LTC7803IMSE#PBF

DC DC Switching Controllers Overview

The LTC7803IMSE#PBF is a synchronous step-down DC/DC switching controller manufactured by Analog Devices Inc. It operates with an input voltage range of 4.5V to 40V and supports switching frequencies from 100kHz to 3MHz. The device features a maximum duty cycle of 100% and includes spread spectrum modulation capabilities. It utilizes a 16-lead MSOP package with an exposed thermal pad, designed for surface-mount installation. The component supports clock synchronization and phase control, ensuring stable operation within a junction temperature range of -40°C to 125°C.

DC DC Switching Controllers Feature Summary

• Integrates spread spectrum frequency modulation to reduce electromagnetic interference peaks.
• Supports external clock synchronization for precise multi-phase alignment.
• Enables independent phase control across multiple controllers for load balancing.

DC DC Switching Controllers Applications

• Industrial power supply systems
• Telecommunications infrastructure equipment
• Automotive electronic control units

DC DC Switching Controllers Procurement Notes

Verify the specific suffix against official documentation to confirm package type and temperature rating. Ensure compatibility with required thermal management solutions due to the exposed pad design. Confirm RoHS compliance status through current manufacturer declarations before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this controller when designing non-isolated buck converters requiring low quiescent current and wide input voltage flexibility. Consider the MSOP-16EP package constraints for PCB layout and thermal dissipation requirements. Evaluate the need for external synchronization signals if operating in noise-sensitive environments or parallel configurations.

DC DC Switching Controllers Part Context

This component belongs to the LTC7803 family of high-efficiency synchronous buck controllers. It shares core architecture with variants like the LTC7803EMSE#PBF but differs in package configuration and industrial temperature grading. The series targets applications demanding compact form factors and robust performance under varying thermal conditions.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include other members of the LTC7803 family such as the LTC7803EMSE#PBF, provided pinout and thermal characteristics match the design requirements. Verify functional equivalence regarding control loops and protection features before implementation.

DC DC Switching Controllers FAQ

Does the LTC7803IMSE#PBF support external clock synchronization?

Yes, the device includes a SYNC pin that allows external clock synchronization for precise timing alignment in multi-phase systems.

What is the maximum duty cycle capability of this controller?

The controller supports a maximum duty cycle of 100%, enabling operation with very low output voltages relative to the input.