LV2209

Overview

The LV2209 is a dual DC-DC converter IC manufactured by onsemi, designed for automotive display backlighting applications. It integrates two independent boost converters capable of driving high-voltage LED strings from a low-voltage battery source. The device operates within an input voltage range of 6V to 18V and supports output voltages up to 45V per channel. Key electrical parameters include a switching frequency of 300kHz and a maximum output current of 1A per channel. It features integrated protection mechanisms such as over-current protection, thermal shutdown, and open/short LED detection. The component is housed in a compact HTSSOP-28 package suitable for space-constrained automotive environments.

Feature Summary

• Dual independent boost converter channels for flexible LED string configuration
• Integrated diagnostic functions including open and short circuit detection
• Automotive-grade reliability with extended temperature range support
• Built-in protection against over-current and thermal overload conditions

Applications

• Automotive instrument cluster backlighting
• Infotainment system display illumination
• High-brightness LED headlight modules
• Ambient interior lighting systems

Procurement Notes

Verify the specific suffix code (e.g., -G) to confirm lead-free status and RoHS compliance when sourcing. Ensure the package type matches the PCB footprint requirements. Cross-reference the manufacturer's latest datasheet revision to confirm pinout compatibility and updated electrical specifications before finalizing procurement orders.

Selection Notes

Select this component based on the required number of LED strings and total forward voltage. Verify that the input voltage range aligns with the vehicle's power supply characteristics. Consider the thermal management requirements given the power dissipation at higher load currents. Confirm that the switching frequency does not interfere with sensitive RF circuits in the application.

Part Context

This part belongs to onsemi's automotive LED driver portfolio, specifically targeting display and lighting solutions. It complements other single-channel drivers by offering dual independent control. The series is designed to meet stringent automotive quality standards and functional safety requirements common in modern vehicle electronics architectures.

Replacement Considerations

Direct replacements may include the LV2210 or LV2211 if additional channels or different current ratings are needed. Verify pin-to-pin compatibility and electrical parameter equivalence before substitution. Consult the manufacturer's cross-reference guide for qualified alternative packages or enhanced feature sets.