BL8080 Datasheet (BELLING) - HIGH INTEGRATED PWM CONTROLLER

BL8080, HIGH INTEGRATED PWM CONTROLLER

1 OB Output of the drive, connects this pin to the base of the external power transistor.

2 OE Connects this pin to the emmiter of the external power transistor.

3 VCC The power supply.

This pin provides power for the internal circuitry and driver.

4 FB Feedback.

Need put a capacitor between th

BL8080 GENERAL DISCRIPTION The BL8080 is a PWM controller designed to drive high voltage NPN transistors.

It integrates an oscillator, cycle-by-cycle current limit, thermal protection and over voltage protection, great reducing the number of external components and system level cost.

Compared to conventional controller, BL8080 has a significantly smaller startup current of less than 20uA, which allows large startup resistor that enabes further power saving.

The frequency can be adjusted from an

BL8080 Features

* Low start up current

* Easy programmable frequency

* Compact SOT23-6 package

* Universal voltage range: 85VAC -264VAC

* Thermal shutdown

* Cycle by cycle current limit

* Slope current drive

* Low standby power consumption APPLICATIONS

* Cell phone charger