LTC1143LCS#PBF

DC DC Switching Controllers Overview

The LTC1143LCS#PBF is a dual high-efficiency buck switching regulator controller manufactured by Analog Devices Inc. It features two independent regulator blocks utilizing constant off-time current mode architecture to drive external power MOSFETs at switching frequencies up to 400 kHz. The device incorporates automatic Burst Modem operation to maintain high efficiency at low output currents. It supports an input voltage range of 4 V to 14 V and provides fixed output voltages of 2.5 V and 3.3 V with corresponding output currents of 2 A and 1 A respectively. The component is housed in a 16-pin SOIC package.

DC DC Switching Controllers Feature Summary

• Dual independent regulator blocks for simultaneous multi-rail power generation
• Automatic Burst Modem operation ensures high efficiency during light load conditions
• Constant off-time current mode architecture drives external power MOSFETs
• Integrated shutdown capability for power management control

DC DC Switching Controllers Applications

• Portable battery-powered equipment requiring multiple voltage rails
• Industrial control systems needing efficient step-down conversion
• Communication infrastructure powering logic and interface circuits

DC DC Switching Controllers Procurement Notes

Verify the specific suffix and package type against the manufacturer's latest datasheet to ensure compatibility with your design requirements. Confirm that the component meets all relevant environmental standards and RoHS compliance specifications before finalizing procurement. Cross-reference the ordering information with official Analog Devices documentation to avoid discrepancies in part identification.

DC DC Switching Controllers Selection Notes

Select this controller when designing systems that require two distinct regulated outputs from a single intermediate bus voltage. It is suitable for applications where maintaining high efficiency across varying load conditions is critical, particularly in battery-operated devices. Ensure that external MOSFET selection aligns with the 400 kHz switching frequency and current requirements of the target application.

DC DC Switching Controllers Part Context

This component belongs to the LTC1143 series of dual high-efficiency buck switching regulator controllers. The series is designed to provide flexible power solutions for applications requiring multiple voltage levels. The LCS variant specifically denotes the 16-pin SOIC package option, offering a compact footprint for surface-mount assembly while maintaining the performance characteristics of the broader family.

DC DC Switching Controllers Replacement Considerations

Direct substitutes within the same family include the LTC1143L-ADJ for adjustable output configurations. Designers should verify pinout compatibility and thermal performance when considering alternative packages or adjacent models in the product line.