LTC3624IMSE-23.3#PBF

Voltage Regulators - DC DC Switching Regulators Overview

The LTC3624IMSE-23.3#PBF is a synchronous step-down DC-to-DC converter manufactured by Analog Devices Inc., housed in a 12-pin MSOP package with an exposed pad. It delivers a fixed 3.3V output at up to 2A. The device operates from an input voltage range of 2.7V to 17V and features a fixed 1MHz switching frequency with ±40% synchronization capability. Key electrical specifications include a typical efficiency of 95%, ultra-low quiescent current of 3.5µA, and operation across a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology for high efficiency
• Ultra-low quiescent current for battery applications
• Wide input voltage range compatibility
• Frequency synchronization capability

Voltage Regulators - DC DC Switching Regulators Applications

• Portable instrumentation power supplies
• Industrial control systems
• Battery-powered equipment
• Embedded computing modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when ordering. Confirm the IMSE variant matches the required thermal performance and package dimensions for your PCB layout. Ensure the fixed 3.3V output aligns with load requirements, as adjustable versions exist within the same family. Cross-reference the datasheet for exact pinout and thermal pad connections.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V rail is required with moderate current demands. The 1MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the 2A limit against peak load transients. The wide input range suits single-cell lithium or multi-cell battery configurations without complex pre-regulation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LTC3624 family of high-efficiency synchronous regulators. It shares architectural similarities with other members like the LTC3624EMSE-3.3 but differs in switching frequency and thermal grade. The IMSE designation specifies the industrial temperature range and MSOP package type, distinguishing it from extended or military variants.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LTC3624 variants with compatible output voltages, such as LTC3624IMSE-3.3#PBF for different voltage needs. Verify pin compatibility before swapping. Alternative families may require circuit redesign due to differing control architectures or thermal characteristics.

Voltage Regulators - DC DC Switching Regulators FAQ

Is the switching frequency adjustable?

No, the switching frequency is fixed at 1MHz. However, it can be synchronized to an external clock within a ±40% range.

What is the maximum output current?

The device supports a continuous output current of up to 2A.