWM) signal
applied to the CTRL pin, through which the duty cycle
determines the feedback reference voltage. The
SGM3752 does not burst the LED current; therefore, it
does not generate audible noises on the output
capacitor. For maximum protection, the device features
integrated open LED protection that disables the
SGM3752 to prevent the output voltage from exceeding
the IC absolute maximum voltage ratings during open
LED conditions.
The SGM3752 is available in Green TSOT-23-6
package. It operates over an ambient temperature
range of -40to +85.
FEATURES
1:250 Stable Luminance Dimming
Low EMI by Conducting Ringing Cancelling
Improved PSRR for Waveless Lighting
Input Voltage Range: 2.7V to 5.5V
Integrated 40V, 1.5A MOSFET
38V Open LED Protection for 10 LEDs in Series
1.5A Switch Current Limit
1.2MHz Switching Frequency
200mV Reference Voltage
PWM Brightness Control
Open LED Protection
Under-Voltage Protection
Up to 90% Efficiency
Built-in Soft-Start Function
Thermal Shutdown
-40to +85Operating Temperature Range
Available in Green TSOT-23-6 Package
APPLICATIONS
Smart Phone Backlighting
Tablet Backlighting
PDAs, Handheld Computers, GPS Receivers
Portable Media Players, Portable TVs
White LED Backlighting for Small and Media Form Factor
Displays
SG Micro Corp
www.sg-micro.com
November 5, 2015




SG Micro

SGM3752 Datasheet Preview

SGM3752 Datasheet

Boost WLED Driver

No Preview Available !

SGM3752
38V High Efficiency, Boost WLED Driver
with PWM Control
PACKAGE/ORDERING INFORMATION
MODEL
SGM3752
PACKAGE
DESCRIPTION
TSOT-23-6
SPECIFIED
TEMPERATURE
RANGE
-40to +85
ORDERING
NUMBER
SGM3752YTN6G/TR
PACKAGE
MARKING
G7CXX
PACKING
OPTION
Tape and Reel, 3000
NOTE: XX = Date Code.
MARKING INFORMATION
G7C X X
Date code - Month ("A" = Jan. "B" = Feb. "L" = Dec.)
Date code - Year ("A" = 2010, "B" = 2011 )
Chip I.D.
For example: G7CFA (2015, January)
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
Voltage on VIN, CTRL, FB................................... -0.3V to 6V
Package Thermal Resistance
TSOT-23-6, θJA ........................................................ 190/W
Voltage on SW................................................... -0.3V to 40V
Junction Temperature ...................................................150
Storage Temperature Range ........................-65to +150
Lead Temperature (Soldering, 10sec) ..........................260
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range ...........................................2.7V to 5.5V
Output Voltage Range ........................................... VIN to 38V
Inductor........................................................... 4.7μH to 10μH
Input Capacitor ...................................................... 1μF (MIN)
Output Capacitor.................................................1μF to 10μF
Operating Temperature Range .......................-40to +85
OVERSTRESS CAUTION
Stresses beyond those listed may cause permanent damage
to the device. Functional operation of the device at these or
any other conditions beyond those indicated in the
operational section of the specification is not implied.
Exposure to absolute maximum rating conditions for
extended periods may affect reliability.
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, specification or other related things if
necessary without notice at any time.
SG Micro Corp
www.sg-micro.com
2


Part Number SGM3752
Description Boost WLED Driver
Maker SG Micro
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