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TPS92511

Texas Instruments
Part Number TPS92511
Manufacturer Texas Instruments
Description 65-V Common Anode Constant Current Buck LED Driver
Published Aug 19, 2019
Detailed Description Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS92511 SNVS901A – MARCH 2014...
Datasheet PDF File TPS92511 PDF File

TPS92511
TPS92511

Overview
Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS92511 SNVS901A – MARCH 2014 – REVISED MAY 2014 TPS92511 500-mA, 65-V Common Anode Constant Current Buck LED Driver Without External Current Sensing Resistor 1 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 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%.
Only 5 external components are required for basic operation and single layer PCB layout is feasible because of the integration of a N-MOSFET, no external current sensing resistor, no external compensation and the proper terminal assignment.
A high-value external resistor programs the LED current so that fine tuning of the LED current can be achieved.
Another high-value external resistor programs a constant switching frequency from 50kHz to 500kHz.
EMI design becomes easier as a result of constant switching frequency.
The TPS92511 provides a wide input voltage range from 4.
5V to 65V.
By adding simple external circuits, ...


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