AIC1740-30CF datasheet(5/7 Pages) AIC

Part #	AIC1740-30CF

Description	Low Output Voltage, 500mA Low Dropout Linear Regulator

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Manufacturer	AIC [Analog Intergrations Corporation]

Direct Link	http://www.analog.com.tw

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5 / 7 page

AIC1740

5

n BLOCK DIAGRAM

1.235V

Reference

GND

VOUT

VIN

ERROR

AMP

+

-

THERMAL

SHUTDOWN

-

+

CURRENT

LIMITING

n PIN DESCRIPTION

VOUT PIN - Output pin.

GND PIN - Power GND.

VIN PIN

- Power Supply Input.

n APPLICATION INFORMATIONS

A 4.7

µF (or greater) capacitor is required between

the AIC1740 output and ground for stability.

Without this capacitor the part will oscillate. Even

though most types of capacitor may work, the

equivalent series resistance (ESR) should be held

to 5

Ω or less if Aluminum electrolytic type is used.

Many Aluminum electrolytics have electrolytes that

freeze at about -30

°C, so solid tantalums are

recommended for operation below -25

°C. The

value of this capacitor may be increased without

limit.

A 0.1

µF capacitor (or greater) should be placed

from the AIC1740 input to ground if the lead

inductance between the input and power source

exceeds 500nH (approximately 10 inches of trace).

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AIC1740-30CF Datasheet(PDF) 5 Page - Analog Intergrations Corporation

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