AS2333 – (AS23xx) Secondary Side Housekeeping Circuit

AS2333 Datasheet PDF learn more.

Part number : AS2333

Functions : This is a kind of semiconductor. (AS23xx) Secondary Side Housekeeping Circuit.

Pin arrangement :

Package information :

Manufacturer : Astec

Image :

AS2333 Datasheet PDF

The texts in the PDF file :

SEMICONDUCTOR AS23xx Secondary Side Housekeeping Circuit

Description

The AS23xx is a housekeeping circuit for monitoring the outputs of power supplies. It directly senses all the output rails without the need for external dividers and detects undervoltage and overvoltage. It also provides an additional undervoltage comparator which may be configured with any arbitrary hysteresis to sense a divided down representation of the AC bulk voltage. The housekeeping section provides all the features necessary to allow external caps to set the common timing features of PC type power supplies. In addition, negative rails may be sensed without the necessity of a VEE connection, and negative sensing may be disabled without affecting operation of the positive sense section. The 2.5 V series reference is available and can source up to 5 mA. This IC is available in 16 lead packages. Outputs include a POK (Power OK) and a fault signal. The AS2333 includes sensing for ±12 V, 5 V, and 3.3 V. The AS2350 exchanges a –5 V sense capability for the 3.3 V input. The AS2316 monitors all supply voltages, but lacks CBD (Crow-Bar Driver).

Features

• Standard PC Power Good: UV Detection on 4 rails UV Detection of AC/Bulk supply OV Detection on 4 rails Open collector PG out Programmable Fault output: OV OV plus UV OV plus UV after start-up delay OV Crow-Bar Driver Digital ON/OFF input 2.5 V Voltage Reference Operates from 5 V or 12 V rail Top view • • • • • Pin Configuration — VCC +12V +5V +3.3V –5V –12V GND HYST 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 FAULT VREF UVB DELAY POK PGCAP AC OFF VCC +12V +5V +3.3V –5V –12V GND HYST 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC +12V +5V +3.3V –12V GND HYST OFF FAULT VREF UVB DELAY POK PGCAP AC OFF 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 CBD FAULT VREF UVB DELAY POK PGCAP AC VCC +12V +5V +3.3V –12V GND HYST GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC +12V +5V +3.3V –12V GND HYST OFF CBD FAULT VREF UVB DELAY POK PGC [ … ]

AS2333 PDF File



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