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Unisonic Technologies

3521 Datasheet Preview

3521 Datasheet

PWM CONTROLLER

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UNISONIC TECHNOLOGIES CO., LTD
3521
PWM CONTROLLER WITH
SUPERVISORY CIRCUIT FOR
SWITCHING POWER SUPPLY
CMOS IC
„ DESCRIPTION
UTC 3521 PWM controller is designed for switching mode power
supply for PCs. It provides all the functions necessary to monitor and
control the output of the power supply. Remote ON/OFF control,
power good circuitry, some protection features against over-voltage
and over-power are implements.
„ FEATURES
* Over-Voltage Protection for 3.3V, 5V and 12V
* Under-Voltage Detection for 3.3V, 5V and 12V
* Over-Power Protection
* Remote ON/OFF Function
* Power Good Circuitry
* Delay Time for PG Signal
* Delay Time for Over-Voltage and Under-Voltage Protection
* On-Chip Oscillator and Error Amplifier
DIP-16
„ ORDERING INFORMATION
Ordering Number
Lead Free Plating
Halogen Free
3521L-D16-T
3521G-D16-T
Package
DIP-16
Packing
Tube
3521L-D16-T
(1)Packing Type
(2)Package Type
(3)Lead Free
(1) T: Tube
(2) D16: DIP-16
(3) L: Lead Free, G: Halogen Free
www.unisonic.com.tw
Copyright © 2010 Unisonic Technologies Co., Ltd
1 of 6
QW-R502-034.D




Unisonic Technologies

3521 Datasheet Preview

3521 Datasheet

PWM CONTROLLER

No Preview Available !

3521
„ PIN CONFIGURATION
V33
V5
V12
PT
GND
CT
C1
C2
1
2
3
4
5
6
7
8
16 VADJ
15 OPNEGIN
14 OPOUT
13 VCC
12 DET
11 PG
10 TPG
9 REM
„ PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
PIN NAME
V33
V5
V12
PT
GND
CT
C1
C2
REM
TPG
PG
DET
VCC
OPOUT
OPNEGIN
VADJ
TYPE
I
I
I
I
P
O
O
I
O
I
P
O
I
I
FUNCTIONS
OVP/UVP Input For 3.3V
OVP/UVP Input For 5V
OVP/UVP Input For 12V
Additional OVP Protection
Ground
Cap FOR Osciilation Frequency
Output 1
Output 2
Remote ON/OFF Pin.
Power Good Delay Time Setting
Power Good Signal Out.
Power Good Signal Detection Input
Supply Voltage For IC
OP AMP Output
OP AMP Negative Input
Voltage Adjust Pin
CMOS IC
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 6
QW-R502-034. D


Part Number 3521
Description PWM CONTROLLER
Maker Unisonic Technologies
PDF Download

3521 Datasheet PDF






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