ADM7170 View Datasheet(PDF) - Analog Devices

Part Name

Description

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ADM7170

6.5 V, 500 mA, Ultralow Noise, High PSRR, Fast Transient Response CMOS LDO

Analog Devices 

ADM7170

100k

10k

ILOAD = 1mA

ILOAD = 10mA

ILOAD = 100mA

ILOAD = 500mA

1k

100

10

1

1

10

100

1k

10k 100k

1M

10M

FREQUENCY (Hz)

Figure 46. Output Noise Spectral Density, VOUT = 5 V

100k

10k

5.0V

3.0V

1.2V

1k

100

10

1

1

10

100

1k

10k 100k

1M

10M

FREQUENCY (Hz)

Figure 47. Output Noise Spectral Density, Different Output Voltages,

Load Current = 100 mA

T

1

2

CH1 200mA ΩBW CH2 10mV BW M2.0µs A CH1 160mA

T 9.8%

Figure 48. Load Transient Response, ILOAD = 10 mA to 510 mA,

VOUT = 5 V, VIN = 5.5 V, CH1 = ILOAD, CH2 = VOUT

T

1

2

Data Sheet

CH1 500mA ΩBW CH2 20mV BW M2.0µs A CH1 40mA

T 10.4%

Figure 49. Load Transient Response, ILOAD = 10 mA to 110 mA,

VOUT = 5 V, VIN = 5.5 V, CH1 = ILOAD, CH2 = VOUT

T

1

2

CH1 200mA ΩBW CH2 10mV BW M4.0µs A CH1 124mA

T 10.6%

Figure 50. Load Transient Response, ILOAD = 10 mA to 510 mA,

Adjustable Version, VOUT = 1.2 V, VIN = 2.5 V, CH1 = ILOAD, CH2 = VOUT

T

1

2

CH1 50mA ΩBW CH2 20mV BW M2.0µs A CH1 63mA

T 10.6%

Figure 51. Load Transient Response, ILOAD = 10 mA to 110 mA,

Adjustable Version, VOUT = 1.2 V, VIN = 2.5 V, CH1 = ILOAD, CH2 = VOUT

Rev. C | Page 14 of 23

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