MAX15053_1107 Datasheet, PDF (5/21 Pages) Maxim Integrated Products – High-Efficiency, 2A, Current-Mode Synchronous, Step-Down Switching Regulator

High-Efficiency, 2A, Current-Mode
Synchronous, Step-Down Switching Regulator
Typical Operating Characteristics (continued)
(VIN = 5V, VOUT = 1.8V, ILOAD = 2A, Circuit of Figure 5, TA = +25NC, unless otherwise noted.)
LOAD-TRANSIENT RESPONSE
MAX15053 toc08
VOUT
100mV/div
AC-COUPLED
I_OUT
1A/div
0A
PWM MODE
40µs/div
SWITCHING WAVEFORMS
(IOUT = 2A)
MAX15053 toc9a
VOUT
50mV/div
AC-COUPLED
I_LX
1A/div
400ns/div
VIN = 5V
0A
VLX
5V/div
SWITCHING WAVEFORMS
MAX15053 toc09b
VOUT
50mV/div
AC-COUPLED
ILX
1A/div
400ns/div
VIN = 3.3V
0A
VLX
5V/div
SWITCHING WAVEFORM IN SKIP MODE
(IOUT = 10mA)
MAX15053 toc10
10µs/div
VOUT
50mV/div
AC-COUPLED
I_LX
1A/div
VLX
5V/div
INPUT AND OUTPUT RIPPLE VOLTAGE
WAVEFORM (IOUT = 2A)
MAX15053 toc11
INPUT
20mV/div
AC-COUPLED
OUTPUT
100mV/div
AC-COUPLED
400ns/div
SHUTDOWN WAVEFORM
MAX15053 toc12
V_ENABLE
5V/div
VOUT
1V/div
I_LX
1A/div
VPGOOD
5V/div
10µs/div
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