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PTN78020W PDF预览

PTN78020W

更新时间： 2024-11-12 22:44:15
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关输入元件
页数 文件大小 规格书
25页 1931K
描述
6-A, WIDE-INPUT ADJUSTABLE SWITCHING REGULATOR

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PTN78020W 数据手册

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PTN78020W  
PTN78020H  
www.ti.com  
SLTS228A–DECEMBER 2004–REVISED APRIL 2005  
6-A, WIDE-INPUT ADJUSTABLE SWITCHING REGULATOR  
FEATURES  
•
•
•
Overtemperature Shutdown  
•
6-A Output Current  
Operating Temperature: -40°C to 85°C  
•
Wide-Input Voltage  
Surface Mount Package Available  
(7 V to 36 V) / (15 V to 36 V)  
APPLICATIONS  
•
Wide-Output Voltage Adjust  
(2.5 V to 12.6 V) / (11.85 V to 22 V)  
•
General-Purpose, Industrial Controls,  
HVAC Systems, Test and Measurement,  
Medical Instrumentation, AC/DC Adaptors,  
Vehicles, Marine, and Avionics  
•
•
•
•
High Efficiency (Up to 96%)  
On/Off Inhibit  
Undervoltage Lockout  
Output Current Limit  
DESCRIPTION  
The PTN78020 is a series of high-efficiency, step-down integrated switching regulators (ISRs), that represent the  
third generation in the evolution of high-performance power modules designed for industrial use. The wide-input  
voltage range makes these modules suitable for a variety of applications that operate off 12–V, 24–V, and 28–V  
dc power. In new designs they should be considered in place of the PT6620, PT6650, PT6680, and PT6880  
series of single in-line pin (SIP) products. The PTN78020 is smaller and lighter than its predecessors, and 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 PTN78020 provides high-efficiency, step-down voltage  
conversion for loads of up to 6 A. The output voltage is set using a single, external resistor. The PTN78020W  
may be set to any value within the range, 2.5 V to 12.6 V, and the PTN78020H from 11.85 V to 22 V. The output  
voltage of the PTN78020W 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 PTN78020H 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 PTN78020 has undervoltage lockout, an integral on/off inhibit, and includes an output current limit and  
overtemperature protection.  
STANDARD APPLICATION  
7
1
PTN78020  
(Top View)  
V
I
2
V
O
6
V
O
Sense  
Inhibit  
3
4
5
L
O
A
D
#
SET  
R
C *  
O
C *  
I
1%, 0.05 W  
(Required)  
Ceramic  
(Required)  
330 mF  
(Required)  
GND  
GND  
*See the Application Information section for capacitor recommendations. The minimum input capacitance  
for is 2.2 mF for PTN78020W, and 18.8 mF (4 x 4.7 mF) for PTN78020H  
#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.  
1234567...25

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PTN78020W 替代型号

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