MAX1793EUE-50 datasheet(2/11 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

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(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.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

IN, SHDN, RST to GND ............................................-0.3V to +6V

OUT, SET to GND ........................................-0.3V to (VIN + 0.3V)

Output Short-Circuit Duration ............................................Infinite

Continuous Power Dissipation (TA = +70°C)

TSSOP-EP (derate 19mW/°C above +70°C) .....................1.5W

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Soldering Temperature (reflow) .......................................+260°C

Soldering Temperature (reflow)

Lead(Pb)-

Free Packages..............................................+260°C

Packages

Containing Lead(Pb)....................................+240°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

Preset VOUT

≥ 2.5V

-1

+1

TA = +85

°C,

IOUT = 250mA

Preset VOUT < 2.5V

-1.5

+1.5

TA = 0

°C to +85°C, IOUT = 250mA

-2

+2

Output Voltage Accuracy

(Preset Mode, SET = GND)

TA = 0

°C to +85°C, IOUT = 1mA to 1A,

VIN > VOUT + 0.5V

-3

+3

%

TA = +85

°C, IOUT = 250mA, VIN = 3V

1.229

1.250

1.271

TA = 0

°C to +85°C, IOUT = 250mA, VIN = 3V

1.219

1.281

SET Voltage Threshold

(For Adjustable Output)

TA = 0

°C to +85°C, IOUT = 1mA to 1A, VIN = 3V

1.212

1.288

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

1.8

3.3

A

In-Regulation Current Limit

VOUT within 4% of nominal output voltage,

VIN = 5.5V

2.8

A

SET Pin Dual Mode Threshold

50

150

mV

SET Input Bias Current

ISET

VSET = +1.25V

±100

nA

Ground Current

IGND

IOUT = 100µA

125

200

µA

MAX1793-33, -50

210

350

Dropout Voltage (Note 1)

VIN - VOUT

IOUT = 1A,

SET = GND

MAX1793-25

270

450

mV

Line Regulation

∆VLNR

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

IOUT = 5mA, SET = GND

-0.15

0

+0.15

%/V

Load Regulation

∆VLDR

IOUT = 100µA to 1A

0.7

%

Output Voltage Noise

10Hz to 1MHz, COUT = 6.8µF (ESR < 0.1

Ω)

115

µVRMS

Shutdown Supply Current

IOFF

SHDN = GND, VIN = +5.5V

0.1

16

µA

Output Pulldown Resistance in

Shutdown

SHDN = GND

5

k

Ω

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