MP2772 2A Battery Charger WLCSP-30

MP2772 2A Battery Charger WLCSP-30

The MP2772 is a highly integrated, switching battery charger that provides a complete solution for wearable and portable devices.

Key Specifications

Features

• Dual, Integrated Load Switches with OCP and Short-Circuit Protection (SCP)
• Integrated ADC for Charge and Discharge Parameters
• NVDC Power Path Enabling System Instant Start-Up with Deeply Discharged Battery
• Battery Supplement Mode Provides Battery Current to Support Heavy System Loads
• Below 5μA Battery Discharge Current in Shipping Mode
• Integrated, 30mΩ, Low-RDS(ON) Battery MOSFET (BATFET) with Shipping Mode and System Power Reset Function
• Available in a Small WLCSP-30 (2.5mmx2.85mm) Package

Typical Application Circuit

Applications

• Wearable Devices
• Earbud Charging Cases
• Headsets and Headphones

Design Notes

• Charge current accuracy depends on the sense resistor tolerance, so use a 1% or better part and keep its traces Kelvin-connected.
• Wire the NTC input for JEITA profile control if the pack is charged over temperature.
• Set the input current limit to what the adapter can actually deliver; a limit above the adapter rating causes the input rail to collapse mid-charge.
• Termination current and recharge threshold dominate cycle life in shallow-cycling products.

Common Questions