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发布者:来自网络 发布时间:2020/3/12 阅读:756次    关键字: LED
FP1209-PWM Boost Controller for LED Driver


FP1209-Non-Synchronous PWM Boost Controller for LED Driver  DataSheet

FP1209应用说明  Application Note

FP1209元件值计算

General Description
    The FP1209 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 0.25V reference voltage. It has fixed soft start time and switching frequency. There are two functions to protect system circuit like OVP and OCP. The LED current can be adjusted by an external signal connecting to the DIM pin. DIM pin accepts either a DC voltage or a PWM signal. The PWM signal filter components are contained within the chip. Current mode control and external compensation network make is easy and flexible to stabilize the system.
    The FP1209 is available in the small footprint SOP-8L(EP) packages to fit in space-saving PCB layout for application fields.

Features
 Start-up Voltage: 2.8V
 Wide Supply Voltage Operating Range: 5V to 24V
 Precision Feedback Reference Voltage: 0.25V (Max.)
 Analog and Digital Dimming Control
 Shutdown Current: 6μA (Max.)
 Internal Fixed PWM frequency: 150KHz
 Internal Soft Start Function
 Output Over Voltage Protection (OVP)
 Switching MOSFET Over Current Protection (OCP)
 Over Temperature Protection (OTP)
 Package: SOP-8L(EP)

Applications
 LED Module
 Display Backlight
 Car Lighting
 Portable LED Lighting

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