BQ48SH-28X6NSH

Overview

The BQ48SH-28X6NSH is a Snaphat integrated circuit combining a lithium clock battery and a crystal oscillator. It provides a nominal voltage of 2.8 V with a capacity of 48 mAh. The device incorporates a 32.768 kHz crystal with a load capacitance of 6 pF. Designed for real-time clock applications, it offers a compact solution for timekeeping in electronic systems requiring reliable backup power and precise frequency generation within a single package.

Feature Summary

• Integrates a lithium coin cell battery and a quartz crystal oscillator into a single surface-mount component
• Provides stable 2.8 V output for continuous real-time clock operation
• Includes an on-board 32.768 kHz crystal with specified load capacitance

Applications

• Real-time clock circuits in consumer electronics
• Timekeeping modules in industrial control systems
• Backup power sources for memory retention in embedded devices

Procurement Notes

Verify the specific ordering suffix NSH to ensure correct packaging and compliance status. Confirm that the integrated battery type matches the thermal and operational requirements of the target application. Check datasheet specifications for storage conditions and shelf life limitations associated with the built-in lithium cell before finalizing procurement plans.

Selection Notes

Select this component when space constraints require a combined battery and crystal solution. Ensure the system voltage tolerance aligns with the 2.8 V nominal output. Consider the physical dimensions of the Snaphat package against available PCB area. Verify that the 6 pF load capacitance is compatible with the microcontroller or RTC interface requirements.

Part Context

This part belongs to Texas Instruments' Snaphat family of integrated clock components. These devices are designed to replace discrete battery and crystal assemblies, simplifying assembly processes. The BQ48SH series specifically targets applications needing reliable timekeeping with minimal board space consumption.

Replacement Considerations

Direct substitutes include other Snaphat variants from Texas Instruments with similar voltage and capacity ratings. Verify compatibility regarding pin configuration and mechanical footprint when considering alternative models.