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PTH04070W

更新时间： 2024-11-27 22:26:11
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
15页 394K
描述
3-A, 3.3/5-V INPUT ADJUSTABLE SWITCHING REGULATOR

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PTH04070W 数据手册

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PTH04070W  
www.ti.com  
SLTS227–SEPTEMBER 2004  
3-A, 3.3/5-V INPUT ADJUSTABLE SWITCHING REGULATOR  
FEATURES  
•
•
•
Ambient Temp. Range: –40°C to 85°C  
•
•
•
Up to 3-A Output Current at 85°C  
Surface Mount Package  
3.3-V / 5-V Input Voltage  
Safety Agency Approvals:  
UL/CUL 60950, EN60950 VDE (Pending)  
Wide-Output Voltage Adjust  
(0.9 V to 3.6 V)  
160 W/in3 Power Density  
Efficiencies Up To 94%  
On/Off Inhibit  
APPLICATIONS  
•
•
•
•
•
•
Telecommunications, Instumentation,  
and General-Purpose Circuits  
Undervoltage Lockout (UVLO)  
Output Overcurrent Protection  
(Nonlatching, Auto-Reset)  
•
Overtemperature Protection  
DESCRIPTION  
The PTH04070W is a highly integrated, low-cost switching regulator module that delivers up to 3 A of output  
current. Occupying less PCB area than a standard TO-220 linear regulator IC, the PTH04070W provides output  
current at a much higher efficiency and with much less power dissipation, thereby eliminating the need for a heat  
sink. Their small size (0.5 × 0.4 in), high efficiency, and low cost makes these modules attractive for a variety of  
applications.  
The input voltage range of the PTH04070W is from 3 V to 5.5 V, allowing operation from either a 3.3-V or 5-V  
input bus. Using state-of-the-art switched-mode power-conversion technology, the PTH04070W can step down to  
voltages as low as 0.9 V from a 5-V input bus, with typically less than 1 W of power dissipation. The output  
voltage can be adjusted to any voltage over the range, 0.9 V to 3.6 V, using a single external resistor. Operating  
features include an undervoltage lockout (UVLO), on/off inhibit, output overcurrent protection, and  
overtemperature protection. Target applications include telecommunications, test and measurement applications,  
and high-end consumer products. The modules are available in both through-hole and surface-mount package  
options, including tape and reel.  
STANDARD APPLICATION  
Inhibit  
5
4
R
SET  
#
0.05 W , 1%  
(Required)  
V
I
V
O
PTH04070W  
(Top View)  
1
3
C3*  
47 mF  
2
C1*  
47 mF  
Ceramic  
C2*  
Electroytic  
(Recommended)  
GND  
47 mF  
Ceramic  
(Required)  
(Required)  
GND  
#See The Specification Table for Value  
*See The Capacitor Application Information  
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.  
1234567...15

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