LA5797MC-BH

Voltage Regulators - DC DC Switching Regulators Overview

The LA5797MC-BH is a monolithic linear integrated circuit designed as a charge pump step-up power supply for variable capacitance diodes. It operates with a supply voltage of 24V and utilizes a DC to DC boost topology. The device functions as a dedicated power source to drive varactor diodes, enabling voltage adjustment through internal charge pumping mechanisms without requiring external inductors.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated charge pump architecture for efficient voltage boosting
• Monolithic linear IC design simplifying circuit implementation
• Dedicated functionality for variable capacitance diode biasing

Voltage Regulators - DC DC Switching Regulators Applications

• Variable capacitance diode charge pump step-up power supply
• Tuning circuits requiring high voltage bias for varactors

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix BH against official onsemi documentation to confirm package type and temperature range. Ensure compatibility with the 24V operating environment specified for this charge pump application. Cross-reference the part number with current datasheets to confirm availability status and any recent revisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution for driving variable capacitance diodes is required. It is suitable for applications needing a boosted voltage from a lower supply rail using a charge pump topology. Consider the monolithic nature for space-constrained designs where external inductors are undesirable.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LA5797 series of specialized power management ICs from onsemi. These devices are engineered specifically for RF and tuning applications involving varactor diodes. The series provides integrated solutions for generating the necessary bias voltages efficiently.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-to-pin replacements within the LA5797 family. Verify if other charge pump ICs from different manufacturers meet the 24V requirement and varactor drive specifications before substitution.