RS53328HR

Voltage Regulators - DC DC Switching Regulators Overview

The RS53328HR is a synchronous step-down switching regulator IC manufactured by Reed Semiconductor Corp. It delivers an adjustable output voltage ranging from 0.9V to 5.5V with a maximum continuous output current of 12A. The device operates with an input voltage range of 2.85V to 16V and supports variable switching frequencies between 600kHz and 2.2MHz. Packaged in a compact 21-QFN (3x4mm) surface-mount footprint, it integrates internal power switches for high efficiency. The component is rated for operation across an extended junction temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology with integrated high-side and low-side power MOSFETs
• Adjustable output voltage capability via external resistor network
• Wide input voltage range supporting various supply rails
• Flexible switching frequency selection to optimize inductor size and efficiency

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded processors
• Industrial control system power distribution
• Telecommunications equipment bias supplies
• Portable battery-powered devices requiring efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'HR' against the manufacturer's official datasheet to confirm pinout compatibility and thermal characteristics. Ensure the ordering quantity matches the required tape-and-reel or cut-tape specifications. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm current availability and lead times before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a high-current 12A solution is required within a small form factor. The adjustable output allows customization for various logic levels. Consider the thermal performance of the 21-QFN package under full load conditions. Verify that the chosen switching frequency aligns with available passive component values and electromagnetic interference constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the RS53328 family of DC-DC converters. Variants such as RS53328LR may share similar electrical characteristics but differ in packaging or marking codes. The HR designation typically indicates specific thermal or reliability grades defined by Reed Semiconductor Corp. Always consult the specific datasheet for the exact suffix to ensure functional equivalence with existing designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other 12A synchronous buck regulators in QFN packages from manufacturers like Texas Instruments or Analog Devices. Verify equivalent input voltage ranges, current limits, and control interfaces. Thermal resistance and pin-to-pin compatibility must be confirmed before substitution.