CS8321YDPR3

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The CS8321YDPR3 is a micropower, fixed-output low dropout linear regulator manufactured by onsemi. It provides a stable 5.0 V output with a maximum load current of 150 mA. The device supports an input voltage range up to 45 V and features a typical dropout voltage of 0.5 V at full load. Key electrical characteristics include a quiescent current of 200 µA and a power supply rejection ratio (PSRR) of 75 dB at 120 Hz. It incorporates reverse polarity protection and short-circuit current limiting for robust operation across a temperature range of -40°C to 125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Micropower design with low quiescent current for energy efficiency
• Integrated reverse polarity protection and short-circuit current limiting
• Fixed 5.0 V output with high power supply rejection ratio

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery-powered portable electronic devices requiring efficient voltage regulation
• Industrial control systems operating within wide input voltage ranges
• Embedded microcontroller power supplies needing stable 5V logic levels

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'R3' indicates tape-and-reel packaging when sourcing components. Confirm RoHS compliance status through official manufacturer documentation or material composition declarations. Ensure the D2PAK-3 package variant matches your PCB footprint requirements. Cross-reference ordering part numbers with distributor catalogs to avoid confusion with similar pinout configurations.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component for applications requiring a fixed 5V rail from higher input voltages up to 45V. The low dropout characteristic allows operation even when the input voltage is close to the output level. Consider the thermal performance in the D2PAK-3 package for heat dissipation needs. The micropower nature makes it suitable for battery-operated systems where standby current consumption must be minimized.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the CS8321 series of micropower LDO regulators from onsemi. It is functionally related to variants such as CS8321YDP3 and CS8321YT3G, differing primarily in packaging and reel specifications. The series is designed for general-purpose linear regulation tasks where simplicity and reliability are prioritized over high-current capabilities.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Direct substitutes include CS8321YDP3 and CS8321YDPR3 from other manufacturers like Cherry or Rochester Electronics, provided pinouts and electrical specs match. Verify compatibility with alternative LDOs offering similar 5V output and 150mA current capacity.