TPS79928 datasheet(6/18 Pages) TI

Part #	TPS79928

Description	200mA Low Quiescent Current, Ultra-Low Noise, High PSRR, Low Dropout Linear Regulator

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TYPICAL CHARACTERISTICS

2.5

3.5

4.5

5.5

6.5

V

IN (V)

1.0

0.8

0.6

0.4

0.2

0

−0.2

−0.4

−0.6

−0.8

−1.0

7.5

I

OUT = 100mA

TJ = +125°C

TJ = +85°C

TJ = −40°C

TJ = +25°C

0

50

100

150

200

I

OUT (mA)

28.50

21.38

14.25

7.13

0

−7.13

−14.25

−21.38

−28.50

TJ = +125°C

TJ = +85°C

TJ = −40°C

TJ = +25°C

200

180

160

140

120

100

80

60

40

20

0

50

100

150

200

I

OUT (mA)

TJ = +85°C

TJ = −40°C

TJ = +125°C

TJ (°C)

2.0

1.5

1.0

0.5

0

−0.5

−1.0

−1.5

−2.0

I

OUT = 100mA

I

OUT = 200mA

I

OUT = 1mA

−40 −25

5

35

65

95

50

125

−15

20

80

110

100

90

80

70

60

50

40

30

20

10

0

2.5

3.0

3.5

4.0

5.0

6.0

7.0

4.5

5.5

6.5

V

IN (V)

I

OUT = 200mA

TJ (°C)

200

180

160

140

120

100

80

60

40

20

0

5

35

65

95

50

125

20

80

110

I

OUT = 100mA

I

OUT = 200mA

I

OUT = 1mA

−40 −25 −15

TPS79901, TPS79915, TPS79916, TPS79918

TPS79925, TPS79927, TPS79928, TPS799285

TPS79929, TPS79930, TPS79932, TPS79933

SBVS056C – JANUARY 2005 – REVISED MAY 2005

Over operating temperature range (T

J=- 40°C to +125°C), VIN=VOUT(TYP) + 0.3V or 2.7V, whichever is greater; IOUT=1mA, VEN =

V

IN, COUT=2.2µF, CNR=0.01µF, unless otherwise noted. For TPS79901, VOUT=3.0V. Typical values are at TJ=+25°C.

LOAD REGULATION

LINE REGULATION

Figure 3.

Figure 4.

OUTPUT VOLTAGE vs

TPS799285 DROPOUT VOLTAGE vs

JUNCTION TEMPERATURE

OUTPUT CURRENT

Figure 5.

Figure 6.

TPS799285 DROPOUT VOLTAGE vs

TPS79901 DROPOUT vs

JUNCTION TEMPERATURE

INPUT VOLTAGE

Figure 7.

Figure 8.

6

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