ADP3308 查看數據表（PDF） - Analog Devices

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ADP3308

anyCAP® 50 mA Low Dropout Linear Regulator

Analog Devices 

3.320

3.310

VOUT = 3.3V

3.300

3.290

3.280

RL = 66⍀

CL = 0.47␮F

VIN

7.5

7.0

0 40 80 120 160 200 240 280 320 360 400

TIME – ␮s

TPC 10. Line Transient Response

3.320

3.310

VOUT = 3.3V

3.300

3.290

3.280

RL = 3.3k⍀

CL = 0.47␮F

VIN

7.5

7.0

0 20 40 60 80 100 120 140 160 180 200

TIME – ␮s

TPC 11. Line Transient Response

3.320

3.310

VOUT = 3.3V

CL = 4.7␮F

3.300

3.290

3.280

100

IOUT

10

0

100 200 300 400 500

TIME – ␮s

TPC 13. Load Transient

3.3

VOUT = 3.3V

VOUT

0

200

150

100

IOUT

50

0

0

1

2

3

4

5

TIME – ␮s

TPC 14. Short Circuit Current

4

3.3V

3

2

1

0

VOUT = 3.3V

RL = 66⍀

CL = 0.47␮F

3

VSD

0

0

20

40

60

80 100

TIME – ␮s

TPC 16. Turn Off

0

–10 a. 0.47␮F, RL = 3.3k⍀

–20

b. 0.47␮F, RL = 66⍀

c. 4.7␮F, RL = 3.3k⍀

–30 d. 4.7␮F, RL = 66⍀

VOUT = +3.3V

b

–40

–50

–60

–70 b d

a

d

c

–80

–90

–100 a c

10 100 1k 10k 100k 1M 10M

FREQUENCY – Hz

TPC 17. Power Supply Ripple

Rejection

ADP3308

3.320

3.310

3.300

VOUT = 3.3V

CL = 0.47␮F

3.290

3.280

IOUT

100

10

0

100 200 300 400 500

TIME – ␮s

TPC 12. Load Transient

4

CL = 0.47␮F

3

2

1

0

+3

0

VOUT

3.3V

CL = 4.7␮F

VOUT = 3.3V

RL = 66⍀

VSD

+3V

0

20

40

60

80

100

TIME – ␮s

TPC 15. Turn On

10

VOUT = 3.3V

CL = 0.47␮F

IL = 1mA

1

0.1

0.01

100

1k

10k

FREQUENCY – Hz

100k

TPC 18. Output Noise Density

REV. B

–5–

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