Texas Instruments TPS92511
The TPS92511 is an easy to use 65V constant current buck converter for driving a single LED string with current up to 0.5A and efficiency up to 95%. The TPS92511 provides a wide input voltage range from 4.5V to 65V.FEATURES
●1 Wide Input Voltage Range: 4.5 V to 65 V● Requires NO External Current Sensing Resistor
● Requires NO External Loop Compensation
● Ease of Use, Needs Minimum 5 Components
● 1000:1 Contrast Ratio Feasible
● Single Layer PCB Feasible
● Can Work as High Voltage Buck Regulators
● Can Work as Linear Current Shunt Regulators
● Integrated Low-side N-channel MOSFET
● LED Current Programmable up to 0.5 A
● Typically ±3.6% LED Current Accuracy
● Switching Frequency Programmable From 50 kHz to 500 kHz
● Current Limit Protection
● VCC Under-voltage Lock-out
● Thermal Shutdown Protection
● Support Analog Dimming and Thermal Foldback
● Power Enhanced SOIC-8 Exposed Thermal Pad Package (HSOP-8) 2
APPLICATIONS
● High Power LED Driver● Architectural Lighting
● Office Troffer
● Automotive Lighting
● MR-16 LED Lamp CVCC Simplified Application TPS92511 VIN VCC PGND VIN LED string ILED LX D1 L1 RIADJ IADJ GND DIM PWM dimming signal FS RFS 3
DESCRIPTION
Only 5 external components are required f...