Versatile LED controller can support step-up or step-down driver topologies

The Texas Instruments TPS92691 multi-topology LED Driver is now stocked by Mouser. The versatile LED controller can support a range of step-up or step-down driver topologies. The device implements a fixed-frequency peak current mode control technique with programmable switching frequency, slope compensation, and soft-start timing. It incorporates a high voltage (65V) rail-to-rail current sense amplifier that can directly measure LED current using either a high-side or a low-side series sense resistor. The amplifier is designed to achieve low input offset voltage and attain better than ±3% LED current accuracy. This is done over a junction temperature range of 25C to 140C and output common-mode voltage range of 0 to 60V. Applications include architectural and general lighting applications.