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TPS2081DG4 Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce TPS2081DG4
Description  POWER-DISTRIBUTION SWITCHES
Download  26 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS2081DG4 Fiches technique(HTML) 1 Page - Texas Instruments

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1
FEATURES
DESCRIPTION
TPS2080, TPS2081, TPS2082 DUAL
TPS2085, TPS2086, TPS2087 QUAD
SLVS202B – SEPTEMBER 2000 – REVISED OCTOBER 2007
www.ti.com
POWER-DISTRIBUTION SWITCHES
• 80-mΩ High-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
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-m
Ω N-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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