MCP73826-4.2VCHTR

Battery Chargers Overview

The MCP73826-4.2VCHTR is a single-cell lithium-ion battery charge management controller manufactured by Microchip Technology. It utilizes an external PMOS power transistor to manage the charging process, supporting both constant current and constant voltage algorithms. The device operates within a supply voltage range of 4.5V to 6.0V and features a low operating supply current of 260 µA. It includes programmable charge termination current and thermal regulation to prevent overheating during high-current charging phases.

Battery Chargers Feature Summary

• Integrates full charge management functions including constant current and constant voltage regulation for single-cell Li-Ion batteries
• Utilizes an external PMOS transistor to minimize power loss and improve efficiency compared to internal MOSFET solutions
• Includes automatic recharge function that restarts charging when battery voltage drops below the recharge threshold
• Features thermal regulation circuitry that reduces charge current if die temperature exceeds safe limits

Battery Chargers Applications

• Portable electronic devices requiring single-cell lithium-ion battery management
• Consumer electronics with space-constrained designs utilizing SOT-23-6 packaging
• Battery-powered equipment needing efficient charge termination and safety monitoring

Battery Chargers Procurement Notes

Verify the suffix CHTR indicates tape and reel packaging configuration. Confirm the 4.2V output setting matches the specific battery cell requirements. Ensure the external PMOS transistor selection aligns with the required charge current specifications. Check RoHS compliance status for environmental regulations. Validate the operating temperature range against the intended application environment.

Battery Chargers Selection Notes

Select this component when a low-cost, high-efficiency solution for single-cell Li-Ion charging is required. The use of an external PMOS allows for better thermal performance than integrated MOSFET controllers in high-current applications. Consider the SOT-23-6 package size constraints and the need for external pass element components. Evaluate the 260 µA standby current suitability for battery-operated systems.

Battery Chargers Part Context

This part belongs to the MCP73826 family of battery chargers from Microchip Technology. The family offers various output voltage options and packaging configurations. The MCP73826 series is designed for cost-sensitive applications where external power transistors are preferred for thermal management. Other variants may differ in output voltage precision or package type.

Battery Chargers Replacement Considerations

Direct substitutes include other MCP73826 variants with different output voltages such as MCP73826-4.1VCHTR. Cross-referencing with similar single-cell Li-Ion controllers from other manufacturers requires verifying pin compatibility and external component requirements.