EV2672A-D-00A 2-Cell Boost Charger with 2A Charge Current and NVDC Evaluation Board DESCRIPTION FEATURES The EV2672A-D-00A is an evaluation board 4.0V to 5.75V Input Voltage Range designed to demonstrate the capabilities of the Compatible with Host and Standalone Mode MP2672A, a highly integrated, flexible switch- NVDC Power Path Management mode battery charging management device for Configurable Input Voltage Limit 2-cell series Li-ion and Li-polymer battery packs. Up to 2A Configurable Charge Current for 2- The MP2672A can be used in a wide range of Cell Battery portable applications. Configurable Charge Voltage with 0.5% When a 5V adapter or USB input is present, the Accuracy MP2672A charges the 2-cell battery in step-up No External Sense Resistor Required mode. When the 5V input is absent, the 2-cell Integrated Cell-Balancing Circuit and battery discharges, and the battery supplies Preconditioning for Fully Depleted Battery power to the system. Flexible New Charging Cycle Initiation To effectively charge each application, the Charging Operation Indicator 2 MP2672A automatically detects the battery I C Port for Flexible System Parameter voltage, and charges the battery in three Setting and Status Reporting phases: pre-charge, constant current (CC) Negative Temperature Coefficient (NTC) charge, and constant voltage (CV) charge. Pin for Temperature Monitoring Other charging features include charge Built-In Charging Protection and termination and auto-recharge. Configurable Safety Timer Thermal Regulation and Thermal Shutdown To guarantee safe operation, the MP2672A Available in a QFN-18 (2mmx3mm) limits the die temperature to a preset value Package (about 120C). Other safety features include input over-voltage protection (OVP), battery APPLICATIONS OVP, thermal shutdown, battery temperature monitoring, and a configurable timer to prevent Portable Handheld Solutions prolonged charging of a dead battery. Point-of-Sale (PoS) Machines Bluetooth Speakers The MP2672A is available in a QFN-18 E-Cigarettes (2mmx3mm) package. General 2-Cell Applications ELECTRICAL SPECIFICATIONS All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Parameter Symbol Value Units Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are Input voltage V 4.5 to 6.0 V registered trademarks of Monolithic Power Systems, Inc. IN Pre-charge 6.4, V V BATT PRE 2 threshold I C-configurable Battery charge 8.4, VBATT REG V 2 voltage I C-configurable regulation Fast charge 2, ICC A 2 current I C-configurable System regulation VSYS REG MIN 6.7 V minimum voltage EV2672A-D-00A Rev. 1.0 MonolithicPower.com 1 12/2/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. EV2672A-D-00A 2-CELL IN SERIES, 2A BOOST CHARGER WITH NVDC EVAL BOARD EV2672A-D-00A EVALUATION BOARD Charge Efficiency Tests on the EVB Constant Current Charge Efficiency VIN = 5V (5A), ISYS = 0A, VBATT ramp from 6.4V to 8.4V in a constant current loop 1 0.95 0.9 0.85 ICC=2A ICC=1A 0.8 6.4 6.9 7.4 7.9 8.4 V (V) BATT Top Layer Constant Voltage Efficiency VIN = 5V (5A), ISYS = 0A, VBATT = 8.4V, charge current decreases until charging is done in the constant voltage loop 1 0.95 0.9 0.85 ICC=1A ICC=2A 0.8 00.5 11.5 2 I (A) BATT Bottom Layer (LxWxH) 6.35cmx6.35cmx0.16cm Board Number MPS IC Number EV2672A-D-00A MP2672AGD EV2672A-D-00A Rev. 1.0 MonolithicPower.com 2 12/2/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. EFFICIENCY EFFICIENCY