PIN

1

2

3

5

4

PTH08080W

SLTS235D – FEBRUARY 2005 – REVISED SEPTEMBER 2013

www.ti.com

PIN ASSIGNMENT

TERMINAL FUNCTIONS

TERMINAL

I/O

DESCRIPTION

NAME

NO.

VI

1

I

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

This is the common ground connection for the VI and VO power connections. It is also the 0-Vdc reference for

GND

2

the Inhibit and VO Adjust control inputs.

VO

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 2) 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 stability of the

VO Adjust

4

I

resistor should be 100 ppm/°C (or better). The set-point range is from 0.9 V to 5.5 V. The electrical

specification table gives the standard resistor value for a number of common output voltages. See 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 input current

Inhibit

5

I

drawn by the regulator is significantly reduced. If the Inhibit pin is left open-circuit, the module produces an

output voltage whenever a valid input source is applied. Do not place an external pull-up on this pin.

Figure 1. Terminal Location

TYPICAL CHARACTERISTICS (5-V INPUT) (1) (2)

(1)

The electrical characteristic data has been developed from actual products tested at 25°C. This data is considered typical for the

converter. Applies to Figure 2, Figure 3, and Figure 4.

(2)

The temperature derating curves represent the conditions at which internal components are at or below the manufacturer's maximum

operating temperatures. Derating limits apply to modules soldered directly to a 100-mm × 100-mm, double-sided PCB with 2-oz. copper.

Applies to Figure 5.

4

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