MAX1982 datasheet(5/12 Pages) MAXIM

5 / 12 page

Low-Voltage, Low-Dropout Linear Regulators

with External Bias Supply

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INPUT CURRENT vs. TEMPERATURE

TEMPERATURE (

°C)

-15

25.5

26.0

26.5

27.0

27.5

28.0

25.0

-40

VBIAS = 5V

BIAS SUPPLY CURRENT vs. TEMPERATURE

TEMPERATURE (

°C)

-15

120

125

130

135

140

145

150

115

-40

VBIAS = 5V

DROPOUT VOLTAGE vs. OUTPUT CURRENT

OUTPUT CURRENT (mA)

250

200

150

100

150

200

300

VBIAS = 5V

OUTPUT VOLTAGE ERROR

vs. OUTPUT CURRENT

OUTPUT CURRENT (mA)

250

200

100

150

-0.75

-0.50

-0.25

0.25

0.50

0.75

1.00

-1.00

300

VBIAS = 5V

VIN = 1.8V

OUTPUT VOLTAGE ERROR vs. TEMPERATURE

TEMPERATURE (

°C)

-15

-0.75

-0.50

-0.25

0.25

0.50

0.75

1.00

-1.00

-40

VIN = 1.8V

ILOAD = 300mA

ILOAD = 200mA

ILOAD = 0mA

SHORT-CIRCUIT CURRENT LIMIT

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

4.50

3.50

2.50

100

200

300

400

500

600

700

800

1.50

5.50

POWER-SUPPLY REJECTION RATIO (VIN)

vs. FREQUENCY

FREQUENCY (Hz)

100k

10k

100

-90

-80

-70

-60

-50

-40

-30

-20

-10

-100

VIN = 2.1V

VP-P = 0.6V

ILOAD = 0

SHORT-CIRCUIT CURRENT LIMIT

vs. TEMPERATURE

TEMPERATURE (

°C)

-15

550

600

650

700

500

-40

Typical Operating Characteristics (continued)

(Circuit of Figure 3, TA = +25°C, unless otherwise noted.)

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