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SG6105 Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers |
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SG6105 Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers |
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1 / 13 page  Product Specification Power Supply Supervisor + Regulator + PWM SG6105 ©System General Corp. - 1 - www.sg.com.tw Version 2.3(IRO33.0011.B0) June 19, 2003 FEATURES 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 APPLICATIONS Switching mode power supply for Computers, such as: ATX NLX SFX (micro-ATX) DESCRIPTION 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. Two internal precision TL431 shunt regulators provide stable reference voltage and driver for 3.3V and 5V-standby regulation. Utilizing minimum number of external components, the SG6105 includes all of the functions for push-pull and/or half-bridge topology, decreasing the production cost and PCB space, and increasing the MTBF for power supply. MARKING DIAGRAMS PIN CONFIGURATION T: D = DIP XXXXXXX: Wafer Lot YY: Year; WW: Week V: Assembly Location 20 1 SG6105T XXXXXXXYYWWV 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 PSON V33 V5 OPP UVAC NVP V12 OP2 OP1 PG FB2 VREF2 VREF1 FB1 GND COMP IN SS RI VCC |
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