MAX15118 Datasheet, PDF (5/23 Pages) Maxim Integrated Products – High-Efficiency, 18A, Current-Mode Synchronous Step-Down Regulator with Integrated Switches

MAX15118
High-Efficiency, 18A, Current-Mode Synchronous
Step-Down Regulator with Integrated Switches
Typical Operating Characteristics (continued)
(V_IN = 5V, V_OUT = 1.5V, C_SS = 0.1µF, see the Typical Operating Circuits, T_A = +25°C, unless otherwise noted.)
EFFICIENCY vs. OUTPUT CURRENT
(VIN = 3.3V, SKIP MODE)
100
VOUT = 2.5V
95
SWITCHING FREQUENCY
vs. INPUT VOLTAGE
1100
TA = +85°C
90
85
80
75
V_OUT = 1.8V
VOUT = 1.5V
70
VOUT = 1.2V
65
60 ^{VOUT = 0.8V}
1050
T_A = +25°C
1000
TA = -40°C
950
55
50
0 2 4 6 8 10 12 14 16 18
OUTPUT CURRENT (A)
900
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
INPUT VOLTAGE (V)
OUTPUT VOLTAGE vs. SUPPLY VOLTAGE
(PWM MODE, V_OUT = 1.5V)
1.520
OUTPUT VOLTAGE vs. SUPPLY VOLTAGE
(SKIP MODE, VOUT = 1.5V)
1.53
1.515
1.510
1.505
1.52
1.51
NO LOAD
1.500
1.50
1.495
1.490
1.485
ILOAD = 10A
ILOAD = 18A
1.49
ILOAD = 10A ^{ILOAD = 2A}
1.48
1.480
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOLTAGE (V)
1.47
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE ERROR
vs. SUPPLY VOLTAGE
0.50
0.40 ^{NORMALIZED AT VIN = 3.5V}
0.30
0.20
0.10 ^{VOUT = 1.2V}
0
-0.10
-0.20
-0.30
VOUT = 1.5V
-0.40 _{VOUT = 1.8V}
-0.50
2.90
3.55
4.20
ILOAD = 18A
4.85
5.50
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE vs. OUTPUT CURRENT
(PWM MODE, VOUT = 1.5V)
1.53
1.52
VIN = 5V
1.51
1.50
1.49
VIN = 3.3V
1.48
1.47
0 2 4 6 8 10 12 14 16 18
OUTPUT CURRENT (A)
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