MAX1951ESA+ Maxim Integrated Products, MAX1951ESA+ Datasheet - Page 6

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

Specifications of MAX1951ESA+

• 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
• Output Voltage: 0.8 V
• Output Current: 2 A
• Input Voltage: 2.6 V to 5.5 V
• Supply Current: 6 mA
• Switching Frequency: 1 MHz
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• 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
(Typical values are at V
6
_______________________________________________________________________________________
0A
0V
IN
SOFT-START WAVEFORMS
SWITCHING WAVEFORMS
= V
CC
200ns/div
= 5V, V
1ms/div
OUT
V
V
IN
OUT
V
V
I
LOAD
= V
IN
OUT
= 0.8V
= 1.5V, I
MAX1951 toc08
= 3.3V
CC
= 1.8V
= 1.5A
MAX1951 toc10
= 3.3V
Typical Operating Characteristics (continued)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
2.5
INDUCTOR CURRENT
1A/div
V
5V/div
OUTPUT VOLTAGE
10mV/div,
AC-COUPLED
OUT
LX
V
2V/div
OUTPUT VOLTAGE
0.5V/div
COMP
3.0
= 1.5A, and T
SHUTDOWN CURRENT
vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
3.5
4.0
A
4.5
= +25°C, unless otherwise noted. See Figure 2.)
0V
0V
0V
5.0
5.5
SOFT-START WAVEFORMS
SHUTDOWN WAVEFORMS
1ms/div
20μs/div
V
V
I
LOAD
IN
OUT
V
V
I
LOAD
IN
OUT
= V
= 2.5V
= V
= 1.5A
CC
= 2.5V
= 1.5A
MAX1951 toc09
CC
= 3.3V
MAX1951 toc11
= 3.3V
OUTPUT VOLTAGE
1V/div
V
2V/div
COMP
V
2V/div
V
5V/div
OUTPUT VOLTAGE
1V/div
COMP
LX