MAX1631AEAI Maxim Integrated Products, MAX1631AEAI Datasheet - Page 26

• Manufacturer Part Number: MAX1631AEAI
• Description: DC/DC Switching Controllers
• Manufacturer: Maxim Integrated Products

Specifications of MAX1631AEAI

• Number Of Outputs: 2
• Output Voltage: 2.5 V to 5.5 V, 3.3 V, 5 V
• Output Current: 1 A
• Input Voltage: 4.2 V to 30 V
• Mounting Style: SMD/SMT
• Package / Case: SSOP-28
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

_____________________________________________________________Application Circuits (continued)
Multi-Output, Low-Noise Power-Supply
Controllers for Notebook Computers
Figure 10. Dual, 4A, Notebook Computer Power Supply
26
2.5V OUTPUT
*
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).
C1
+6V TO +24V
0Ω
OPEN
INPUT
R1
ON/OFF
ON/OFF
C3
0.1μF
L1
1N5819
Q1
4.7μF
10Ω
Q2
0.1μF
0.1μF
18
16
17
19
20
14
13
12
28
1μF
7
8
BST5
DH5
LX5
DL5
CSH5
CSL5
TIME/ON5
RUN/ON3
GND
V+ SHDN
PGND
FB5
REF
22
ON/OFF
9
MAX1631
MAX1634
23
SYNC
SECFB
6
RESET
STEER
5
CSH3
CSL3
BST3
SKIP
DH3
SEQ
FB3
LX3
DL3
*
VL
15
21
25
27
26
24
1
2
3
11
10
4
*
0.1μF
Q4
RESET OUTPUT
Q3
1N5819
0.1μF
4.7μF
5V ALWAYS ON
L2
OPEN
R2
0Ω
+3.3V OUTPUT
C2
*