MP8865 High-Efficiency, 6A, 21V, Synchronous 2 Step-Down Converter with I C Interface DESCRIPTION FEATURES The MP8865 is a high-frequency, synchronous, Wide 4.5V to 21V Operation Input Range rectified, step-down, switch-mode converter 45m/18m Low R Internal Power DS(ON) 2 with an I C control interface. It offers a very MOSFETs compact solution to achieve a 6A continuous 1% VOUT Accuracy 2 output current with excellent load and line I C Programmable Reference Voltage regulation over a wide input supply range. The Range from 0.6V to 1.87V in 10mV Steps MP8865 has synchronous-mode operation for with Slew Rate Control higher efficiency over the output load range. 2 I C Selectable Switching Frequency. Default 600kHz Switching Frequency. The reference voltage level can be controlled 2 Programmable Output Voltage on-the-fly through the 3.4Mbps I C serial 2 Power-Saving Mode, OTP, and OCP via I C interface. The voltage range can be adjusted from 0.6V to 1.87V in 10mV steps. Also, the Power Good Indication 2 voltage slew rate, switching frequency, enable, 1-Bit I C Address Set and power-saving mode are selectable through OCP Protection in Hiccup Mode 2 the I C interface. External Soft Start Available in a QFN-15 3mm x 3mm Current-mode operation provides fast transient Package response and eases loop stabilization. Full protection features include over-current APPLICATIONS protection (OCP), over-voltage protection SoC and Media Processors (OVP), and thermal shutdown (TSD). General Consumers The MP8865 requires a minimal number of Distributed Power Systems readily available, standard, external All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For components and is available in a QFN-15 MPS green status, please visit the MPS website under Quality Assurance. 3mm x 3mm package. MPS and The Future of Analog IC Technology are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION C4 R8 0.1F 10 L1 4.5V-21V BST 1H VIN 1.2V/6A VOUT SW C2 VOUT C5 22FX2 R1 R9 47F 34k 100k FB R3 R2 EN/SYNC 33k 34k MP8865 VCC C1 SDA SDA R4 0.22F SCL SCL 100k ADD PG SS AGND PGND C7 22nF MP8865 Rev. 1.03 www.MonolithicPower.com 1 1/18/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2018 MPS. All Rights Reserved. MP8865 SYNCHRONOUS STEP-DOWN CONVERTER ORDERING INFORMATION Part Number Package Top Marking MP8865GQ* QFN-15 (3mmx3mm) See Below EVKT-8865 Evaluation Kit *For Tape & Reel, add suffix Z (e.g. MP8865GQZ) TOP MARKING AGL: Product code of MP8865GQ Y: Year code LLL: Lot number EVALUATION KIT EVKT-8865 EVKT-8865 Kit contents: (Items can be ordered separately). Part Number Item Quantity 1 EV8865-Q-00A MP8865GQ evaluation board 1 Includes one USB to I2C dongle, one USB cable, and one 2 EVKT-USBI2C-02 1 ribbon cable USB flash drive that stores the GUI installation file and 3 Tdrive-8865 1 supplemental documents Order direct from MonolithicPower.com or our distributors Input Power Supply Input GUI USB Cable Ribbon Cable USB to I2C Dongle EV8865-Q-00A Output Load Figure 1: EVKT-8865 Evaluation Kit Set-Up MP8865 Rev. 1.03 www.MonolithicPower.com 2 1/18/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2018 MPS. All Rights Reserved.