LTC1475CMS8#PBF

Voltage Regulators - DC DC Switching Regulators Overview

The LTC1475CMS8#PBF is a low quiescent current, high efficiency step-down DC/DC converter manufactured by Analog Devices. It features an internal P-channel power MOSFET and utilizes a current mode, constant off-time architecture for stable regulation. The device operates with an input voltage range of 3V to 18V and provides a fixed 3.3V output at up to 0.3A. It achieves efficiencies up to 92.5% and includes a shutdown feature. The component is housed in an 8-pin MSOP package and supports operation within a temperature range of 0°C to 70°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates an internal P-channel power MOSFET driven by a current mode, constant off-time control architecture.
• Delivers high conversion efficiency with low quiescent current consumption for battery-powered applications.
• Includes a dedicated shutdown pin to minimize power usage during inactive periods.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring efficient step-down regulation
• Battery-operated systems needing extended runtime
• Embedded circuits utilizing 3.3V logic levels

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when sourcing from distributors. Confirm that the manufacturer is Analog Devices Inc. or Linear Technology. Ensure the part number matches the exact 3.3V fixed output variant. Check RoHS compliance status if required by your manufacturing standards. Validate the MSOP-8 package marking against official datasheets to prevent counterfeit substitution.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required from a wide input range up to 18V. It is suitable for designs prioritizing low standby current and high efficiency over adjustable output flexibility. Consider the 0.3A current limit for load requirements. The MSOP-8 package offers a compact solution for space-constrained PCB layouts compared to larger packages.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LTC1475 series of low quiescent current step-down converters. It shares architectural similarities with the LTC1474 but differs in output configuration and package options. The CMS8 designation specifies the commercial temperature range and MSOP-8 footprint. It serves as a power management IC within the broader PMIC category offered by Analog Devices.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LTC1475CMS8-3.3#TRPBF (Tape and Reel version)

Voltage Regulators - DC DC Switching Regulators FAQ

What control architecture does the LTC1475 use?

It uses a current mode, constant off-time architecture to switch the internal P-channel power MOSFET.

Does the LTC1475CMS8#PBF support adjustable output voltage?

No, this specific part number provides a fixed 3.3V output. Adjustable versions exist under different suffixes.