10

100

1k

10k

100k

FREQUENCY (Hz)

-70

-60

-50

-40

-30

-20

-10

0

0

50

100

150

200

250

300

LOAD CURRENT (mA)

0

50

100

150

200

250

85°C

25°C

-40°C

0

1

2

3

4

5

INPUT VOLTAGE (V)

0

20

40

60

80

100

240

6

120

140

160

180

200

220

IL = 0mA

TA = 85°C

TA = 25°C

TA = -40°C

0

50

100

150

200

250

300

0

20

40

60

80

100

120

140

160

180

LOAD CURRENT (mA)

FAULT = HIGH

FAULT = LOW

0

50

100

150

200

250

300

LOAD CURRENT (mA)

0

20

40

60

80

100

120

140

VO = 2.77V

VO = 2.5V

VO = 3.3V

0

50

100

150

200

250

300

LOAD CURRENT (mA)

0

20

40

60

80

100

120

140

160

85°C

25°C

-40°C

7

LP3982

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SNVS185F – FEBRUARY 2002 – REVISED APRIL 2017

Product Folder Links: LP3982

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Copyright © 2002–2017, Texas Instruments Incorporated

6.6 Typical Characteristics

Unless otherwise specified, VIN = VO + 0.5 V, CIN = COUT = 2.2 μF, CCC = 33 nF, TJ = 25°C, VSHDN = VIN.

Figure 1. Dropout Voltage vs Load Current

(for Different Output Voltages)

Figure 2. Dropout Voltage vs Load Current

(for Different Output Temperatures)

Figure 3. FAULT Detect Threshold vs Load Current

Figure 4. Supply Current vs Input Voltage

Figure 5. Supply Current vs Load Current

Figure 6. Power Supply Rejection Ratio vs Frequency