MP4000 Offline High Brightness White LED Driver Controller DESCRIPTION FEATURES Constant-current LED Driver The MP4000 is a high efficiency step-down Power MOSFET Zero-Current Turn On converter designed for driving high brightness Light Emitting Diodes (LEDs). No Freewheeling Diode Reverse Recovery Issues The MP4000 drives an external MOSFET in the High Efficiency and Reliability in Boundary floating buck converter structure. The inductor Mode Operation current is regulated with boundary conduction Low 0.9mA Operation Current mode which features no reverse recovery loss PWM or DC Input Burst Dimming Control in the freewheeling diode and soft turn on for Hiccup Short Circuit Protection the power MOSFET. Such operation mode can UVLO, Thermal Shutdown achieve very high efficiency and at the same Maximum Frequency is Limited to 110kHz time minimize the inductor value and size. Also, Available in SOIC8 Package the LED current can be well regulated by controlling the MOSFET peak current, which is APPLICATIONS sensed through an external resistor. Its low DC/DC or AC/DC LED Driver applications 300mV feedback voltage reduces power loss and improves efficiency. General Illumination Industrial Lighting The MP4000 can accept an external PWM or a Automotive/ Decorative LED Lighting DC signal for the burst dimming control. For MPS green status, please visit MPS website under Quality Assurance. The MP4000 features output short protection, MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. maximum switching frequency limit, under- voltage lockout and thermal shut down. TYPICAL APPLICATION MP4000 Rev. 1.3 www.MonolithicPower.com 1 7/13/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2018 MPS. All Rights Reserved. MP4000 OFFLINE HIGH BRIGHTNESS WLED DRIVER CONTROLLER ORDERING INFORMATION Part Number Package Top Marking Free Air Temperature (T ) A MP4000DS SOIC8 MP4000 -40C to +85 C * For Tape & Reel, add suffix Z (e.g. MP4000DSZ). For RoHS Compliant Packaging, add suffix LF (e.g. MP4000DSLFZ) PACKAGE REFERENCE SOIC8 (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC VCC, DRIVE .................................. -0.3V to 11V SOIC8 .................................... 96 ...... 45 ... C/W DIM, BOS, CS .............................. -0.3V to 6.5V Notes: (2) Continuous Power Dissipation (T = +25C) A 1) Exceeding these ratings may damage the device. SOIC8 ........................................................ 1.3W 2) The maximum allowable power dissipation is a function of the maximum junction temperature T (MAX), the junction- J Junction Temperature .............................. 150 C to-ambient thermal resistance , and the ambient JA Lead Temperature ................................... 260 C temperature T . The maximum allowable continuous power A dissipation at any ambient temperature is calculated by P D Storage Temperature ............... -55C to +150 C (MAX) = (T (MAX)-T )/ . Exceeding the maximum J A JA allowable power dissipation will cause excessive die (3) Recommended Operating Conditions temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the VCC, DRIVE ................................... 8V to 10.5V device from permanent damage. Maximum Junction Temp. (T ) ............. +125C J 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on JESD51-7, 4-layer PCB. MP4000 Rev. 1.3 www.MonolithicPower.com 2 7/13/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2018 MPS. All Rights Reserved.