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S3525G-S14-T Datasheet(PDF) 2 Page - Unisonic Technologies |
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S3525G-S14-T Datasheet(HTML) 2 Page - Unisonic Technologies |
2 / 9 page S3525 CMOS IC UNISONICTECHNOLOGIESCO.,LTD 2 of 9 www.unisonic.com.tw QW-R502-105.B PIN ASSIGNMENT FUNCTION DESCRIPTION PGI PSONB UV&OC Protection OV Protection FPOB PGO PGI<1.2V L No No L L PGI<1.2V L No Yes H L PGI<1.2V L Yes No L L PGI<1.2V L Yes Yes H L PGI>1.2V L No No L H PGI>1.2V L No Yes H L PGI>1.2V L Yes No H L PGI>1.2V L Yes Yes H L X H X X H L Note: FPOB=L means: fault is not latched. FPOB=H means: fault is latched PGO=L means: fault. PGO=H means: No fault X=do not care PIN DESCRIPTIONS PIN NO. PIN NAME TYPE DESCRIPTION 1 PGI Input Power Good Input. For ATX SMPS, it detects AC line voltage through the main transformer. 2 GND Supply Ground 3 FPOB Output Fault Protection Output. Output signal to control the primary PWM IC through an opto-coupler. When FPOB is low, the PWM IC is enabled. 4 PSONB Input Remote On/Off logic input from CPU or main-board. The power supply will be turned on/off after 38mS delay. 5 IS12AB Input 12V AB over current protection. 6 RI Input Reference setting. One external resistor Ri connected between RI and GND pin will determine a reference current, IREF = 1.20/Ri, for OCP programming. 7 V12B Input 12V over/under voltage protection. 8 IS5 Input 5V over current protection. 9 IS33 Input 3.3V over current protection 10 V12A Input 12V over/under voltage protection. 11 V33 Input 3.3V over/under voltage protection 12 V5 Input 5V over/under voltage protection. 13 VDD Supply Power supply. 14 PGO Output Power good logic output, 0 or 1(open-drain). Power good=1 means that the power supply is good for operation. The power good delay is 300mS. |
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