MAX1638EAG+ Maxim Integrated Products, MAX1638EAG+ Datasheet - Page 12

• Manufacturer Part Number: MAX1638EAG+
• Description: IC STEP-DWN CTRLR HI-SPD 24-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1638EAG+

• Applications: Controller, Intel Pentium® II
• Voltage - Input: 4.5 ~ 5.5 V
• Number Of Outputs: 1
• Voltage - Output: 1.3 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SSOP
• Output Voltage: 1.3 V to 5.5 V
• Output Current: 35 A
• Input Voltage: 4.5 V to 5.5 V
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

High-Speed Step-Down Controller with
Synchronous Rectification for CPU Power
12
Figure 5. Buck Regulator with High-Side Current Sensing
AGND
TO
0.1μF
______________________________________________________________________________________
C9
REF
CONNECTION
100k
RC1
C6, 1.0μF
R5
CERAMIC
TO V
NO
CC2
10μF
C7
DD
CC1
PWROK
D0
D1
D2
D3
D4
LG
FREQ
CC2
CC1
REF
V
CC
MAX1638
10Ω
R6
V
PGND
NDRV
AGND
PDRV
DD
CSH
CSL
BST
DH
LX
DL
FB
0.1μF
C12
3.3nF
C5
(OPTIONAL)
(OPTIONAL)
C11
3.3nF
R10
R9
39Ω
39Ω
R7
R8
4.7μF
C8
N1
N2
R1
D2
CMPSH-3
D1
(OPTIONAL)
C4
0.1μF
L1
C1
C2
V
N3
P1
IN
R11
= 5V
LOAD
V
LOCAL
BYPASSING
OUT
TO 3.5V
= 1.3V