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SN105125_12

更新时间： 2024-01-11 12:11:15
品牌 Logo 应用领域
德州仪器 - TI 稳压器
页数 文件大小 规格书
15页 533K
描述
150-mA LOW DROPOUT REGULATOR WITH POK

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SN105125_12 数据手册

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SLVS418 − JANUARY 2002  
DBV PACKAGE  
(TOP VIEW)  
features  
D
Low Dropout Voltage Regulator, 1.2-V  
150-mA Load Current Capability  
Power Okay (POK) Function  
1
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5
V
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GND  
EN  
Load Independent, Low Ground  
Current,150-µA  
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POK  
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Current Limiting  
Thermal Shutdown  
Low Sleep State Current (Off Mode)  
Fast Transient Response  
Low Variation Due to Load and Line  
Regulation  
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Output Stable With Low ESR Capacitors  
TTL Logic Controlled Enable Input  
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applications  
D
Processor Powerup Sequencing  
D
Palmtop Computers, Laptops, and  
Notebooks  
description  
The SN105125 is a low dropout voltage regulator with an output tolerance of 2% over the operating range. The  
device is optimized for low noise applications and has a low quiescent current (enable <0.8 V). The device has  
a low dropout voltage at full load (150 mA). The power okay function monitors the output voltage and indicates  
when an error occurs in the system (active low). In the event of an output fault such as overcurrent, thermal  
shutdown, or dropout, the power okay output is pulled low (open drain).  
The SN105125 has a fast transient response recovery capability in the event of load transition from heavy load  
to light load. The device also minimizes overshoot during this condition. During power down, the output  
capacitor and load are de-energized through the internal active shutdown clamp, which is turned on when the  
device is disabled.  
The SN105125 requires a small output capacitor for stability with low ESR. An input capacitor is not required  
unless the bulk ac capacitor is placed away from the device or the power supply is a battery. In this situation,  
a 1-µF capacitor is recommended for the application. Low ESR ceramic capacitors may be used with the device  
to reduce board space in power applications, a key concern in hand-held wireless devices.  
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.  
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Copyright 2002, Texas Instruments Incorporated  
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...15

中文翻译

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