MP2619 2A, 24V Input, 600kHz 2-3 Cell Switching Li-Ion Battery Charger With System Power Path Management The Future of Analog IC Technology DESCRIPTION FEATURES The MP2619 is a monolithic switching charger Charges 2-3 cell Li-Ion Battery Packs for 2-3 cell Li-Ion battery packs with a built in Wide Operating Input Range internal power MOSFET. It achieves up to 2A Up to 2A Programmable Charging Current charge current with current mode control for Power Path Management with Current fast loop response and easy compensation. Sharing The charge current can be programmed by 0.75% V Accuracy BATT sensing the current through an accurate sense 0.2 Internal Power MOSFET Switch resistor. Up to 90% Efficiency MP2619 regulates the battery voltage and Fixed 600kHz Frequency charge current using two control loops to realize Preconditioning for Fully Depleted Batteries high accuracy CC charge and CV charge. Charging Operation Indicator Input Supply and Battery Fault Indicator The system power path management function Thermal Shutdown ensures continuous supply to the system by Cycle-by-Cycle Over Current Protection automatically selecting the input or the battery to Battery Temperature Monitor and Protection power the system. Power path management separates charging current from system load. APPLICATIONS When the MP2619 realizes current sharing of Netbook PC the input current, charge current will drop down according to the increase of the system current. Distributed Power Systems Chargers for 2-Cell or 3-Cell Li-Ion Fault condition protection includes cycle -by Batteries -cycle current limiting, and thermal shutdown. Pre-Regulator for Linear Regulators Other safety features include battery temperature monitoring, charge status indication and All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. programmable timer to finish the charging cycle. MPS and The Future of Analog IC Technology are registered trademarks of Monolithic Power Systems, Inc. The MP2619 is available in a 28-pin, 4mm x 5mm QFN package. MP2619 Rev. 1.02 www.MonolithicPower.com 1 11/9/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2018 MPS. All Rights Reserved. MP2619 2A, 24V INPUT, 600kHz 2-3CELL SWITCHING LI-ION BATTERY CHARGER TYPICAL APPLICATION M3 M1 RS2 V V IN SYS 20m C8 C10 RG2 RG1 10F 22uF LED1 51 R1 510 51 M2 LED2 R2 510 L CHGOK ACOK VCC RG1 RG2 4.7F RS1 V BAT PIN C2 SW 2/3 cells C7 4.7F 110m C9 0.1F battery D1 22uF BST AIN C1 10F CELLS OUT1 RGS1 280 VREF33 CSP MP2619 R3 VREF25 10k BATT C3 RGS2 280 NTC 10F R NTC 10k EN Charge On/Off SHDN COMPV COMPI GND TMR C TMR R4 R5 0.1uF Power Path On/Off 2.7k 750 C4 C5 2.2nF 2.2nF MP2619 Rev. 1.02 www.MonolithicPower.com 2 11/9/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2018 MPS. All Rights Reserved.