LTC1530CS8-1.9#PBF

Special Purpose Regulators Overview

The LTC1530CS8-1.9#PBF is a synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates within a supply voltage range of 4.5V to 27V and features an internal 1.9V reference voltage. The device supports external N-channel MOSFETs for high-efficiency power conversion. It includes integrated bootstrap circuitry, soft-start functionality, and cycle-by-cycle current limiting. The component is housed in an 8-pin SOIC package and is designed for applications requiring precise voltage regulation.

Special Purpose Regulators Feature Summary

• Synchronous buck controller architecture supporting external N-channel MOSFETs
• Integrated bootstrap diode and driver circuitry for gate drive
• Built-in soft-start mechanism to limit inrush current during startup
• Cycle-by-cycle current limiting protection for overload safety

Special Purpose Regulators Applications

• Controller for Intel Pentium II processor power supplies
• Power management for AMD-K6-2 processor platforms
• General-purpose point-of-load DC-DC conversion modules

Special Purpose Regulators Procurement Notes

Verify the specific suffix -1.9#PBF to confirm the fixed 1.9V reference output. Confirm RoHS compliance status through official manufacturer documentation. Check for active lifecycle status as availability may vary by region. Ensure compatibility with external MOSFET selection based on thermal requirements.

Special Purpose Regulators Selection Notes

Select this component when designing synchronous step-down converters requiring a fixed 1.9V reference. Evaluate external MOSFET Rds(on) to minimize conduction losses. Consider the input voltage range up to 27V for system compatibility. Verify that the required output current matches the capabilities of the chosen external switches and inductor.

Special Purpose Regulators Part Context

This part belongs to the LTC1530 family of switching regulators. It is specifically tailored for legacy processor power architectures. The CS8 designation indicates the commercial temperature grade and SOIC-8 package type. It serves as a core control element in multi-phase or single-phase VRM designs.

Special Purpose Regulators Replacement Considerations

Direct replacements are limited due to the specific 1.9V reference and legacy processor targeting. Review newer synchronous controllers from Analog Devices with adjustable references if flexibility is required. Ensure pinout compatibility before substituting with other 8-pin SOIC regulators.