MP26121 7V, 1A Li + Linear Battery Charger QFN-10

MP26121 7V, 1A Li + Linear Battery Charger QFN-10

The MP26121 is a linear, high-performance single cell Li-Ion/Li-Polymer battery charger.

Key Specifications

Features

• Interfaces to Many NTC Resistor Values
• Proprietary VIN Surge Protection up to 28V
• Programmable Charge Current up to 1A
• 1% Voltage Accuracy
• 10% Battery-Full Threshold
• No Reverse Blocking Diode Required
• Intelligent Thermal Management
• Trickle Charge
• 7V Input OVP
• Auto Recharge

Typical Application Circuit

Applications

• Cell Phones
• Digital Cameras
• Smart Phones
• MP3 Players "MPS" and "The Future of Analog IC Technology" are Registered Trademarks of Monolithic Power Systems, Inc.

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