■ Overview

The AN8029 is an IC developed for controlling the self-excited switching power supply employing the RCC pseudo-resonance type control method.

It is compact, equipped only with the necessary minimum functions.

The maximum on-period and the minimum off-period can be set separately by using the external capacitor and resistor respectively.

It is suitable for the power supply of AV equipment.

■ Features

? Operating supply voltage range:

Stop voltage (8.6 V typical) to 34 V

? Output block employs the totem pole system.

? Power MOSFET can be directly driven. (output peak current: ±1 A maximum)

? Small pre-start operating current (95 μA typical) allows using a small size start resistor.

? Built-in pulse-by-pulse overcurrent protection function

? Incorporating the protection circuit against malfunction at low voltage (start/stop: 14.9 V/8.6 V)

? Built-in overvoltage protection function (externally resettable)

? Built-in timer latch function

? Equipped with frequency (VF) control function.

? 9-pin single inline package expands the freedom of board design

■ Applications

? Televisions, facsimiles, printers, scanners, video equipment