Part Number: AT2005B
Function: Controller chip for the system power supply
Package: DIP 16 Pin Type
Manufacturer: Advanced Technology Eletroncis ( ATE )
Images:
1 page
Description
The AT2005B microcircuit was developed by ATE for use in push-pull pulse converters of ATX class system power supplies as a PWM control microcircuit.
It simultaneously performs the functions of a voltage supervisor, a voltage regulator, as well as a PG (PW-OK) signal conditioning function and a remote control function.
Adjustment and stabilization of output voltages is carried out by the method of pulse-width
modulation (PWM).
Features
1. Formation of control signals for powerful transistors of a push-pull converter
2. Change in the width of these control pulses when the magnitude of the output voltages changes
3. Control of positive voltage generated by the power supply (+3.3V, +5V +12V)
4. Protection against excess of positive output voltages
5. Protection against reduction of positive output voltages
6. Protection against voltage drop in negative voltage channels (-5V and -12V)
7. Power Good (PG) signal generation
8. Start-up and shutdown control of the power supply in accordance with the PSJ3N signal.
[…]
2 page
