XC6808B4C28R-G

Overview

The XC6808B4C28R-G is a single-cell lithium-ion or lithium-polymer battery linear charger IC from Torex Semiconductor. It features a fixed output voltage of 4.2V and a maximum charge current of 40mA. The device operates within an input supply voltage range of 4.5V to 6V. It includes built-in thermistor detection for battery temperature monitoring, overcurrent protection, overtemperature protection, and reverse current prevention. The component is housed in a 6-USP-B07 (1.8x2mm) surface-mount package and supports operation across a temperature range of -40°C to +85°C.

Feature Summary

• Integrated thermistor detect function for monitoring battery temperature during charging
• Built-in protection mechanisms including overcurrent, overtemperature, and reverse current prevention
• Supports constant-current/constant-voltage charging profiles for single-cell Li-ion and Li-Po batteries

Applications

• Single-cell lithium-ion battery charging in portable electronic devices
• Lithium-polymer battery management in compact consumer electronics
• Temperature-aware charging systems requiring integrated thermal monitoring

Procurement Notes

Verify the exact output voltage specification against the official datasheet, as the XC6808 series offers multiple variants with different fixed output voltages such as 4.2V, 4.35V, and 4.40V. Confirm that the 4.2V setting matches your battery chemistry requirements. Ensure the 6-USP-B07 package footprint aligns with your PCB layout design before finalizing procurement.

Selection Notes

Select this component when a low-cost, single-cell linear charger with integrated thermal protection is required. The 40mA output current suits small-capacity batteries or trickle-charging applications. Verify compatibility with the system's input voltage range of 4.5V to 6V. Consider the USP-6B07 package size constraints for space-limited designs.

Part Context

This part belongs to the XC6808 series of single-cell linear charger ICs from Torex Semiconductor. The series is designed for lithium-ion and lithium-polymer batteries, offering various fixed output voltage options and package configurations. The XC6808B4C28R-G specifically provides a 4.2V output in a compact 6-pin USP package.

Replacement Considerations

XC6808A3C28R-G and XC6808A4C38R-G are listed as parameter-equivalent alternatives by distributors.