BD6071HFN-TR

Overview

The BD6071HFN-TR is a white LED driver IC featuring a synchronous boost DC/DC converter. It operates within an input voltage range of 2.7 V to 5.5 V and delivers a constant output current of 35 mA per channel. The device supports up to three series-connected LEDs, boosting the output voltage to a maximum of 14 V. It functions at a switching frequency of 1 MHz and includes PWM brightness control capabilities. The component is housed in an 8-HSON package and is rated for operation between -30°C and +85°C.

Feature Summary

• Integrates a synchronous rectification boost converter eliminating the need for external Schottky diodes.
• Provides stable constant current drive for series-connected white LEDs with fast transient response.
• Supports external PWM pulse input for precise brightness adjustment.

Applications

• LED backlighting systems
• Camera flash lighting

Procurement Notes

Verify the active status of this component before integration, as it may be subject to lifecycle changes or obsolescence notices from Rohm Semiconductor. Confirm that the 8-HSON package dimensions and thermal requirements align with your PCB layout constraints. Ensure compatibility with the required input voltage range and check for any specific ordering suffixes if different packaging options are needed. Cross-reference the latest datasheet for updated electrical characteristics and recommended operating conditions.

Selection Notes

Select this driver when designing circuits requiring a compact solution for driving multiple white LEDs in series from a low-voltage source. The integrated synchronous rectification reduces component count and board space compared to asynchronous designs. Consider the 35 mA output current limit and 14 V maximum output voltage to ensure they match the forward voltage and current requirements of the target LED array. Verify that the 1 MHz switching frequency fits within the electromagnetic interference constraints of the application.

Part Context

This part belongs to the BD6071 series of LED drivers manufactured by Rohm Semiconductor. These devices are designed specifically for portable applications where space efficiency and power management are critical. The HSON package offers a small footprint suitable for dense PCB layouts. The series focuses on providing reliable constant current regulation for white LEDs using efficient boost topology.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.