描述 Description

■Overview
The AN8028 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.■

特性 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