LOW-DROPOUT

REGULATORS

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

FUNCTIONAL BLOCK DIAGRAM

Copyright © 2000, Allegro MicroSystems, Inc.

A82xxSLM Maximum Allowable Average Output Current* with device mounted on 2.24" x 2.24"

(56.9 mm x 56.9 mm) solder-coated copper-clad board in still air.

Allowable Total Average (10 ms) Output Current in Milliamperes with T

V

T

A

1.5

2.0

2.5

3.0

3.5

4.0*

4.5*

25

°C

100

100

100

100

100

100

100

50

°C

100

100

100

100

100

100

100

70

°C

100

100

100

100

100

91

81

85

°C

100

100

100

98

84

74

66

* Absolute maximum peak output current rating is 100 mA; absolute maximum input voltage is 7 V.

† I

Output current rating can be increased (to 100 mA maximum) by additional heat sinking or reducing the duty cycle.

Dwg. FS-012-5B

BIAS

DRIVE

BANDGAP

REF.

ERROR

AMP

IN

ENABLE

OUT

5

4

1

2

GND