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MP2665A 21V, 1A Battery Charger QFN-12

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MPS Battery Management charger QFN-12 Power Management

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MP2665A 21V, 1A Battery Charger QFN-12

The MPS MP2665A is a Battery Charger. It accepts up to 21 V at the input, is rated for 1 A and handles 1s battery stacks. It is supplied in a QFN-12 package.

The MP2665A is a highly integrated, single-cell Li-ion/Li-polymer battery charger with system power path management.

Key Specifications

Part Number	MP2665A
Function	Battery Charger
Input Voltage	up to 21 V
Current Rating	1 A
Battery Cells	1s
Interface	I²C
Package	QFN-12
Ordering Codes	MP2665A

Features

USB-Compliant, I2C-Configurable Charger for Single-Cell Li-Ion/Polymer Batteries
21V Maximum Input Voltage Rating with Over-Voltage Protection (OVP)
Complete Power Path Management to Simultaneously Power the System and Charge the Battery
I2C Interface to Set Charging Parameters and Report INT/Statuses
Ultra-Low Battery Leakage Current in Shipping Mode
System Reset Function
OTP Back Registers to Set Default Power- On Configuration
Available in a QFN-12 (2.5mmx3mm) Package

Typical Application Circuit

Applications

Wearable Devices
Smart Handheld Devices
Fitness Accessories

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.