The FP7208 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.
特点
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)