RT8555BWSC

Overview

The RT8555BWSC is a high-efficiency white LED driver IC manufactured by Richtek USA Inc. It integrates a six-output DC-DC step-up regulator designed for single or two-cell battery inputs. The device supports analog and PWM dimming control with a regulated output current of 35mA. Packaged in a 20-pin WLCSP, it drives LED light bars containing six strings.

Feature Summary

• Integrates a six-output DC-DC step-up regulator for driving multiple LED strings
• Supports both analog and PWM dimming control methods
• Optimized for single or two-cell battery input applications

Applications

• Driving LED light bars with six strings
• Portable devices powered by single or two-cell batteries

Procurement Notes

Verify the exact part number RT8555BWSC against official Richtek documentation to confirm specifications. Ensure compatibility with system requirements for six-output regulation and 35mA current drive. Check RoHS compliance status as indicated in manufacturer datasheets before procurement.

Selection Notes

Select this component for applications requiring a compact solution for multi-string LED arrays. The integrated six-output regulator simplifies design compared to discrete solutions. Ensure the input voltage range matches the battery configuration and that dimming interface requirements align with analog or PWM capabilities.

Part Context

This part belongs to Richtek's line of high-efficiency white LED drivers. It is specifically engineered for portable electronics where space constraints and power efficiency are critical. The WLCSP package offers a small footprint suitable for modern mobile devices.

Replacement Considerations

Consult official Richtek documentation for verified substitute part numbers. Do not assume cross-compatibility with other LED drivers without verifying pinout, electrical parameters, and thermal characteristics.