代理产线

SG6105DZ

 2007-04-11

【基本数据】

【产品特性】

·PC half-bridge (or 494) power supply supervisor + two 431 + PWM
·High integration & few external components
·Over-voltage protection for 3.3V, 5V and 12V
·Under-voltage protection for 3.3V, 5V and 12V
·Under-voltage protection for -12V and/or -5V
·Over-power and short-circuit protection
·Power-down warning circuitry
·Power good circuitry
·Delay time for PSON and PG signal
·Remote ON/OFF function
·On-chip oscillator and error amplifier
·Two shunt regulator for 3.3V and 5V-Standby
·Latching PWM for cycle-by-cycle switching
·Push-pull PWM operation and totem pole outputs
·Soft-start and maximum 93% duty cycle
SG6105DZ 20-pin DIP(Lead Free)

【产品应用】

·ATX Power Supplies
·NLX Power Supplies
·SFX (micro-ATX) Power Supplies

【文字介绍】

The SG6105 controller is designed for switching mode power supply for desktop PCs. It provides all the functions necessary to monitor and control the output of the power supply. Remote ON/OFF control, power good circuitry, some protection features against over-voltage and over-power are implemented. It directly senses all the output rails for OVP without the need of external dividers.
An innovated AC-signal sampling circuitry provides a sufficient power-down warning signal for PG. A built-in timer generates accuracy timing for control circuit including the PS-off delay. The cycle-by-cycle PWM switching prevents the power transformer from the saturation and ensures the fastest response for the short-circuit protection which greatly reduce the stress for power transistors.