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PTN780X0H

更新时间： 2024-09-25 03:10:23
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德州仪器 - TI 稳压器开关输入元件
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24页 1670K
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3-A, WIDE-INPUT ADJUSTABLE SWITCHING REGULATOR

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PTN780X0H 数据手册

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PTN78060W, PTN78060H  
www.ti.com  
SLTS229A–NOVEMBER 2004–REVISED APRIL 2005  
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) / (15 V to 36 V)  
•
Wide-Output Voltage Adjust  
(2.5 V to 12.6 V) / (11.85 V to 22 V)  
•
•
•
•
•
•
•
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  
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, 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.  
STANDARD APPLICATION  
7
1
PTN78060  
(Top View)  
V
I
2
V
O
6
V
O
Sense  
Inhibit  
3
4
5
L
O
A
D
#
R
SET  
C *  
I
C *  
O
1%, 0.05 W  
(Required)  
Ceramic  
(Required)  
100 mF  
(Required)  
GND  
GND  
*See the Application Information section for capacitor recommendations. The minimum input capacitance  
is 2.2 mF for PTN78060W, and 14.1 mF (3 x 4.7 mF) for PTN78060H.  
#R  
is required to adjust the output voltage. See the Application Information section 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 © 2004–2005, 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.  
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