onsemi

CAT6219ADJTD-GT3

CAT6219ADJTD-GT3 Description

The CAT6219ADJTD-GT3 from onsemi is a high-performance, adjustable positive linear voltage regulator designed for precision power management in compact electronic systems. With an input voltage range up to 5.5V and an adjustable output voltage from 1.25V to 5V, it delivers a robust 500mA output current while maintaining low dropout voltage (0.5V @ 500mA). This regulator is optimized for efficiency, featuring a low quiescent current of 75 µA and a supply current of just 90 µA, making it ideal for battery-powered applications. Its 64dB to 54dB PSRR (1kHz to 20kHz) ensures excellent noise rejection, critical for sensitive analog and digital circuits. Packaged in a TSOT-23 form factor with tape-and-reel (TR) delivery, it suits space-constrained designs.

CAT6219ADJTD-GT3 Features

• Adjustable Output: Flexibility to set output voltage from 1.25V to 5V via external resistors.
• High Efficiency: Low dropout (0.5V @ 500mA) and ultra-low quiescent current (75 µA) extend battery life.
• Advanced Protection: Integrated safeguards include over-current, over-temperature, and UVLO (Under Voltage Lockout).
• Enable Control: Power-saving mode via enable pin, reducing standby consumption.
• High PSRR: 64dB at 1kHz ensures stable output in noisy environments.
• Compact & RoHS3 Compliant: TSOT-23 package meets stringent environmental standards.

CAT6219ADJTD-GT3 Applications

• Portable Electronics: Smartphones, tablets, and wearables benefit from its low Iq and small footprint.
• IoT Devices: Sensors and wireless modules leverage its high PSRR for reliable operation.
• Industrial Systems: Suitable for PLCs, instrumentation, and low-power control circuits.
• Automotive Accessories: Non-critical subsystems like infotainment or lighting, given its 5.5V max input.

Conclusion of CAT6219ADJTD-GT3

The CAT6219ADJTD-GT3 stands out for its adjustability, efficiency, and robust protection, making it a superior choice for modern low-power designs. While marked obsolete, its legacy performance in noise-sensitive, space-constrained applications remains unmatched. Engineers seeking a balance of precision and power conservation will find it invaluable, particularly in battery-operated and noise-prone environments.

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