LX1682IDM

DC DC Switching Controllers Overview

The LX1682IDM is a monolithic pulsewidth modulator controller IC designed for flexible, low-cost buck regulator supplies. It operates with a fixed switching frequency of 190kHz and requires a 5V supply voltage (Vcc/Vdd). The device features current limit and soft start control characteristics to ensure stable operation. It utilizes a voltage-mode PWM architecture and provides a single positive output stage via transistor drivers. The component is housed in an 8-SOIC package with a width of 3.90mm and supports surface mount installation. It functions within a temperature range of 0°C to 70°C.

DC DC Switching Controllers Feature Summary

• Implements a flexible, low-cost buck step-down regulator topology using voltage-mode PWM control.
• Integrates essential protection and stability features including current limiting and soft start capabilities.
• Provides a single positive output stage driven by internal transistor drivers for external power switches.

DC DC Switching Controllers Applications

• Buck (step-down) DC-DC converter designs
• General-purpose regulated power supply circuits
• Embedded system voltage regulation

DC DC Switching Controllers Procurement Notes

Verify the specific manufacturer designation as Microsemi Corporation or its successor entity, Microchip Technology, due to corporate acquisitions. Confirm the RoHS compliance status and environmental classification against current regulatory requirements. Check the part status carefully, as availability may be limited or discontinued depending on the source. Ensure the 8-SOIC package dimensions match the design constraints before finalizing procurement.

DC DC Switching Controllers Selection Notes

Select this component when a fixed 190kHz switching frequency is acceptable for the application's EMI and efficiency requirements. It is suitable for designs requiring basic current limit and soft start functionality without complex digital interfaces. Consider the 8-SOIC package size for PCB layout constraints. Evaluate thermal performance within the specified 0°C to 70°C operating range for the intended environment.

DC DC Switching Controllers Part Context

The LX1682IDM belongs to the LX1681/1682 family of monolithic PWM controllers. These devices are engineered to simplify the implementation of non-isolated DC-DC converters. The family shares similar architectural features, focusing on cost-effective solutions for standard voltage regulation tasks. The IDM suffix typically denotes the specific package type and pin configuration compatible with standard SOIC footprints.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should consult official distributor databases for cross-reference data from manufacturers such as Texas Instruments or ON Semiconductor, ensuring electrical parameters like switching frequency and control topology remain compatible.