BD9394EFV-E2

Overview

The BD9394EFV-E2 is a white LED driver IC designed for large LCD panels, utilizing a boost DC-DC converter topology. It features four independent output channels capable of delivering up to 150 mA per channel with constant current regulation. The device operates within an input voltage range of 9 V to 35 V and supports adjustable output voltages. It integrates analog and PWM dimming capabilities for precise brightness control. The component functions at a switching frequency of 150 kHz and is housed in a 24-pin HTSSOP-B package. It operates reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates four independent constant current outputs for multi-string LED driving
• Supports both analog and PWM dimming methods for flexible brightness control
• Utilizes a boost topology suitable for high-voltage LED string applications
• Includes protection mechanisms against overcurrent and thermal conditions

Applications

• White LED backlighting for large LCD panels
• Commercial display systems requiring multi-zone lighting
• Industrial monitor backlight drivers
• High-brightness LED array power management

Procurement Notes

Verify the specific suffix E2 for environmental compliance status before procurement. Confirm that the HTSSOP-B package matches the target PCB footprint requirements. Check current lifecycle status as some variants may be marked as Not Recommended for New Designs (NRND). Ensure supply chain sources provide valid RoHS documentation consistent with the manufacturer's latest declarations.

Selection Notes

Select this component when designing systems requiring four independent LED strings driven from a single boost converter. It is appropriate for applications needing combined analog and digital dimming control. Consider the 150 mA output limit per channel when sizing LED arrays. The wide input voltage range accommodates various battery or bus power sources common in portable and fixed displays.

Part Context

This part belongs to ROHM’s specialized LED lighting driver series, targeting high-performance display backlights. It complements other BD93xx series components by offering multi-channel integration in a compact surface-mount package. The design focuses on efficiency and reliability for commercial and industrial LCD applications where uniform illumination is critical.

Replacement Considerations

Check for direct pin-compatible substitutes within the BD9394 family if availability is constrained. Verify that alternative parts support the same 150 mA output current and boost topology. Ensure replacement options maintain compatibility with existing analog and PWM dimming control signals used in the circuit design.