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FEATURES

APPLICATIONS

DESCRIPTION

1

6

2

3

7

Inhibit

GND

GND

1%, 0.05 W

(Required)

PTN78060

(Top View)

STANDARD APPLICATION

4

5

L

O

A

D

C *

Ceramic

(Required)

I

C *

100 F

m

(Required)

O

*See the

section for capacitor recommendations. The minimum input capacitance

is

PTN78060W, and

PTN78060H.

Application Information

2.2 F for

14.1 F (3 x 4.7 F) for

m

m

m

#R

oltage. See the

section for Values.

SET

Application Information

is required to adjust the output v

PTN78060W, PTN78060H

SLTS229A – NOVEMBER 2004 – REVISED APRIL 2005

3-A, WIDE-INPUT ADJUSTABLE SWITCHING REGULATOR

•

General-Purpose, Industrial Controls,

•

3-A Output Current

HVAC Systems

•

Wide-Input Voltage

•

Test and Measurement,

(7 V to 36 V) / (15 V to 36 V)

Medical Instrumentation

•

Wide-Output Voltage Adjust

•

AC/DC Adaptors, Vehicles,

(2.5 V to 12.6 V) / (11.85 V to 22 V)

Marine, and Avionics

•

High Efficiency (Up to 96%)

•

On/Off Inhibit

•

Under-Voltage Lockout

•

Output Current Limit

•

Overtemperature Shutdown

•

Operating Temperature: -40

°C to 85°C

•

Surface Mount Package Available

The PTN78060 is a series of high-efficiency, step-down integrated switching regulators (ISR), that represent the

third generation in the evolution of the popular (PT)78ST200, 78ST300, (PT)78HT200, and 78HT300 series of

products. In new designs, the PTN78060 series may also be considered in place of the PT6200, PT6210, and

PT6300 series of single in-line pin (SIP) products. In all cases, the PTN78060 has either similar or improved

electrical performance characteristics. The caseless, double-sided package has excellent thermal characteristics,

and is compatible with TI's roadmap for RoHS and lead-free compliance.

Operating from a wide-input voltage range, the PTN78060 provides high-efficiency, step-down voltage

conversion for loads of up to 3 A. The output voltage can be set to any value over a wide adjustment range using

a single external resistor. The PTN78060W may be set to any value within the range, 2.5 V to 12.6 V, and the

PTN78060H from 11.85 V to 22 V. The output voltage of the PTN78060W can be as little as 2 V lower than the

input, allowing operation down to 7 V, with an output voltage of 5 V. The output voltage of the PTN78060H can

be as little as 3 V lower than the input, allowing operation down to 15 V, with an output voltage of 12 V.

The PTN78060 has undervoltage lockout, an integral on/off inhibit, and includes an output current limit and

overtemperature protection. It is well suited to a wide variety of general-purpose applications that operate off

12-V, 24-V, or 28-V DC power.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2004–2005, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.