用于LED驅(qū)動器的非同步PWM升壓控制器

12V升壓恒流芯片

恒流控制芯片 

大電流升壓恒流IC

大功率升壓恒流電路

24V升壓恒流

General Description

The SL8830 is boost topology switching regulator for LED driver. It provides built-in gate driver

pin for driving external N-MOSFET. The non-inverting input of error amplifier connects to a 0.2V

reference voltage. It has programmable soft start time set by external capacitor, and over voltage

protection set by external resistor. The LED current can be adjusted by an external signal connecting

to the EN pin. EN pin accepts either a DC voltage or a PWM signal. The PWM signal filter components

are contained within the chip.

Features

 Start-up Voltage: 2.5V

 Wide Supply Voltage Operating Range: 4.5V to 24V

 Precision Feedback Reference Voltage: 0.2V (Max.)

 Analog and Digital Dimming Control

 Shutdown Current: 6μA (Max.)

 Internal Fixed Switching Frequency: 300KHz

 Programmable Soft Start Function (SS)

 Programmable Over Voltage Protection (OVP)

 Over Temperature Protection (OTP)

 Package: SOP-8L(EP)

Applications

 LED Module

 Display Backlight

 Car Lighting

 Portable LED Lighting

Typical Application Circuit

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