CAT6221-SFTD-GT3

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

The CAT6221-SFTD-GT3 is a dual-channel low dropout linear voltage regulator manufactured by onsemi. It features two independent outputs providing fixed voltages of 3.3 V and 1.5 V, each capable of delivering up to 300 mA of output current. The device operates within an input voltage range of 1.8 V to 5.5 V and maintains performance across an extended temperature range from -40°C to +125°C. Packaged in a compact TSOT-23-6 surface-mount case, it integrates internal circuitry for overcurrent protection and thermal shutdown to ensure reliable operation in space-constrained power management applications.

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

• Dual independent LDO channels providing fixed 3.3 V and 1.5 V outputs
• High current capability with 300 mA per channel
• Integrated overcurrent and thermal protection mechanisms
• Compact TSOT-23-6 package design

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

• Portable electronic devices requiring multiple voltage rails
• Embedded systems with strict space constraints
• Battery-powered equipment needing efficient power regulation
• Industrial control modules operating in wide temperature ranges

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

Verify component authenticity through authorized onsemi distributors or certified suppliers. Confirm the specific suffix GT3 matches the required reel packaging configuration. Check for recent product discontinuance notifications or lifecycle status updates prior to procurement. Ensure compliance with RoHS directives and verify that the received units match the specified 3.3 V/1.5 V output configuration without deviation.

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

Select this component when a dual-output solution is required to save board space compared to using separate single regulators. The fixed 3.3 V and 1.5 V outputs eliminate the need for external feedback resistors, simplifying the design. Consider the 300 mA limit per channel to ensure it meets the load requirements of both rails simultaneously. The wide input voltage range allows flexibility in battery-powered designs where supply voltage may vary significantly during discharge cycles.

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

This part belongs to the CAT6221 family of dual LDO regulators from onsemi. It shares the same core architecture and package type as variants like CAT6221-PFTD-GT3 but differs in its fixed output voltage configuration. The family is designed for portable electronics, offering high PSRR and low noise characteristics typical of modern CMOS LDOs. It serves as a direct alternative to other dual-output regulators in the same footprint category.

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

Direct pin-compatible substitutes include other CAT6221 variants with different fixed voltage combinations, such as CAT6221-PFTD-GT3 (3.3V/1.8V) or CAT6221-JFTD-GT3, provided the voltage requirements align. Verify that any replacement maintains the 300 mA current rating and TSOT-23-6 package dimensions to ensure mechanical compatibility.