LTC4069EDC-4.4#TRMPBF

Battery Chargers Overview

The LTC4069EDC-4.4#TRMPBF is a standalone lithium-ion battery charger integrated circuit manufactured by Analog Devices Inc. It is designed for single-cell Li-Ion batteries with a fixed 4.4V charge voltage termination. The device supports a maximum programmable charging current of 750mA and operates within an input voltage range up to 5.5V. It utilizes a compact 6-WFDFN (2x2 mm) package with an exposed pad for thermal management. The component includes integrated NTC thermistor input for temperature monitoring during the charging cycle, ensuring safe operation under varying thermal conditions.

Battery Chargers Feature Summary

• Integrates NTC thermistor input for continuous battery temperature monitoring during charging cycles
• Provides fixed 4.4V termination voltage specifically configured for specific lithium-ion cell chemistries
• Features programmable constant-current charging capability up to 750mA via external resistor
• Utilizes compact 2mm x 2mm DFN package with exposed thermal pad for efficient heat dissipation

Battery Chargers Applications

• Single-cell lithium-ion battery charging in portable consumer electronics
• Medical devices requiring precise battery management and temperature safety
• Industrial handheld instruments with limited board space constraints
• IoT sensors and modules utilizing small form-factor power sources

Battery Chargers Procurement Notes

Verify the specific suffix configuration against the manufacturer's latest datasheet to ensure compatibility with system requirements. Confirm that the 4.4V fixed output voltage aligns with the target battery chemistry specifications. Check for RoHS3 compliance status as per current manufacturing standards. Ensure ordering quantities match available packaging options such as tape and reel or cut tape formats provided by distributors.

Battery Chargers Selection Notes

Select this component when a dedicated single-cell charger with integrated thermal protection is required. The fixed 4.4V output makes it suitable for cells requiring this specific termination voltage rather than standard 4.2V cells. Consider the 750mA current limit when designing for fast-charging applications. The DFN package requires adequate PCB copper area for thermal relief to maintain reliability under high load conditions.

Battery Chargers Part Context

This part belongs to the LTC4065/LTC4069 family of standalone battery chargers from Analog Devices. While sharing similar pinouts and functionality with the LTC4065 series, the LTC4069 variant distinguishes itself by including an NTC thermistor input pin for enhanced safety monitoring. This family targets applications where board space is limited and integrated thermal management is critical for battery longevity and safety.

Battery Chargers Replacement Considerations

The LTC4065EDC-4.4#TRMPBF serves as a functional substitute if NTC thermistor monitoring is not required in the design. Both components share identical pinouts and mechanical dimensions, facilitating direct replacement on existing PCB layouts. Verify that the absence of NTC support in the alternative does not violate safety regulations for the specific application environment.