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MP24894 Datasheet(PDF) 1 Page - Monolithic Power Systems |
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MP24894 Datasheet(HTML) 1 Page - Monolithic Power Systems |
1 / 12 page MP24894 Step-Down WLED-Current Controller with Wide 6V to 60V Input Voltage MP24894 Rev 1.01 www.MonolithicPower.com 1 12/20/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. The Future of Analog IC Technology DESCRIPTION The MP24894 is a high-efficiency step-down controller. It is designed to operate in continuous current mode (CCM) to power LEDs of high-brightness with a wide input voltage range of 6V to 60V. The MP24894 employs a hysteretic control architecture that accurately regulates LED current with a feedback coming from an external high-side current-sense resistor. This control scheme optimizes circuit stabilization and fast response time without loop compensation. Its low 200mV average feedback voltage reduces power loss and improves the converter’s efficiency. The MP24894 implements PWM and analog dimming together through the EN/DIM pin. The MP24894 includes thermal overload protection in case of output overload. The MP24894 is available in TSOT6 package. FEATURES • Wide 6V to 60V Input Range • Able to Drive >1A LED Load • Hysteresis Control • High Efficiency (>95%) • 2500:1 PWM Dimming Ratio • Open LED Protection • Short LED Protection • Thermal Shutdown APPLICATIONS • Low Voltage Halogen Replacement • Low Voltage General Illumination • Automotive/Decorative LED Lighting • Signs/Emergency Lighting • LED Backlighting All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION 6V-60V VIN CIN RSENSE MP24894 IN RS DR GND VCC EN/DIM D1 L1 |
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