MAX15112 Datasheet, PDF (5/23 Pages) Maxim Integrated Products – High-Efficiency, 12A, Current-Mode Synchronous Step-Down Regulator with Integrated Switches

MAX15112
High-Efficiency, 12A, Current-Mode Synchronous
Step-Down Regulator with Integrated Switches
Typical Operating Characteristics (continued)
(V_IN = 5V, V_OUT = 1.5V, I_LOAD = 4A, C_SS = 33nF, see the Typical Operating Circuits, T_A = +25°C, unless otherwise noted.)
EFFICIENCY vs. LOAD CURRENT
(V_IN = 5V, SKIP MODE)
100
95 VOUT = 2.5V
VOUT = 3.3V
90
85
80
VOUT = 1.8V
VOUT = 1.5V
75
70
65
60
55
50
0.1
1
10
100
LOAD CURRENT (A)
SWITCHING FREQUENCY
vs. INPUT VOLTAGE (PWM, IOUT = 0A)
1100
1080
TA = +85°C
1060
1040
1020
TA = +25°C
1000
980
960
940
TA = -40°C
920
900
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
OUTPUT VOLTAGE
vs. INPUT VOLTAGE (PWM)
1.508
1.506
OUTPUT VOLTAGE ERROR
vs. INPUT VOLTAGE (PWM, IOUT = 6A)
0.20
REFERENCED TO VIN = 4V
0.15
1.504
1.502
1.500
IOUT = 0A
I_OUT = 6A
0.10
0.05
0
VOUT = 1.2V
1.498
-0.05
1.496
1.494
I_OUT = 12A
-0.10
V_OUT = 1.8V
-0.15
1.492
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
-0.20
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
OUTPUT VOLTAGE
vs. LOAD CURRENT (PWM, VOUT = 1.5V)
1.510
1.508
1.506
1.504
1.502
1.500
VIN = 5V
VIN = 3.3V
1.498
1.496
1.494
1.492
1.490
0
2
4
6
8 10 12
LOAD CURRENT (A)
LOAD-TRANSIENT RESPONSE
(VIN = 5V, PWM, 1A /µs)
MAX15112 toc09
VOUT
20mV/div
AC-COUPLED
6A
IOUT
2A /div
0.1A
40µs/div
����������������������������������������������������������������� Maxim Integrated Products   5