MP3312 2.7V-5.5V Input , 38V OVP, Dual-Channel White LED Driver DESCRIPTION FEATURES The MP3312 is a dual-channel step-up WLED 2.7V~5.5V Input Voltage driver with integrated 40V MOSFET, and 1.2MHz Switching Frequency supports 2.7V to 5.5V power supply input. It uses Dual Channels Support up to 30mA/String peak current mode to regulate the LED current 1% Current Matching Between LED Channels which is set by external resistor. +/-2% Current Accuracy 38V OVP Protection The MP3312 employs 1.2MHz fixed switching PWM Input Analog Dimming Mode frequency. It features supporting both PWM input analog dimming and digital analog dimming to 5kHz to100kHz PWM Input Analog Dimming accurately regulate the dimming current. 1-Wire Interface for Digital Dimming 9-bit Dimming Resolution The MP3312 integrates current source to Internal Soft Start to Reduce Inrush Current balance LED current, which leads good ILED Available in WLCSP1.35x1.35-9 Package matching and accuracy performance. In addition, the MP3312 has LED open and short APPLICATIONS protection, cycle by cycle current limit protection, Feature Phone and Smart Phones and thermal shutdown protection. It is available in Tablets tiny WLCSP1.35x1.35-9 package. GPS Receivers <10 inch LCD video displays with one-cell Li- ion battery All MPS parts are lead-free, halogen 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 L1 D1 VIN C2 C1 GND SW IN MP3312 EN EN/1 Wire PWM PWM LED1 LED2 COMP R2 ISET GND R1 C3 MP3312 Rev. 1.1 www.MonolithicPower.com 1 12/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. MP3312 2.7V-5.5V INPUT, 38V OVP, DUAL-CHANNEL WHITE LED DRIVER ORDERING INFORMATION Part Number* Package Top Marking MP3312GC WLCSP1.35x1.35-9 BU * For Tape & Reel, add suffix Z (e.g. MP3312GCZ) PACKAGE REFERENCE 1 2 3 ISET LED2 LED1 A PWM COMP GND B EN VIN SW C Package Diagram WLCSP1.35x1.35-9 (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC V .................................................. -0.3V to +6V WLCSP1.35x1.35-9..120..12..C/W IN V ....-1V to +40V SW Notes: V V ...-0.3V to +40V LED1, LED2 1) Exceeding these ratings may damage the device. All Other Pins ................................ 0.3V to +6V 2) The maximum allowable power dissipation is a function of the 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 WLCSP1.35x1.35-9 ................................. 1.04W dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal (3) Recommended Operating Conditions shutdown circuitry protects the device from permanent damage. Supply Voltage V ......................... 2.7V to 5.5V IN 3) The device is not guaranteed to function outside of its Operating Junction Temp....... -40C to +125C operating conditions. 4) Measured on JESD51-7, 4-layer PCB. MP3312 Rev. 1.1 www.MonolithicPower.com 2 12/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved.