MAX1639ESE+ Maxim Integrated Products, MAX1639ESE+ Datasheet - Page 8

• Manufacturer Part Number: MAX1639ESE+
• Description: IC STEP-DWN CTRLR HI-SPD 16-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1639ESE+

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1.1 ~ 4.5 V
• Current - Output: 35A
• Frequency - Switching: 300kHz, 600kHz, 1MHz
• Voltage - Input: 4.5 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Power - Output: 696mW
• Output Voltage: 1.1 V to 4.5 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
8
Figure 2. Simplified Block Diagram
_______________________________________________________________________________________
AGND
FREQ
CC1
CC2
V
CC
REF
gm
FB
REF1
40k
OSCILLATOR
MAX1639
10k
24R
11R
COMPENSATION
SLOPE
REF
REF1
REF2
REF
WINDOW
N
PWROK
SET
RESET
REF2
CONTROL AND
DRIVE LOGIC
Q
Q
+
-
CSL
CSH
BST
DH
LX
V
DL
PGND
DD