XR46084 Three Terminal Current Controller Description FEATURES The XR46084 is a Three Terminal Current Controller (TTCC) for System regulating the current flowing through an LED string. All solid state components No electrolytic capacitor required The application of the XR46084 is configured in parallel with an LED Compact size to minimize mechanical string. The XR46084 can work as voltage controlled current source, cost current regulator, or cut-off. It is suitable for the applications adopting Driver-on-board and chip-on-board periodical AC voltage source. available which minimize process flow and assembly cost The layout is very flexible allowing for PCB designs in any conceivable High PF and low THD performance shape. Whether high bay, downlights, or unique architectural shapes High efficiency achieved the XR46084 can provide an excellent LED lighting solution. Flexible PCB layout style Wide range of LED forward voltage selection Distributed heat to several chips Typical Application TRIAC dimmable Chip 88V input sustaining voltage + < 3V dropout voltage for up to 150mA I 120V LED AC regulating current LEDS1 U0 APPLICATIONS XR46084-ADJ BD LED Lighting Applications Downlight R0 High bay Specialty Architectural LEDS2 U1 XR46084-ADJ R4 R1 R5 LEDS3 U2 XR46084-ADJ Rectified R2 V AC Q1 XR46000 t I ZD LED U3 XR46084-ADJ R3 t Figure 1. Typical Application Figure 2. Typical Performance REV1C 1/14 K A K A K A K A MS2 NC MS2 NC MS2 NC MS2 NC MS1 CS MS1 CS MS1 CS MS1 CSXR46084 Absolute Maximum Ratings Operating Conditions (1) Stresses beyond the limits listed below may cause Regulating current (with adequate heat sinking) , permanent damage to the device. Exposure to any Absolute I .............................................................................130mA AK Maximum Rating condition for extended periods may affect (1) Input voltage , V ..............................................3V to 80V AK device reliability and lifetime. Maximum junction temperature, T ............................ 150C J Sustaining voltage A to K ................................ -0.3V to 88V Operating free-air temperature range, T .... -40C to 100C A Sustaining voltage CS, MS1, MS2 to K ............. -0.3V to 1V NOTE: 1. Due to thermal dissipation consideration, the maximum LED Vf in parallel should Regulating current ....................................................150mA decrease with the regulating current. Maximum operating junction temperature, T ............ 165C J Storage temperature range ......................... -55C to 150C Lead temperature (soldering, 10 seconds) ................ 260C NOTE: 1. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. 2. All parameters having Min/Max specifications are guaranteed. Typical values are for reference purpose only. 3. Unless otherwise noted, all tests are pulsed tests at the specified temperature, therefore: T = T = T . J C A REV1C 2/14