MP2665A

21V, 1A, Single-Cell Li-Ion Battery Charger with I²C Control, Power Path Management, and Shipping Mode

Description

The MP2665A is a highly integrated, single-cell Li-ion and Li-polymer battery charger with system power path management. It is ideal for space-constrained portable applications. The device takes input power from either an AC adapter or a USB port to supply the system load and charge the battery simultaneously. The charger features pre-charge, constant current (CC) fast charge, constant voltage (CV) regulation, charge termination, and auto-recharge.

Power path management ensures that the system is continuously powered by automatically selecting the input, the battery, or both to power the system. Power path management is accomplished using a low-dropout (LDO) regulator connected from the input to the system, as well as a 100mΩ switch connected from the battery to the system. This function separates the charging current from the system load, which allows for proper charge termination and keeps the battery in full charge mode.

The MP2665A provides system short-circuit protection (SCP) by limiting the current from the input to the system, as well as the current from the battery to the system. This prevents the Li-ion battery from being damaged due to excessively high currents. Battery under-voltage lockout (UVLO) protection blocks the path between the battery and the system if the battery voltage drops below the configurable UVLO threshold. This prevents the Li-ion battery from being discharged excessively. The integrated I²C interface can configure the following charging parameters: input current limit, input voltage (V_IN) regulation limit, charge current, battery regulation voltage, safety timer, and battery UVLO threshold.

The MP2665A is available in a QFN-12 (2.5mmx3mm) package.

Features & Benefits

USB-Compatible, I²C-Configurable, Single-Cell Li-Ion and Li-Polymer Battery Charger
21V Maximum Input Voltage (V_IN) Rating with Over-Voltage Protection (OVP)
Complete Power Path Management to Power the System and Charge the Battery Simultaneously
Fully Configurable Charging Parameters:
- 50mA to 1A Input Current Limit
- 88V to 5.08V V_IN Loop to Support Weak Adapters
- ±0.5% Charging Termination Voltage Accuracy
- 16mA to 896mA Fast-Charge Current
- 5mA to 62mA Pre-Charge and Termination Current
I²C Interface to Configure Charging Parameters and Report INT/Statuses
Ultra-Low Battery Leakage Current in Shipping Mode
Robust Safety Features:
- Built-in Charging Protections, Including Battery Temperature Monitoring and Configurable Timer
- Configurable Thermal Regulation
- Configurable Watchdog Timer
- PCB Over-Temperature Protection
- Configurable Over-Discharge Current Protection
System Reset Function
One-Time Programmable (OTP) Memory Back Registers to Set Default Power-On Configuration
Available in a QFN-12 (2.5mmx3mm) Package

Active Part Numbers:

MP2665AGQB-xxxx-Z MP2665AGQB-xxxx-P MP2665AGQB-0000-Z MP2665AGQB-0000-P

Meaning of P & Z

Evaluation Tools

EV2665A-QB-00A Evaluation Kit 21V, 1A, Linear Charger for Single-Cell Li-Ion Batteries with Power Path Management Evaluation Board

The EV2665A-QB-00A is an evaluation board designed to demonstrate the capabilities of the MP2665A, a highly integrated, single-cell Li-ion and Li-polymer battery charger with system power path management. The MP2665A is ideal for space-constrained portable applications. It takes input power from either an AC adapter or a USB port to supply the system load and charge the battery simultaneously. It also features pre-charge, constant current (CC) fast charge, constant voltage (CV) regulation, charge termination, and auto-recharge.

The MP2665A ensures that the system is continuously powered by automatically selecting the input, the battery, or both to power the system. It provides system short-circuit protection (SCP) to prevent the Li-ion battery from being damaged due to excessively high currents.

The device also provides battery under-voltage lockout (UVLO) protection that blocks the path between the battery and the system if the battery voltage drops below the configurable UVLO threshold. This prevents the Li-ion battery from being discharged excessively.

The integrated I²C interface can configure the following charging parameters: input current limit, input voltage (V_IN) regulation limit, charge current, battery regulation voltage, safety timer, and battery UVLO threshold. The MP2665A is available in a QFN-12 (2.5mmx3mm) package.

$50.00
+ tax

Design Resources

Symbol, Footprint & 3D Model

30+ more formats Show more