LTC3807IUDC#PBF

DC DC Switching Controllers Overview

The LTC3807IUDC#PBF is a high-performance, step-down switching regulator controller manufactured by Analog Devices Inc. It is designed to drive a single full N-channel synchronous power MOSFET stage. The device operates within an input voltage range of 4V to 38V and supports output voltages from 0.8V to 24V. Key electrical parameters include a low no-load quiescent current of 50µA and a shutdown supply current of 14µA. The switching frequency is programmable between 50kHz and 900kHz or can be phase-locked to an external clock up to 850kHz. It utilizes a constant frequency current mode architecture with OPTI-LOOP® compensation for transient response optimization.

DC DC Switching Controllers Feature Summary

• Constant frequency current mode architecture enables precise control and easy compensation.
• OPTI-LOOP® compensation optimizes transient response across wide output capacitance and ESR ranges.
• Phase-lockable switching frequency allows synchronization with external clocks or other controllers.
• Multiple light load operating modes including Burst Mode, pulse skipping, and continuous conduction.

DC DC Switching Controllers Applications

• Automotive always-on systems
• Battery-powered digital devices
• Distributed DC power systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence when sourcing. Confirm the package type matches the design requirements, as this part uses a 20-QFN (3x4mm) housing. Ensure the ordering information aligns with the manufacturer's latest datasheet specifications regarding pinout and thermal pad connections to avoid integration errors during procurement.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring a wide input voltage range up to 38V and low standby power consumption. It is suitable for designs needing flexible switching frequencies or synchronization capabilities. Consider the 20-QFN package size for space-constrained layouts. Ensure external components support the required current handling and voltage ratings for the chosen topology.

DC DC Switching Controllers Part Context

This part belongs to the LTC3807 family of synchronous buck controllers. It shares architectural similarities with other high-efficiency regulators in the portfolio but is distinct in its single-output configuration and specific package options. The IUDC suffix denotes the industrial temperature grade and the QFN package variant.

DC DC Switching Controllers Replacement Considerations

Direct replacements may include other Analog Devices synchronous buck controllers such as the LTC3807IFE#PBF, which offers the same functionality in a TSSOP-EP package. Cross-reference datasheets for pin compatibility and electrical parameter equivalence before substitution.