MCP73838-FJI/UN

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Integrated circuits have a long history of powering and charging modern electronic devices. The MCP73838-FJI/UN is a fully integrated constant-current/constant-voltage linear charger for single-cell Li-Ion/Li-Polymer batteries. This charge management device offers a complete, highly integrated solution for USB and adapter-based single cell Li-Ion or Li-Polymer battery charge applications.

The MCP73838-FJI/UN can support a wide range of input power source ranging from 500mA (when powered from USB) to 1.3A (when powered from adapter). It features automatic recharge, automatic power save mode, low current sleep mode and pulse-skip mode. It also features a low profile 10-MSOP package for simplified board routing and efficient thermal performance. The MCP73838-FJI/UN combines a current-limited output, thermal overload protection, and a safety timer to ensure maximum safety and reliable battery charges.

The MCP73838-FJI/UN is categorized as a PMIC- Battery charger with specifications ideal for USB charging applications. It is designed to accurately provide constant voltage and current regulation during charging the battery. It continuously monitors the battery voltage, current and temperature through an External NTC thermistor to ensure a safe and reliable charge. The current mode control uses a patented high-side power MOSFET structure to minimize power dissipation while there are no sense resistor needed. Additionally, an internal pre-regulated linear regulator provides a regulated VREF (2.2V as default) output.

The MCP73838-FJI/UN has an integrated USB power switch, allowing it to function as a USB switch hub. It also integrates an on-board power FET and a P-channel MOSFET for power supply monitoring. By using the integrated 7-bit configuration port, the user can set the charging current, input current limit, charger enable, adapter enable, fixed-enable, bridging, system power, and even the idle current. The charger can also be monitored through an integrated voltage level detectors. Furthermore, the MCP73838-FJI/UN has an internal power-on reset circuit for system security.

The MCP73838-FJI/UN has a wide range of features and advantages. Firstly, it is a low-cost solution with a low profile 10-MSOP package. Secondly, it has programmable input current limit, enabling the user to optimize charging current according to the adapter, USB port, and battery capacity. Additionally, the charger incorporates a dynamic trickle trickle current regulation during cold battery or temperature dependent charging to ensure safe and reliable charge termination over a wide temperature range. The charger also has a low input current sleep mode to reduce power consumption in this mode. Finally, the charger supports multiple charge cycles, allowing accurate and safe conditioning of the Li-Ion battery.

In conclusion, the MCP73838-FJI/UN is a complete and highly integrated constant-current and constant-voltage linear charger for single-cell Li-Ion or Li-Polymer batteries. It is designed for USB charging applications and has a wide range of features and advantages. It is capable of providing constant voltage and current regulation, as well as monitoring of battery voltage, current and temperature. The MCP73838-FJI/UN is categorized as a PMIC- Battery charger with ideal specifications for USB charging applications.

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