ADP123 datasheet(9/20 Pages) AD

部品番号	ADP123

部品情報	5.5 V Input, 300 mA, Low Quiescent Current, CMOS Linear Regulator

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メーカー	AD [Analog Devices]

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ADP122/ADP123

Rev. 0 | Page 9 of 20

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10

100

1k

10k

100k

1M

10M

FREQUENCY (Hz)

IOUT = 100µA

VIN = VOUT + 0.5V

VRIPPLE = 50mV

CIN = COUT 1µF

IOUT = 1mA

IOUT = 10mA

IOUT = 100mA

IOUT = 200mA

IOUT = 300mA

Figure 17. Power Supply Rejection Ratio vs. Frequency, VOUT = 4.2 V, VIN = 4.7 V

–100

–90

–80

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1k

10k

100k

1M

10M

FREQUENCY (Hz)

VOUT = 2.8V, IOUT = 1mA

VIN = VOUT + 0.5V

VRIPPLE = 50mV

CIN = COUT 1µF

VOUT = 3.3V, IOUT = 1mA

VOUT = 4.2V, IOUT = 1mA

VOUT = 2.8V, IOUT = 300mA

VOUT = 3.3V, IOUT = 300mA

VOUT = 4.2V, IOUT = 300mA

Figure 18. Power Supply Rejection Ratio vs. Frequency, Various Output

Voltages and Load Currents

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–30

–20

–10

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1k

10k

100k

1M

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FREQUENCY (Hz)

VIN = 3.1V, IOUT = 1mA

VRIPPLE = 50mV

CIN = COUT 1µF

VIN = 3.3V, IOUT = 1mA

VIN = 3.8V, IOUT = 1mA

VIN = 4.8V, IOUT = 1mA

VIN = 3.1V, IOUT = 300mA

VIN = 3.3V, IOUT = 300mA

VIN = 3.8V, IOUT = 300mA

VIN = 4.8V, IOUT = 300mA

Figure 19. Power Supply Rejection Ratio vs. Headroom Voltage (VIN − VOUT)

0

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2

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4

5

10

100

1k

10k

100k

FREQUENCY (Hz)

VOUT = 2.8V

VOUT = 3.3V

VOUT = 4.2V

Figure 20. Output Noise Spectrum

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0.001

0.01

0.1

1

10

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IOUT (mA)

VOUT = 4.2V

VOUT = 3.3V

VOUT = 2.8V

Figure 21 Output Noise vs. Load Current and Output Voltage

CH1 200mA

Ω B

W CH2 50.0mV

B

W M 40.0µs

A CH1

196mA

1

2

T

10.20%

VOUT

VIN = 3.7V

VOUT = 3.3V

1mA TO 300mA LOAD STEP

IOUT

Figure 22. Load Transient Response, COUT = 1 μF

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同様の説明 - ADP123

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Analog Devices	ADP122ACPZ-2.6-R7	611Kb / 24P	5.5 V Input, 300 mA, Low Quiescent Current, CMOS Linear Regulator Rev. E
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	ADP124ACPZ-1.8-R7	632Kb / 20P	5.5 V Input, 500 mA, Low Quiescent Current, CMOS Linear Regulators REV. C
	ADP124	676Kb / 20P	5.5 V Input, 500 mA, Low Quiescent Current, CMOS Linear Regulators REV. 0
	ADP125ACPZ-R7	632Kb / 20P	5.5 V Input, 500 mA, Low Quiescent Current, CMOS Linear Regulators REV. C
	ADP170	538Kb / 20P	300 mA, Low Quiescent Current, CMOS Linear Regulators REV. B
	ADP121-AUJZ12R7	667Kb / 20P	150 mA, Low Quiescent Current, CMOS Linear Regulator Rev. G

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