TPS72201DBVT datasheet(5/11 Pages) TI

5 / 11 page

TPS72201, TPS72215

TPS72216, TPS72218

SLVS390B – DECEMBER 2001 – REVISED MAY 2002

www.ti.com

TYPICAL CHARACTERISTICS

Figure 1

1.7996

1.7997

1.7998

1.7999

1.8000

1.8001

1.8002

10203040

IO – Output Current – mA

TPS72218

OUTPUT VOLTAGE

OUTPUT CURRENT

VI = 2.8 V

Co = 1 µF

TJ = 25° C

Figure 2

1.7900

1.7920

1.7940

1.7960

1.7980

1.8000

1.8020

–40 –25 –10 5

20 35 50 65 80 95 110 125

TJ – Junction Temperature – °C

TPS72218

OUTPUT VOLTAGE

JUNCTION TEMPERATURE

IO = 50 mA

IO = 1 mA

VI = 2.8 V

Co = 1 µF

Figure 3

–40 –25 –10 5

20 35 50 65 80 95 110 125

TJ – Junction Temperature – °C

TPS72218

GROUND CURRENT

JUNCTION TEMPERATURE

VI = 2.8 V

Co = 1 µF

IO = 10 mA

IO = 50 mA

100

150

200

250

300

Figure 4

100

150

200

250

300

IO – Output Current – mA

TPS72218

GROUND CURRENT

OUTPUT CURRENT

TJ = 25° C

TJ = 125° C

TJ = –40° C

VI = 2.8 V

Co = 1 µF

Figure 5

TPS72218

OUTPUT SPECTRAL NOISE DENSITY

FREQUENCY

0.5

1.5

2.5

100

1 k

10 k

100 k

f – Frequency – Hz

IO = 50 mA

VI = 2.8 V

Co = 1 µF

Figure 6

f – Frequency – Hz

IO = 1 mA

VI = 2.8 V

Co = 1 µF

IO = 50 mA

TPS72218

OUTPUT IMPEDANCE

FREQUENCY

0.1

0.01

100

1 k

10 k

100 k 1 M

10 M

0.001

100

1 k

Figure 7

–40 –25 –10 5

20 35 50 65 80 95 110 125

IO = 50 mA

IO = 10 mA

VI = 2.8 V

Co = 1 µF

TJ – Junction Temperature – °C

TPS72218

DROPOUT VOLTAGE

JUNCTION TEMPERATURE

Figure 8

100

1 k

10 k

100 k 1 M

f – Frequency – Hz

TPS72118

POWER SUPPLY RIPPLE REJECTION

FREQUENCY

VI = 2.8 V

Co = 1 µF

IO = 50 mA

Figure 9

TPS72218

OUTPUT VOLTAGE, ENABLE VOLTAGE

TIME (START-UP)

t – Time –

µs

150

100

200 200

350

300

400 450 500

VI = 2.8 V

VO = 1.8 V

IO = 50 mA

Co = 1 µF

VEN

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