MP2721

5A, Single-Cell, I²C-Controlled NVDC Buck Charger

Description

The MP2721 is a highly integrated, 5A switch-mode battery management device for single-cell Li-ion and Li-polymer batteries. The narrow voltage DC (NVDC) power management structure provides a low impedance power path that optimizes charging efficiency, reduces battery charging time, and extends battery life during discharging.

USB Battery Charging Specification 1.2 (BC1.2) and non-standard adapter detection are supported by the input source type identification algorithm.

The I²C interface offers complete operating control, charging parameter configuration, and status/interrupt monitoring. The MP2721 supports a fully-customizable JEITA profile with configurable temperature windows and actions.

The MP2721 is available in a QFN-22 (2.5mmx3.5mm) package.

Features & Benefits

5A NVDC Switching Charger with Power Path
Supports USB BC1.2 and Non-Standard Adapters
26V Sustainable Input Voltage (V_IN)
80mA to 5A I²C-Configurable Charge Current
100mA to 3.2A I²C-Configurable Input Current Limit
Minimum V_IN Loop for Maximum Adapter Power Tracking
Comprehensive Safety Features:
- 750kHz to 1.5MHz Configurable Switching Frequency (f_SW)
- Fully Customizable JEITA Profile
- Additional NTC Thermistor Input
- Configurable Die Temperature Regulation from 60°C to 120°C
- Complete Charge and Pre-Charge Safety Timers
- Watchdog Safety Timer
- Lockable Registers for Charging Parameters
Integrated 15mΩ Low R_DS(ON) Battery FET with Shipping Mode and Reset Mode
Ultra-Low 8.5μA Battery Discharge Current in Shipping Mode
Down to 30mA Termination Current Settings for Wearable Applications
I²C Port for Flexible System Parameter Setting and Status Reporting
Configurable Boost Converter for Source Mode (OTG):
- Up to 3A Configurable Output Current (I_OUT) Limit Loop
- Output Over-Current Protection (OCP)
- Ability to Power in Large Capacitive Loads Up to 2mF
- 5V to 5.35V Configurable Output Voltage (V_OUT)
Accuracy:
- Available in a QFN-22 (2.5mmx3.5mm) Package
- ±0.5% Battery Regulation Voltage
- ±5% Charge Current
- ±5% Input Current Limit
- Remote Battery Sensing for Fast Charge Mode
- ±2% Output Regulation in Boost Mode