© 2002 Microchip Technology Inc.

DS21374B-page 3

TC1263

2.0

PIN DESCRIPTIONS

Thedescriptionsof the pins arelistedinTable2-1.

TABLE 2-1:

PIN FUNCTION TABLE

Pin No.

(8-Pin SOIC)

Symbol

Description

Regulated voltage output.

2

GND

Ground terminal.

3

NC

No connect.

4

BYPASS

Reference bypass input. Connecting a 470pF to this input further reduces output noise.

5

ERROR

by approximately – 5%.

6

NC

No connect.

7

SHDN

Shutdown control input. The regulator is fully enabled when a logic high is applied to this input.

The regulator enters shutdown when a logic low is applied to this input. During shutdown, output

voltage falls to zero and supply current is reduced to 0.05

µA(typical).

Unregulated supply input.

Pin No.

(5-Pin DDPAK)

(5-Pin TO-220)

Symbol

Description

1

BYP

Reference bypass input. Connecting a 470pF to this input further reduces output noise.

2

SHDN

Shutdown control input. The regulator is fully enabled when a logic high is applied to this input.

The regulator enters shutdown when a logic low is applied to this input. During shutdown, output

voltage falls to zero and supply current is reduced to 0.05

µA(typical).

3

GND

Ground terminal.

Unregulated supply input.

Regulated voltage output.