Rainbow Electronics MAX799 - Manual (Page 31)

MAX796/MAX797/MAX799
Step-Down Controllers with
Synchronous Rectifier for CPU Power
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MAX797
MAX495
CSL
0.1 µ F
0.01 µ F
0.01 µ F
4.7 µ F
I OUT
2.5A
V IN
10.5V to
28V
GND FB
V+
0.33 µ F
0.33 µ F
L1
10 µ H
0.025 Ω
SHDN
9
3
2
6
7
4
SYNC
SS
DL
5
7 4
1
6
13
PGND
12
LX
15
DH
16
SKIP
2
BST
14
VL
11
10
REF
3
CSH
8
3X
100
µ F
16V
2X
22
µ F
35V
1.0k
39k
D2
1.7 Ω
T1
D1
D3
Q1
Q2
D1, D3 CENTRAL SEMI. CMPSH-3
D2 NIEC EC10QS02L, SCHOTTKY RECT.
L1 DALE IHSM-4825 10
µ H 15%
T1 DALE LPE-3325-A087, CURRENT TRANSFORMER, 1:70
Q1, Q2 MOTOROLA MMSF5N03HD
Figure 22. Battery-Charger Current Source
____________________________________________Application Circuits (continued)