LTC1625CS#PBF

DC DC Switching Controllers Overview

The LTC1625CS#PBF is a synchronous buck switching regulator controller from Analog Devices, housed in a 16-lead SOIC package. It operates with an input voltage range of 3.7V to 36V and features a fixed 150kHz switching frequency. The device utilizes MOSFET VDS sensing for current mode control, eliminating the need for external sense resistors. Quiescent current is typically 500uA, supporting efficient power management in compact designs.

DC DC Switching Controllers Feature Summary

• Eliminates external sense resistors through integrated MOSFET VDS sensing for improved efficiency
• Synchronous buck topology drives external N-channel power MOSFETs with minimal external components
• Fixed 150kHz switching frequency ensures predictable EMI characteristics and simplified filter design

DC DC Switching Controllers Applications

• Battery-powered portable equipment requiring wide input voltage ranges
• Point-of-load regulation in industrial systems
• Single inductor positive output buck-boost configurations

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging when sourcing. Confirm the 16-lead SOIC package type matches your PCB footprint requirements. Ensure the 3.7V to 36V input range aligns with your system's supply rails. Cross-reference the manufacturer part number directly with official Analog Devices documentation to avoid counterfeit components.

DC DC Switching Controllers Selection Notes

Select this component when designing synchronous buck converters that require high efficiency without the losses associated with external current sense resistors. The fixed 150kHz frequency is suitable for applications where EMI filtering needs to be standardized. Consider the 500uA quiescent current for battery life optimization compared to higher consumption alternatives.

DC DC Switching Controllers Part Context

This controller belongs to the LTC1625 family of current-mode DC/DC controllers designed for high-efficiency step-down applications. It serves as a core power management IC for systems needing robust voltage regulation with reduced component count. The family supports various output currents depending on external MOSFET selection.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include other Analog Devices synchronous buck controllers like the LTC1628 series for dual-phase applications or the LTC1625 variants with different package options such as the LTC1625IUH#PBF for QFN packaging.