Rainbow Electronics MAX1791 - Manual (Page 10)

MAX1762/MAX1791
High-Efficiency, 10-Pin µMAX, Step-Down
Controllers for Notebooks
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Figure 4. Operation with External Current-Sense Resistor
FB
Q1
R S
L1
10 µH
Q2
C2
1 µF
C3
0.1 µF
GND
C1
10 µF
CS
DH
C4
150 µF
VP
DL OUT
REF
SHDN
V VP
V OUT
VL
MAX1762
MAX1791
10 Ω
1 µF
Table 1. Component Selection for Standard Applications
COMPONENT 1.8V/2.5V/3.3V/5.0V AT 2A 1V AT 2A
Input Voltage Range 5V to 20V 5V to 20V
Inductor (µH) 7 5.2
L1 Inductor
CDRH104-7R0NC
Sumida
CDRH104-5R2NC
Sumida
Q1 MOSFETS
NDS8958A
Fairchild
SI4539ADY
Fairchild
C1 Input Capacitor
TMK432BJ106KM
Taiyo Yuden
TMK432BJ106
Taiyo Yuden
C2 VL Cap
EMK3160J105KL
Taiyo Yuden
LMK316BJ475
Taiyo Yuden
C3 REF Cap
UMK316BI104KH
Taiyo Yuden
UMK316BI104KH
Taiyo Yuden
C4 Output Cap
10TPB220M
Sanyo
6TPB150M
Sanyo