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PIN ASSIGNMENT

PTH04070W

SLTS227 – SEPTEMBER 2004

TERMINAL FUNCTIONS

TERMINAL

I/O

DESCRIPTION

NAME

NO.

1

I

The positive input voltage power node to the module, which is referenced to common GND.

GND

2

3

O

The regulated positive power output with respect to the GND node.

A 1% resistor must be connected between this pin and GND (pin 1) to set the output voltage of the

module higher than 0.9 V. If left open-circuit, the output voltage defaults to this value. The temperature

4

I

stability of the resistor should be 100 ppm/

°C (or better). The set-point range is from 0.9 V to 3.6 V. The

electrical specification table gives the standard resistor value for a number of common output voltages.

Refer to the application information for further guidance.

The Inhibit pin is an open-collector/drain-negative logic input that is referenced to GND. Applying a

low-level ground signal to this input disables the module's output. When the Inhibit control is active, the

Inhibit

5

I

input current drawn by the regulator is significantly reduced. If the Inhibit pin is left open-circuit, the

module will produce an output voltage whenever a valid input source is applied.

4