NCP5666DS25R4G datasheet(6/9 Pages) ONSEMI

Part #	NCP5666DS25R4G

Description	3.0 A, Low Dropout Linear Regulator with Enable

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP5666

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TYPICAL CHARACTERISTICS

Figure 7. Disable Current vs. Ambient Temperature

-50

-25

0

25

50

75

100

125

150

TA, AMBIENT TEMPERATURE (°C)

70

60

50

40

30

20

10

0

VEN = 0 V

Vout(nom) = 5.0 V

Figure 8. Disable Current vs. Ambient Temperature

-50

-25

0

25

50

75

100

125

150

TA, AMBIENT TEMPERATURE (°C)

70

60

50

40

30

20

10

0

VEN = 0 V

Vout(nom) = 2.5 V

-50

-25

0

25

50

75

100

125

150

TA, AMBIENT TEMPERATURE (°C)

5.00

Figure 9. Short Circuit Current Limit vs. Ambient

Temperature

4.75

4.50

4.25

4.00

3.75

3.50

3.25

3.00

Figure 10. Output Current vs. Input-Output

Voltage Differential

INPUT-OUTPUT VOLTAGE DIFFERENTIAL (V)

1.2

1.0

0.8

0.6

0.4

0.2

0.0

TA = 25°C

L = 25 mm Copper

20

16

10

2

014

12

46

8

0

10

20

30

40

50

60

70

80

90

0

1.0

10

100

1000

Iout = 1.0 A

Iout = 10 mA

F, FREQUENCY (kHz)

Cin = 100 nF

Cout = 1.0 mF

Figure 11. Ripple Rejection vs. Frequency

0.001

0.01

0.1

1.0

10

Iout, OUTPUT CURRENT (A)

Figure 12. Output Capacitor ESR Stability vs.

Output Current

0.0

1.0

2.0

3.0

Cout = 2.2 mF

Unstable Region

0.5

1.5

2.5

Stable Region

Cout = 22 mF

Cout = 220 mF

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