MBI1828 Datasheet | Macroblock

Features z Maximum 50V output sustaining voltage z 8 constant-current output channels z Adjustable 5 - 60m A output current per channel through an external resistor z Constant output current invariant to load voltage change z Excellent output current accuracy: between channels: <±3% (max.), and between ICs: <±6% (max.) z Open-circuit detection mode to detect LED errors z Integrated voltage regulator for 8 - 40V supply voltage z Voltage feedback for DC/DC controller z Package Type: “Pb-free & Green” package with thermal pad Current Accuracy Between Channels Between ICs < ±3% < ±6% Conditions IOUT = 5 ~ 60m A Thin Shrink SOP GTS: TSSOP16-173-0.65 Quad Flat No-Lead GFN: QFN24-4- 4-0.5 Product Description MBI1828 is an instant On/Off LED driver for lighting applications and exploits Precision Drive™ technology to enhance its output characteristics. At MBI1828 output stage, 8 regulated current ports are designed to provide uniform and constant current sinks for driving LEDs within a large range of VF variations. MBI1828 provides users 8-channel constant current ports to match LEDs with equal current. Users may adjust the output current from 5m A to 60m A through an external resistor, Rext, which gives users flexibility in controlling the light intensity of LEDs. In addition, users can precisely adjust LED brightness from 0% to 100% via output enable (OE) with Pulse Width Modulation. Additionally, to ensure the system reliability, MBI1828 is built with thermal pad which enhances the heat dissipation. Applications z Automotive lighting z Channel letter z Decorative LED lighting z LCD monitor ©Macroblock, Inc. 2009 Floor 6-4, No. 18, Pu-Ting Rd., Hsinchu, Taiwan 30077, ROC. TEL: +886-3-579-0068, FAX: +886-3-579-7534, E-mail: info@mblock..tw - 1 - September. 2009, V 1.01 8-Channel All-Ways-On TM Constant-Current LED Driver Functional Diagram VDD TH R-EXT 4.7V Linear Regulator VCCA VCCD OUT0 Vmin X 1.5625 Over Temperature Flag Channel Disable...