LTC3621IMS8E-2#TRPBF

Voltage Regulators - DC DC Switching Regulators Overview

The LTC3621IMS8E-2#TRPBF is a synchronous step-down regulator from Analog Devices, housed in an MSOP-8 package. It operates with an input voltage range of 2.7 V to 17 V and provides a fixed output voltage of 1.2 V at up to 1 A load current. The device features a fixed switching frequency of 1 MHz or 2.25 MHz with a ±40% synchronization range. Key electrical parameters include a quiescent current of 3.5 µA, efficiency up to 95%, and a load regulation of 0.1%. It supports forced continuous mode operation and functions within a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology for high efficiency across wide output voltage ranges
• Ultra-low quiescent current capability for battery-powered applications
• Fixed internal switching frequencies with external synchronization options
• Integrated shutdown control for power management

Voltage Regulators - DC DC Switching Regulators Applications

• Portable instrumentation requiring low standby power
• Battery-operated systems needing efficient voltage conversion
• Industrial control boards utilizing 1.2V logic supplies
• Communication equipment power stages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the manufacturer is Analog Devices Inc. Ensure the part number matches the exact output voltage configuration required for your design. Cross-reference the MSOP-8 package dimensions against your PCB footprint specifications before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.2V output is required from a 2.7V to 17V input source. Consider the 1A current limit and 1MHz/2.25MHz switching frequencies for EMI and size trade-offs. Evaluate the 3.5µA quiescent current against system sleep requirements. Ensure thermal management suits the MSOP-8 package for the expected load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LTC3621 family of synchronous step-down regulators. Variants in this series differ primarily by fixed output voltage settings and package options. The IMS8E designation specifies the industrial temperature grade and MSOP-8 package type. The #TRPBF suffix denotes the reel packaging format for automated assembly.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements must match the 1.2V fixed output, 1A current rating, and MSOP-8 package. Verify compatibility with 2.7V-17V input ranges and similar quiescent current specifications. Check if alternative parts support the same switching frequency options and synchronization capabilities.