LT8491IUKJ#PBF

Battery Chargers Overview

The LT8491IUKJ#PBF is a Buck-Boost switching regulator battery charger IC from Analog Devices Inc., designed for high-voltage applications. It supports an input voltage range of 6V to 80V and a battery voltage range of 1.3V to 80V, allowing operation where the input is higher than, lower than, or equal to the battery voltage. The device features a single inductor topology and operates at a synchronous fixed frequency between 100kHz and 400kHz. It utilizes a 64-pin QFN package measuring 7mm x 11mm with a height of 0.75mm.

Battery Chargers Feature Summary

• Integrates automatic Maximum Power Point Tracking (MPPT) logic optimized for solar-powered charging applications
• Provides automatic temperature compensation by sensing external thermistors coupled to the battery
• Supports I2C telemetry and configuration with internal EEPROM for persistent data storage
• Delivers standard Constant Current/Constant Voltage (CCCV) charging curves compatible with multiple battery chemistries

Battery Chargers Applications

• Solar-powered battery chargers
• Multi-chemistry lead-acid battery charging systems
• Lithium-ion battery charging solutions
• Industrial equipment with integrated battery backup
• Portable military equipment requiring robust power management

Battery Chargers Procurement Notes

Verify the specific suffix 'I' indicates industrial temperature grade specifications and '#PBF' confirms lead-free RoHS compliance during procurement. Confirm the 64-QFN package dimensions match the PCB footprint requirements. Ensure the selected variant aligns with the required operating temperature range and that the I2C interface compatibility matches the host controller design constraints.

Battery Chargers Selection Notes

Select this component when the power source voltage fluctuates significantly relative to the battery voltage, necessitating a Buck-Boost topology. It is suitable for designs requiring precise solar energy harvesting through integrated MPPT algorithms. Consider the 64-pin QFN package size for thermal management and board space constraints. Verify that the required charging profile supports the target battery chemistry without additional external circuitry complexity.

Battery Chargers Part Context

The LT8491 belongs to a family of high-voltage battery charge controllers designed for demanding environments. It distinguishes itself by combining a Buck-Boost converter with intelligent solar tracking capabilities. The device simplifies system design by integrating feedback loops and protection mechanisms typically found in discrete solutions, making it a central component for autonomous power systems.

Battery Chargers Replacement Considerations

LT8491EUKJ#PBF: Equivalent part with commercial temperature grade instead of industrial grade.