LED driver produces regulated current output

The TPS40211 allows designers to efficiently manage LED lighting, industrial control and battery-powered systems.

Texas Instruments has released a wide-input-voltage nonsynchronous boost controller, intended for applications where the output is a regulated current instead of a regulated voltage.

The TPS40211 allows designers to efficiently manage LED lighting, industrial control and battery-powered systems.

The TPS40211 runs from 4.5 to 52V supplies and efficiently drives high-power LEDs when the input voltage is less than the voltage to turn on the LEDs.

The LED driver is designed to power multiple 1-5W high-brightness LEDs in a series, and features a programmable closed soft start, overcurrent protection with automatic retry and a programmable oscillator frequency.

The device's fixed frequency current mode control provides improved transient response and simplified loop compensation.

Designers have the flexibility to use the TPS40211 for boost, flyback, SEPIC and various LED driver topologies.

The TPS40211 is available today in volume from TI and its authorised distributors.

The device is offered in a 10-pin PowerPAD and a 10-pin SON package, and suggested resale price is US $1.40 in 100-unit quantities.

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