ADP1755 Analog Devices, ADP1755 Datasheet - Page 8

• Manufacturer Part Number: ADP1755
• Description: 1.2A Low-Vin, Adjustable-Vout LDO Linear Regulator
• Manufacturer: Analog Devices

ADP1754/ADP1755
Figure 11. Shutdown Current vs. Temperature at Various Input Voltages
Figure 13. Output Voltage vs. Input Voltage (in Dropout), V
0.14
0.12
0.10
0.08
0.06
0.04
0.02
Figure 12. Dropout Voltage vs. Load Current, V
2.60
2.55
2.50
2.45
2.40
2.35
2.30
2.25
2.20
100
90
80
70
60
50
40
30
20
10
0
0
–40
2.3
1
–15
2.4
10
LOAD CURRENT (mA)
INPUT VOLTAGE (V)
TEMPERATURE (°C)
2.5
10
100
1.6V
2.6
35
2.5V
1k
LOAD = 10mA
LOAD = 100mA
LOAD = 400mA
LOAD = 800mA
LOAD = 1.2A
OUT
2.7
60
= 1.6 V, 2.5 V
OUT
1.9V
2.0V
2.4V
2.6V
3.0V
3.6V
= 2.5 V
10k
2.8
85
Rev. B | Page 8 of 20
Figure 14. Ground Current vs. Input Voltage (in Dropout), V
4500
4000
3500
3000
2500
2000
1500
1000
1
2
1
2
500
Figure 15. Load Transient Response, C
Figure 16. Load Transient Response, C
0
CH1
CH1
2.3
1mA TO 1.2A LOAD STEP, 2.5A/µs, 500mA/DIV
500mA Ω
500mA Ω
T
T
1mA TO 1.2A LOAD STEP, 2.5A/µs,
2.4
B
B
W
W
CH2 20mV
CH2 50mV
500mA/DIV
INPUT VOLTAGE (V)
I
I
LOAD
LOAD
2.5
50mV/DIV
20mV/DIV
V
V
OUT
OUT
B
B
W
W
M10µs
T
M10µs
T
2.6
10.20%
IN
IN
10.40%
= 4.7 μF, C
= 22 μF, C
A CH1
A CH1
LOAD = 10mA
LOAD = 100mA
LOAD = 400mA
LOAD = 800mA
LOAD = 1.2A
V
V
V
V
2.7
IN
OUT
IN
OUT
OUT
OUT
= 3.6V
= 3.6V
= 1.5V
= 1.5V
380mA
= 4.7 μF
340mA
= 22 μF
OUT
= 2.5 V
2.8