Datasheet

High-Efficiency, 3A, Current-Mode
Synchronous, Step-Down Switching Regulator
MAX15058
6 ______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
IN
= 5V, V
OUT
= 1.8V, I
LOAD
= 3A, Circuit of Figure 5, T
A
= +25NC, unless otherwise noted.)
FB VOLTAGE vs. TEMPERATURE
MAX15058 toc17
AMBIENT TEMPERATURE (°C)
FEEDBACK VOLTAGE (V)
806040200-20
596
598
600
602
604
606
594
-40
NO LOAD
RMS INPUT CURRENT
vs. INPUT VOLTAGE
MAX15058 toc16
INPUT VOLTAGE (V)
RMS INPUT CURRENT (mA)
5.24.94.64.34.03.73.43.1
40
80
120
160
200
0
2.8 5.5
SHORT CIRCUIT ON OUTPUT
SHORT-CIRCUIT HICCUP MODE
MAX15058 toc15
I
IN
500mA/div
V
OUT
200mV/div
I
OUT
5A/div
200µs/div
SHUTDOWN CURRENT
vs. INPUT VOLTAGE
MAX15058 toc14
INPUT VOLTAGE (V)
SHUTDOWN CURRENT (nA)
5.24.74.23.73.2
10
20
30
40
50
60
70
80
90
100
0
2.7
V
EN
= 0V
SOFT-START WAVEFORMS
(SKIP MODE) (I
OUT
= 3A)
MAX15058 toc13b
V
ENABLE
5V/div
V
OUT
1V/div
I
LX
1A/div
V
PGOOD
5V/div
200µs/div
SOFT-START WAVEFORMS
(PWM MODE) (I
OUT
= 3A)
MAX15058 toc13a
V
ENABLE
5V/div
V
OUT
1V/div
I
LX
1A/div
V
PGOOD
5V/div
200µs/div