MP3309A 2.7V-5.5V Input, 35V Output, Programmable Fsw, White LED Driver The Future of Analog IC Technology FEATURES DESCRIPTION 2.7V-to-5.5V Input Voltage The MP3309A is a WLED step-up converter for Low 200mV Feedback Voltage with 1% 2.7V-to-5.5V input that uses peak-current mode Accuracy to regulate the LED current sensed through an Synchronous Mode external low-side resistor. The 200mV feedback voltage and synchronous rectification reduces Analog and PWM Dimming power loss and reduces PCB space Programmable Switching Frequency requirements. To connect an external Schottky 35.5V Over Voltage Protection Point accomplishes the non-synchronous mode for Hardware-Enable Function heavy load to improve the thermal performance. UVLO, Thermal Shutdown Available in 3x3mm QFN10 Package The MP3309A features a programmable switching frequency to optimize efficiency. It APPLICATIONS supports both analog and PWM dimming. Feature Phones and Smart Phones In addition, the MP3309A has LED open Tablets protection, cycle-by-cycle current limit Video Displays protection, thermal shutdown protection and All MPS parts are lead-free and adhere to the RoHS directive. For MPS green over-voltage protection. MP3309A is available status, please visit MPS website under Products, Quality Assurance page. MPS and The Future of Analog IC Technology are Registered Trademarks of in QFN10 3*3mm package. Monolithic Power Systems, Inc. TYPICAL APPLICATION MP3309A Rev. 1.11 www.MonolithicPower.com 1 1/15/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2016 MPS. All Rights Reserved. MP3309A 2.7V-5.5V INPUT, 35V OUTPUT, PROGRAMMABLE FSW, WHITE LED DRIVER ORDERING INFORMATION Part Number Package Top Marking MP3309AGQ* QFN10 (3x3mm) AJFY * For Tape & Reel, add suffix Z (e.g. MP3309AGQZ) PACKAGE REFERENCE TOP VIEW TOP VIEW VOUT 1 10 BST SW 2 9 PWMH GND 3 8 PWMH FB 4 7 VIN FREQ 5 6 EN/PWML QFN10 (3x3mm) (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC V ...................................................-0.3V to +6V QFN10 (33mm).................... 50....... 12 C/W IN V , V ..-1V to +40V SW OUT Notes: V ......................................... -0.3V to V +6V BST SW 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the All Other Pins.................................0.3V to +6V maximum junction temperature T (MAX), the junction-to- J Junction Temperature...............................150C ambient thermal resistance , and the ambient temperature JA Lead Temperature ....................................260C T . The maximum allowable continuous power dissipation at A (2) any ambient temperature is calculated by P (MAX) = (T D J Continuous Power Dissipation ....(T = 25C) A (MAX)-T )/ . Exceeding the maximum allowable power A JA QFN10(3x3mm) ......................................... 2.5W dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal (3) shutdown circuitry protects the device from permanent Recommended Operating Conditions damage. Supply Voltage V ..........................2.7V to 5.5V IN 3) The device is not guaranteed to function outside of its operating conditions. Operating Junction Temp. (T ). -40C to +125C J 4) Measured on JESD51-7, 4-layer PCB. MP3309A Rev. 1.11 www.MonolithicPower.com 2 1/15/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2016 MPS. All Rights Reserved.