AIC1732 Ver la hoja de datos (PDF) - Analog Intergrations

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AIC1732

300mA Low Dropout Linear Regulator

Analog Intergrations 

AIC1732

n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

Load Transient Response

100

COUT= 1 µF

V OUT= 5 .2 V

0

-1 0 0

-2 0 0

150

0. 1

0

0.5 1. 0

1. 5

2.0 2.5 3.0

3.5

4.0 4.5 5.0

Time (mS)

n BLOCK DIAGRAM

Recommended Max. Output Current v.s. Input Voltage

400

3. 3 V

3. 7 V

3.5V 3.8V

300

200

5.2V

5V

100

0

4

5

6

7

8

9

10

11

12

Input Voltage VIN (V)

VIN

CURRENT

LIMITING

-

ERROR

AMP

+

THERMAL

SHUTDOWN

1.235V

- Reference

n PIN DESCRIPTION

VOUT PIN - Output pin.

GND PIN - Power GND.

VIN PIN - Power Supply Input.

n APPLICATION INFORMATIONS

A 1µF (or greater) capacitor is required between

the AIC1732 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 5Ω 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

VOUT

GND

value of this capacitor may be increased without

limit.

A 0.1µF capacitor (or greater) should be placed

from the AIC1732 input to ground if the lead

inductance between the input and power source

exceeds 500nH (approximately 10 inches of trace).

5

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