LTC3642EDD-3.3#TRPBF

Voltage Regulators - DC DC Switching Regulators Overview

The LTC3642EDD-3.3#TRPBF is a high-efficiency, high-voltage synchronous step-down DC/DC converter manufactured by Analog Devices Inc. It operates with an input voltage range of 4.5V to 45V and provides a fixed 3.3V output at up to 50mA. The device features internal high-side and synchronous power switches, drawing only 12µA typical quiescent current at no load while maintaining regulation. It utilizes an 8-lead DFN package and supports adjustable switching frequencies.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates internal high-side and synchronous power switches for high efficiency
• Maintains output voltage regulation with ultra-low no-load supply current
• Supports adjustable switching frequency for design flexibility

Voltage Regulators - DC DC Switching Regulators Applications

• High voltage step-down conversion in industrial systems
• Power management for automotive applications requiring wide input ranges
• Battery-powered devices needing efficient voltage regulation from higher voltage sources

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the fixed 3.3V output version matches the design requirement, as other output voltages exist within the LTC3642 family. Ensure the 8-DFN package footprint aligns with the PCB layout specifications before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range up to 45V is required alongside low standby power consumption. The synchronous buck topology offers superior efficiency compared to non-synchronous alternatives. Consider the 50mA output current limit suitable for low-power control circuits rather than high-current loads.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LTC3642 series of high-efficiency, high-voltage synchronous step-down converters. The series is designed for applications requiring operation from high input voltages down to standard logic levels. The EDD suffix denotes the 8-lead DFN package variant.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other parts within the LTC3642 family with different output voltages or packaging options, such as LTC3642EDD-5 or LTC3642IMS8E-3.3, provided the electrical parameters meet the system requirements.