MAX1951ESA+T Maxim Integrated Products, MAX1951ESA+T Datasheet - Page 12

• Manufacturer Part Number: MAX1951ESA+T
• Description: IC REG PWM 2A 8-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1951ESA+T

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 5.5 V
• Current - Output: 2A
• Frequency - Switching: 1MHz
• Voltage - Input: 2.6 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Power - Output: 976mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1MHz, All-Ceramic, 2.6V to 5.5V Input,
2A PWM Step-Down DC-to-DC Regulators
Figure 2a. MAX1951 Adjustable Output Typical Application Circuit
Figure 2b. MAX1952 Fixed-Output Typical Application Circuit
12
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10μF
2.6V TO 5.5V
C1
10μF
2.6V TO 5.5V
C1
220pF
C2
220pF
C2
ON
0.1μF
C5
OFF
51.1kΩ
ON
R1
0.1μF
10kΩ
OPTIONAL
SHUTDOWN
CONTROL
C5
R5
OFF
68kΩ
10Ω
R1
R4
10kΩ
OPTIONAL
SHUTDOWN
CONTROL
R5
Q1
10Ω
R4
Q1
IN
COMP
V
CC
MAX1951ESA
GND
IN
V
COMP
MAX1952ESA-18
CC
PGND
PGND
VOLTAGE (V)
0.1μF
REF
OUTPUT
LX
FB
C3
GND
0.8
1.5
2.5
3.3
REF
16.9kΩ
FB
LX
1%
2μH
R2
L1
R1 (kΩ)
33.2
51.1
82.5
110
C3
0.1μF
2μH
14.7kΩ
L1
COMPONENT VALUES
1%
R3
R2 (kΩ)
1.5V AT 1.5A
OPEN
16.9
14
24
GND
1.8V AT 1.5A
C4
10μF
R3 (kΩ)
SHORT
14.7
30
75
GND
C4
10μF
C2 (pF)
220
220
220
220