MAX8734 Maxim Integrated Products, MAX8734 Datasheet - Page 14

• Manufacturer Part Number: MAX8734
• Description: (MAX8732 - MAX8734) Main Power-Supply Controllers
• Manufacturer: Maxim Integrated Products

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The typical application circuits (Figures 1 and 2) gener-
ate the 5V/5A and 3.3V/5A main supplies in a notebook
computer. The input supply range is 7V to 24V. Table 1
lists component suppliers.
The MAX8732/MAX8733/MAX8734 dual-buck, BiCMOS,
switch-mode power-supply controllers generate logic
supply voltages for notebook computers. The
MAX8732/MAX8733/MAX8734 are designed primarily
for battery-powered applications where high efficiency
and low-quiescent supply current are critical.
The MAX8732 is optimized for highest efficiency with a
5V/200kHz SMPS and a 3.3V/300kHz SMPS, while the
High-Efficiency, Quad-Output, Main Power-
Supply Controllers for Notebook Computers
Figure 1. MAX8732/MAX8733 Typical Application Circuit
14
______________________________________________________________________________________
SWITCHING FREQUENCY
5V/3.3V SMPS
Typical Application Circuits
C3
C5
L3
L5
FREQUENCY-DEPENDENT COMPONENTS
10µF
C5
5V
200kHz/300kHz
Detailed Description
MAX8732
470µF
330µF
4.7µH
7.6µH
EP10QY03
L5
D3
FDS6612A
V
IN
7V TO 24V
400kHz/500kHz
4.7µF
N1
MAX8733
3.0µH
5.6µH
220µF
150µF
R
20mΩ
ON
CS
4Ω
5
V
OFF
REF
N2
IRF7811AV
CC
1/2
D1
0.1µF
10Ω
0.1µF
0.22µF
V+
BST5
DH5
LX5
DL5
CS5
OUT5
FB5
SHDN
ON5
ON3
GND
REF
LDO5
MAX8732
MAX8733
Table 1. Component Suppliers
Central Semiconductor
Dale-Vishay
Fairchild
International Rectifier
NIEC (Nihon)
Sanyo
Sprague
Sumida
Taiyo Yuden
TDK
ILIM3
MANUFACTURER
LDO3
3.3V ALWAYS ON
V
4.7µF
CC
PGOOD
50Ω
ILIM5
OUT3
BST3
SKIP
DH3
PRO
DL3
CS3
LX3
FB3
CMPSH-3A
10Ω
IRF7811AV
1µF
V
CC
1/2
D1
1µF
N4
0.1µF
100kΩ
1MΩ
516-435-1110
402-564-3131
408-721-2181
310-322-3331
805-843-7500
619-661-6835
603-224-1961
847-956-0666
408-573-4150
847-390-4461
PHONE
N3
FDS6612A
5V ALWAYS ON
R
20mΩ
CS
3
D2
EP10QY03
4.7µF
10µF
L3
FACTORY FAX
516-435-1824
402-563-6418
408-721-1635
310-322-3332
847-843-2798
619-661-1055
603-224-1430
847-956-0702
408-573-4159
847-390-4405
3.3V
10µF
C3