MP2489 Datasheet (data sheet) PDF





MP2489 Datasheet, Step Down White LED Driver

MP2489   MP2489  

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The Future of Analog IC Technology DESCR IPTION The MP2489 is a high efficiency step-down converter designed in continu ous current mode for driving the high b rightness Light Emitting Diodes (LED) f rom wide input voltage 6V–60V. The MP 2489 employs hysteretic control archite cture to regulate a high accuracy LED c urrent, which is measured through an ex ternal high-side current sensing resist or. Moreover, this control scheme provi des optimized circuit stabilization and very quick response time without the l oop compensation. Its low 202mV average feedback voltage reduces power loss an d improves the converter efficiency. Th e MP2489 implements PWM and

MP2489 Datasheet, Step Down White LED Driver

MP2489   MP2489  
analog dimming together with DIM pin. T he MP2489 includes thermal overload pro tection preventing damage in the event of an output overload. The MP2489 is av ailable in small QFN6 (3x 3mm), TSOT23- 5 and SOIC8E packages. MP2489 Step Dow n White LED Driver with Wide 6V–60V I nput Voltage FEATURES • Internal 65V MOSFET • Wide 6V to 60V Input Range ≥1A Output Current • High Effici ency (>95%) • Hysteresis Control • PWM & Analog Dimming • 1000:1 PWM Dim ming Resolution • Thermal Shutdown Inherent Open LED Protection • Shor t LED Protection • Available in TSOT2 3-5, QFN6(3x 3mm) and SOIC8E Packages A PPLICATIONS • Low Voltage Halogen Rep lacement • Low Voltage General Illumi nation • Automotive/Decorative LED Li ghting • Signs/Emergency Lighting • LED Backlighting All MPS parts are lea d-free and adhere to the RoHS directive . For MPS green status, please visit MP S website under Quality Assurance. “M PS” and “The Future of Analog IC Te chnology” are Registered Trademarks o f Monolithic Power Systems, Inc. TYPIC AL APPLICATION VIN CIN D1 RSENSE IN R S MP2489 EN/DIM GND SW L1 MP2489 Re v. 1.23 www.MonolithicPower.com 10/11 /2012 MPS Proprietary Information. Pat ent Protected. Unauthorized Photocopy a nd Duplication Prohibited. © 2012 MPS. All Rights Reserved. 1 MP2489 – STEP DOWN WLED DRIVER








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