WT7502 – PC POWER SUPPLY SUPERVISOR

WT7502 Datasheet PDF learn more.

Part number : WT7502

Functions : This is a kind of semiconductor, PC POWER SUPPLY SUPERVISOR.

Pin arrangement :

Package information :

Manufacturer : Weltrend Semiconductor

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WT7502 Datasheet PDF

The texts in the PDF file :

偉詮電子股份有限公司 Weltrend Semiconductor, Inc. ` WT7502 PC POWER SUPPLY SUPERVISOR Data Sheet REV. 1.01 Feb. 26, 2008 The information in this document is subject to change without notice. ©Weltrend Semiconductor, Inc. All Rights Reserved. 新竹市科學工業園區工業東九路24號2樓 2F, No. 24, Industry E. 9th RD., Science-Based Industrial Park, Hsin-Chu, Taiwan TEL:886-3-5780241 FAX:886-3-5794278.5770419 Email:support@weltrend.com.tw Datasheet pdf – http:/// WT7502 Rev. 1.01 GENERAL DESCRIPTION The WT7502 provides protection circuits, power good output (PGO), fault protection latch (FPOB), and a protection detector function (PSONB) control. It can minimize external components of switching power supply systems in personal computer. The Over / Under Voltage Detector (OVD / UVD) monitors V33, V5 and VCC input voltage level. When OVD or UVD detect the fault voltage level, the FPOB is latched HIGH and PGO go low. When PGI detect the fault voltage level, the FPOB would be kept LOW and PGO go low. The latch can be reset by PSONB go HIGH. There is 3.5 ms delay time for PSONB turn off FPOB. When PGI and OVD and UVD detect the right voltage level, the power good output (PGO) will be issue. FEATURES • • • • • • • • • The Over / Under Voltage Detector (OVD / UVD) monitors V33, V5 and VCC input voltage. Both of the power good output (PGO) and fault protection latch (FPOB) are Open Drain Output. 75 ms time delay for UVD. 300 ms time delay for PGO. 38 ms for PSONB input signal De–bounce. 73 us for PGI / UVD internal signal De–glitches. 55 us for OVD internal signal De–glitches. 3.5 ms time delay for PSONB turn-off FPOB. The UVD would been disabled when PGI < 1.2V. PIN ASSIGNMENT AND PACKAGE TYPE WT7502 PGI GND FPOB PSONB 1 2 3 4 8 7 6 5 PGO VCC V5 V33 ORDERING INFORMATION PACKAGE 8–Pin Plastic DIP 8–Pin Plastic SOP CHIP WT7502–N084 WT7502–S084 WT7502-HXXX L [ ... ]

WT7502 PDF File



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