LTC3621IMS8E-23.3#TRPBF

Voltage Regulators - DC DC Switching Regulators Overview

The LTC3621IMS8E-23.3#TRPBF is a high-efficiency, synchronous monolithic step-down regulator from Analog Devices Inc., housed in an MSOP-8 package. It operates with an input voltage range of 2.7 V to 17 V and delivers a fixed output voltage of 1.2 V at up to 1 A output current. The device features a fixed switching frequency of 1 MHz with a ±40% synchronization range. It achieves efficiencies up to 95% and maintains ultra-low quiescent current of 3.5 µA. The regulator 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 providing high efficiency across wide output voltage ranges
• Ultra-low quiescent current for optimized power consumption in standby modes
• Fixed 1 MHz switching frequency with external synchronization capability
• Forced continuous conduction mode ensuring stable operation under light loads

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered equipment requiring efficient voltage regulation
• Industrial control systems utilizing single-supply architectures
• Embedded systems needing low-noise power delivery for sensitive analog circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing components. Confirm that the IMS8E designation corresponds to the industrial temperature grade (-40°C to +125°C) required for your application environment. Ensure compatibility with the 1.2 V fixed output specification, as other variants in the LTC3621 family offer adjustable or different fixed outputs. Cross-reference the manufacturer's latest datasheet for any updates on pinout or thermal characteristics before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.2 V output is required from a 2.7 V to 17 V input source. The 1 A current capacity suits moderate load applications. Consider the MSOP-8 package size constraints and the need for external inductor selection based on the 1 MHz frequency. Evaluate thermal performance requirements given the industrial temperature range and power dissipation at full load.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LTC3621 family of synchronous step-down regulators designed for high efficiency and low quiescent current. The family includes variants with different output voltages and switching frequencies. The IMS8E package variant is specified for industrial temperature operations, distinguishing it from commercial grade options.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include other LTC3621 variants with compatible output voltages and current ratings, such as LTC3621EMS8E-23.3 or LTC3621IMS8E-2, provided the output voltage matches the system requirement. Verify pin-to-pin compatibility and thermal performance similarities before substitution.