EV8864-Q-00A

EV8864-Q-00A 4A High Efficient Synchronous Step-Down Converter with IC Interface DESCRIPTION FEATURES The EV8864-Q-00A is used for demonstrating Wide 4.5V-to-21V Operation Input Range the performance of MPSs MP8864. MP8864 is 50m/23m Low R Internal Power DS(ON) a highly integrated and high frequency MOSFETs synchronous step-down switcher with I2C 1% VOUT Accuracy 2 control interface. It is optimized to support up to I C Programmable Output Range from 0.6V 4A load current over an input supply range from to 1.87V in 10mV Steps with Slew Rate 4.5V to 21V with excellent load and line Control 2 regulation. I C Selectable Switching Frequency. Default 600kHz Switching Frequency. Current-Mode operation provides fast transient Programmable Default Output Voltage response and eases loop stabilization. The 2 Power Saving Mode, OTP and OCP Via I C output voltage level can be controlled, on-the fly through a 3.4Mbps I2C serial interface. Voltage Power Good Indication 2 range can be adjusted from 0.6V to 1.87V in 1 bit I C Address Set pin 10mV steps. Voltage slew rate, switching OCP Protection and Hiccup frequency and power savings mode are also External Soft Start selectable through the I2C interface. Fully Available in QFN3x3 Package protection features includes over current APPLICATIONS protection, over voltage protection and over temperature protection. Flat-Panel Television and Monitors Digital Set-Top Boxes MP8864 is available in QFN15 (3mmx3mm) Distributed Power Systems package. All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For ELECTRICAL SPECIFICATION MPS green status, please visit MPS website under Quality Assurance. MPS and The Future of Analog IC Technology are Registered Trademarks Parameter Symbol Value Units of Monolithic Power Systems, Inc. Input Voltage VIN 4.5 21 V Output Voltage VOUT 1.2 V Output Current IOUT 4 A EV8864-Q-00A EVALUATION BOARD Board Number MPS IC Number EV8864-Q-00A MP8864GQ EV8864-Q-00A Rev.1.0 www.MonolithicPower.com 1 11/10/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2016 MPS. All Rights Reserved. EV8864-Q-00A 4A HIGH EFFICIENT SYNC. STEP DOWN SWITCHER WITH I2C EVALUATION BOARD SCHEMATIC R8 C4 10 0.1uF 10 L1 4.5V-21V 1 BST 1uH VIN VIN 1.2V/4A 9 R7 SW VOUT C11 C8 C2 C3 100k R5 22pF C5 C6 C12 3 22uF 22uF 0.1uF EN/SYNC 10 22uF 22uF NS 14 11 R6 VCC VOUT NS C1 R9 R4 0.22 F 100k MP8864 100k C9 R1 R3 10pF 4 PG PG 34k 33k 12 5 FB SDA SDA 6 SCL SCL R2 C10 13 7 SS 34k ADD 10pF AGND PGND 15 2,8 C7 22nF EV8864-Q-00A BILL OF MATERIALS Qty RefDes Value Description Package Manufacturer Manufacturer P/N Ceramic Cap., 1 C1 0.22F 0603 muRata GRM188R71C224KA01D 16V, X7R Ceramic Cap., 2 C2,C8 22F 1206 muRata GRM31CR61E226KE15L 25V, X5R Ceramic Cap., 2 C3,C4 0.1F 0603 muRata GRM188R71E104KA01D 25V, X7R Ceramic Cap., 2 C5,C6 22F 1206 muRata GRM31CR71A226KE15L 10V, X7R Ceramic Cap., 1 C7 22nF 0603 muRata GRM188R71H223KA01D 50V, X7R Ceramic Cap., 2 C9,C10 10pF 0603 muRata GRM1885C1H100JA01D 50V, C0G Ceramic Cap., 1 C11 22pF 0603 muRata GRM1885C1H220JA01D 50V, C0G 0 C12 NS 1 R1 34k Thick Film Res., 1% 0603 Yageo 9C06031A3402FKHFT 1 R2 34k Thick Film Res., 1% 0603 Yageo 9C06031A3402FKHFT 1 R3 33k Thick Film Res., 1% 0603 Yageo 9C06031A3302FKHFT 3 R4,R7,R9 100k Thick Film Res., 1% 0603 Yageo 9C06031A1003FKHFT 2 R5,R8 10 Thick Film Res., 5% 0603 Yageo 9C06031A10R0JLHFT 0 R6 NS Inductor,DCR=4.6m, 1 L1 1H 6.96.93.8mm Wurth 744311100 Is=19A Synchronous Step- 1 U1 MP8864GQ QFN3*3 MPS MP8864GQ Down Convert EV8864-Q-00A Rev.1.0 www.MonolithicPower.com 2 11/10/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2016 MPS. All Rights Reserved.