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PTH04000WAZ1

更新时间： 2024-11-27 21:55:11
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
20页 1316K
描述
3-A, 3.3/5-V INPUT, ADJUSTABLE SWITCHING REGULATOR

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PTH04000WAZ1 数据手册

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PTH04000W  
www.ti.com  
SLTS247A–JUNE 2005–REVISED JULY 2005  
3-A, 3.3/5-V INPUT, ADJUSTABLE SWITCHING REGULATOR  
WITH AUTO-TRACK™ SEQUENCING  
FEATURES  
•
•
Surface Mount Package  
•
•
•
Up to 3-A Output Current at 85°C  
Safety Agency Approvals:  
UL/CUL 60950, EN60950 VDE (Pending)  
3.3-V / 5-V Input Voltage  
•
Point-of-Load Alliance (POLA™) Compatible  
Wide-Output Voltage Adjust  
(0.9 V to 3.6 V)  
APPLICATIONS  
•
•
•
•
Efficiencies Up To 94%  
On/Off Inhibit  
•
Telecommunications, Instrumentation,  
and General-Purpose Circuits  
Undervoltage Lockout (UVLO)  
Output Overcurrent Protection  
(Nonlatching, Auto-Reset)  
•
•
Overtemperature Protection  
Ambient Temperature Range: –40°C to 85°C  
DESCRIPTION  
The PTH04000W is a highly integrated, low-cost switching regulator module that delivers up to 3 A of output  
current. Occupying a small PCB area, the PTH04000W provides output current at a high efficiency and with  
minimal power dissipation, thereby eliminating the need for a heat sink. Their small size (0.75 inch × 0.5 inch),  
high efficiency, and low cost makes these modules practical for a variety of applications.  
The input voltage range of the PTH04000W 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 PTH04000W 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. This series  
includes Auto-Track™ sequencing. This feature simplifies the task of supply voltage sequencing in a power  
system by enabling modules to track each other, or any external voltage, during power up and power down.  
Other 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 sur-  
face-mount package options, including tape and reel. The PTH04000W is also compatible with TI's roadmap for  
RoHS and lead-free compliance.  
STANDARD APPLICATION  
V
O
1
2
3
4
6
Track  
PTH04000W  
(Top View)  
V
I
C *  
O
+
C *  
I
5
47 µF  
47 µF  
(Optional)  
(Required)  
R
#
Inhibit  
SET  
1%, 0.1 W  
(Required)  
GND  
GND  
* See the Application Information section for capacitor recommendations.  
# See the Application Information section for R 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.  
POLA, Auto-Track, TMS320 are trademarks of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 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...20

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