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TPS2049DR датащи(PDF) 1 Page - Texas Instruments

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номер детали TPS2049DR
подробное описание детали  SINGLE-CHANNEL 100 mA POWER SWITCH
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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TPS2049DR датащи(HTML) 1 Page - Texas Instruments

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FEATURES
IN
GND
IN
EN
OUT
OUT
OUT
OC
DESCRIPTION
TPS2049
SLVS713 – OCTOBER 2006
SINGLE-CHANNEL 100 mA POWER SWITCH
SOIC-8 Package
100-mA Continuous Current
Ambient Temperature Range: –40
°C to 85°C
600-m
Ω High-Side MOSFET
2
µS Response Time to Short Circuit
Thermal and Short-Circuit Protection
Operating Range: 2.7 V to 5.5 V
0.6-ms Typical Rise Time
Undervoltage Lockout
Deglitched Fault Report (OC)
43
µA Quiescent Supply Current
1-
µA Maximum Standby Supply Current
The TPS2049 power-distribution switch is intended for applications where heavy capacitive loads and short
circuits are likely to be encountered. This device incorporates a 600-m
Ω N-channel MOSFET power switch for
power-distribution systems that require only one power distribution path. The switch is controlled by a 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 2.7V.
When the output load exceeds the current-limit threshold or a short is present, the device limits the output
current to a safe level by switching into a constant-current mode, pulling the overcurrent (OC) 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. This power-distribution switch is designed to set current limit at
150mA typically.
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 © 2006, 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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