Advanced Monolithic Systems, Inc.

6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140

AMS78LXX

TYPICAL APPLICATIONS

Fixed Output Regulator

AMS78LXX

V

IN

UNREGULATED

INPUT

V

OUT

REGULATED

OUTPUT

C2**

10

µF

C1*

0.33

µF

GND

I

Q

*Required if regulator is located far from power supply filter.

**C2 must be at least 10

µF to maintain stability; it can be increased without bound to maintain regulation during transients and it should be

located as close as possible to the regulator. This capacitor must be rated over the same operating temperature range like the regulator.

Current Regulator

Maximum Power Dissipation (SOT-89)

AMBIENT TEMPERATURE (° C)

0 10

40

60

80

0

1.2

1.4

1.8

2.2

2.0

1.6

1.0

0.8

0.6

0.4

0.2

20 30

50

70

90 100

0.5

1.0

Maximum Power Dissipation (SO-8)

0.1

0.2

0.3

0.4

0.6

0.7

0.8

0.9

AMBIENT TEMPERATURE (° C)

10 20 30 40 50 60 70 80 90

0

0

0.5

1.0

Maximum Power Dissipation (TO-92)

0.1

0.2

0.3

0.4

0.6

0.7

0.8

0.9

AMBIENT TEMPERATURE (° C)

0.125" Lead Lenght

from PC Board

10 20 30 40 50 60 70 80

0

0

0.4" Lead

Lenght from

PC Board

AMS78LXX

INPUT

OUTPUT

R1

C1

0.33

µF

I

OUT