CAT6219ADJTD-GT3

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

The CAT6219ADJTD-GT3 is a 500 mA CMOS low dropout regulator manufactured by onsemi. It provides an adjustable output voltage within an input range of 2.3 V to 5.5 V. The device features a typical dropout voltage of 300 mV at full load and maintains ±1.0% initial accuracy for outputs ≥ 2.0 V. It includes under voltage lockout, thermal protection, and fold-back current limit. The part is housed in a TSOT-23 package.

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

• Adjustable output voltage configuration via external resistor divider
• Quick-start feature enabling fast turn-on with external bypass capacitor
• Zero shutdown current mode for battery-operated applications
• Stable operation with small ceramic output capacitors

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 the specific ordering suffix 'TD' corresponds to the TSOT-23 package and 'GT3' indicates tape and reel shipping quantity. Confirm RoHS compliance status as lead-free and halogen-free. Ensure the application circuit matches the adjustable topology using the ADJ pin rather than fixed voltage options.

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

Select this component when an adjustable LDO with 500 mA capability is required in a compact surface-mount package. Verify that the desired output voltage falls within the valid range supported by the internal reference. Consider the thermal performance in the TSOT-23 package if continuous high-current loads are expected.

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

This part belongs to the CAT6219 series of low dropout regulators from onsemi. The series offers both fixed and adjustable output variants across multiple packages including TSOT-23, WDFN, and TDFN. The CAT6219ADJTD-GT3 specifically denotes the adjustable version in the 5-lead TSOT-23 package.

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

Direct substitutes include other CAT6219 family members such as CAT6219ADJMV2-T3 (WDFN) or CAT6219ADJVP5GT4 (TDFN). Fixed voltage versions like CAT6219-180TDGT3 may replace it if the specific output voltage requirement is met without adjustment.

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

How is the output voltage adjusted?

The output voltage is set by connecting an external resistor divider between the VOUT pin and the ADJ pin.

What is the purpose of the BYP pin?

The BYP pin allows connection of an external capacitor to reduce output noise and enhance power supply rejection ratio (PSRR).