ADM7171ACPZ-R7 Просмотр технического описания (PDF) - Analog Devices

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Компоненты Описание

производитель

ADM7171ACPZ-R7

6.5 V, 1 A, Ultralow Noise, High PSRR, Fast Transient Response CMOS LDO

Analog Devices 

Data Sheet

4.5

ILOAD = 100µA

4.0

ILOAD = 10mA

ILOAD = 100mA

3.5

ILOAD = 500mA

ILOAD = 1000mA

3.0

2.5

2.0

1.5

1.0

0.5

0

2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5

VIN (V)

Figure 28. Ground Current vs. Input Voltage (VIN), Adjustable Version,

VOUT = 1.2 V

1.2

VIN = 3.0V

VIN = 4.0V

VIN = 5.0V

VIN = 6.0V

1.1

VIN = 6.5V

1.0

0.9

0.8

–40

–5

25

85

125

TEMPERATURE (°C)

Figure 29. Soft Start Current vs. Temperature, Different Input Voltages,

VOUT = 5 V

0

–20

–40

–60

–80

–100

1

800mV

700mV

600mV

500mV

400mV

300mV

200mV

160mV

100mV

10

100

1k

10k 100k

1M

10M

FREQUENCY (Hz)

Figure 30. Power Supply Rejection Ratio (PSRR) vs. Frequency, VOUT = 3 V,

1 A Load Current, Various Headroom Voltages

ADM7171

0

–20

–40

–60

10Hz

100Hz

1kHz

–80

10kHz

100kHz

1MHz

–100

10MHz

0

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

HEADROOM (V)

Figure 31. Power Supply Rejection Ratio (PSRR) vs. Headroom, VOUT = 3 V,

1 A Load Current, Different Frequencies

0

ILOAD = 100mA

ILOAD = 200mA

ILOAD = 500mA

–20

ILOAD = 1A

–40

–60

–80

–100

1

10

100

1k

10k 100k

1M

10M

FREQUENCY (Hz)

Figure 32. Power Supply Rejection Ratio (PSRR) vs. Frequency, 800 mV

Headroom, VOUT = 3 V

0

ILOAD = 100mA

ILOAD = 200mA

ILOAD = 500mA

–20

ILOAD = 1A

–40

–60

–80

–100

1

10

100

1k

10k 100k

1M

10M

FREQUENCY (Hz)

Figure 33. Power Supply Rejection Ratio (PSRR) vs. Frequency, 400 mV

Headroom, VOUT = 3 V

Rev. A | Page 11 of 23

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