MAX1793EUE-50 datasheet(3/11 Pages) MAXIM

Part #	MAX1793EUE-50

Description	Low-Dropout, Low IQ, 1A Linear Regulator

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Manufacturer	MAXIM [Maxim Integrated Products]

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Low-Dropout, Low IQ, 1A Linear Regulator

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3

ELECTRICAL CHARACTERISTICS (continued)

(VIN = VOUT(NOM) + 0.5V or VIN = 2.5V (whichever is greater), SHDN = IN, TA = +0°C to +85°C, unless otherwise noted. Typical values

are at TA = +25°C.)

ELECTRICAL CHARACTERISTICS

(VIN = VOUT(NOM) + 0.5V or VIN = 2.5V (whichever is greater), SHDN = IN, TA = -40°C to +85°C, unless otherwise noted.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VIH

1.6

SHDN Input Threshold

VIL

+2.5V < VIN < +5.5V

0.6

V

SHDN Input Bias Current

ISHDN

SHDN = GND or IN

0.01

1µA

RST Output Low Voltage

VOL

ISINK = 1mA

0.1

V

Operating Voltage Range for

RST Valid

ISINK = 100µA

1.0

5.5

V

RST Output High Leakage

V RST = +5.5V

0.01

1µA

RST Trip Level Referred to

Nominal VOUT

Rising edge

90

94

96

% VOUT

RST Release Delay

Rising edge

1.5

4.0

8.0

ms

Thermal Shutdown Temperature

TSHDN

Typical thermal hysteresis = 20°C

170

°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage

VIN

2.5

5.5

V

Input Undervoltage Lockout

VIN

2.0

2.3

V

IOUT = 250mA

-2.5

2.5

Output Voltage Accuracy

(preset mode, SET = GND)

IOUT = 1mA to 1A, VIN > VOUT + 0.5V

-3.2

3.2

%

IOUT = 250mA, VIN = 3V

1.216

1.284

SET Voltage Threshold

(for adjustable output)

IOUT = 1mA to 1A, VIN = 3V

1.210

1.290

V

Adjustable Output Voltage

Range

1.25

5

V

Maximum Output Current

IOUT

Continuous, VIN

≥ 3V

1

ARMS

Short-Circuit Current Limit

ILIM

VOUT = 0V, VIN

≥ 3V

1.1

3.3

A

SET Pin Dual Mode Threshold

50

150

mV

SET Input Bias Current

ISET

VSET = +1.25V

±100

nA

Ground Current

IGND

IOUT = 100µA

200

µA

MAX1793-33, -50

350

Dropout Voltage (Note 1)

VIN -

VOUT

IOUT = 1A,

SET = GND

MAX1793-25

450

mV

Line Regulation

∆VLNR

VIN from (VOUT + 0.1V) to +5.5V,

IOUT = 5mA, SET = GND

-0.15

0.15

%/V

Shutdown Supply Current

IOFF

SHDN = GND, VIN = +5.5V

16

µA

VIH

1.6

SHDN Input Threshold

VIL

+2.5V < VIN < +5.5V

0.6

V

SHDN Input Bias Current

ISHDN

SHDN = GND or IN

1

µA

RST Output Low Voltage

VOL

ISINK = 1mA

0.1

V

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