LTC3851AEGN#PBF

DC DC Switching Controllers Overview

The LTC3851AEGN#PBF is a high-performance synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4V to 38V and supports a switching frequency between 250kHz and 750kHz. The device utilizes a constant frequency current mode architecture and features a 16-SSOP package. Key electrical parameters include a maximum duty cycle of 99% and an operating supply voltage of 4V to 38V. It is designed for industrial applications with a specified temperature range of -40°C to 85°C.

DC DC Switching Controllers Feature Summary

• Drives all N-channel synchronous power MOSFET stages for high efficiency
• Features OPTI-LOOP compensation for optimized transient response across wide output capacitance ranges
• Supports phase-lockable frequencies up to 750kHz via external clock synchronization

DC DC Switching Controllers Applications

• Industrial distributed power systems
• Point-of-load (POL) regulation
• Telecommunications infrastructure power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging when sourcing. Confirm the A-grade designation matches required performance specifications. Ensure the 16-SSOP footprint aligns with the target PCB layout. Cross-reference the manufacturer's latest datasheet for any design changes or obsolescence notices prior to finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring precise current mode control and high efficiency in compact form factors. The adjustable frequency range allows optimization for EMI and component size trade-offs. Verify that the external MOSFET selection supports the required current levels and gate drive characteristics provided by the controller outputs.

DC DC Switching Controllers Part Context

This part belongs to the LTC3851 family of synchronous buck controllers, which are engineered for demanding power conversion tasks. The family shares core architectural features such as OPTI-LOOP compensation and flexible frequency options. Variations within the family typically differ in package types, thermal ratings, or specific grade classifications while maintaining identical functional pinouts.

DC DC Switching Controllers Replacement Considerations

Direct replacements include other variants within the LTC3851 series, such as the LTC3851EGN#PBF or LTC3851AIMSE-1, depending on package and grade requirements. Ensure substitute parts maintain compatibility with the 16-SSOP footprint and support the same 4V to 38V input range.