LTC1475CMS8#TRPBF

Voltage Regulators - DC DC Switching Regulators Overview

The LTC1475CMS8#TRPBF is a low quiescent current, high-efficiency step-down (buck) DC/DC converter manufactured by Analog Devices. It operates with an input voltage range of 3V to 18V and delivers a fixed 3.3V output at up to 0.3A. The device utilizes a current-mode, constant off-time architecture to control an internal P-channel power MOSFET. Key electrical specifications include a typical efficiency of 92.5%, a quiescent current of 9µA, and operation within a commercial temperature range of 0°C to 70°C. It is housed in an 8-lead MSOP package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a P-channel power MOSFET for simplified external component requirements
• Employs current-mode, constant off-time architecture for stable regulation
• Designed for high efficiency with minimal quiescent current consumption

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered portable equipment requiring efficient voltage regulation
• General-purpose step-down conversion in embedded systems
• Industrial control modules operating from higher voltage rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix #TRPBF confirms tape-and-reel packaging when sourcing. Confirm the fixed 3.3V output variant matches the design requirement, as other output voltages exist within the LTC1475 family. Check manufacturer documentation for current lifecycle status and availability constraints, as supply may be limited or subject to allocation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required from an input range of 3V to 18V. It is suitable for designs prioritizing low standby current and high efficiency over adjustable output flexibility. Ensure the application does not require synchronous rectification or wider industrial temperature ranges, which are available in other Analog Devices regulator families.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LTC1475 series of low quiescent current step-down converters. It shares the same core architecture and MSOP-8 package form factor with variants offering different fixed output voltages, such as 5V or adjustable outputs. The series is characterized by its use of an internal P-channel switch and constant off-time control mode.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct functional substitutes within the same package and pinout include other LTC1475 variants with matching output voltages if available. For broader compatibility, consider the LTC1474 series, though it may differ in quiescent current and switching frequency characteristics.