TPS92551EVM

TPS92551, TPS92551EVM www.ti.com SNVS805C – MAY 2012 – REVISED MAY 2013 450mA 23W Constant Current Buck LED Driver Micro-Module Check for Samples: TPS92551, TPS92551EVM FEATURES 1 2 Integrated All Power Components Including the Power Inductor Wide Input Voltage Range : 4.5V - 60V Constant Switching Frequency at 800kHz High Contrast Ratio (Minimum Dimming Current Pulse width < 16µs) Drives up to 16 LEDs in series at 60V input ±3.5% Typical LED Current Accuracy LED Current Adjustable from 300mA to 450mA Up to 95% Efficiency TPS92551 Modules can be Connected in Parallel for Higher Current Operation Input Under-Voltage Lock-Out (UVLO) Compatible with Ceramic and Low ESR Capacitors Low Electro Magnetic Interference (EMI) Complies with EN55015 Standard (1) LED Open and Short Circuit Protections Thermal Shutdown and RoHS Compliant -40˚C to +125˚C Junction Temperature Range DESCRIPTION The TPS92551 Constant Current Buck LED Driver Micro-Module drives maximum 450mA LED current up to 16 LEDs in a single string (maximum 23W). It integrates all the power components including the power inductor. The TPS92551 provides a full turnkey, highly efficient solution for wide range of single string LED lighting applications with up to 95% power efficiency. It accepts an input voltage ranging from 4.5V to 60V and delivers a 350mA LED current as default. The LED current is adjustable from 300mA to 450mA by charging a single external resistor. The module operates at ...