© 2002 Microchip Technology Inc.

DS21380B-page 3

TC1269

2.0

PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 2-1.

TABLE 2-1:

PIN FUNCTION TABLE

Pin No.

(8-Pin SOIC)

Symbol

Description

Regulated voltage output.

2

NC

No connect.

3

NC

No connect.

4

GND

Ground terminal.

5

Bypass

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

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 is fully enabled when a logic high is applied to this input. The regulator enters shut-

down 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.