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MPS MP2665A Single-Cell Li-Ion Charger (1A, I2C)

MPSMPS MP2665A Single-Cell Li-Ion Charger (1A, I2C)

MPN: MP2665AGQB-0000-P
Monolithic Power Systems (MPS)
Battery Management 21V, 1A, Battery Charger for Single-Cell Li-Ion Batteries with I2C Control, Power Path Management, and Shipping Mode
110 in stock
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Overview

The MP2665AGQB-0000-P from Monolithic Power Systems is a battery charger and power-path manager for single-cell Li-ion batteries. It supports up to 21 V input and a 1 A charge current and provides I2C control plus a shipping mode for transport-safe battery handling. The device is intended to manage charging, power-path switching, and register-configurable behavior via I2C.

Why Choose This Part

I2C control allows register-level configuration and monitoring from a host MCU, enabling dynamic charge profiles and telemetry. Integrated power-path management lets the system run from input power while charging the battery, simplifying system-power design. Shipping mode provides a hardware-supported low-voltage state for safe transportation and storage.

Applications

Portable consumer electronics
Single-cell handheld devices and remotes that need regulated charging and system-load management while charging.
Battery-powered IoT nodes
IoT sensors and edge devices that benefit from I2C-configurable charging and telemetry.
Wearables and medical devices
Small battery systems that require controlled charging, shipping-mode support, and power-path management.
Field instruments and handheld test gear
Devices needing reliable single-cell charging and the ability to run from adapter power without interrupting battery management.

Getting Started

Start by downloading the MP2665A datasheet and any application notes from the manufacturer to follow recommended layout and safety guidelines. Prototype on an evaluation board or a breakout and use a microcontroller with an I2C master (for example an STM32 or an Arduino-compatible board) to exercise configuration and readback registers. Observe standard Li-ion safety practices when connecting batteries and verify thermal performance at your target charge current.

Also Consider

LTC4054-4.2 Analog Devices - Linear single-cell Li-ion charger IC suitable for compact designs that prioritize simplicity and a small component count.

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