SC654ULTRT

Overview

The SC654ULTRT is a DC-DC regulator and LED lighting driver IC manufactured by Semtech Corporation. It utilizes a switched capacitor charge pump topology to provide regulated output for backlight applications. The device features six independent outputs, each capable of delivering up to 25 mA of current. It operates within an input voltage range of 2.9 V to 5.5 V and supports PWM dimming control. The component is housed in a 14-pin MLPQ-UT package and is designed for surface-mount installation.

Feature Summary

• Integrates a charge pump topology for efficient voltage regulation without requiring external inductors
• Provides six individually regulated output channels for multi-LED backlight configurations
• Supports pulse-width modulation (PWM) dimming for precise brightness control

Applications

• Mobile phone LCD backlight systems
• Portable electronic device illumination
• Multi-zone LED lighting arrays

Procurement Notes

Verify the obsolete status of this component before design finalization. Confirm availability through authorized distributors or secondary markets. Ensure that any replacement strategy accounts for long-term supply constraints associated with end-of-life products. Cross-reference pinouts and electrical specifications carefully when substituting with newer generations from the manufacturer.

Selection Notes

Select this component for applications requiring multiple regulated LED channels from a single low-voltage source. The charge pump architecture eliminates the need for bulky inductors, saving board space. Consider the 25 mA per channel limit when determining total luminous output requirements. Verify compatibility with the system's PWM dimming frequency and input voltage stability.

Part Context

This part belongs to the SC6 series of LED drivers from Semtech. These devices are engineered for portable electronics where size and efficiency are critical. The SC654 variant specifically addresses the needs of displays requiring six distinct backlight zones. It represents a specialized solution within the broader portfolio of power management and signal integrity products offered by the manufacturer.

Replacement Considerations

Public confirmed substitute part numbers: None available.