MAX1631AEAI+T Maxim Integrated Products, MAX1631AEAI+T Datasheet - Page 25
![IC PWR-SUPP CTRLR NOTEBK 28-SSOP](/photos/6/61/66141/175-28-ssop_sml.jpg)
MAX1631AEAI+T
Manufacturer Part Number
MAX1631AEAI+T
Description
IC PWR-SUPP CTRLR NOTEBK 28-SSOP
Manufacturer
Maxim Integrated Products
Type
Step-Down (Buck)r
Datasheet
1.MAX1634CAI.pdf
(29 pages)
Specifications of MAX1631AEAI+T
Internal Switch(s)
No
Synchronous Rectifier
Yes
Number Of Outputs
2
Voltage - Output
3.3V, 5V, Adj
Current - Output
4A
Frequency - Switching
200kHz, 300kHz
Voltage - Input
4.2 ~ 30 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
28-SSOP
Power - Output
762mW
Output Voltage
2.5 V to 5.5 V, 3.3 V, 5 V
Input Voltage
4.2 V to 30 V
Mounting Style
SMD/SMT
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
_____________________________________________________________Application Circuits (continued)
Figure 9. Triple-Output Application for High-Voltage Batteries (MAX1632/MAX1635)
ON/OFF
+3.3V OUTPUT (3A)
C1
R1 = R2 = 20mΩ
L1 = 10μH SUMIDA CDRH125-100
T2 = 10μH 1:2.2 TRANSFORMER
Q1–Q4 = Si4410DY or IRF7413
C1 = 3 x 220μF 10V SPRAGUE 594D227X0010D2T
C2 = 2 x 220μF 10V SPRAGUE 594D227X0010D2T
C3 = C4 = 2 x 10μF 30V SANYO OS-CON 30SC10M
*VL DIODES AND OUTPUT SCHOTTKY DIODES REQUIRED
FOR THE MAX1632 ONLY (SEE OUTPUT OVERVOLTAGE PROTECTION
AND OUTPUT UNDERVOLTAGE SHUTDOWN PROTECTION SECTIONS).
+6.5V TO +28V
TRANSPOWER TECHNOLOGIES TTI-5870
INPUT
*
______________________________________________________________________________________
R1
Multi-Output, Low-Noise Power-Supply
L1
Controllers for Notebook Computers
0.1μF
C3
1N5819
3V ON/OFF
5V ON/OFF
0.1μF
D1
Q1
Q2
10Ω
4.7μF
25
26
24
28
27
1
2
3
7
BST3
DH3
LX3
DL3
CSH3
CSL3
FB3
RUN/ON3
TIME/ON5
TO +3.3V OUTPUT
0.1μF
SKIP
SHDN
10
MAX1632
MAX1635
23
V+
GND
22
SYNC
8
12OUT
RESET
6
PGND
BST5
CSH5
CSL5
DH5
SEQ
V
DL5
LX5
FB5
REF
VL
*
DD
21
4
5
18
16 Q3
17
19
20
14
13
15
9
11
12
*
Q4
0.1μF
D2
1μ F
TO +5V OUTPUT
1N5819
0.1μF
C4
0.1μF
D5
1:2.2
T2
4.7μF
2.2μF
+2.5V REF
POWER-GOOD
R2
+5V ALWAYS ON
+12V AT 120mA
2.2μF
+5V OUTPUT (3A)
*
C2
25