NCV8705MWADJTCG datasheet(6/23 Pages) ONSEMI

Part #	NCV8705MWADJTCG

Description	LDO Voltage Regulator

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Manufacturer	ONSEMI [ON Semiconductor]

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NCV8705

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6

TYPICAL CHARACTERISTICS

Figure 6. Output Voltage Noise Spectral Density for VOUT = 3.3 V, COUT = 10 mF

FREQUENCY (kHz)

1000

10

1

0.1

0.01

0.001

0.01

0.1

1

10

VIN = 3.8 V

VOUT = 3.3 V

CIN = 1 mF

COUT = 10 mF

MLCC, X7R,

1206 size

IOUT = 10 mA IOUT = 100 mA

IOUT = 500 mA

1 mA

17.35

14.07

100 mA

17.43

14.29

300 mA

16.55

13.33

10 Hz − 100 kHz

100 Hz − 100 kHz

RMS Output Noise (

mV)

IOUT

500 mA

16.48

13.20

100

IOUT = 300 mA

Figure 7. Output Voltage Noise Spectral Density for Adjustable Version – Different Output Voltage

FREQUENCY (kHz)

1000

10

1

0.1

0.01

0.001

0.01

0.1

1

10

VIN = VOUT =+1 V

CIN = 1 mF

COUT = 10 mF

IOUT = 10 mA

VOUT = 3.3 V, R1 = 25k,

R2 = 8.2k

1.5 V

31.40

30.33

3.3 V

49.14

44.30

10 Hz − 100 kHz

100 Hz − 100 kHz

RMS Output Noise (

mV)

VOUT

100

VOUT = 1.5 V, R1 = 15k,

R2 = 13k

Figure 8. Output Voltage Noise Spectral Density for Adjustable Version for Various C1

FREQUENCY (kHz)

1000

10

1

0.1

0.01

0.001

0.01

0.1

1

10

none

50.17

43.85

100 pF

46.90

40.39

1 nF

36.92

27.99

10 Hz − 100 kHz

100 Hz − 100 kHz

RMS Output Noise (

mV)

IOUT

10 nF

27.02

18.31

100

C1 = none

C1 = 100 pF

C1 = 1 nF

C1 = 10 nF

VIN = 4.3 V

VOUT = 3.3 V

R1 = 255k, R2 = 82k

CIN = COUT = 1 mF

IOUT = 10 mA

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