Datasheet

MAX1960/MAX1961/MAX1962
2.35V to 5.5V, 0.5% Accurate, 1MHz PWM
Step-Down Controllers with Voltage Margining
6 _______________________________________________________________________________________
Typical Operating Characteristics
(Circuit of Figure 9, T
A
= +25°C, unless otherwise noted.)
EFFICIENCY vs. LOAD CURRENT WITH
15A 1MHz CIRCUIT, 3.3V INPUT
MAX1960 toc01
LOAD CURRENT (A)
EFFICIENCY (%)
101
60
70
80
90
100
50
0.1 100
V
OUT
= 2.5V
V
OUT
= 1.8V
V
OUT
= 1.5V
EFFICIENCY vs. LOAD CURRENT WITH
15A 1MHz CIRCUIT, 5V INPUT
MAX1960 toc02
LOAD CURRENT (A)
EFFICIENCY (%)
101
60
70
80
90
100
50
0.1 100
V
OUT
= 3.3V
V
OUT
= 2.5V
V
OUT
= 1.5V
V
OUT
= 1.8V
EFFICIENCY vs. LOAD CURRENT WITH
15A 500kHz CIRCUIT, 3.3V INPUT
MAX1960 toc03
LOAD CURRENT (A)
EFFICIENCY (%)
101
60
70
80
90
100
50
0.1 100
V
OUT
= 2.5V
V
OUT
= 1.5V
V
OUT
= 1.8V
EFFICIENCY vs. LOAD CURRENT WITH
15A 500kHz CIRCUIT, 5V INPUT
MAX1960 toc04
LOAD CURRENT (A)
EFFICIENCY (%)
101
60
70
80
90
100
50
0.1 100
V
OUT
= 3.3V
V
OUT
= 2.5V
V
OUT
= 1.5V
V
OUT
= 1.8V
OUTPUT VOLTAGE
vs. INPUT VOLTAGE, 1MHz
MAX1960 toc05
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
5.14.74.33.93.53.1
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
2.7 5.5
3.3V OUTPUT
2.5V OUTPUT
1.8V OUTPUT
1.5V OUTPUT
1.2V OUTPUT
15A LOAD
DROPOUT
OUTPUT VOLTAGE
vs. INPUT VOLTAGE, 500kHz
MAX1960 toc06
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
5.14.74.33.93.53.1
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
2.7 5.5
3.3V OUTPUT
2.5V OUTPUT
1.8V OUTPUT
1.5V OUTPUT
1.2V OUTPUT
15A LOAD
DROPOUT
FB REGULATION VOLTAGE
vs. LOAD CURRENT
MAX1960 toc07
LOAD CURRENT (A)
FB VOLTAGE (V)
15105
0.798
0.799
0.800
0.801
0.802
0.803
0.797
020
FREQUENCY
vs. INPUT VOLTAGE
MAX1960 toc08
INPUT VOLTAGE (V)
FREQUENCY (kHz)
5.04.53.5 4.0
500
600
700
800
1000
900
1100
1200
400
3.0 5.5
FSET/SYNC = V
CC
FSET/SYNC = GND