MP2607 Li + LINEAR Charger WithSystem Power Path Management QFN14

MP2607 Li + LINEAR Charger WithSystem Power Path Management QFN14

MP2607 is a highly-integrated single-cell Li- Ion/Li-Polymer battery charger with system power path management function.

Key Specifications

Features

• Fully Autonomous Charger for Single-Cell Li-Ion/Polymer Batteries
• Selectable Input Power Sources from AC Adapter or USB Port
• Built-in Current Limit for USB Port
• Complete Power Path Management for Simultaneously Powering the System and Charging the Battery
• 0.75% Charging Voltage Accuracy
• 12V Maximum Voltage for the Input Source
• Programmable Charging Current
• Built-in Timer for Charge Termination
• No External Blocking Diode Required
• Tiny QFN14 (3mm x 4mm) Package

Typical Application Circuit

Applications

• Smart Handheld Devices
• Cell Phones, PDAs, MP3 Players
• Digital Cameras, GPS

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