ADP7112ACBZ-1.8-R7 datasheet(10/21 Pages) AD

10 / 21 page

ADP7112

Data Sheet

Rev. D | Page 10 of 21

3.1

3.3

3.7

3.5

3.9

VIN (V)

100

200

300

400

700

500

600

LOAD = 5mA

LOAD = 10mA

LOAD = 50mA

LOAD = 100mA

LOAD = 150mA

LOAD = 200mA

Figure 22. Ground Current vs. Input Voltage (VIN) in Dropout, VOUT = 3.3 V

–40

–5

125

TEMPERATURE (°C)

300

250

200

150

100

VIN = 2.7V

VIN = 5.0V

VIN = 10V

VIN = 20V

Figure 23. Soft Start (SS) Current vs. Temperature, Multiple Input Voltages,

VOUT = 5 V

110M

100k

10k

100

FREQUENCY (Hz)

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

3.0V

2.0V

1.6V

1.4V

1.2V

1.0V

800mV

700mV

600mV

Figure 24. Power Supply Rejection Ratio (PSRR) vs. Frequency, VOUT = 1.8 V,

for Various Headroom Voltages

0.2

3.0

2.6

2.2

1.8

1.4

1.0

0.6

HEADROOM VOLTAGE (V)

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

10Hz

100Hz

1kHz

10kHz

100kHz

1MHz

10MHz

Figure 25. Power Supply Rejection Ratio (PSRR) vs. Headroom Voltage,

VOUT = 1.8 V, for Different Frequencies

10M

100k

10k

100

FREQUENCY (Hz)

–120

–100

–80

–60

–40

–20

3.0V

2.0V

1.6V

1.4V

1.2V

1.0V

800mV

700mV

600mV

500mV

Figure 26. Power Supply Rejection Ratio (PSRR) vs. Frequency, VOUT = 3.3 V,

for Various Headroom Voltages

0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0

HEADROOM VOLTAGE (V)

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

10Hz

100Hz

1kHz

10kHz

100kHz

1MHz

10MHz

Figure 27. Power Supply Rejection Ratio (PSRR) vs. Headroom Voltage,

VOUT = 3.3 V, for Different Frequencies

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