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WT7527 Datasheet Download - Weltrend

Номер произв WT7527
Описание PC Power Supply Supervisor
Производители Weltrend
логотип Weltrend логотип 


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WT7527 Даташит, Описание, Даташиты
偉詮電子股份有限公司
Weltrend Semiconductor, Inc.
WT7527
PC POWER SUPPLY SUPERVISOR
Data Sheet
Version 1.20
June 22, 2007
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242
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







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WT7527 Даташит, Описание, Даташиты
WT7527
Rev. 1.20
GENERAL DESCRIPTION
The WT7527 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 Voltage Detector (OVD) monitors VX, V33, V5, V12A and V12B input voltage level. The
Under Voltage Detector (UVD) monitors V33, V5, V12A and V12B input voltage level. The Over Current
Detector (OCD) monitor I33&V33, I5&V5, I12A&V12A and I12B&V12B input current sense. The pin VX
provides an extra protection function. When OVD or UVD or OCD or VX 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 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 Voltage Detector (OVD) monitors VX, V33, V5, V12A and V12B input voltage.
The Under Voltage Detector (UVD) monitors V33, V5, V12A and V12B input voltage.
The Over Current Detector (OCD) monitors I33&33, I5&V5, I12A&V12A and I12B&V12B input pins.
The VX > 1.2V provide an extra protection.
Both of the power good output (PGO) and fault protection latch (FPOB) are Open Drain Output.
75 / 600 ms time delay for UVD / OCD / VX .
300 ms time delay for PGO.
38 ms for PSONB input signal De–bounce.
14 us for OVD internal signal De–glitch.
60 us for UVD / VX internal signal De–glitch.
20 ms for OCD internal signal De–glitch.
73 us for PGI internal signal De–glitch.
4 ms for PSONB turn-off FPOB.
PIN ASSIGNMENT AND PACKAGE TYPE
Pin assignment
PGI
GND
FPOB
PSONB
I12A
RI
I12B
V12B
WT7527
1 16
2 15
3 14
4 13
5 12
6 11
7 10
89
PGO
VCC
V5
V33
V12A
I33
I5
VX
Weltrend Semiconductor, Inc.
Page 2







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WT7527 Даташит, Описание, Даташиты
ORDERING INFORMATION
Part Number
WT7527–NN160–1D
WT7527–NN161–1D
WT7527–SN160–1D
WT7527–SN161–1D
Package Type
16-Pin Plastic DIP, Pb-free
16-Pin Plastic SOP, Pb-free
WT7527
Rev. 1.20
Note
PIN DESCRIPTION
Pin Name
PGI
GND
FPOB
PSONB
I12A
RI
I12B
V12B
VX
I5
I33
V12A
V33
V5
VCC
PGO
I/O Description
I Power good input signal pin
P Ground
O Fault protection output pin, open drain output
I On/Off switch input
I 12VA over current protection sense input
I Current sense adjust input
I 12VB over current protection sense input
I 12VB over voltage & under voltage & over current sense input
pin
I Extra protection sense input
I 5V over current protection sense input
I 3.3V over current protection sense input
I 12VA over voltage & under voltage & over current sense input
pin
I 3.3V over voltage & under voltage & over current sense input pin
I 5V over voltage & under voltage & over current sense input pin
I Power supply
O Power good output signal pin, open drain output
Weltrend Semiconductor, Inc.
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