Rainbow-electronics MAX1791 Manual de usuario Pagina 9

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MAX1762/MAX1791
High-Efficiency, 10-Pin µMAX, Step-Down
Controllers for Notebooks
_______________________________________________________________________________________ 9
Figure 1. Typical Application Circuit for Fixed Voltage
FB
Q1
L1
7µH
Q2
C2
1µF
C3
0.1µF
GND
C1
10µF
CS
DH
C4
220µF
VP
DL
OUT
REF
SHDN
V
VP
V
OUT
VL
MAX1762
MAX1791
10
1µF
Figure 2. Typical Application Circuit for Adjustable Output V
OUT
> 1.25V
FB
Q1
R1
R2
L1
7µH
Q2
C2
1µF
C3
0.1µF
GND
C1
10µF
CS
DH
C4
220µF
VP
DL
OUT
REF
SHDN
V
VP
V
OUT
VL
MAX1762
MAX1791
10
1µF
Figure 3. Typical Application Circuit for V
OUT
< 1.25V
FB
Q1
R1
R2
L1
7µH
Q2
C2
1µF
C3
0.1µF
GND
C1
10µF
CS
DH
C4
220µF
VP
DL
OUT
REF
SHDN
V
VP
V
OUT
VL
MAX1762
MAX1791
10
1µF
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