MAX1999EEI+T Maxim Integrated Products, MAX1999EEI+T Datasheet - Page 15

• Manufacturer Part Number: MAX1999EEI+T
• Description: IC CNTRLR PS QUAD HI EFF 28QSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1999EEI+T

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 4
• Voltage - Output: 3.3V, 5V, 2 ~ 5.5 V
• Current - Output: 10A
• Frequency - Switching: 200kHz, 300kHz, 400kHz, 550kHz
• Voltage - Input: 6 ~ 24 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-QSOP
• Power - Output: 860mW
• Output Voltage: 3.3 V, 2 V to 5.5 V
• Input Voltage: 6 V to 24 V
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 2. MAX1999 Typical Application Circuit
10µF
C5
5V
*OPTIONAL CAPACITANCE BETWEEN
LX AND PGND (CLOSE TO THE IC) ONLY
REQUIRED FOR ULTRASONIC MODE
Supply Controllers for Notebook Computers
High-Efficiency, Quad Output, Main Power-
EP10QY03
L5
______________________________________________________________________________________
FDS6612A
D3
V
IN
7V TO 24V
4.7µF
N1
ON
4Ω
V
REF
OFF
N2
IRF7811AV
CC
1/2
D1
0.1µF
470pF*
SWITCHING FREQUENCY
10Ω
5V/3.3V SMPS
0.1µF
0.22µF
C3
C5
L3
L5
FREQUENCY-DEPENDENT COMPONENTS
V+
BST5
DH5
LX5
DL5
OUT5
FB5
SHDN
ON5
ON3
GND
REF
LDO5
MAX1999
200kHz/300kHz
ILIM3
TON = V
470µF
330µF
4.7µH
7.6µH
LDO3
CC
3.3V ALWAYS ON
V
4.7µF
CC
PGOOD
50Ω
ILIM5
OUT3
BST3
SKIP
DH3
TON
PRO
DL3
LX3
FB3
400kHz/500kHz
TON = GND
220µF
150µF
3.0µH
5.6µH
SEE
TABLE
CMPSH-3A
10Ω
0.1µF
IRF7811AV
1µF
V
CC
1/2
D1
N4
470pF*
100kΩ
1MΩ
1µF
N3
FDS6612A
5V ALWAYS ON
D2
EP10QY03
4.7µF
10µF
L3
3.3V
10µF
C3
15