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TPS2551-Q1

更新时间： 2024-11-20 11:58:23
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德州仪器 - TI 开关
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26页 1710K
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ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCH

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TPS2551-Q1 数据手册

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TPS2551-Q1  
www.ti.com ...................................................................................................................................................................................................... SLVS850–JUNE 2008  
ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCH  
1
FEATURES  
DESCRIPTION  
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Qualified for Automotive Applications  
Adjustable Current-Limit: 100 mA to 1100 mA  
Fast Overcurrent Response: 2 µs (Typ)  
85-mΩ High-Side MOSFET  
The TPS2551 power-distribution switch is intended  
for applications in which heavy capacitive loads and  
short circuits are likely to be encountered,  
incorporating a 100-mΩ, N-channel MOSFET in a  
single package. The current-limit threshold is user  
adjustable between 100 mA and 1.1 A via an  
external resistor. The power-switch rise and fall times  
are controlled to minimize current surges during  
switching.  
Reverse Input-Output Voltage Protection  
Operating Range: 2.5 V to 6.5 V  
Deglitched Fault Report  
1-µA Maximum Standby Supply Current  
Junction Temperature Range: –40°C to 125°C  
Built-in Soft-Start  
The device limits the output current to a desired level  
by switching into a constant-current mode when the  
output load exceeds the current-limit threshold or a  
short is present. An internal reverse-voltage detection  
comparator disables the power-switch in the event  
that the output voltage is driven higher than the input  
to protect devices on the input side of the switch. The  
FAULT logic output asserts low during both  
overcurrent and reverse-voltage conditions.  
15-kV ESD Protection (With External  
Capacitance)  
APPLICATIONS  
•
•
•
•
•
USB Ports/Hubs  
Cell Phones  
Laptops  
Heavy Capacitive Loads  
Reverse-Voltage Protection  
USB Data  
0.1 µF  
USB  
Port  
IN  
OUT  
5-V USB Input  
RFAULT  
100 kW  
DBV PACKAGE  
(TOP VIEW)  
120 µF *  
1
2
3
6
5
4
IN  
GND  
EN  
OUT  
ILIM  
FAULT  
FAULT  
EN  
ILIM  
FAULT Signal  
RILIM  
15 kW  
Control Signal  
GND  
GND  
* USB requirement that downstream-facing ports are bypassed with at least 120 µF per hub  
Figure 1. Typical Application as USB Power Switch  
GENERAL SWITCH CATALOG  
33 mW, Single  
80 mW, Single  
80 mW, Triple  
80 mW, Dual  
80 mW, Dual  
80 mW, Quad  
80 mW, Quad  
TPS201xA 0.2 A to 2 A  
0.2 A to 2 A  
0.2 A to 2 A  
TPS2014  
TPS2015  
TPS2041B 500 mA  
TPS2051B 500 mA  
TPS2045A 250 mA  
TPS2049 100 mA  
TPS2055A 250 mA  
TPS2061  
TPS2065  
TPS2068  
TPS2069  
600 mA  
1 A  
TPS202x  
TPS203x  
TPS2042B 500 mA  
TPS2052B 500 mA  
TPS2046B 250 mA  
TPS2080 500 mA  
TPS2081 500 mA  
TPS2082 500 mA  
TPS2090 250 mA  
TPS2091 250 mA  
TPS2092 250 mA  
TPS2043B 500 mA  
TPS2053B 500 mA  
TPS2047B 250 mA  
TPS2057A 250 mA  
TPS2056  
TPS2062  
TPS2066  
TPS2060  
TPS2064  
250 mA  
1 A  
1 A  
1.5 A  
1.5 A  
TPS2044B 500 mA  
TPS2054B 500 mA  
TPS2048A 250 mA  
TPS2085 500 mA  
TPS2086 500 mA  
TPS2087 500 mA  
TPS2095 250 mA  
TPS2096 250 mA  
TPS2097 250 mA  
1 A  
1 A  
1.5 A  
1.5 A  
TPS2063  
TPS2067  
1 A  
1 A  
TPS2058  
250 mA  
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.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2008, Texas Instruments Incorporated  
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