BU90030G-TR

Overview

The BU90030G-TR is a single-output LED driver IC manufactured by ROHM Semiconductor, classified under PMIC. It utilizes a switching capacitor (charge pump) topology to regulate output voltage. The device supports an input supply voltage range from 2 V to 4 V and delivers a maximum output current of 80 mA per channel. It operates at a switching frequency of 1.5 MHz and features dimming control capabilities. The component is housed in a 6-SSOP package with SC-74/SOT-457 footprint dimensions.

Feature Summary

• Integrates a charge pump topology for efficient step-up voltage regulation suitable for LED driving applications.
• Provides adjustable dimming functionality to control LED brightness levels effectively.
• Features internal switching elements to minimize external component count and simplify circuit design.

Applications

• LED backlighting systems requiring low-voltage operation
• Portable electronic devices utilizing charge pump based LED drivers
• General purpose LED illumination circuits

Procurement Notes

Verify the part status carefully as this item is marked as discontinued or end-of-life. Confirm availability through authorized distributors only, as stock may be limited or exhausted. Ensure that the 6-SSOP package and pinout match your existing PCB layout requirements before procurement. Check for alternative replacement components if long-term supply stability is required for production.

Selection Notes

Select this component when a compact solution for driving LEDs from low voltage sources is needed. The 80 mA output current limit defines the maximum LED load capacity. Consider the 1.5 MHz switching frequency for EMI management and filter design. The SSOP-5/6 package size constraints must align with board space limitations. Verify thermal dissipation requirements given the power dissipation characteristics.

Part Context

This part belongs to the BU90030 series of LED driver ICs from ROHM Semiconductor. It is designed specifically for applications requiring regulated current drive from low voltage batteries or supplies. The charge pump architecture allows it to operate efficiently even when the input voltage is close to the LED forward voltage drop.

Replacement Considerations

BD53E30G-TR is not a direct functional substitute as it is a voltage detector. No officially confirmed direct substitute part numbers are provided in the source data for this specific LED driver model.