MAX1630 Datasheet, PDF (26/28 Pages) Maxim Integrated Products – Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers

Multi-Output, Low-Noise Power-Supply
Controllers for Notebook Computers
_____________________________________________________________Application Circuits (continued)
2.5V OUTPUT
*
C1
ON/OFF
**
INPUT
+6V TO +24V
R1
C3
0.1µF
L1
10Ω
4.7µF
Q1
0.1µF
22 23 5 21
V+ SHDN SECFB VL
18
BST5
16 _DH5
25
BST3
27
DH3
0.1µF
17 _LX5
LX3 ²⁶
5V ALWAYS ON
4.7µF
0.1µF
Q3
0.1µF
L2
R2
Q2
1N5819
0Ω
OPEN
ON/OFF
ON/OFF
19
MAX1631
DL5 _MAX1634 DL3
24
Q4
20
PGND
14
CSH5
13 _CSL5
CSH3 ¹
CSL3 ²
1N5819
12
FB5
7 _TIME/ON5
28 _RUN/ON3
8 _GND
FB3 ³
11
RESET
10
SKIP
STEER ⁴
REF SYNC SEQ
9 6 15
RESET OUTPUT
OPEN
0Ω
1µF
R1 = R2 = 15mΩ
L1 = L2 = 6.8µH SUMIDA CDRH 127-6R8MC
Q1 = Q4 = Si4410DY or 1RF7413
C1 = C2 = 2X SANYO OS-CON 10 SA220M
C3 = 4X SANYO OS-CON 30SC10M
*VL DIODES AND OUTPUT SCHOTTKY DIODES REQUIRED
FOR THE MAX1631 ONLY (SEE OUTPUT OVERVOLTAGE PROTECTION
AND OUTPUT UNDERVOLTAGE SHUTDOWN PROTECTION SECTIONS).
Figure 10. Dual, 4A, Notebook Computer Power Supply
+3.3V OUTPUT
C2 *
26 ______________________________________________________________________________________