CAT6219-180TDGT3

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

The CAT6219-180TDGT3 is a fixed-output low dropout regulator manufactured by onsemi, providing a stable 1.8 V output with a maximum current of 500 mA. It operates within an input voltage range of 2.3 V to 5.5 V and features a typical dropout voltage of 300 mV at full load. The device includes a quick-start feature allowing the use of an external bypass capacitor for noise reduction without affecting turn-on time. It offers ±1.0% initial accuracy and incorporates under-voltage lockout, thermal protection, and fold-back current limit.

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

• Quick-start feature enables fast turn-on while supporting external bypass capacitors for reduced output noise
• Stable operation guaranteed with small-value ceramic output capacitors
• Integrated under-voltage lockout circuit disables output below specified threshold
• Includes thermal protection and fold-back current limit for enhanced reliability

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

• Cellular phones
• Battery-powered devices
• Consumer electronics

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

Verify that the specific part number matches the required fixed 1.8 V output variant. Confirm the package type corresponds to the TSOT-23-5 suffix (TD) as indicated in the ordering information. Ensure compatibility with the recommended operating conditions, specifically the input voltage range and temperature specifications, before finalizing procurement.

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

Select this component when a fixed 1.8 V supply is required from a 2.3 V to 5.5 V source. It is suitable for applications needing high peak output current up to 500 mA. Consider the TSOT-23-5 package for space-constrained designs. Verify that the application does not require adjustable output or different voltage levels, as this specific suffix denotes a fixed 1.8 V configuration.

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

This component belongs to the CAT6219 series of CMOS low dropout regulators. The series provides options for both fixed and adjustable outputs across various packages including TSOT-23, WDFN, and TDFN. The CAT6219-180TDGT3 specifically represents the fixed 1.8 V version housed in the TSOT-23-5 package, designed for battery-operated portable electronics requiring efficient power management.

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

Direct pin-to-pin replacements within the same family include other fixed voltage variants such as CAT6219-250TDGT3 or CAT6219-330TDGT3 if the output voltage requirement differs. For adjustable output needs, the CAT6219ADJTDGT3 serves as a functional alternative within the same package.