amc7660 ADDtek Corp, amc7660 Datasheet - Page 7

• Manufacturer Part Number: amc7660
• Description: Converter Control Circuit
• Manufacturer: ADDtek Corp

Copyright © 2006 ADDtek Corp.
28V/175mA
V
V
5V/500mA
OUT
OUT
Co
Co
330uF
470uF
D1
170uH
220uH
D1
Figure 2 – Step-Down Converter Application Circuit
180
Figure 1 – Step-Up Converter Application Circuits
8
1
2
8
1
2
OC1
OC2
Q1
OC1
OC2
Q1
100
100
Q2
Q2
7
3
3
7
1.5nF
470pF
I sense
C
I sense
C
T
T
Q
Q
Rsc
0.22
Rsc
0.33
7
Oscillator
R
S
Oscillator
R
S
6
6
1.25V
1.25V
R1
47K
3.6K
R1
5
4
5
4
R2
2.2K
R2
1.2K
DD057_C -- JUNE 2006
AMC7660
12V
100uF
100uF
25V
V
V
IN
IN