MAX15118 Datasheet, PDF (8/23 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.)
SOFT-START WAVEFORMS
(SKIP MODE, ILOAD = 2A)
MAX15118 toc20
VENABLE
2V/div
QUIESCENT CURRENT
(SHUTDOWN)
1.5
V_EN = 0V
1.2
V_OUT
1V/div
0.9
1ms/div
ILX
5A/div
V_PGOOD
2V/div
HICCUP MODE (SHORT ON OUTPUT)
MAX15118 toc22
I_OUT
10A/div
0.6
0.3
0
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOLTAGE (V)
RMS INPUT CURRENT
vs. SUPPLY VOLTAGE
1.5
SHORT CIRCUIT ON OUTPUT
1.2
1ms/div
V_OUT
500mV/div
IIN
2A/div
VIN
200mV/div
AC-COUPLED
0.9
0.6
0.3
0
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOLTAGE (V)
FB VOLTAGE vs. TEMPERATURE
(VOUT = 1.5V)
0.615
NO LOAD
0.610
0.605
VIN = 5V, SKIP MODE
VIN = 3.3V, SKIP MODE
0.600
0.595
0.590
VIN = 3.3V, PWM MODE
VIN = 5V, PWM MODE
0.585
-40 -15
10
35
60
85
TEMPERATURE (°C)
SOFT-START WAVEFORMS WITH
SS/REFIN (NO LOAD, PWM MODE)
MAX15118 toc25
V_SS/REFIN
500mV/div
V_OUT
1V/div
1ms/div
ILX
5A/div
V_PGOOD
2V/div
����������������������������������������������������������������� Maxim Integrated Products   8