MAX8556_09 Datasheet, PDF (4/10 Pages) Maxim Integrated Products – 4A Ultra-Low-Input-Voltage LDO Regulators

4A Ultra-Low-Input-Voltage
LDO Regulators
Typical Operating Characteristics (continued)
(V_EN = V_IN = +1.8V, V_OUT = +1.5V, I_OUT = 4A, C_OUT = 20µF, C_IN = 20µF, and T_A = +25°C, unless otherwise noted.)
GND CURRENT vs. TEMPERATURE
900
800
700
I_LOAD = 2A
600
500
400
I_LOAD = 0A
300
200
100
0
-40 -15
10
35
60
85
TEMPERATURE (°C)
DROPOUT VOLTAGE vs. LOAD CURRENT
90
80
70
60
50
40
30
20
10
0
0
V_IN = 1.5V
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
LOAD CURRENT (A)
2.5V
V_IN
1.8V
V_OUT
(AC-COUPLED)
LINE-TRANSIENT RESPONSE
MAX8556 toc06
100µs/div
10mV/div
4A LOAD-TRANSIENT RESPONSE
MAX8556 toc07
2A LOAD-TRANSIENT RESPONSE
MAX8556 toc08
V_OUT
(AC-COUPLED)
50mV/div
V_OUT
(AC-COUPLED)
50mV/div
I_OUT
2A/div
40µs/div
ENABLE WAVEFORMS
MAX8556 toc09
V_EN
2V/div
I_OUT
1A/div
40µs/div
SHORT-CIRCUIT WAVEFORMS
MAX8556 toc10
V_IN
2V/div
3.6V
V_OUT
1V/div
V_OUT
1V/div
100µs/div
I_OUT
5A/div
200µs/div
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