ANPEC APW1681JC-TU Datasheet

APW1681

3-Channel Power Supply Supervisor

Features General Description

• 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

• Open Drain Power Good Output Signal for

! Power Good Input, 3.3 V and 5 V

• 300 ms Power Good Delay

• 2.36 ms Control to Turn-Off

Delay

• 38 ms

PSON

Control Debounce

PSON

FPO

• 75 ms Delay for 3.3V and 5V Under Voltage

! Protection

• 73 µs 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

The APW1681 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

terminal). UVP

CC

(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
to high.

from low to high resets the protec-

PSON

FPO

is latched

tion latch. There is a 2.36ms turn-off delay
from

PSON

to

. There is no delay during turn

FPO

on.
Power good feature monitors PGI, 3.3V and 5V un-

der voltages, and issues a power good signal when
they are ready.

Pin Description

8

PGO

7

VCC

6

VS5

5

VS33

Applications

• PC Switching Power Supply

PGI

GND

FPO

PSON

1
2
3
4

Ordering Information

APW1681

Handling Code
Temp. Range
Package Code

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  ANPEC Electronics Corp.
Rev. A.2 - Feb., 2001

Package Code
J : DIP - 8
Temp. Range
C : 0 to 70 C
Handling Code
TU : Tube

°

www.anpec.com.tw1

APW1681

Block Diagram

V

CC

V

REF

V

S5

V

REF

RL=100k

V

S33

V

REF

RL=100k

V

REF

V

REF

V

PGI

REF

RL=100k

5 OV

­+

Ω

3.3 OV

-

+

Ω

3.3 UV

-

+

5 UV

­+

-

+

12 OV

-

+

Ω

73µs

Debounce

Debounce

R

75ms
Delay EN
Counter

Reset

R

73µs

73µs

Debounce

POR

2.36 ms
Delay

EN

R

Vreg

=3.5V

V

DD

R

R
S

Reset

Dominent

Latch

R

300ms

EN Delay

Counter

Bandgap

Reference

V

1.192V

RTT

Q

Reset

38ms

Debounce

REF

150µA

FPO

V

DD

PSON

PGO

GND

Absolute Maximum Ratings

Symbol Parameter Rating Unit

V

CC

VS5, VS33 5V and 3.3V Input Voltage(Note 1) 8 V

FP O Fa ult P rot ec tio n O u tp ut Vo ltag e 16 V

PSON ON/OFF C ontrol Input Voltage(Note 1) 8 V

PGI Power Good Input Voltage(Note 1) 8 V

PGO Power Good Output Voltage(Note 1) 8 V

T

T

STG

T

No te 1 : F o r a s h o rt p e r iod (< 1 s e c ) o v e r v o lta ge te s t, t he s e p in s can w ith sta nd up to 1 2 V.

Copyright  ANPEC Electronics Corp.
Rev. A.2 - Feb., 2001

Supply Voltage 16 V

Ambient Temperature Range 0 to 70

A

Storage Temperature Range -65 to +150
Lead Temperature (Soldering, 10 second) 260

L

www.anpec.com.tw2

C

°

C

°

C

°

APW1681

Pin Function Description

Terminal

NO. I/O Terminal Function Description

Name

V

S33

V

S5

5 I 3.3 V over/under voltage protection input pin
6 I 5 V over/under voltage protection input pin

GND 2 Ground
FPO

3 O Inverted fault protection output, open drain output stage

PGI 1 I Power good input signal pin

PGO 8 O Power good output signal pin, open drain output stage

PSON

V

CC

4 I ON/OFF con tr ol inp ut pin
7 I Supply voltage/12 V over voltage protection input pin



Thermal Characteristics

Symbol Parameter Value Unit

R

THJA

Electrical Characteristics

Thermal Resistance from Junction to Ambient in F ree Air

DIP-8 129 K/W

VCC=5V, TA=25°C ( unless otherwise noted)

Over Voltage Protection

Over Voltage Threshold

I

V

Leakage Current (

LKG

Low Level Output Voltage (

OL

Pin Pull High Voltage 15 V

FPO

OH

FPO

PGI and PGO

Input Threshold Voltage (PGI) 1.14 1.19 1.24 V

Under Voltage Protection Delay Time
(3.3V and 5V)

Copyright  ANPEC Electronics Corp.
Rev. A.2 - Feb., 2001

V

S33

V

S5

V

CC

)V(

I

)

FPO

SINK

I

SINK

V

S33

V

S5

)=5V 5

FPO

= 10mA 0.3V
= 30mA 0.7

APW1681Symbol Parameter Test Conditions

Min. Typ. Max.

3.7 3.9 4.1

5.7 6.1 6.5

13.3 13.8 14.3

2.55 2.7 2.83Under Voltage threshold

4.1 4.3 4.5
49 75 114 ms

www.anpec.com.tw3

Unit

V

A

µ

V

V