TPS92551 Datasheet | Texas Instruments

FEATURES - 2 Integrated All Power ponents Including the Power Inductor - Wide Input Voltage Range : 4.5V - 60V - Constant Switching Frequency at 800k Hz - 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 300m A to 450m A - Up to 95% Efficiency - TPS92551 Modules can be Connected in Parallel for Higher Current Operation - Input Under-Voltage Lock-Out (UVLO) - patible with Ceramic and Low ESR Capacitors - Low Electro Magnetic Interference (EMI) plies with EN55015 Standard (1) - LED Open and Short Circuit Protections - Thermal Shutdown and Ro HS pliant - -40˚C to +125˚C Junction Temperature Range DESCRIPTION The TPS92551 Constant Current Buck LED Driver Micro-Module drives maximum 450m A LED current up to 16 LEDs in a single string (maximum 23W). It integrates all the power ponents 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 350m A LED current as default. The LED current is adjustable from 300m A to 450m A by charging a single external resistor. The module operates at constant switching frequency (800k Hz) with low Electro Magnetic Interference(EMI) plying with EN55015 standard. The module has fast control loop to realize fine LED current pulse yielding 256- step PWM dimming resolution at 240Hz for general lighting. Protection features include thermal shutdown, input under-voltage lockout, LED open-circuit and short-circuit protections. The TPS92551 Micro-Module is available in 7-pin PFM power package. APPLICATIONS - General Lighting, Desk Lamps - Cabinet Lamps - Decorative Lamps - Street Lamps - Architecture Lighting, Recess Lights - Spot Lights - Underwater Lights PACKAGE HIGHLIGHTS - 7-Lead Easy-to-Use Package (Similar to TO263) - Single...