XRP7613 XRP7613 1.2A 36V Step Down High Brightness LED Driver 1.2A 36V Step Down High Brightness LED Driver November 2019 Rev. 1.2.1 GENERAL DESCRIPTION APPLICATIONS The XRP7613 is a non-synchronous step down General Lighting and Displays converter with integrated FET optimized to Architectural and Accent Lighting drive high power LEDs at up to 1.2A of continuous current. A wide 7.0V to 36V input Medical and Industrial Instrumentation voltage range allows for single supply Video Projectors operations from industry standard 12V, 18V or 24V power rails. FEATURES Based on a hysteretic PFM control scheme, the XRP7613 can operate at switching frequency 1.2A Continuous Output LED Current of up to 1MHz and allows for small external 150mA to 1.2A Programmable Range components selection while providing very fast 7V to 36V Single Rail Input Voltage transient response and achieving excellent efficiency. The output current is programmable PWM & Analog Dimming Capability from 150mA to 1.2A through an external Up to 40kHz Frequency sense resistor. LED Current Foldback Thermal Control Output current dimming is supported through Selectable Automatic Linear Dimming of an analog signal or PWM logic signal at up to LED Current with temperature 40kHz. A dynamic LED current thermal control further enhances the reliability of the end Shutdown Control application by linearly reducing the LED Built-in Soft Start current as temperature raises. Open LED, LED Short Circuit and Over An open LED, LED short circuit, over Temperature Protections temperature and under voltage lock out protection insures safe operations under RoHS Compliant Green/Halogen Free abnormal operating conditions. 8-pin Exposed Pad SOIC Package The XRP7613 is offered in RoHS compliant, green/halogen free 8-pin Exposed Pad SOIC package. TYPICAL APPLICATION DIAGRAM Fig. 1: XRP7613 Application Diagrams 1/13 Rev. 1.2.1 XRP7613 XRP7613 1.2A 36V Step Down High Brightness LED Driver 1.2A 36V Step Down High Brightness LED Driver ABSOLUTE MAXIMUM RATINGS OPERATING RATINGS These are stress ratings only and functional operation of Input Voltage Range VIN ...................................... 7V-36V the device at these ratings or any other above those Operating Temperature Range ................... -40C to 85C indicated in the operation sections of the specifications Thermal Resistance ...................................................... below is not implied. Exposure to absolute maximum 1 JA ............................................................... 60C/W rating conditions for extended periods of time may affect 1 ............................................................... 15C/W reliability. JC Input Voltage V .................................................... 40V IN Note 1: Package is placed on 2-layer PCB with 2 ounces ISEN Voltage ............................... (VIN+0.3V) to (VIN-5V) copper and 2 square inch, connected with 8 vias. EN/DIM Voltage ............................................ -0.3V to 5V Junction Temperature .......................................... 150C Storage Temperature .............................. -65C to 150C Lead Temperature (Soldering, 10 sec) ................... 260C ESD Rating (HBM - Human Body Model) .......................... All pins ................................................................ 2kV ELECTRICAL SPECIFICATIONS Specifications with standard type are for an Operating Ambient Temperature of T = T = 25C only limits applying over the J A full Operating Ambient Temperature range are denoted by a . Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TA = 25C, and are provided for reference purposes only. Unless otherwise indicated, V = 12V, L=47H, 1 x LED and I =330mA and T = 25C. IN LED A Parameter Min. Typ. Max. Units Conditions Output switching 0.5 1 mA EN/DIM floating, f=250kHz Quiescent Current Output not swithing 35 45 A EN/DIM<0.2V Mean Current Sense Threshold 95 100 105 mV Measured on ISEN pin with respect to VIN. Voltage ISEN Threshold Hysteresis -15 +15 % ILED Output Current Range 150 1200 mA VIN=12V Efficiency 93 % V =12V, V =7.2V, L=47F, I =330mA IN OUT LED Switch On Resistance R 0.5 N-MOSFET (PVDD2=5V) DS(ON) 1 5 A Switch Leakage Current Operating Frequency fSW 350 kHz EN/DIM floating, L=47F, ILED=330mA,1xLED Minimum Switch On Time 180 ns Minimum Switch OFF Time 280 ns VREF Voltage 2.5 2.54 V 2.46 VREF Output Current 250 A Recommended Duty Cycle 30 70 % Range at fSW MAX 6 VIN Rising Under Voltage Lock Out V Threshold 5.5 V Falling IN Maximum Dimming Frequency 40 kHz V EN/DIM Input Level Logic High 1.3 EN/DIM Input Level Analog 0.4 1.25 V EN/DIM Input Level Logic Low 0.2 V EN/DIM Shutdown Delay 16 ms EN/DIM Pull Up Current 3.7 A Thermal Shutdown 150 C Temperature Thermal Shutdown Hysteresis 30 C 0.4 R1=10k, RTH=1.91k Thermal Regulation Input V Level 0.28 R1=10k, RTH=1.265k 2/13 Rev. 1.2.1