LP2985-50 datasheet(7/29 Pages) TI

Part #	LP2985-50

Description	150-mA Low-noise Low-dropout Regulator With Shutdown

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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200

220

240

260

280

300

320

0

0.5

1

1.5

2

2.5

3

3.5

Output Voltage − (V)

VO = 3.3 V

−100

100

300

500

700

Time − (ms)

VI = 16 V

VO = 3.3 V

Ci = 1 mF

Cbyp = 0.01 mF

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5

−500

0

500

1000

1500

2000

Time − (ms)

VI = 6 V

VO = 3.3 V

Ci = 1 mF

Cbyp = 0.01 mF

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

−50

−25

0

25

50

75

100

125

150

VO = 3.3 V

Cbyp = 10 nF

150 mA

50 mA

10 mA

1 mA

Temperature − ( C)

°

9.85

9.90

9.95

10.00

10.05

10.10

10.15

10.20

-50

-25

0

25

50

75

100

125

150

Temperature – °C

VI = 11 V

VO = 10 V

CI = 1 µF

CO = 4.7 µF

IO = 1 mA

3.295

3.305

3.315

3.325

3.335

3.345

−50

−25

0

25

50

75

100

125

150

VI = 4.3 V

VO = 3.3 V

Ci = 1 mF

Co = 4.7 mF

IO = 1 mA

Temperature − ( C)

°

LP2985

www.ti.com

SLVS522O – JULY 2004 – REVISED JANUARY 2015

6.6 Typical Characteristics

CIN = 1 μF, COUT = 4.7 μF, VIN = VOUT(NOM) + 1 V, TA = 25°C, ON/OFF pin tied to VIN (unless otherwise specified)

Figure 2. Output Voltage vs Temperature

Figure 1. Output Voltage vs Temperature

Figure 3. Dropout Voltage vs Temperature

Figure 4. Short-circuit Current vs Time

Figure 5. Short-circuit Current vs Time

Figure 6. Short-circuit Current vs Output Voltage

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