RS53319HR

Voltage Regulators - DC DC Switching Regulators Overview

The RS53319HR is a high-power density, fully integrated synchronous buck converter from Reed Semiconductor Corp. It supports a maximum continuous output current of 20A and features a positive programmable output voltage starting at 0.9V. The device operates with an input voltage range of 2.85V to 16V and utilizes Robust Constant On Time (RCOTM) control for fast transient response. Switching frequencies are selectable between 600kHz, 800kHz, 1MHz, and 2.2MHz. It is housed in a 21-QFN package and functions within an operating temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous rectification for high efficiency in compact form factors
• Utilizes Robust Constant On Time control architecture for rapid load transient handling
• Offers flexible switching frequency selection to optimize design trade-offs

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in industrial systems
• Power delivery for PCIe applications
• High-density POL conversion requiring 20A output capability

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix HR against official datasheets to confirm pinout and thermal pad configurations. Ensure compatibility with the required switching frequency setting. Cross-reference the 21-QFN footprint dimensions with PCB layout guidelines. Confirm that the selected component meets the intended thermal management requirements for the target operating environment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 20A synchronous buck solution is required with programmable output voltages down to 0.9V. Consider the RCOTM control scheme for applications demanding fast transient response without complex compensation networks. Evaluate the available switching frequency options to balance efficiency against passive component size. Verify input voltage compatibility within the 2.85V to 16V range.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to Reed Semiconductor's portfolio of power management integrated circuits designed for robust performance in demanding environments. It complements other devices like the RS31340B eFuse and RS53317 POL converters by providing high-current step-down regulation capabilities essential for modern electronic system power distribution architectures.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers for the RS53319HR are not available in the provided documentation. Engineers should consult manufacturer cross-reference tools or technical support for verified alternatives.