8205

LOW-DROPOUT

REGULATORS

115 Northeast Cutoff, Box 15036

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

FUNCTIONAL BLOCK DIAGRAM

Copyright © 1999, 2000 Allegro MicroSystems, Inc.

A8205SLH 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

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0*

4.5*

25

°C

200

200

200

200

200

189

162

142

126

50

°C

200

200

200

200

182

152

130

114

101

70

°C

200

200

200

182

145

121

104

91

81

85

°C

200

200

197

148

118

98

84

74

66

* Absolute maximum peak output current rating is 200 mA; absolute maximum input voltage is 7 V.

† I

Output current rating can be increased (to 200 mA maximum) by additional heat sinking or reducing the duty cycle.

DRIVE

BANDGAP

REF.

ERROR

AMP

Dwg. FS-012-6

BIAS

IN

ENABLE

OUT

1

5

3

2

GND

ADJUST

(SUFFIX "-ADJ" ONLY)

OTHERWISE

NO CONNECTION

(FIXED REG'S)

4