LTC1474CMS8-5#PBF

Voltage Regulators - DC DC Switching Regulators Overview

The LTC1474CMS8-5#PBF is a low quiescent current, high efficiency step-down DC/DC converter manufactured by Analog Devices Inc. It operates within an input voltage range of 3 V to 18 V and provides a fixed 5 V output at up to 320 mA. The device utilizes a current mode, constant off-time architecture with an internal P-channel power MOSFET. Key electrical parameters include a maximum propagation delay of 130 ns, a maximum clock frequency of 400 kHz, and a static current of 9 µA. It functions reliably between 0°C and +70°C in an MSOP-8 surface-mount package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates an internal P-channel power MOSFET for compact design
• Employs current mode, constant off-time control architecture
• Features ultra-low quiescent current for battery efficiency
• Includes shutdown capability for power management

Voltage Regulators - DC DC Switching Regulators Applications

• Portable instrumentation powered by single-cell batteries
• Battery-operated systems requiring high efficiency
• Industrial control modules with wide input voltage ranges
• Communication equipment needing stable 5V regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix #PBF indicates lead-free RoHS compliance before ordering. Confirm the MSOP-8 package dimensions match your PCB footprint requirements. Check current distributor availability as supply may be limited or restricted in certain regions. Ensure the fixed 5V output aligns with your system voltage needs, as other variants exist.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from a wide 3V to 18V input range. It is suitable for designs prioritizing low standby current due to its 9 µA static consumption. Consider the MSOP-8 package if space constraints preclude larger footprints. Verify that the 320 mA output current meets the load requirements of the target application circuit.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LTC1474 series of high-efficiency buck converters. It shares architectural similarities with other members like the LTC1474IS8-3.3#PBF but differs in output voltage and package type. The CMS8 designation specifies the commercial temperature range and MSOP-8 packaging, distinguishing it from industrial or wider-package variants within the same product family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LTC1474 variants such as LTC1474CMS8-3.3#PBF for different voltage outputs. Cross-reference with similar buck controllers from Analog Devices if pin compatibility is critical. Verify thermal performance and efficiency curves against alternative components for equivalent applications.