LTC3834EUFD#PBF

DC DC Switching Controllers Overview

The LTC3834EUFD#PBF is a high-performance synchronous buck switching regulator controller manufactured by Analog Devices Inc. It features a constant frequency current mode architecture with a lockable switching frequency up to 650 kHz. The device drives a full N-channel synchronous power MOSFET stage and includes an internal 4V LDO for biasing. Key electrical parameters include a quiescent current of 4 µA, an operating temperature range from -40°C to +85°C, and a supply voltage range of 2.75V to 18V. It is housed in a 20-lead QFN package.

DC DC Switching Controllers Feature Summary

• Constant frequency current mode architecture for stable regulation
• Lockable switching frequency capability up to 650 kHz
• Internal low dropout (LDO) regulator for controller biasing
• Designed for driving full N-channel synchronous MOSFET stages

DC DC Switching Controllers Applications

• Industrial point-of-load conversion
• Automotive electronics power distribution
• Aerospace systems requiring reliable DC-DC control

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence before procurement. Confirm that the EUFD package variant matches the required thermal and pinout specifications for the target PCB layout. Ensure compatibility with external component selection for the intended switching frequency and load requirements.

DC DC Switching Controllers Selection Notes

Select this controller when a synchronous buck topology with high efficiency and precise current mode control is required. It is suitable for applications needing a lockable frequency to avoid audible noise or EMI conflicts. Consider the 4 µA quiescent current for battery-operated systems where standby power consumption is critical.

DC DC Switching Controllers Part Context

This component belongs to the LTC3834 family of synchronous buck controllers. It is distinct from other Analog Devices regulators by its specific focus on high-frequency operation and integration of the bias LDO. The part serves as the control logic for external power switches rather than containing them internally.

DC DC Switching Controllers Replacement Considerations

The LTC3834IDHC-1#PBF is a documented alternative within the same product family, offering similar functionality in a different package configuration.