LTC3490ES8#PBF

LED Driver IC Overview

The LTC3490ES8#PBF is a single-cell LED driver IC designed for portable applications. It operates from one or two NiMH or alkaline cells, providing constant current drive for 1W LEDs. The device functions as a high-efficiency boost converter with an integrated synchronous rectifier. Key electrical parameters include a 350mA output current capability and a switching frequency of 1.3MHz. It supports analog dimming and operates within a temperature range of -40°C to +85°C. The input voltage range spans 1V to 3.2VDC, while the output voltage ranges from 2.8V to 4V.

LED Driver IC Feature Summary

• Integrates a high-efficiency boost converter with synchronous rectification for optimized power conversion in portable devices.
• Provides precise constant current regulation suitable for driving high-power single-segment LEDs.
• Supports analog dimming control for adjustable brightness levels without additional components.

LED Driver IC Applications

• Portable handheld device illumination
• Single-cell battery-powered lighting systems
• Consumer electronics requiring compact LED drivers

LED Driver IC Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Request original manufacturer datasheets and test reports to confirm compliance with specified electrical characteristics. Ensure packaging integrity matches the SOIC-8 tube format. Cross-reference ordering suffixes to match exact specifications. Maintain supply chain documentation for quality assurance purposes.

LED Driver IC Selection Notes

Select this component when designing circuits powered by single-cell batteries requiring efficient boost conversion. Consider the 350mA current limit and 1.3MHz frequency for thermal management and EMI constraints. Evaluate the analog dimming interface against system control requirements. Compare physical dimensions and pinout compatibility with existing PCB layouts before finalizing the design.

LED Driver IC Part Context

This part belongs to the Linear Technology (now Analog Devices) portfolio of power management solutions. It is specifically engineered for low-voltage, high-efficiency LED driving applications. The ES8 package denotes an 8-pin SOIC footprint, facilitating surface-mount assembly. It complements other DC-DC converters in the company's extensive PMIC lineup.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence carefully if considering alternative manufacturers. Check pinout compatibility and electrical parameter overlaps before substitution.