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APW1683 Datasheet

  • APW1683

  • 3-Channel Power Supply Supervisor

  • 7頁(yè)

  • ANPEC

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APW1683
3-Channel Power Supply Supervisor
Features
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Over Voltage Protection and Lock Out for
!
3.3 V, 5 V, and 12 V
Under Voltage Protection and Lock Out for
!
3.3 V and 5 V
Fault Protection Output with Open Drain
Output Stage
General Description
The APW1683 is designed to minimize the external
components of personal-computer switching power
supply systems. It provides protection circuits, power
good indicator, fault protection output
FPO
and
PSON
control.
OVP (over voltage protection) monitors 3.3V, 5 V,
and 12 V (12 V OV detects via V
CC
terminal). UVP
(under voltage protection) monitors 3.3V and 5V.
When an OV or UV condition is detected, the PGO
(power good output) is set to low and
FPO
is latched
to high.
PSON
from low to high resets the protection
latch. There is a 2.3ms turn-off delay from
PSON
to
FPO
. There is no delay during turn on.
Power good feature monitors PGI, 3.3V and 5V un-
der voltages, and issues a power good signal when
they are ready.
Open Drain Power Good Output Signal for
!
Power Good Input, 3.3 V and 5 V
300 ms Power Good Delay
2.3 ms
PSON
Control to
FPO
Turn-Off
Delay
38 ms
PSON
Control Debounce
75 ms Delay for 3.3V and 5V Under Voltage
!
Protection
73
碌s
Width Noise Deglitches
Wide Power Supply Voltage Range
from 4 V to 15 V
Intelligent Under Voltage Protection to Pre
vent Instantaneously AC Power Black Out
Pin Description
PGI
GND
1
2
3
4
8
7
6
5
PGO
VCC
VS5
VS33
Applications
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PC Switching Power Supply
FPO
PSON
Ordering Information
APW1683
Handling Code
Temp. Range
Package Code
Package Code
J : DIP - 8
Temp. Range
C : 0 to 70
擄
C
Handling Code
TU : Tube
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright
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ANPEC Electronics Corp.
Rev. P.2 - Aug., 2001
1
www.anpec.com.tw

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