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PTH08000WAS1

更新时间： 2024-11-05 22:14:31
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 1370K
描述
2.25-A, WIDE INPUT, ADJUSTABLE SWITCHING REGULATOR

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PTH08000WAS1 数据手册

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PTH08000W  
www.ti.com  
SLTS248–JUNE 2005  
2.25-A, WIDE INPUT, ADJUSTABLE SWITCHING REGULATOR  
WITH AUTO-TRACK™ SEQUENCING  
FEATURES  
•
•
Surface-Mount Package  
Safety Agency Approvals:  
UL/CUL 60950, EN60950 VDE (Pending)  
•
•
•
Up to 2.25-A Output Current at 85°C  
4.5-V to 14-V Input Voltage Range  
Wide-Output Voltage Adjust  
(0.9 V to 5.5 V)  
APPLICATIONS  
•
Telecommunications, Instrumentation,  
and General-Purpose Circuits  
•
•
•
•
Efficiencies Up to 94%  
On/Off Inhibit  
Undervoltage Lockout (UVLO)  
Output Overcurrent Protection  
(Nonlatching, Auto-Reset)  
•
•
Overtemperature Protection  
Ambient Temperature Range: –40°C to 85°C  
DESCRIPTION  
The PTH08000W is a highly integrated, low-cost switching regulator module that delivers up to 2.25 A of output  
current. The PTH08000W sources output current at a much higher efficiency than a TO-220 linear regulator IC,  
eliminating the need for a heatsink. The small size (0.75 inch × 0.5 inch) and flexible operation creates value for  
a variety of applications.  
The input voltage range of the PTH08000W is 4.5 V to 14 V, allowing operation from either a 5-V or 12-V input  
bus. Using state-of-the-art switched-mode power-conversion technology, the PTH08000W can step down to  
voltages as low as 0.9 V from a 5-V input bus, with less than 1 W of power dissipation. The output voltage can  
be adjusted to any voltage over the range, 0.9 V to 5.5 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. Operating  
features include an undervoltage lockout (UVLO), on/off inhibit, overcurrent protection, and overtemperature  
protection. Target applications include telecommunications, test and measurement applications, and high-end  
consumer products. This product is available in both through-hole and surface-mount package options, including  
tape and reel. The PTH08000W is compatible with TI's roadmap for RoHS and lead-free compliance.  
STANDARD APPLICATION  
V
O
1
2
3
4
6
Track  
PTH08000W  
(Top View)  
V
I
C *  
O
+
C *  
I
5
+
100 µF  
100 µF  
(Optional)  
(Required)  
R
#
Inhibit  
SET  
1%, 0.05 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.  
Auto-Track, POLA, 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.  
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