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SGM3752

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38V High Efficiency, Boost White LED Driver with PWM Dimming Control

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The SGM3752 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 1.2MHz 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 200mV (TYP). The SGM3752 is essentially a driver that adopts analog dimming control, and it will not produce audible noise on the output capacitor. The SGM3752 integrates ringing cancellation, and it can effectively reduce EMI noise in DCM mode. The SGM3752 provides excellent line regulation and load regulation, as well as excellent load transient response. The SGM3752 also features various protection functions such as open LED protection, OCP protection and thermal shutdown protection.

 

The SGM3752 is available in a Green TSOT-23-6 package. It operates over an ambient temperature range of -40 to +85.

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FEATURES
  • Input Voltage Range: 2.7V to 5.5V

  • 1:250 Stable Luminance Dimming

  • Low EMI by Conducting Ringing Cancelling

  • Improved PSRR for Waveless Lighting

  • Up to 90% Efficiency

  • Switching Frequency: 1.2MHz

  • Integrated 40V/1.5A Switch

  • Feedback Voltage: 200mV

  • PWM Dimming Control

  • 38V LED Open 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

APPLICATIONS

Portable Devices Backlight

Small and Medium Size White LCD Display Backlight

Ordering Information
Part Number
StatusPackagePinsPd-Free
RoHS
REACH
Green
MSL RatingOperating Temperature RangeMaterial ContentReliability Report
Unit Resale Price*
(Volume Range: in USD)
Lead Time**
(Volume Range: Days)
SGM3752YTN6G/TR
Active
TSOT-23-6
6
Yes
YesYesYesMSL3
-40℃ to +85℃
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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.

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SG Micro Corp (SGMICRO) specializes in the development, manufacturing and sales of high-performance and high-reliability integrated circuits for analog signal conditioning and system power management, offering innovative solutions to a broad range of applications in the industrial, automotive, communication, computing, consumer electronics, and medical equipment markets.
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