LTC3851EMSE#PBF

DC DC Switching Controllers Overview

The LTC3851EMSE#PBF is a synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4.5V to 22V and supports output voltages as low as 0.6V. The device utilizes a constant frequency current mode architecture with a phase-lockable switching frequency up to 750kHz. It is designed to drive all N-channel synchronous power MOSFETs, enabling high efficiency in compact designs. The component is housed in a 16-lead MSOP package.

DC DC Switching Controllers Feature Summary

• Drives all N-channel synchronous power MOSFET stage for optimized efficiency
• Constant frequency current mode architecture allows phase-lockable operation
• Supports pulse skip operation for improved light-load performance

DC DC Switching Controllers Applications

• Point-of-load regulation in distributed power systems
• High-efficiency DC-to-DC conversion for industrial equipment
• Power supply stages requiring synchronized multi-phase operation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free tape and reel or tube packaging depending on the distributor's standard configuration. Confirm the operating temperature grade matches the design requirements, as the EMSE variant typically denotes extended temperature ranges. Ensure compatibility with external MOSFET gate drive requirements before finalizing procurement specifications.

DC DC Switching Controllers Selection Notes

Select this controller when designing buck converters requiring synchronization to an external clock or master controller. It is suitable for applications needing wide input voltage ranges and high output currents driven by external N-channel MOSFETs. Consider the thermal performance of the MSOP package and ensure adequate PCB layout for high-frequency switching nodes.

DC DC Switching Controllers Part Context

This component belongs to the LTC3851 family of synchronous step-down controllers. Variants such as the LTC3851A offer enhanced accuracy, while different suffixes indicate package types or automotive qualification. The EMSE designation specifies the 16-lead MSOP EP package form factor used in space-constrained designs.

DC DC Switching Controllers Replacement Considerations

Direct replacements include other parts from the LTC3851 family, such as the LTC3851AIMSE#PBF for automotive-grade requirements. Verify pinout compatibility and control interface similarities when substituting with other Analog Devices synchronous buck controllers.