参数资料
型号: MAX1902ETJ
厂商: MAXIM INTEGRATED PRODUCTS INC
元件分类: 稳压器
英文描述: 500kHz Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers
中文描述: 0.2 A DUAL SWITCHING CONTROLLER, 550 kHz SWITCHING FREQ-MAX, QCC32
封装: 5 X 5 MM, 0.80 MM, MO-220WHHD-2, TQFN-32
文件页数: 11/33页
文件大小: 649K
代理商: MAX1902ETJ
M
500kHz Multi-Output, Low-Noise Power-Supply
Controllers for Notebook Computers
______________________________________________________________________________________
11
MAX1901
MAX1904
V+ SHDN
V
L
SECFB
INPUT
ON/OFF
C3
7V TO 24V
REF
SEQ
1
μ
F
2.5V ALWAYS ON
*1A SCHOTTKY DIODE REQUIRED
FOR THE MAX1901 (SEE THE
OUTPUT
OVERVOLTAGE PROTECTION
SECTION).
5V ALWAYS ON
Q1
5V ON/OFF
3.3V ON/OFF
Q4
0.1
μ
F
0.1
μ
F
L2
R2
3.3V OUTPUT
C2
*
4.7
μ
F
0.1
μ
F
4.7
μ
F
0.1
μ
F
10
C4
0.1
μ
F
L1
Q3
C5
0.1
μ
F
DL3
GND
CSH3
CSL3
FB3
RESET
RESET OUTPUT
SKIP
STEER
Q2
R1
5V OUTPUT
C1
DL5
LX5
DH5
BST5
BST3
SYNC
DH3
LX3
PGND
CSL5
CSH5
RUN/ON3
TIME/ON5
FB5
*
Figure 1. Standard 3.3V/5V Application Circuit (MAX1901/MAX1904)
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