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DS21437C-page 3

TC57

2.0

PIN DESCRIPTIONS

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

TABLE 2-1:

PIN FUNCTION TABLE

Pin No.

(5-Pin SOT-23A)

Symbol

Description

1

GND

Ground terminal.

Supply voltage input. Positive input voltage of 2.7V to 8.0V.

Regulator voltage sense input. Connects to the collector of the external PNP pass transistor.

4

EXT

Base Drive for the external PNP pass transistor.

5

SHDN

Shutdown Input. The device is enabled when SHDN

V

shutdown state when SHDN

V

falls to less than 1

A.