Rainbow Electronics MAX1791 - Manual (Page 9)

MAX1762/MAX1791
High-Efficiency, 10-Pin µMAX, Step-Down
Controllers for Notebooks
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Figure 1. Typical Application Circuit for Fixed Voltage
FB
Q1
L1
7 µH
Q2
C2
1 µF
C3
0.1 µF
GND
C1
10 µF
CS
DH
C4
220 µF
VP
DL OUT
REF
SHDN
V VP
V OUT
VL
MAX1762
MAX1791
10 Ω
1 µF
Figure 2. Typical Application Circuit for Adjustable Output V OUT > 1.25V
FB
Q1
R1
R2
L1
7 µH
Q2
C2
1 µF
C3
0.1 µF
GND
C1
10 µF
CS
DH
C4
220 µF
VP
DL OUT
REF
SHDN
V VP
V OUT
VL
MAX1762
MAX1791
10 Ω
1 µF
Figure 3. Typical Application Circuit for V OUT < 1.25V
FB
Q1
R1
R2
L1
7 µH
Q2
C2
1 µF
C3
0.1 µF
GND
C1
10 µF
CS
DH
C4
220 µF
VP
DL OUT
REF
SHDN
V VP
V OUT
VL
MAX1762
MAX1791
10 Ω
1 µF