MAX1951ESA+TW Maxim Integrated Products, MAX1951ESA+TW Datasheet - Page 5

• Manufacturer Part Number: MAX1951ESA+TW
• Description: DC/DC Switching Regulators 1MHz 2A 2.6-5.5V PWM DC/DC Step-Down
• Manufacturer: Maxim Integrated Products

Specifications of MAX1951ESA+TW

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

(Typical values are at V
100
90
80
70
60
50
40
30
20
10
0
10
V
OUT
EFFICIENCY vs. LOAD CURRENT
= 3.3V
V
OUT
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
LOAD CURRENT (mA)
0A
(V
100
= 0.8V
CC
V
2.6
2A PWM Step-Down DC-to-DC Regulators
OUT
_______________________________________________________________________________________
V
= V
OUT
= 1.5V
IN
T
IN
A
LOAD-TRANSIENT RESPONSE
= 2.5V
3.1
= -40°C
= V
= 5V)
SWITCHING FREQUENCY
1MHz, All-Ceramic, 2.6V to 5.5V Input,
T
1000
A
vs. INPUT VOLTAGE
CC
= +85°C
INPUT VOLTAGE (V)
3.6
= 5V, V
40μs/div
4.1
10,000
OUT
4.6
T
A
= +25°C
= 1.5V, I
MAX1951 toc06
5.1
100
90
80
70
60
50
40
30
20
10
0
10
5.6
OUT
V
OUTPUT VOLTAGE:
100mV/div,
AC-COUPLED
OUTPUT CURRENT:
0.5A/div
V
V
I
OUT
OUT
IN
OUT
EFFICIENCY vs. LOAD CURRENT
= 5V
= 1.5A, and T
= 2.5V
= 0.5 TO 1A
V
= 2.5V
OUT
= 0.8V
(V
LOAD CURRENT (mA)
V
100
CC
OUT
= V
V
= 1.5V
OUT
IN
= 1.8V
Typical Operating Characteristics
= 3.3V)
A
= +25°C, unless otherwise noted. See Figure 2.)
1000
0A
-1
-2
-3
-4
-5
-6
6
5
4
3
2
1
0
0
V
10,000
OUT
OUTPUT VOLTAGE DEVIATION
LOAD-TRANSIENT RESPONSE
= 0.8V
0.4
V
vs. LOAD CURRENT
OUT
LOAD CURRENT (A)
= 2.5V
1.995
1.994
1.993
1.992
1.991
1.990
1.989
40μs/div
0.8
V
0
OUT
= 1.8V
T
V
5
A
OUT
vs. REF OUTPUT CURRENT
= -40°C
1.2
T
A
REF OUTPUT CURRENT (μA)
= 3.3V
10
= +85°C
MAX1951 toc07
REF VOLTAGE
15
1.6
20
OUTPUT VOLTAGE:
100mV/div,
AC-COUPLED
OUTPUT CURRENT:
0.5A/div
V
V
I
OUT
IN
OUT
= 3.3V
= 0.5 TO 1A
= 1.5V
25
T
A
= +25°C
30
35
40
5