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发布者:微桥 发布时间:2012/11/5 阅读:4309次    关键字: 锂电充电
FP7209-PWM Boost Controller for LED Driver


FP7209-Non-Synchronous PWM Boost Controller for LED Driver DataSheet

General Description
  The FP7209 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 programmable soft start time and switching frequency set by external capacitor and resistor. There are four functions to protect system circuit, such as UVP, OVP, SCP 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 FP7209 is available in the small footprint SOP-8L(EP) and TSSOP-14L(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.) / TSSOP-14L(EP)
 Programmable Switching Frequency: 100KHz~1000KHz
 Programmable Soft Start Function (SS)
 Input Under Voltage Protection (UVP)
 Output Over Voltage Protection (OVP)
 LED Short Circuit Protection (SCP)
 Switching MOSFET Over Current Protection (OCP)
 Over Temperature Protection (OTP)
 Package: SOP-8L(EP), TSSOP-14L(EP)

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

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