MAX1631EAI+T Maxim Integrated Products, MAX1631EAI+T Datasheet - Page 24

• 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
Multi-Output, Low-Noise Power-Supply
Controllers for Notebook Computers
Figure 8. Triple-Output Application for Low-Voltage Batteries (MAX1630/MAX1633)
24
OUTPUT
ON/OFF
______________________________________________________________________________________
+3.3V
(3A)
R1 = R2 = 20mΩ
L2 = 10μH SUMIDA CDRH125-100
T1 = 10μH 1:4 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 MAX1630 ONLY (SEE OUTPUT OVERVOLTAGE PROTECTION
AND OUTPUT UNDERVOLTAGE SHUTDOWN PROTECTION SECTIONS).
TRANSPOWER TECHNOLOGIES TTI-5902
+5.2V TO +24V
C1
INPUT
*
2.7μF
R1
1:4
T1
0.1μF
C3
1N5819
3V ON/OFF
5V ON/OFF
0.1μF
Q1
Q2
10Ω
4.7μF
25
26
24
28
27
5
1
2
3
7
V
BST3
DH3
LX3
DL3
CSH3
CSL3
FB3
RUN/ON3
TIME/ON5
TO +3.3V OUTPUT
DD
0.1μF
SKIP
SHDN
10
23
MAX1630
MAX1633
V+
22
GND
SYNC
8
6
12OUT
RESET
PGND
BST5
CSH5
CSL5
DH5
DL5
SEQ
LX5
FB5
REF
*
VL
21
4
18
16 Q3
17
19
20
14
13
15
9
11
12
*
Q4
0.1μF
1μ F
TO +5V OUTPUT
1N5819
0.1μF
0.1μF
C4
L2
2.2μF
4.7μF
R2
+2.5V REF
POWER-GOOD
*
+5V
ALWAYS ON
+12V
AT 120mA
+5V OUTPUT (3A)
C2