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TPS2052C

更新时间： 2024-11-11 11:06:27
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德州仪器 - TI 开关电源开关电源管理电路电源电路
页数 文件大小 规格书
26页 589K
描述
高电平有效且具有输出放电和反向阻断功能的双通道 0.5A 负载 4.5-5.5V、70mΩ USB 电源开关

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TPS2052C 数据手册

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TPS2042, TPS2052  
DUAL POWER-DISTRIBUTION SWITCHES  
SLVS173A – AUGUST 1998 – REVISED APRIL 1999  
135-mΩ -Maximum (5-V Input) High-Side  
MOSFET Switch  
TPS2042  
D OR P PACKAGE  
(TOP VIEW)  
500 mA Continuous Current per Channel  
GND  
IN  
OC1  
1
2
3
4
8
7
6
5
Short-Circuit and Thermal Protection With  
Overcurrent Logic Output  
OUT1  
OUT2  
OC2  
EN1  
EN2  
Operating Range . . . 2.7-V to 5.5-V  
Logic-Level Enable Input  
2.5-ms Typical Rise Time  
TPS2052  
D OR P PACKAGE  
(TOP VIEW)  
Undervoltage Lockout  
10 µA Maximum Standby Supply Current  
Bidirectional Switch  
GND  
IN  
OC1  
1
2
3
4
8
7
6
5
OUT1  
OUT2  
OC2  
Available in 8-pin SOIC and PDIP Packages  
Ambient Temperature Range, –40°C to 85°C  
EN1  
EN2  
2-kV Human-Body-Model, 200-V  
Machine-Model ESD Protection  
UL Listed – File No. E169910  
description  
The TPS2042 and TPS2052 dual power distribution switches are intended for applications where heavy  
capacitive loads and short circuits are likely to be encountered. The TPS2042 and the TPS2052 incorporate  
in single packages two 135-mΩ N-channel MOSFET high-side power switches for power distribution systems  
that require multiple power switches. Each switch is controlled by a logic enable that is 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 TPS2042 and TPS2052 limit  
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 TPS2042 and TPS2052 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)  
TYPICAL  
SHORT-CIRCUIT CURRENT  
LIMIT AT 25°C  
PACKAGED DEVICES  
T
A
ENABLE  
SOIC  
PDIP  
(P)  
†
(D)  
(A)  
–40°C to 85°C Active low  
–40°C to 85°C Active high  
0.5  
0.5  
0.9  
0.9  
TPS2042D TPS2042P  
TPS2052D TPS2052P  
†
The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2042DR)  
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  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...26

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TPS2052C 替代型号

型号 品牌 替代类型 描述 数据表
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