TI hot-swap managers offer flexible protection against current in-rush for voltages from 3 V to 20 V

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Bangalore , Feb. 18, 2009 - Texas Instruments Incorporated (TI) (NYSE:TXN) introduced three new hot-swap managers that help protect against over currents for voltage rails between 3 V and 20 V and an operating current of up to 5 A. The TPS2420 comes in a tiny 16-pin QFN package and the TPS2421-1 and TPS2421-2 come in 8-pin SOIC packages and offer more than twice the current throughput of existing hot-swap managers with integrated FETs in the same voltage range. For product details see: www.ti.com/tps2420-pr.

The TPS2420 family supports applications such as disk drive arrays, network clients, industrial monitoring devices and communications systems. The devices require up to 70 percent fewer external components than competitive products to implement a complete solution. Each device can operate across the entire operating voltage range with only the timing capacitor and resistor-set current thresholds.

Key Features

Key Benefits

Input voltage range from 3 V to 20 V
Integrated FET and current sense element
Onboard FET RDS (on) of 20mΩ
Fault threshold adjustable from (0-5A)
Independent current-limit threshold-TPS2420
Power limiting with fast overload protection
Programmable fault timer
Analog current monitor output-TPS2420
Fault and power good output
Selectable latch or auto-retry

Common product for multiple required system voltage rails
Reduces board space and complexity
Improves overall system efficiency
Current range fits many applications
Allows for either a fixed current or additional load current for set period – TPS2420
Internal power limiting keeps FET in safe operating area
Eliminates nuisance shutdowns
Allows external A/D to monitor current – TPS2420
Useful for system control and to enable downstream DC/DC converters
Fault behavior tailored for system need

Find out more about TI’s hot-swap manager portfolio by visiting the links below:

TPS2420 evaluation modules and samples: www.ti.com/tps2420-pr
TI’s complete power management portfolio: www.power.ti.com
TI’s hot-swap E2E online community: http://community.ti.com/forums/102.aspx

About Texas Instruments:

Texas Instruments (NYSE: TXN) helps customers solve problems and develop new electronics that make the world smarter, healthier, safer, greener and more fun. A global semiconductor company, TI innovates through manufacturing, design and sales operations in more than 25 countries. For more information, go to www.ti.com.