LT3651IUHE-8.2#PBF

Battery Chargers Overview

The LT3651IUHE-8.2#PBF is a monolithic 4A high-voltage two-cell lithium-ion/polymer battery charger from Analog Devices Inc. It operates within a 9V to 32V input voltage range and utilizes an efficient average current mode synchronous switch regulator for constant current and constant voltage charging. The device is housed in a 36-lead QFN (5x6mm) package, rated for industrial temperatures from -40°C to 125°C, and supports Li-Ion and Li-Polymer chemistries.

Battery Chargers Feature Summary

• Integrates a synchronous buck converter with average current mode control for high efficiency
• Supports wide input voltage range suitable for various power sources
• Includes programmable charge termination and thermal regulation features

Battery Chargers Applications

• Portable medical devices requiring reliable dual-cell battery management
• Industrial handheld equipment operating on wide DC input voltages
• Consumer electronics utilizing two-series lithium-ion or polymer batteries

Battery Chargers Procurement Notes

Verify the specific suffix '#PBF' indicates lead-free RoHS compliance when sourcing. Confirm the 'U' designation corresponds to the industrial temperature grade (-40°C to 125°C). Ensure the ordering part number matches the exact output voltage setting required for the target battery pack configuration.

Battery Chargers Selection Notes

Select this component for applications requiring a single-chip solution for two-cell series configurations. The fixed 4A charge current suits moderate capacity packs. Consider the 36-QFN package size for space-constrained designs. Verify that the system input voltage remains within the 9V to 32V operational window.

Battery Chargers Part Context

This part belongs to the LT3651 family of high-voltage battery chargers. Variants such as LT3651-4.X handle single cells, while LT3651-8.X manage two cells. The IUHE suffix denotes the industrial temperature range and QFN packaging, distinguishing it from lower-grade or alternative package options.

Battery Chargers Replacement Considerations

Direct substitutes include other LT3651 variants like LT3651IUHE-8.4#PBF if different voltage settings are needed. Cross-family replacements require verifying pin compatibility and charge current specifications.