XR46203IHBTR

XR46203 Product Brief Two-Step LED Current Controller with Line Regulation Compensation Description The XR46203 is a two-step LED current controller with line regulation compensation for operating over a wide alternative current (AC) voltage source range. It can drive an external N-channel power MOSFET to regulate the current flowing through a high voltage (HV) LED string. The XR46203 works as a constant current sink with linear type over voltage protection (OVP), linear type over temperature protection (OTP), and line regulation compensation. It is suitable for applications with a rectified AC voltage source. The PCB design can be very compact to meet various shape requirements. It is especially suitable for replacing incandescent light bulb and linear type fluorescent lamps. Typical Application ILED + VAC – RBL1 BD RA1 RA2 RB RIN1 RBL2 LEDS1 RIN2 CLR VIN GATE NC SOURCE VL NC GND CS U1 XR46203 Q1 (NMOS) XR46000 LEDS2 R1 FEATURES ■■ Device Two current step control from single device Excellent system power regulation over AC line variation range 6V to 78V chip supply voltage range Over temperature protection Over voltage protection 3mm x 3mm DFN-8L package ■■ System Single board LED lighting solution available All solid state components No electrolytic capacitor or MOV required Scalable architecture allows optimization of performance vs. cost Driver-on-board and chip-on-board design solution available which minimize process flow and assembly cost High PF and low THD performance Flexible PCB layout options TRIAC dimmable APPLICATIONS ■■ LED Lighting Applications Downlight High bay Specialty Architectural Pin Configuration VIN 1 8 GATE NC 2 7 Source VL 3 6 NC GND 4 5 CS 3mm x 3mm DFN-8L 1/2 XR46203 Product Brief Ordering Information(1) Part Number XR46203IHBTR Operating Temperature Range Lead-Free Package Packaging Method -40°C to 85°C Yes(2) DFN8 3mm x 3mm Tape and reel NOTE: 1. Refer to www.exar.com/XR46203 for most up-to-date Ordering Information. 2. Visit www.exar.com for additional information on Environmental Rating. Please contact LEDtechsupport@exar.com to request a complete datasheet. www.exar.com 48760 Kato Road Fremont, CA 94538 USA Tel.: +1 (510) 668-7000 Fax: +1 (510) 668-7001 Email: LEDtechsupport@exar.com Exar Corporation reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. Exar Corporation conveys no license under any patent or other right and makes no representation that the circuits are free of patent infringement. While the information in this publication has been carefully checked, no responsibility, however, is assumed for inaccuracies. Exar Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless Exar Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; (c) potential liability of Exar Corporation is adequately protected under the circumstances. Reproduction, in part or whole, without the prior written consent of Exar Corporation is prohibited. Exar, XR and the XR logo are registered trademarks of Exar Corporation. All other trademarks are the property of their respective owners. ©2016 Exar Corporation XR46203_PB_093016 2/2