Microchip Battery Charge Controller IC 3.75 V to 6 V Input 4.168 V Output 15 mA SOT-23 5-Pin MCP73831T-2DCI/OT

Microchip MCP73831T-2DCI/OT Battery Charge Controller IC is a highly advanced linear controller intended for safe and efficient charging of single cell Lithium-Ion and Lithium-Polymer batteries. It supports input voltages from 3.75 V to 6 V and provides a regulated output voltage of 4.168 V with a 15 mA output current, suitable for low-power portable electronic devices.

This device comes housed in a compact SOT-23 5-pin package, making it ideal for space-constrained designs. The controller integrates essential features such as an internal pass transistor, current sensing circuitry, and reverse discharge protection, reducing external component count and overall solution cost.

With high precision voltage regulation at ±0.75% accuracy and four selectable voltage options (4.2 V, 4.35 V, 4.4 V, and 4.5 V), this IC provides flexibility to meet various battery chemistries and specifications. Its programmable charge current can range from 15 mA to 500 mA, allowing tailored charging profiles.

Additional robust features include chip integrated thermal regulation for safe operation, under-voltage lockout protection to prevent battery damage in low supply voltage conditions, and compatibility with USB charger interfaces. The MCP73831T series is widely used in consumer electronics such as Bluetooth headsets, digital cameras, personal data assistants, cellular phones, and MP3 players.

Operating temperatures range from -40°C to 85°C, ensuring reliability in diverse environmental conditions. The device adheres to quality standards required in commercial and industrial battery management scenarios, although it carries no special certifications.

Small cost-effective SOT-23 package suitable for compact battery management circuits. High-accuracy pre-set voltage regulation with selectable options. Programmable charge current from 15 mA up to 500 mA for diverse applications.

Integrated pass transistor, current sensing, and reverse discharge protection minimize external components. Thermal regulation and under-voltage lockout features increase charging safety. Ideal for use in consumer electronics battery chargers and USB charging applications.

Wide operating temperature range from -40°C to 85°C.

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