MAX1983EUT-T datasheet(4/13 Pages) MAXIM

Part #	MAX1983EUT-T

Description	Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply

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Manufacturer	MAXIM [Maxim Integrated Products]

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INPUT CURRENT vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

4.5

3.5

2.5

26

27

28

29

30

25

1.5

5.5

VBIAS = 5V

BIAS INPUT CURRENT

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

4.5

3.5

2.5

135

140

145

150

130

1.5

5.5

VBIAS = 5V

GROUND CURRENT vs. OUTPUT CURRENT

OUTPUT CURRENT (mA)

250

200

150

100

50

160

165

170

175

155

0300

VBIAS = 5V

VIN = 1.8V

Typical Operating Characteristics

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

Low-Voltage, Low-Dropout Linear Regulators

with External Bias Supply

4

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 3, VIN = 1.8V, VOUT = 1.2V, ILOAD = 1mA, CLOAD = 10µF, TA = -40°C to +85°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

MAX

UNITS

MAX1983 0.80V

Output Voltage Accuracy

VOUT

IOUT = 1mA to 300mA,

VOUT + 0.5V < VIN < 5.5V

-3

+3

%

ILOAD = 300mA

350

Dropout Voltage

VDO

ILOAD = 150mA

175

mV

Current Limit

ILIM

VIN - VOUT = 1.3V

330

1400

mA

PGOOD COMPARATOR

Comparator Threshold

% of regulated output voltage

-12.5

-6

%

LOGIC AND I/O

SHDN Input High Voltage

VIH

2.4

V

SHDN Input Low Voltage

VIL

0.8

V

SHDN Input Current

-1

+1

µA

PGOOD Output Low Voltage

PGOOD sinking 1mA

0.1

V

PGOOD Output High Leakage

Current

0 < VPGOOD < VIN

-1

+1

µA

DYNAMICS

PGOOD Propagation Delay

tPD

Rising edge within 5% of regulation level

1

4

ms

Note 1: Specifications over temperature are guaranteed by design, not production tested.

Note 2: VOUT is 1.2V for MAX1982. For MAX1983 VOUT is set to 1.2V with circuit of Figure 4.

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