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TPS2024DR

更新时间： 2024-11-29 12:02:35
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德州仪器 - TI 开关
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29页 812K
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POWER-DISTRIBUTION SWITCHES

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TPS2024DR 数据手册

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TPS2020, TPS2021  
TPS2022, TPS2023, TPS2024  
www.ti.com  
SLVS175C–DECEMBER 1998–REVISED SEPTEMBER 2007  
POWER-DISTRIBUTION SWITCHES  
1
FEATURES  
•
UL Listed - File No. E169910  
•
33-mΩ (5-V Input) High-Side MOSFET Switch  
Short-Circuit and Thermal Protection  
Overcurrent Logic Output  
D OR P PACKAGE  
(TOP VIEW)  
•
•
•
•
•
•
•
•
•
•
•
GND  
IN  
OUT  
OUT  
OUT  
OC  
1
2
3
4
8
7
6
5
Operating Range . . . 2.7 V to 5.5 V  
Logic-Level Enable Input  
IN  
Typical Rise Time . . . 6.1 ms  
EN  
Undervoltage Lockout  
Maximum Standby Supply Current . . . 10 μA  
No Drain-Source Back-Gate Diode  
Available in 8-Pin SOIC and PDIP Packages  
Ambient Temperature Range, –40°C to 85°C  
2-kV Human-Body-Model, 200-V  
Machine-Model ESD Protection  
DESCRIPTION  
The TPS202x family of power distribution switches is intended for applications where heavy capacitive loads and  
short circuits are likely to be encountered. These devices are 50-mΩ N-channel MOSFET high-side power  
switches. The switch is controlled by a logic enable compatible with 5-V logic and 3-V logic. 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 TPS202x 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.  
The TPS202x devices differ only in short-circuit current threshold. The TPS2020 limits at 0.3-A load, the  
TPS2021 at 0.9-A load, the TPS2022 at 1.5-A load, the TPS2023 at 2.2-A load, and the TPS2024 at 3-A load  
(see Available Options). The TPS202x is available in an 8-pin small-outline integrated-circuit (SOIC) package  
and in an 8-pin dual in-line package (DIP) and operates over a junction temperature range of –40°C to 125°C.  
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 © 1998–2007, 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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