LTC7802IUFDM#WTRPBF

DC DC Switching Controllers Overview

The LTC7802IUFDM#WTRPBF is a dual-phase synchronous step-down controller from Analog Devices, designed for high-efficiency power conversion. It operates with an input voltage range of 4.5V to 40V and supports output voltages from 0.8V to 40V. The device features a fixed switching frequency of 3MHz, enabling the use of small external components. It incorporates spread spectrum modulation to reduce EMI noise peaks. The controller includes low quiescent current operation, phase shedding capability, and comprehensive protection features such as overvoltage, overcurrent, and thermal shutdown. It is housed in a compact 28-lead QFN package.

DC DC Switching Controllers Feature Summary

• Dual-phase architecture with integrated spread spectrum modulation for enhanced EMI performance
• Low quiescent current operation supporting extended battery life in portable applications
• Phase shedding capability for improved light-load efficiency
• Comprehensive protection including overvoltage, overcurrent, and thermal shutdown

DC DC Switching Controllers Applications

• Portable electronics and mobile devices
• Industrial control systems
• Automotive infotainment and instrumentation
• Point-of-load (POL) regulation modules

DC DC Switching Controllers Procurement Notes

Verify the exact part number suffix against the manufacturer's official documentation to ensure correct packaging and temperature grade. Confirm that the IUFDM variant matches the required lead configuration and thermal pad specifications for your PCB layout. Cross-reference the datasheet revision date to ensure compatibility with your design requirements. Always check for RoHS compliance status and any specific handling instructions provided by Analog Devices for this component.

DC DC Switching Controllers Selection Notes

Select this controller when high switching frequency and low EMI are critical requirements. The dual-phase design allows for higher current delivery compared to single-phase alternatives while maintaining small footprint. Consider the 3MHz frequency for minimizing passive component size. Evaluate the need for spread spectrum functionality if strict EMI regulations apply. Ensure the input voltage range aligns with your system's power supply characteristics and that the output voltage requirements fall within the 0.8V to 40V range.

DC DC Switching Controllers Part Context

The LTC7802 belongs to Analog Devices' family of high-performance synchronous buck controllers. It is part of the broader LTC78xx series, which focuses on low IQ and high-frequency operation. This specific model targets applications requiring efficient power management in space-constrained environments. The IUFDM package indicates a specific QFN form factor optimized for thermal performance and surface-mount assembly. It complements other variants like the LTC7801 and LTC7805 in the product line.

DC DC Switching Controllers Replacement Considerations

Direct replacements may include the LTC7802EMSE or other variants within the LTC7802 family, depending on package and temperature requirements. Verify pinout compatibility and electrical specifications before substitution. Consult Analog Devices for qualified alternative parts or updated revisions.