MAX8744ETJ+ Maxim Integrated Products, MAX8744ETJ+ Datasheet - Page 16

• Manufacturer Part Number: MAX8744ETJ+
• Description: IC CNTRLR PWR SUP QUAD 32TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX8744ETJ+

• Applications: Controller, Notebook Computers
• Voltage - Input: 6 ~ 26 V
• Number Of Outputs: 4
• Voltage - Output: 3.3V, 5V, 1 ~ 26 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-TQFN Exposed Pad
• Duty Cycle (max): 99 %
• Output Voltage: 3.315 V, 5.015 V, 2 V to 5.5 V
• Mounting Style: SMD/SMT
• Switching Frequency: 200 KHz, 300 KHz, 500 KHz
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Synchronous Pin: No
• Topology: Boost, Flyback, Forward
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

High-Efficiency, Quad-Output, Main Power-
Supply Controllers for Notebook Computers
Figure 1. Standard Application Circuit
16
______________________________________________________________________________________
3.3V PWM
OUTPUT
C
OUT1
12V LDO
OUTPUT
SECONDARY
OUTPUT
C
4.7μF
3.92kΩ
LDOA
0.22μF
1000pF
5.62kΩ
R2
L1
C1
C3
R1
ON
D
L1
OFF
POWER GROUND
ANALOG GROUND
10kΩ
110kΩ
C
C
0.1μF
R6
680Ω
(300kHz)
IN
BST1
R10
N
REF
R5
H1
N
C
0.22μF
L1
REF
25
26
24
23
29
28
32
31
9
7
2
4
5
6
1
DH3
BST3
LX3
DL3
CSH3
CSL3
FSEL
REF
DRVA
OUTA
FBA
SHDN
ON3
ON5
ONA
MAX8744
MAX8745
SEE TABLE 1 FOR COMPONENT SPECIFICATIONS.
PGOODA
PGOOD3
PGOOD5
PGND
CSH5
LDO5
BST5
CSL5
SKIP
GND
ILIM
DH5
DL5
LX5
FB5
FB3
IN
21
16
15
17
18
19
12
13
11
30
20
10
22
27
14
8
3
N
L2
R7
100kΩ
N
H2
C
0.1μF
BST2
C
4.7μF
LDO5
D
C
R8
100kΩ
L2
IN
5V LDO OUTPUT
R3
10.5kΩ
4.02kΩ
C4
1000pF
0.22μF
R4
C2
T1
R9
100kΩ
D1
CONNECT
TO 5V OR 3.3V
INPUT (V
POWER-GOOD
C
C
4.7μF
IN
AUX
OUT2
)
5V PWM
OUTPUT
SECONDARY
OUTPUT