BD2812GU-E2

Overview

The BD2812GU-E2 is a two-channel RGB charge pump LED driver designed for illumination applications. It operates within an input voltage range of 2.7 V to 5.5 V and delivers a maximum total output current of 255 mA across six outputs. The device utilizes a charge pump topology with a switching frequency of 1 MHz, generating output voltages between 3.9 V and 4.8 V. It supports 7-bit DC dimming via I2C interface at a maximum transfer rate of 0.4 MHz. The IC functions reliably within an operating temperature range of -40°C to +85°C and is housed in a VCSP85H3-32 package.

Feature Summary

• Integrates dual RGB drivers with automatic boost magnification adjustment (1x, 1.5x, 2x) using a coil-less charge pump topology.
• Supports continuous illumination mode and single-cycle illumination mode without requiring CPU intervention.
• Includes independent external ON/OFF synchronizing terminals and slope control functions for independent channel management.

Applications

• Decorative lighting systems utilizing RGB LEDs
• Single-color LED decoration applications
• Illumination devices requiring low component count

Procurement Notes

Verify the specific suffix E2 against the original design specification to ensure compatibility with RoHS requirements and lead-free manufacturing processes. Confirm that the VCSP85H3-32 package dimensions align with the target PCB footprint. Validate that the I2C interface timing parameters meet the system controller's communication speed requirements before finalizing the procurement order.

Selection Notes

Select this component when designing decorative lighting circuits that require independent control of multiple RGB channels without magnetic components. The integrated charge pump eliminates the need for inductors, reducing board space and electromagnetic interference. Ensure the application environment stays within the specified thermal limits and that the I2C bus can support the required data transfer rates for smooth dimming operations.

Part Context

This part belongs to Rohm Semiconductor's RGB Charge Pump LED Driver series, specifically engineered for compact illumination solutions. It replaces discrete driver designs by integrating power stages and control logic into a single chip. The BD2812GU-E2 variant maintains standard performance characteristics while adhering to environmental compliance standards for consumer electronics manufacturing.

Replacement Considerations

BD2812GU