MP2639C Datasheet | Monolithic Power Systems

DESCRIPTION The MP2639C is a highly integrated, flexible, switch-mode, battery-charging management device for 2-cell series Li-ion and Li-polymer batteries used in a wide range of portable applications. The MP2639C is able to charge a 2-cell battery from a 5V adapter or USB input. The MP2639C can work in three modes: charge mode, discharge mode, and sleep mode. In 2-cell applications, the 5V input charges the 2-cell battery via the MP2639C operating in step-up mode. When the 5V input is absent, the 2-cell battery voltage is discharged to the 5V output via the MP2639C working in step-down mode. For the charging function, the MP2639C detects the battery voltage automatically and charges the battery in three phases: trickle current, constant current, and constant voltage. Other features include charge termination and autorecharge. To guarantee safe operation, the MP2639C limits the die temperature to a preset value of 120°C. Other safety features include input overvoltage protection (OVP), battery over-voltage protection (OVP), thermal shutdown, battery temperature monitoring, and a programmable timer to prevent prolonged charging of a dead battery. The MP2639C is available in a QFN-26 (4mmx4mm) package. FEATURES - 4.0V to 5.75V Input Voltage Range - Charge 2-Cell Batteries with 5V Input - USB-pliant Charger - Integrates Input Current-Based and Input Voltage-Based Power Management Functions - Programmable Input Current and Input Voltage Limit - Up to 2.5A Programmable Charge Current for 2-Cell Applications - 8.4V Charge Voltage with 0.5% Accuracy - Up to 5.0A Programmable Discharge Current - Negative Temperature Coefficient Pin for Temperature Monitoring - No Load Shutdown and Push Button Turn On in Discharge Mode - Programmable Timer Back-Up Protection - Discharge Mode Load Trace pensation - Thermal Regulation and Thermal Shutdown - Internal Battery Reverse Leakage Blocking - Integrated Short-Circuit Protection (SCP) for Both Charge and Discharge Mode - Four LED...