NCP161BMX280TBG datasheet(9/19 Pages) ONSEMI

Part #	NCP161BMX280TBG

Description	450 mA, Ultra-Low Noise and High PSRR LDO Regulator

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP161

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TYPICAL CHARACTERISTICS

Figure 31. Power Supply Rejection Ratio,

VOUT = 1.8 V

Figure 32. Power Supply Rejection Ratio,

VOUT = 3.3 V

FREQUENCY (kHz)

10k

1k

100

10

1

0.1

0.01

0

20

40

60

80

100

120

10k

1k

100

10

1

0.1

0.01

0

20

40

60

80

100

120

Figure 33. Power Supply Rejection Ratio,

VOUT = 5.14 V

Figure 34. Stability vs. ESR

FREQUENCY (kHz)

IOUT, OUTPUT CURRENT (mA)

10k

1k

100

10

1

0.1

0.01

0

10

30

40

50

70

80

300

250

200

150

100

50

0

0.1

1

10

100

Figure 35. Enable Turn−on Response −

COUT = 1 mF, IOUT = 10 mA

Figure 36. Enable Turn−on Response −

COUT = 1 mF, IOUT = 250 mA

100

ms/div

100

ms/div

VIN = 2.5 V

VOUT = 1.8 V

COUT = 1 mF

IOUT = 10 mA

IOUT = 250 mA

IOUT = 20 mA

IOUT = 100 mA

VIN = 3.6 V

VOUT = 3.3 V

COUT = 1 mF

IOUT = 10 mA

IOUT = 250 mA

IOUT = 100 mA

IOUT = 20 mA

VIN = 5.5 V

VOUT = 5.14 V

COUT = 1 mF

IOUT = 20 mA

IOUT = 250 mA

IOUT = 10 mA

IOUT = 100 mA

20

60

90

Unstable Operation

Stable Operation

VIN = 2.8 V, VOUT = 1.8 V

CIN = 1 mF (MLCC)

COUT = 1 mF (MLCC)

VEN

IINPUT

VOUT

VIN = 2.8 V, VOUT = 1.8 V

CIN = 1 mF (MLCC)

COUT = 1 mF (MLCC)

VEN

IINPUT

VOUT

IOUT = 450 mA

500

450

400

350

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NCP161BMX280TBG Datasheet(PDF) 9 Page - ON Semiconductor

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