APW7080KA Просмотр технического описания (PDF) - Anpec Electronics
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APW7080KA Datasheet PDF : 23 Pages
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APW7080
Block Diagram
VIN
VCC
FB
COMP
EN
VCC
4.2V Regulator
and
Power-On-Reset
POR
Current
Limit
70%VREF
UVP
Soft-Start
Soft-Start
and
Fault Logic
VREF
0.8V
Error
Amplifier
2.5V
0.8V
ENOK
Enable
Over
Temperature
Protection
Current Sense
Amplifier
Inhibit
Gate
Control
UG
Gate
Driver
Current
Compartor
Slope
Compensation
Oscillator
FB
380kHz
VIN
5.5V
VIN-to-UGND
Linear Regulator
UGND
LX
GND
Typical Application Circuit
1. 4.5~26V Single Power Input Step-down Converter (with Ceramic Input/Output Capacitors)
C1
10µF
VIN
4.5~26V
4
VIN
C2
3
1µF
VCC
UGND
L1
C3
4A
1µF
LX 9
LX 5
R5
U1
VIN
100kΩ 2
APW7080
EN
6 COMP
FB 7
D1
R1
1%
R4
GND
R2
C6
1%
C5
C7
(Optional)
VOUT
0.8V~90%VIN
C4
/4A
22µF
Copyright © ANPEC Electronics Corp.
11
Rev. A.6 - Jun., 2008
www.anpec.com.tw
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