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WT7525 반도체 회로 부품 판매점

PC POWER SUPPLY SUPERVISOR



Weltrend Semiconductor 로고
Weltrend Semiconductor
WT7525 데이터시트, 핀배열, 회로
Weltrend Semiconductor, Inc.
`
WT7525
PC POWER SUPPLY SUPERVISOR
Data Sheet
REV. 0.20
March 08, 2004
The information in this document is subject to change without notice.
©Weltrend Semiconductor, Inc. All Rights Reserved.
24 2
2F, No. 24, Industry E. 9th RD., Science-Based Industrial Park, Hsin-Chu, Taiwan
TEL:886-3-5780241 FAX:886-3-5794278.5770419
www.DataSheet.in


WT7525 데이터시트, 핀배열, 회로
WT7525
Rev. 0.20
GENERAL DESCRIPTION
The WT7525 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, V12A and V12B input voltage
level. The Over Current Detector (OCD) monitor IS33, IS5, IS12A and IS12B input current sense. When
OVD or UVD or OCD detect the fault voltage level, the FPOB is latched HIGH and PGO go low. The
latch can be reset by PSONB go HIGH. There is 2.4 ms delay time for PSONB turn off FPOB.
When OVD and UVD and OCD detect the right voltage level, the power good output (PGO) will be
issue.
FEATURES
The Over / Under Voltage Detector (OVD / UVD) monitors V33, V5, V12A and V12B input voltage
level.
The Over Current Detector (OCD) monitors IS33, IS5, IS12A and IS12B input current sense.
Both of the power good output (PGO) and fault protection latch (FPOB) are Open Drain Output.
75 / 300 ms time delay for UVD.
300 ms time delay for PGO.
38 ms for PSONB input signal De–bounce.
73 us for internal signal De–glitches.
2.4 ms time delay for PSONB turn-off FPOB.
PIN ASSIGNMENT AND PACKAGE TYPE
Pin assignment
WT7525-140
PGI 1 14
GND 2 13
FPOB 3 12
PSONB 4 11
IS12AB 5 10
RI 6
9
V12B 7
8
PGO
VCC
V5
V33
V12A
IS33
IS5
WT7525-160
PGI 1 16
GND 2 15
FPOB 3 14
PSONB 4 13
IS12A 5 12
RI 6 11
NC 7 10
V12B 8 9
WT7525-161
PGO
PGI 1 16
VCC
GND 2 15
V5 FPOB 3 14
V33 PSONB 4 13
V12A IS12A 5 12
IS33
RI 6 11
IS5 IS5 7 10
IS12B V12B 8 9
PGO
VCC
V5
V33
VCC2
V12A
IS33
IS12B
Weltrend Semiconductor, Inc.
www.DataSheet.in
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