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Número de pieza
componentes Descripción
APW7064 Ver la hoja de datos (PDF) - Anpec Electronics
Número de pieza
componentes Descripción
Fabricante
APW7064
Synchronous Buck PWM Controller
Anpec Electronics
APW7064 Datasheet PDF : 19 Pages
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APW7064
Block Diagram
VCC
GND
Power-On
Reset
BOOT
UGATE
Digital
Soft-Start
Error
Amp
50%V
REF
:
2
U.V.P
Comparator
PWM
Comparator
Gate
Control
V
REF
FB
COMP
Oscillator
Sawtooth
Wave
F
OSC
200kHz
PHASE
LGATE
Typical Application Circuit
12V
1N4148
10R
1
µ
F
Q3
2N7002
ON/OFF
10nF
1nF
6.8K
5
VCC
BOOT
1
7
COMP
UGATE
2
PHASE
8
4
LGATE
6
FB
GND
3
4.7K
2.67K
10nF 1.5K
V
IN
(12V)
1
µ
H
0.1
µ
F
10
µ
F
2200
µ
Fx2
100
µ
F
Q1
APM2509
4.5
µ
H
V
OUT
(3.3V)
Q2
APM2506
2200
µ
Fx2
Copyright
©
ANPEC Electronics Corp.
9
Rev. A.3 - Aug., 2009
www.anpec.com.tw
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