MAX15058 Datasheet, PDF (6/21 Pages) Maxim Integrated Products – High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching Regulator

High-Efficiency, 3A, Current-Mode
Synchronous, Step-Down Switching Regulator
Typical Operating Characteristics (continued)
(VIN = 5V, VOUT = 1.8V, ILOAD = 3A, Circuit of Figure 5, TA = +25NC, unless otherwise noted.)
SOFT-START WAVEFORMS
(PWM MODE) (IOUT = 3A)
MAX15058 toc13a
VENABLE
5V/div
VOUT
1V/div
SOFT-START WAVEFORMS
(SKIP MODE) (IOUT = 3A)
MAX15058 toc13b
VENABLE
5V/div
VOUT
1V/div
ILX
1A/div
VPGOOD
5V/div
ILX
1A/div
VPGOOD
5V/div
200µs/div
200µs/div
SHUTDOWN CURRENT
vs. INPUT VOLTAGE
100
90 ^VEN ^{= 0V}
80
70
60
50
40
30
20
10
0
2.7 3.2 3.7 4.2 4.7 5.2
INPUT VOLTAGE (V)
RMS INPUT CURRENT
vs. INPUT VOLTAGE
200
160
120
80
40
SHORT CIRCUIT ON OUTPUT
0
2.8 3.1 3.4 3.7 4.0 4.3 4.6 4.9 5.2 5.5
INPUT VOLTAGE (V)
SHORT-CIRCUIT HICCUP MODE
MAX15058 toc15
IIN
500mA/div
V_OUT
200mV/div
200µs/div
IOUT
5A/div
FB VOLTAGE vs. TEMPERATURE
606
604
602
600
598
596
594
-40
NO LOAD
-20 0 20 40 60 80
AMBIENT TEMPERATURE (°C)
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