Microchip MCP73831 Single Cell Li-Ion Charge Controller SOT-23, 4.2V, 500mA
Advanced single-cell Li-Ion/Li-Polymer charge controller in SOT-23-5, 4.2V, 500mA, with thermal regulation and USB compliance.
The Microchip MCP73831T-2ATI/OT is a highly advanced linear charge management controller designed for space-limited portable applications. Its compact SOT-23-5 package and minimal external component requirement make it ideal for modern compact devices.
Engineered for USB-powered charging, this controller fully complies with USB power bus specifications. It utilises a constant current/constant voltage (CC/CV) charging algorithm with selectable preconditioning and charge termination. The constant current value is easily set with a single external resistor, and the device delivers a programmable charge current from 15mA to 500mA.
Key safety and reliability features include integrated pass transistor, integrated current sensing, and reverse discharge protection. The high-accuracy preset voltage regulation of +0.75% ensures precise 4.2V charging for single-cell Li-Ion or Li-Polymer batteries. Thermal regulation optimises the charge cycle while maintaining device reliability, even under high power or high ambient conditions.
Specifications:
- Battery Type: Li-Ion, Li-Polymer
- Input Voltage: 6V
- Battery Charge Voltage: 4.2V
- Charge Current: Programmable up to 500mA
- Package: SOT-23-5
- Pins: 5
- Number of Cells: 1
- Operating Temperature: -40°C to +85°C
- Mounting: Surface Mount
- Product Range: MCP73831, MCP73832
The controller also features selectable preconditioning, selectable end-of-charge control, tri-state output, and automatic power down, making it a versatile and reliable solution for efficient battery management in portable electronics.
- Consumer electronics
- Portable devices
- Power management applications
- USB-powered charging applications
- Battery Type: Li-Ion, Li-Polymer
- Input Voltage: 6V
- Battery Charge Voltage: 4.2V
- Charge Current: Programmable up to 500mA
- IC Case / Package: SOT-23-5
- No. of Pins: 5
- No. of Cells: 1
- Operating Temperature Min: -40°C
- Operating Temperature Max: 85°C
- IC Mounting: Surface Mount
- Product Range: MCP73831, MCP73832
- High Accuracy Preset Voltage Regulation: +0.75%
- Integrated Pass Transistor
- Integrated Current Sense
- Reverse Discharge Protection
- Selectable Preconditioning
- Selectable End-of-Charge Control
- Tri-State Output
- Automatic Power Down
- Thermal Regulation
- Thermal regulation Battery Type: Li-Ion, Li-Pol
- of Pins: 5Pins
- of Cells: 1Cells
- SVHC: No SVHC (04-Feb-2026)
Always follow local regulations and product guidance.
Free standard delivery on UK mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For faulty items, contact us within 14 days for a replacement or refund.
View Full Delivery & Returns PolicySecure Transactions
We take the utmost care with your payment and personal details. Our website employs advanced encryption technology, including Secure Sockets Layer (SSL), to protect your information during transmission. You can verify a secure connection by looking for 'https' and a locked padlock in your browser.
Cookie Policy
Cookies enhance your shopping experience by keeping track of your basket and remembering you when you return. We also use banner advertising based on your browsing history to present products of potential interest.
Security Warning
Beware of phishing scams! We will never ask for personal details via email. If such information is required, we'll request you to contact us by phone. If you receive an email requesting sensitive information, do not respond and let us know immediately.
Similar Products
You may like
