CAT6221-PFTD-GT3

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

The CAT6221-PFTD-GT3 is a dual-output low-dropout linear voltage regulator manufactured by onsemi. It features two independent channels, each capable of delivering up to 300 mA of output current. The device operates within an input voltage range of 2.3 V to 5.5 V and provides fixed output voltages. It utilizes a TSOT-23 surface-mount package with six pins. The regulator supports operation across an extended temperature range from -40°C to +125°C. Key electrical characteristics include a maximum dropout voltage of 350 mV at full load and a typical power supply rejection ratio of 60 dB. Line regulation is specified at 0.4% per volt, while load regulation is maintained at 2%.

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

• Dual-channel architecture providing independent regulated outputs for separate circuit rails.
• High current capability with 300 mA continuous output per channel.
• Low dropout performance ensuring stable regulation under varying load conditions.
• Compact TSOT-23 packaging suitable for space-constrained printed circuit board designs.

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

• Portable electronic devices requiring multiple voltage domains.
• Battery-powered systems needing efficient linear regulation.
• Embedded control circuits in consumer electronics.
• Industrial instrumentation requiring stable low-noise power supplies.

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

Verify component authenticity through authorized distribution channels due to potential availability constraints. Confirm specific output voltage codes as suffixes may indicate different fixed voltage options within the same package. Check for RoHS compliance documentation prior to integration. Ensure thermal management aligns with the TSOT-23 package limitations during high-load operations.

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

Select this component when dual isolated rails are required from a single input source. Compare against single-channel alternatives if only one rail is necessary to optimize cost. Evaluate dropout requirements against minimum input voltage to ensure regulation stability. Consider package size constraints relative to available PCB real estate.

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

This part belongs to the CAT6221 series of dual LDO regulators designed for portable applications. It complements other onsemi PMIC solutions by offering simple, low-noise regulation without external feedback components for fixed versions. The series targets markets demanding compact power solutions with reliable performance across wide temperature ranges.

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

Direct substitutes include other dual 300 mA LDOs from onsemi or competitors offering identical pinouts and voltage ratings. Verify equivalent dropout characteristics and PSRR values before substitution. Ensure thermal dissipation capabilities match the original design requirements.