MPS MP2639BGR-Z

锂离子/聚合物3A-40°C ~ 125°C（TJ）

Overview

The MP2639AGR 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 MP2639AGR is able to charge a 2-cell battery from a 5V adapter or USB input. The MP2639AGR 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 MP2639AGR operating in step-up mode. When the 5V input is absent, the 2-cell battery voltage is discharged to the 5V output via the MP2639AGR working in step-down mode.For the charging function, the MP2639AGR 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 auto-recharge.To guarantee safe operation, the MP2639AGR limits the die temperature to a preset value of 120°C. Other safety features include input over-voltage 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 MP2639AGR is available in a QFN-26 (4mmx4mm) package.

Features

Tape & Reel (TR) Package
Lithium Ion/Polymer Battery Chemistry
1 Number of Cells
Timer Programmable Features
Over Current, Over Temperature, Over Voltage, Short Circuit Fault Protection
3A Charge Current - Max
4.5V Battery Pack Voltage
16V Voltage - Supply (Max)
Surface Mount Mounting Type