MAX1982EUT-T datasheet(3/13 Pages) MAXIM

Part #	MAX1982EUT-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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Low-Voltage, Low-Dropout Linear Regulators

with External Bias Supply

_______________________________________________________________________________________

3

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 3, VIN = 1.8V, ILOAD = 1mA, CLOAD = 10µF, TA = 0°C to +85°C, unless otherwise noted. Typical values are at

TA = +25°C.) (Note 1)

ELECTRICAL CHARACTERISTICS

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

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

Positive Load Step

tRISE

ILOAD = 1mA to full load, CLOAD = 10µF

10

µs

Negative Load Step

tFALL

ILOAD = full load to 1mA, CLOAD = 10µF

50

µs

Ripple Rejection at VIN

10Hz < f < 10kHz, ILOAD = 300mA,

CLOAD = 10µF

-60

dB

Startup Response Time

tON

ILOAD = 300mA, CLOAD = 10µF, 0% to 90%

of nominal output voltage

100

µs

Startup Overshoot

ILOAD = 300mA, CLOAD = 10µF

0.5

%

Falling edge, 3mV under trip threshold

10

µs

PGOOD Propagation Delay

tPD

Rising edge within 5% of regulation level

1

4

ms

PARAMETER

SYMBOL

CONDITIONS

MIN

MAX

UNITS

Input Voltage

VIN

1.25

5.5

V

BIAS Voltage

VBIAS

4.5

5.5

V

VOUT Voltage Range

VOUT

MAX1983

0.8

2.0

V

BIAS Input Undervoltage Lockout

3.8

4.2

V

Shutdown Supply Current

IIN

1.25V < VIN < 5.5V

5

µA

Quiescent BIAS Current

IQ

4.5V < VBIAS < 5.5V

250

µA

Shutdown BIAS Current

ISHDN

4.5V < VBIAS < 5.5V

5

µA

MAX1982: VIN = open, VOUT = 1.20V

30

VOUT Input Bias Current

MAX1983: VIN = open, 0.8V < VOUT < 2.0V

2

µA

REGULATOR CHARACTERISTICS

Line Regulation

ΔVOUT/

ΔVIN

ILOAD = 10mA, 1.5V < VIN < 5.5V

-0.15

+0.15

%/V

MAX1982 1.20V

Output Voltage Accuracy

VOUT

IOUT = 1mA to 300mA,

VOUT + 0.5V < VIN < 5.5V

-3

+3

%

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