SGM3759
38V High Efficiency, Boost White LED Driver with Strobe Interface for Flash Mode
The SGM3759 is a high efficiency white LED driver with a 1.2MHz boost converter. With the fixed switching frequency and an internal 40V/3A switch FET, the SGM3759 is designed for powering single or parallel LED strings for various size panel backlighting and ideal for smart phone image capture using display device as a flash mode light source, as it is capable of driving up to 200mA current at 30V for 320ms when the strobe signal is active.
The FB feedback voltage is regulated at 200mV typically. The backlight mode default LED current is programmed by an external RSET resistor. During the operation, the LED current can be controlled by applying a PWM signal to the CTRL pin. The feedback voltage depends on the PWM signal duty cycle. For PWM dimming control, there are no audible noises on the output capacitor.
The SGM3759 integrates LED open protection. It prevents the device from damaging due to the over-voltage during LED open conditions.
When the device is in operation and the STROBE pin is pulled up, the SGM3759 will enter flash mode within 100μs. The feedback voltage is regulated to 5× of thebacklight mode voltage that is determined by the PWM signal duty cycle. When the STROBE pin is pulled down or the strobe signal remains high for longer than the 320ms timer, the SGM3759 will enter backlight mode within 100μs.
The SGM3759 is available in a Green TSOT-23-6 package. It operates over an ambient temperature range of -40℃ to +85℃.
Input Voltage Range: 2.7V to 5.5V
Integrated 40V/3A Switch
Up to 200mA Output Current at 30V
Accumulated 320ms Flash Timer Control
Switching Frequency: 1.2MHz
PWM Dimming Control
PWM Dimming Frequency: 20kHz to 100kHz
Strobe Interface for Image Capture Mode
Up to 87% Efficiency for 7S2P LEDs
Up to 92% Efficiency for 3S20P LEDs
Dimming Stable in 1:500 Range
Feedback Voltage
Backlight Mode: 200mV
Flash Mode: 1000mV
Flash Mode Under-Voltage Lockout
Automatic Soft-Start for Reducing Inrush Current
PFM Mode at Light Load
Protection Features
38V Over-Voltage Protection
LED Open or Short Protection
Thermal Shutdown
-40℃ to +85℃ Operating Temperature Range
Available in a Green TSOT-23-6 Package
PDAs, Handheld Computers
Backlight for Media Form Factor LCD Displays with 1-Cell Battery Input
Part Number | Status | Package | Pins | Pd-Free | RoHS | REACH | Green | MSL Rating | Operating Temperature Range | Material Content | Reliability Report | Unit Resale Price* (Volume Range: in USD) | Lead Time** (Volume Range: Days) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM3759YTN6G/TR | Active | TSOT-23-6 | 6 | Yes | Yes | Yes | Yes | MSL3 | -40℃ to +85℃ | View | View | 1-24 units : $0.7/unit 25-99 units : $0.6/unit 100-249 units : $0.5/unit 250-499 units : $0.4/unit 500-999 units : $0.35/unit 1000-9999 units : $0.26/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 91 days |
* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.
** The lead time provided is for reference purposes only and is subject to change based on different circumstances.
