SGM3755
38V High Efficiency, Boost White LED Driver with PWM Dimming Control
38V High Efficiency, Boost White LED Driver with PWM Dimming Control
The SGM3755 is an asynchronous Boost WLED driver with high efficiency, low EMI and high output voltage. The Boost converter integrates a 40V, 1.5A internal FET which operates at 600kHz switching frequency. Its strong driving ability can drive single or multiple parallel LED strings, which can be used as LED driver for smart phone and tablet backlight.
The default LED current can be programmed by the external current-sense resistor RSET. By varying the duty cycle of the PWM signal applied to the CTRL pin, the internal reference voltage is adjusted, which ultimately adjusts the LED sink current. With full PWM duty cycle, the internal reference voltage VREF is 300mV (TYP). The SGM3755 is essentially a driver that adopts analog dimming control, and it will not produce audible noise on the output capacitor. The SGM3755 integrates ringing cancellation, and it can effectively reduce EMI noise in DCM mode. The SGM3755 provides excellent line regulation and load regulation, as well as excellent load transient response. The SGM3755 also features various protection functions such as open LED protection, OCP protection and thermal shutdown protection.
The SGM3755 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
1:350 Stable Luminance Dimming
Low EMI by Conducting Ringing Cancelling
Improved PSRR for Waveless Lighting
Up to 90% Efficiency
Switching Frequency: 600kHz
Integrated 40V/1.5A Switch
Feedback Voltage: 300mV
PWM Dimming Control
38V Open LED Protection for 10 LEDs in Series
Automatic Soft-Start for Reduced Inrush Current
Under-Voltage Lockout Protection
Thermal Shutdown
-40℃ to +85℃ Operating Temperature Range
Available in a Green TSOT-23-6 Package
Portable Devices Backlight
Small and Medium Size White LCD Display Backlight
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) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM3755YTN6G/TR | Not Recommended for New Designs | TSOT-23-6 | 6 | Yes | Yes | Yes | Yes | MSL3 | -40℃ to +85℃ | View | View |
* 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.
