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TPS2087DG4 PDF预览

TPS2087DG4

更新时间: 2024-09-21 12:02:35
品牌 Logo 应用领域
德州仪器 - TI 开关
页数 文件大小 规格书
26页 1073K
描述
POWER-DISTRIBUTION SWITCHES

TPS2087DG4 数据手册

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TPS2080, TPS2081, TPS2082 DUAL  
TPS2085, TPS2086, TPS2087 QUAD  
www.ti.com  
SLVS202BSEPTEMBER 2000REVISED OCTOBER 2007  
POWER-DISTRIBUTION SWITCHES  
1
FEATURES  
80-mHigh-Side MOSFET Switch  
500 mA Continuous Current per Channel  
Independent Thermal and Short-Circuit  
Protection With Overcurrent Logic Output  
Operating Range: 2.7-V to 5.5-V  
CMOS- and TTL-Compatible Enable Inputs  
2.5-ms Typical Rise Time  
Undervoltage Lockout  
10 μA Maximum Standby Supply Current  
Bidirectional Switch  
Available in 8-Pin and 16-Pin SOIC Packages  
Ambient Temperature Range, 0°C to 85°C  
ESD Protection  
DESCRIPTION  
The TPS2080, TPS2081, and TPS2082 dual and the  
TPS2085,  
TPS2086  
and  
TPS2087  
quad  
power-distribution switches are intended for  
applications where heavy capacitive loads and short  
circuits are likely to be encountered.  
The TPS208x devices incorporate 80-mN-channel MOSFET high-side power switches for power-distribution  
systems that require multiple power switches in a single package. Each switch is controlled by an independent  
logic enable input. Gate drive is provided by an internal charge pump designed to control the power-switch rise  
times and fall times to minimize current surges during switching. The charge pump requires no external  
components and allows operation from supplies as low as 2.7 V.  
When the output load exceeds the current-limit threshold or a short is present, the TPS208x limits the output  
current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low.  
When continuous heavy overloads and short circuits increase the power dissipation in the switch causing the  
junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a  
thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch  
remains off until valid input voltage is present. The TPS208x devices are designed to current limit at 1.0-A load.  
1
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 © 2000–2007, 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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