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TPS2551

更新时间: 2024-11-09 04:27:35
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德州仪器 - TI 开关
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28页 1948K
描述
ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

TPS2551 数据手册

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TPS2550  
TPS2551  
www.ti.com  
SLVS736FEBRUARY 2008  
ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES  
1
FEATURES  
DESCRIPTION  
Adjustable Current-Limit, 100 mA–1100 mA  
Fast Overcurrent Response - 2 µS Typical  
85-mHigh-Side MOSFET (DBV Package)  
Reverse Input-Output Voltage Protection  
Operating Range: 2.5 V to 6.5 V  
The TPS2550/51 power-distribution switch is  
intended for applications where heavy capacitive  
loads and short-circuits are likely to be encountered,  
incorporating a 100-m, 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.  
Deglitched Fault Report  
1-µA Maximum Standby Supply Current  
Ambient Temperature Range: –40°C to 85°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  
TPS2550/51  
USB Data  
0.1 mF  
5 V USB  
INPUT  
USB  
Port  
IN  
OUT  
TPS2550/TPS2551  
DRV PACKAGE  
(TOP VIEW)  
TPS2550/TPS2551  
DBV PACKAGE  
(TOP VIEW)  
RFAULT  
100 kW  
120 mF *  
1
2
3
6
5
4
IN  
OUT  
ILIM  
IN  
OUT  
1
2
3
6
5
4
ILIM  
GND  
EN  
GND  
EN  
FAULT  
EN  
ILIM  
FAULT Signal  
FAULT  
FAULT  
RILIM  
15 kW  
EN = Active Low for the TPS2550  
EN = Active High for the TPS2551  
Control Signal  
GND  
Power Pad  
* USB Requirement that downstream-facing ports  
are bypassed with at least 120 mF 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  

TPS2551 替代型号

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