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TPS2051

更新时间： 2024-09-19 22:42:03
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德州仪器 - TI 开关
页数 文件大小 规格书
23页 417K
描述
POWER-DISTRIBUTION SWITCHES

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TPS2051 数据手册

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TPS2041, TPS2051  
POWER-DISTRIBUTION SWITCHES  
SLVS172A –AUGUST 1998 – REVISED APRIL 1999  
135-mΩ -Maximum (5-V Input) High-Side  
MOSFET Switch  
TPS2041  
D OR P PACKAGE  
(TOP VIEW)  
500 mA Continuous Current  
GND  
IN  
OUT  
OUT  
OUT  
OC  
1
2
3
4
8
7
6
5
Short-Circuit and Thermal Protection With  
Overcurrent Logic Output  
IN  
Operating Range . . . 2.7 V to 5.5 V  
Logic-Level Enable Input  
EN  
2.5-ms Typical Rise Time  
TPS2051  
D OR P PACKAGE  
(TOP VIEW)  
Undervoltage Lockout  
10 µA Maximum Standby Supply Current  
Bidirectional Switch  
GND  
IN  
OUT  
OUT  
OUT  
OC  
1
2
3
4
8
7
6
5
Available in 8-pin SOIC and PDIP Packages  
Ambient Temperature Range, –40°C to 85°C  
IN  
EN  
2-kV Human-Body-Model, 200-V  
Machine-Model ESD Protection  
UL Listed – File No. E169910  
description  
The TPS2041 and TPS2051 power distribution switches are intended for applications where heavy capacitive  
loads and short circuits are likely to be encountered. The TPS2041 and the TPS2051 are 135-mΩ N-channel  
MOSFET high-side power switches. Each switch is controlled by a logic enable compatible with 5-V and 3-V  
logic. Gate drive is provided by an internal charge pump that controls 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 TPS2041 and TPS2051 limit  
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,  
causingthejunctiontemperaturetorise, athermalprotectioncircuitshutsofftheswitchinovercurrenttoprevent  
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 TPS2041 and TPS2051 are designed to limit at 0.9-A load. These power distribution switches are available  
in 8-pin small-outline integrated circuit (SOIC) and 8-pin plastic dual-in-line packages (PDIP) and operate over  
an ambient temperature range of –40°C to 85°C.  
AVAILABLE OPTIONS  
RECOMMENDED  
MAXIMUM CONTINUOUS  
LOAD CURRENT  
(A)  
PACKAGED DEVICES  
TYPICAL SHORT-CIRCUIT  
CURRENT LIMIT AT 25°C  
(A)  
T
A
ENABLE  
SOIC  
PDIP  
(P)  
†
(D)  
–40°C to 85°C Active low  
–40°C to 85°C Active high  
0.5  
0.5  
0.9  
0.9  
TPS2041D TPS2041P  
TPS2051D TPS2051P  
†
The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2041DR)  
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.  
Copyright 1999, Texas Instruments Incorporated  
This document contains information on products in more than one phase  
of development. The status of each device is indicated on the page(s)  
specifying its electrical characteristics.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...23

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TPS2051 替代型号

型号 品牌 替代类型 描述 数据表
TPS2051C TI

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TPS2051B TI

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TPS2051BD TI

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TPS2051BDBV TI

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TPS2051BDBVR TI

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 		CURRENT-LIMITED, POWER-DISTRIBUTION SWITCHES
TPS2051BDBVRG4 TI

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