PWM Controller. FP5453 Datasheet

FP5453 Controller. Datasheet pdf. Equivalent


Part FP5453
Description Dual PWM Controller
Feature FP5453 Dual PWM Controller with Short Circuit Restart Function General Description The FP5453 is a s.
Manufacture Feeling Technology
Datasheet
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FP5453
FP5453
Dual PWM Controller with Short Circuit Restart Function
General Description
The FP5453 is a single chip composed of a 2.5V precision voltage reference regulator,
totem-pole output stages, two pulse width modulation control circuits each with one error amplifier and
duty comparator (DTC). Its built-in functions includes under-voltage lockout circuit (UVLO) and
programmable auto-restart timer for short circuit protection (SCSAR). With above features, it offers
space and low cost solutions in many applications such as the DC / DC converter.
FP5453, a high performance IC, is designed to complete a control circuit with few external
components. The circuit diagram of the typical application example is shown in below.
Features
Wide Operating Voltage Range: 3.6~25V
Feedback Reference Voltage: 2.5V
Oscillator Frequency: Max. 1.2MHz
Reference Voltage Precision: 2%
Low Quiescent Supply Current Under 4mA
Totem-pole Output Stage
Variable Duty Control (DTC)
Short Circuit Shutdown / Auto Re-start Function (SCSAR)
UVLO Protection Function
Package: SOP-16L / SOP-16L (EP) / SSOP-16L
Applications
HUB / Router
Set Top Box
HDD Server
CATV
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 1.0
1/22



FP5453
Function Block Diagram
DTC2
VCC RT
CT
FB2
EA2+
EA2-
SCSAR
EA1+
EA1-
FB1
DTC1
1.2 V
Oscillator
Reference
Voltage
PWM
COMP
SCSAR Protection Circuits
UVLO
R
PWM
COMP
FP5453
OUT2
VREF
OUT1
GND
Pin Descriptions
SOP-16L
Name
CT
RT
EA1+
EA1-
FB1
DTC1
OUT1
GND
VCC
OUT2
DTC2
FB2
EA2-
EA2+
SCSAR
VREF
No. I / O
Description
1
I
Connect a Capacitor to This Pin to Adjust
Oscillator Frequency
2
I
Connect a Resistor to This Pin to Adjust
Oscillator Frequency
3 I Error Amplifier 1 Non-inverting Input
4 I Error Amplifier 1 Inverting Input
5 O Error Amplifier 1 Output
6 I Output 1 Duty Comparator
7 O Totem-pole Output 1
8 P IC Ground
9 P IC Power Supply
10 O Totem-pole Output 2
11 I Output 2 Duty Comparator
12 O Error Amplifier 2 Output
13 I Error Amplifier 2 Inverting Input
14 I Error Amplifier 2 Non-inverting Input
15 I Short Circuit Protection Input
16 O 2.5V Reference Voltage Output
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 1.0
2/22







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