LX1555CDM

DC DC Switching Controllers Overview

The LX1555CDM is a DC-DC switching controller from the LX155X family, designed for offline converter applications. It implements current mode control with an ultra-low start-up current of 250µA maximum. The device supports Buck and Boost topologies with a single positive output configured as a transistor driver. It operates within a supply voltage range of 7.6V to 30V and features a maximum duty cycle of 48%. The component utilizes synchronous rectification and frequency control characteristics. It is housed in an 8-SOIC package (0.154 inch width) and functions across a temperature range of -40°C to 85°C.

DC DC Switching Controllers Feature Summary

• Implements current mode control architecture for precise regulation
• Features ultra-low start-up current to enhance energy efficiency
• Supports both Buck and Boost conversion topologies
• Incorporates synchronous rectification for improved performance

DC DC Switching Controllers Applications

• Offline converter systems
• Buck-Boost power supply designs
• Energy-efficient DC-DC conversion circuits

DC DC Switching Controllers Procurement Notes

Verify component status carefully as this part is classified as obsolete by the manufacturer. Confirm availability through secondary distributors if sourcing is required. Ensure compatibility with existing design specifications before procurement. Check for potential tariff implications when shipping to specific regions. Validate that alternative components meet all electrical requirements.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring low start-up current and flexible buck-boost topology. Consider the 8-SOIC package constraints for PCB layout. Evaluate the 7.6V to 30V supply range against system requirements. Assess the need for synchronous rectification benefits. Verify thermal management capabilities within the specified operating temperature range.

DC DC Switching Controllers Part Context

The LX1555CDM belongs to the LX155X series of power management ICs manufactured by Microsemi Corporation. This family focuses on offline converter efficiency through advanced current mode control techniques. The CD suffix typically denotes commercial temperature grade variants within the product line. These controllers are engineered for demanding power conversion environments requiring reliability and precision.

DC DC Switching Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the component is obsolete, engineers must identify equivalent devices based on pin compatibility and electrical specifications. Review datasheets for comparable current mode controllers with similar buck-boost capabilities.