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参数资料
| 型号： | MAX8734AEEI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/33页 |
| 文件大小： | 0K |
| 描述： | IC PWR SUPPLY CONTROLLER 28QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 电源控制器 |
| 输入电压： | 4.5 V ~ 24 V |
| 电流 - 电源： | 25µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-QSOP |
| 供应商设备封装： | 28-QSOP |
| 包装： | 带卷 (TR) |
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High-Efficiency, Quad-Output, Main Power-
Supply Controllers for Notebook Computers
Typical Application Circuits
Table 1. Component Suppliers
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.
Detailed Description
The MAX8732A/MAX8733A/MAX8734A dual-buck,
BiCMOS, switch-mode power-supply controllers gener-
ate logic supply voltages for notebook computers. The
MAX8732A/MAX8733A/MAX8734A are designed pri-
marily for battery-powered applications where high effi-
ciency and low-quiescent supply current are critical.
The MAX8732A is optimized for highest efficiency with a
5V/200kHz SMPS and a 3.3V/300kHz SMPS, while the
MANUFACTURER
Central Semiconductor
Dale-Vishay
Fairchild
International Rectifier
NIEC (Nihon)
Sanyo
Sprague
Sumida
Taiyo Yuden
TDK
PHONE
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
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
V IN 7V TO 24V
5V ALWAYS ON
50 ?
VCC
1 μ F
4.7 μ F
V+
LDO5
ILIM3
V CC
ILIM5
1 μ F
1/2
D1
10 μ F
1/2
0.1 μ F
CMPSH-3A
10 μ F
10 μ F
D1
10 ?
BST5
BST3
10 ?
N1
FDS6612A
DH5
MAX8732A
DH3
N3
FDS6612A
5V
L5
0.1 μ F
LX5
MAX8733A
LX3
0.1 μ F
L3
3.3V
C5
D3
C3
EP10QY03
N2
IRF7811AV
DL5
CS5
DL3
CS3
N4
IRF7811AV
D2
EP10QY03
R CS 5
20m ?
ON
OFF
OUT5
FB5
SHDN
OUT3
FB3
PGOOD
V CC
100k ?
R CS 3
20m ?
V CC
ON5
FREQUENCY-DEPENDENT COMPONENTS
REF
ON3
SKIP
5V/3.3V SMPS
SWITCHING FREQUENCY
L3
L5
C3
MAX8732A
200kHz/300kHz
4.7 μ H
7.6 μ H
470 μ F
MAX8733A
400kHz/500kHz
3.0 μ H
5.6 μ H
220 μ F
GND
REF
0.22 μ F
PRO
LDO3
3.3V ALWAYS ON
4.7 μ F
1M ?
C5
330 μ F
150 μ F
Figure 1. MAX8732A/MAX8733A Typical Application Circuit
14
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