AMS1070
TYPICAL APPLICATION CIRCUIT
INPUT
4.75V to 23V
R4
100K
7
EN
C5
10nF
2
IN
1
BS
SW
3
L1
10uH (4A)
R1
26.1K
D1
B130
(optional)
C1
10uF/25V
CERAMIC X 2
8
AMS1070
SS
GND
4
FB
COMP
6
OUTPUT
3.3V
3A
5
C4
0.1uF
C6
(optional)
C3
3.9nF
R3
6.8K
R2
10K
C2
22uF/6.3V
CERAMIC X 2
V
OUT
=0.925X(1+R1/R2)
AMS1070
with 3.3V Output, 22uF/6.3V Ceramic Output Capacitor
Recommended Resistance Values
VOUT
1.8V
2.5V
3.3V
5V
12V
R1
9.53K
16.9K
26.1K
44.2K
121K
R2
10K
10K
10K
10K
10K
6
Advanced Monolithic Systems http://www.ams-semitech.com