MAX8940 datasheet(2/9 Pages) MAXIM

2 / 9 page

Low-Noise, High PSRR,

Low-Dropout, 120mA Linear Regulator

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VIN = VOUT + 0.5V, TA = -40°C to +85°C, unless otherwise noted. CIN = 1µF, COUT = 1µF, CBP = 10nF. Typical values are at +25°C;

the MAX8940 is tested with 2.45V output, unless otherwise noted.) (Note 1)

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 to GND .................................................................-0.3V to +7V

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

OUT, SHDN to GND ......................................-0.3V to (IN + 0.3V)

FB, BP, N.C. to GND..................................-0.3V to (OUT + 0.3V)

Continuous Power Dissipation (TA = +70°C)

5-Pin SC70 (derate 3.1mW/°C above +70°C) ..............0.247W

θJA

5-Pin SC70 ................................................................324°C/W

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage Range

VIN

2.8

IOUT = 1mA, TA = +25°C

-1

IOUT = 100µA to 80mA, TA = +25°C

-2

Output Voltage Accuracy

IOUT = 100µA to 80mA

-3

Maximum Output Current

IOUT

120

Current Limit

ILIM

OUT = 90% of nominal value

130

200

300

VOUT = 3V, IOUT = 80mA

170

VOUT = 3V, IOUT = 120mA

120

VOUT = 2.8V, IOUT = 80mA

200

Dropout Voltage (Note 2)

VOUT = 2.8V, IOUT = 120mA

135

IOUT = 0.05mA

Ground Current

VIN = VOUT (nom) - 0.1V, IOUT = 0mA

220

500

µA

Line Regulation

VLNR

VIN = (VOUT + 0.5V) to 6V, IOUT = 0.1mA

0.001

%/V

Load Regulation

VLDR

IOUT = 1mA to 80mA

0.003

%/mA

TA = +25°C

0.003

Shutdown Supply Current

ISHDN

SHDN = 0V

TA = +85°C

0.05

µA

f = 10kHz, IOUT = 10mA

Ripple Rejection

PSRR

f = 100kHz, IOUT = 10mA

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