SL8830 啟動電壓2.5V LED面板燈升壓恒流芯片LED車燈照明

小鄭

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