AA18380 Agamem Microelectronic, AA18380 Datasheet - Page 11

• Manufacturer Part Number: AA18380
• Description: Switching Regulator Controller
• Manufacturer: Agamem Microelectronic

PRELIMINARY
■TYPICAL APPLICATION EXAMPLE
©Copyright Agamem Microelectronics Inc.
(3V)
Vin
(12V)
Vin
33uF
33uF
C3
0.1uF
BR/CTL
SCP
Vcc
IN-
BR/CTL
0.1uF
4.7KΩ
C1
SCP
Vcc
IN-
1
2
3
4
Agamem Microelectronics Inc.
2N7002
R6
390Ω
Q2
1
2
3
4
Buck Type - Step Down
Boost Type - Step Up
Vout = 0.5 X (1 + R1/R2)
8
7
6
5
270pF
OUT
OSC
GND
FB
1.bootstrap, single end push pull style.
2.Vout = 0.5 X (1 + R1/R2)
3.For example, R1=5.6KΩ, R2=1KΩ, Vout=3.3V
3KΩ
8
7
6
5
270pF
68pF
C5
GND
OSC
OUT
FB
470Ω
0.1uF
11
R5
3KΩ
20KΩ
2N3904
2N3904
2SA1585S
0.1uF
C4
2KΩ
Q1
AA18380
Switching Regulator Controller
22uH
FZT489
1N5821
L1
D1
FR154
22uH
www.agamem.com.tw
R1
R2
18KΩ
2KΩ
R2
1KΩ
R1
9KΩ
10uF
47uF
C6
Vout
(5V)
104pF
2007/1/15