MAX1631EAI+T Maxim Integrated Products, MAX1631EAI+T Datasheet - Page 25

• Manufacturer Part Number: MAX1631EAI+T
• Description: IC PS CTRLR FOR NOTEBOOKS 28SSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1631EAI+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