CAT6218-320TDGT3

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

The CAT6218-320TDGT3 is a fixed-output CMOS low dropout regulator (LDO) manufactured by onsemi. It provides a fixed output voltage of 3.2 V with a maximum continuous output current of 300 mA. The device operates within an input voltage range of 2.3 V to 5.5 V and features a typical power supply rejection ratio (PSRR) of 64 dB. It is housed in a TSOT-23-5 surface-mount package and supports an operating temperature range from -40°C to +125°C.

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

• Provides fast response time during load current and line voltage changes
• Features quick start capability for rapid output voltage settling

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

• Portable electronic devices requiring stable 3.2 V supply
• Battery-powered systems needing efficient linear regulation
• Embedded circuits utilizing CMOS LDO technology

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

This component is officially listed as obsolete or end-of-life by the manufacturer. Availability is restricted to surplus distributors or secondary markets. Verify authenticity and storage history carefully when sourcing from non-original channels, as standard manufacturing support and warranty coverage may not apply to discontinued inventory.

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

Select this part only if a fixed 3.2 V output at 300 mA is required. Consider the CAT6219 series if adjustable output or higher current capacity is needed. Ensure the application does not exceed the 5.5 V maximum input rating. Evaluate thermal performance within the TSOT-23-5 package constraints for high ambient temperatures.

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

The CAT6218 belongs to onsemi’s family of 300 mA CMOS low dropout regulators designed for portable applications. It offers improved transient response compared to earlier generations. This specific variant is distinguished by its fixed 3.2 V output setting, differentiating it from other pin-compatible options within the same series that offer different voltage levels.

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

Official substitutes include other variants within the CAT6218 series such as CAT6218-300TDGT3. For higher current requirements, the CAT6219 series serves as a functional upgrade path.