| Customization: | Available |
|---|---|
| Conductive Type: | Bipolar Integrated Circuit |
| Integration: | MSI |
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The MCP73811T-420I/OT is a single-cell, fully integrated Li-Ion/Li-Polymer charge management controller from Microchip Technology. It is designed to manage the charging of single-cell lithium-ion or lithium-polymer batteries. Below are some key features and details about this device:
Charging Voltage: 4.20V (typical for single-cell Li-Ion/Li-Polymer batteries).
Charging Current: Programmable up to 500mA (external resistor sets the current).
Integrated Pass Transistor: No external MOSFET required.
Integrated Current Sense: No external sense resistor required.
Charge Termination: Automatically terminates charging when the battery reaches the desired voltage and current thresholds.
Preconditioning: Provides preconditioning for deeply discharged cells.
Safety Features:
Thermal regulation to prevent overheating.
Reverse discharge protection.
Overvoltage protection.
Package: SOT-23-5 (small form factor, suitable for space-constrained applications).
Operating Temperature Range: -40°C to +85°C.
Portable devices (e.g., smartphones, tablets, portable media players).
Bluetooth headsets and accessories.
Wearable devices.
Low-power embedded systems.
VDD: Input voltage pin (connected to the power supply).
VSS: Ground pin.
STAT: Status output pin (open-drain output to indicate charging status).
PROG: Programming pin (used to set the charging current with an external resistor).
VBAT: Battery connection pin (connected to the positive terminal of the battery).
The MCP73811T-420I/OT is commonly used in compact, battery-powered devices where space and efficiency are critical.
It simplifies the design of battery charging circuits by integrating most of the required components into a single chip.
For more detailed information, refer to the official datasheet from Microchip Technology. Let me know if you need help with circuit design or further details!
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