PTN78060W
www.ti.com
SLTS229–NOVEMBER 2004
3-A, WIDE-INPUT ADJUSTABLE SWITCHING REGULATOR
FEATURES
APPLICATIONS
•
•
•
General-Purpose, Industrial Controls,
HVAC Systems
Test and Measurement,
Medical Instrumentation
AC/DC Adaptors, Vehicles,
Marine, and Avionics
•
3-A Output Current
•
Wide-Input Voltage
(7 V to 36 V)
•
Wide-Output Voltage Adjust
(2.5 V to 12.6 V)
•
•
•
•
•
•
High Efficiency (Up to 96%)
On/Off Inhibit
Output Current Limit
Overtemperature Shutdown
Operating Temperature: –40°C to 85°C
Surface Mount Package
DESCRIPTION
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 of 7 V to 36 V, 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 adjust range of the W-suffix part is 2.5 V to 12.6 V. The output voltage
can be as little as 2 V lower than the input, allowing operation down to 7 V, with an output voltage of 5 V. Other
features include an integral on/off inhibit. An output voltage sense ensures tight load regulation.
The PTN78060 is suited to a wide variety of general-purpose industrial applications that operate off 12-V, 24-V,
or 28-V dc power.
STANDARD APPLICATION
1
7
PTN78060
(Top View)
V
O
V
I
6
2
V
O
Sense
3
4
5
Inhibit
L
O
A
D
C *
I
C *
O
2.2 mF
100 mF
Ceramic
(Required)
(Optional)
R
#
SET
1 %, 0.05 W
(Required)
GND
GND
*See The Application Information for Capacitor Recommendation.
#R is Required to Adjust the Output Voltage Higher Than 2.5 V. See The Application Information for Values.
SET
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, 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.