Datasheet > SGM37310

SGM37310

更新时间： 2024-03-03 10:11:20

品牌	Logo	应用领域
圣邦微 - SGMICRO		/
页数	文件大小	规格书
6页	331K
描述
35.5V High Efficiency, Boost White LED Driver with PWM Dimming Control

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SGM37310 数据手册

SGM37310

35.5V High Efficiency, Boost White

LED Driver with PWM Dimming Control

GENERAL DESCRIPTION

FEATURES

The SGM37310 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.

• 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

The default LED current can be programmed by the

external current-sense resistor R_SET. 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 V_REFis 200mV

(TYP). The SGM37310 is essentially a driver that

adopts analog dimming control, and it will not produce

audible noise on the output capacitor. The SGM37310

integrates ringing cancellation, and it can effectively

reduce EMI noise in DCM mode. The SGM37310

provides excellent line regulation and load regulation,

as well as excellent load transient response. The

SGM37310 also features various protection functions

such as open LED protection, OCP protection and

thermal shutdown protection.

• PWM Dimming Control

• 35.5V 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 TDFN-2×2-6L Package

APPLICATIONS

Portable Devices Backlight

Small and Medium Size White LCD Display Backlight

The SGM37310 is available in a Green TDFN-2×2-6L

package. It operates over an ambient temperature

range of -40℃ to +85℃.

SG Micro Corp

JUNE 2023 – REV. A

www.sg-micro.com

12 3 4 5 6

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