CONTROL IC. FP5453 Datasheet

FP5453 IC. Datasheet pdf. Equivalent


Part FP5453
Description DUAL PWM CONTROL IC
Feature Technology FP5453 DUAL PWM CONTROL IC WITH SHORT CIRCUIT RESTART FUNCTION GENERAL DESCRIPTION The.
Manufacture Feeling Technology
Datasheet
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FP5453
Technology
FP5453
DUAL PWM CONTROL IC
WITH SHORT CIRCUIT RESTART FUNCTION
GENERAL DESCRIPTION
The FP5453, a 1-chip composed of totem-pole output stage pulse-width-modulation control
circuits with two error amplifiers and dead-time comparators (DTC), the FP5453 contains a
2.5V precision voltage reference regulator, under-voltage lockout circuit (UVLO),
programmable auto-restart timer for short circuit protection (SCSAR), applied to offer space
and low cost in many applications such as the DC/DC converter.
Using few external components, FP5453, a high performance integrated IC, is designed for a
control circuit. The circuit diagram of the typical application example is as below.
FEATURES
Fixed Reference Voltage: 2.5V
Reference Voltage Precision: 2%
Totem-pole output stage
Low quiescent supply current under 4mA
Wide operating voltage range: 3.6~25V
Variable dead-time control (DTC)
UVLO protection function
Short circuit shutdown/auto re-start function (SCSAR)
Oscillator Frequency: Max. 1.2MHz
Package: SOP16/PDIP16/SSOP16/SOP16(EP)
SOP16
PDIP 16
TYPICAL APPLICATION
HUB/Router
Set Top Box
HDD Server
CATV
SSOP 16
Website: http://www.feeling-tech.com.tw
Rev0.3 Jan. 25, 2007
P1/FP5453



FP5453
Technology
FUNCTIONAL BLOCK DIAGRAM
9
11
2
1
FP5453
12
14
13
1.2 V
Oscillator
PWM
COMP
Reference
15 Voltage
SCSAR Protection Circuits
UVLO
3R
4
PWM
COMP
5
6
10
16
7
8
MARK VIEW
1 16
2 15
3 14
4 13
5 12
6 11
7 10
89
Website: http://www.feeling-tech.com.tw
PIN DESCRIPTION
NAME NO. STATUS
DESCRIPTION
CT 1
I Connect a Capacitor for Oscillator
RT 2
I Connect a Resistor for Oscillator
EA1+ 3
I Error Amplifier 1 Non-inverting Input
EA1- 4
I Error Amplifier 1 Inverting Input
FB1 5
O Error Amplifier 1 Feedback Output
DTC1 6
I Output 1 Dead-Time Comparator
OUT1 7
O Totem-pole Output 1
GND 8
P IC Ground
VCC 9
P IC Power Supply
OUT2 10
O Totem-pole Output 2
DTC2 11
I Output 2 Dead-Time Comparator
FB2 12
O Error Amplifier 2 Feedback Output
EA2- 13
I Error Amplifier 2 Inverting Input
EA2+ 14
I Error Amplifier 2 Non-inverting Input
SCSAR 15
I Short Circuit Protection Input
VREF 16
O 2.5V Reference Voltage Output
Rev0.3 Jan. 25, 2007
P2/FP5453







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