CAT6219-285MV2T3

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

The CAT6219-285MV2T3 is a fixed-output low dropout regulator from onsemi, providing a precise 2.85 V output with a guaranteed peak 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 incorporates a quick-start feature allowing external bypass capacitors for noise reduction without delaying turn-on time. It includes under-voltage lockout, thermal protection, and fold-back current limiting. The component is housed in a compact 6-pad WDFN package measuring 1.5 mm x 1.5 mm.

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

• Provides stable operation using small ceramic output capacitors, reducing board space and cost.
• Features a quick-start capability that enables the use of external bypass capacitors for low-noise performance without affecting turn-on speed.
• Includes comprehensive protection mechanisms such as thermal shutdown, fold-back current limit, and under-voltage lockout.
• Operates with extremely low ground current, making it suitable for battery-powered applications.

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 MV2T3 to confirm the WDFN-6 package type and tape-and-reel shipping configuration. Ensure the fixed 2.85 V output variant matches the system requirements, as other voltage options exist within the same family. Confirm RoHS compliance and lead finish specifications during procurement. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and traceability.

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

Select this regulator when a compact footprint and high efficiency are required for portable electronics. The 500 mA output capacity supports moderate load currents while maintaining low dropout characteristics. Consider the WDFN package for space-constrained designs requiring robust thermal management. Verify that the input voltage range aligns with the available power supply rails and that the fixed 2.85 V output meets the target circuit voltage needs.

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

This component belongs to the CAT6219 series of CMOS low dropout regulators designed for high-performance power management. The series offers both fixed and adjustable output versions across various packages including TSOT-23, TDFN, and WDFN. The CAT6219-285MV2T3 specifically utilizes the WDFN-6 package, distinguishing it from the TSOT-23 and TDFN variants in terms of physical dimensions and pinout configuration.

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

Direct substitutes include other CAT6219 variants with different output voltages or packages, such as CAT6219-280MV2T3 or CAT6219-285TDGT3. Verify pin compatibility and thermal resistance differences when replacing between package types. Ensure the replacement maintains the required 500 mA current rating and operating temperature range.

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

What is the function of the BYP pin on the CAT6219?

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

How does the quick-start feature benefit the design?

The quick-start feature enables the use of an external bypass capacitor for noise reduction without increasing the turn-on time of the regulator.

What protection features are included in the CAT6219?

The device includes thermal protection, fold-back current limit, and under-voltage lockout to safeguard against over-temperature, short circuits, and low input voltage conditions.