onsemi

MC33275D-2.5R2G

MC33275D-2.5R2G Description

The MC33275D-2.5R2G is a fixed-output linear voltage regulator from onsemi, designed to deliver a stable 2.5V output at up to 300mA with an input voltage range up to 13V. This surface-mount device is housed in an 8-SOIC package and is optimized for low dropout performance, featuring a maximum dropout voltage of 0.5V at 300mA. With a quiescent current of just 200 µA, it ensures efficient power management in battery-operated systems. The regulator boasts a high PSRR of 75dB (120Hz), making it suitable for noise-sensitive applications. Although marked as obsolete, it remains ROHS3 compliant and REACH unaffected, ensuring environmental compliance for legacy designs.

MC33275D-2.5R2G Features

• Fixed 2.5V Output: Precision-regulated voltage for stable power delivery.
• Low Dropout Voltage: 0.5V @ 300mA minimizes power loss.
• High PSRR: 75dB (120Hz) suppresses input noise effectively.
• Low Quiescent Current: 200 µA enhances efficiency in portable devices.
• Robust Protection: Includes over-current and over-temperature safeguards.
• Wide Input Range: Supports up to 13V, accommodating varied power sources.
• Surface-Mount Package: 8-SOIC for compact PCB integration.
• Compliance: ROHS3 and REACH compliant for environmental safety.

MC33275D-2.5R2G Applications

This regulator is ideal for applications requiring low-noise, stable voltage in space-constrained designs:

• Portable Electronics: Battery-powered devices like sensors and wearables benefit from its low Iq.
• Industrial Controls: Reliable voltage regulation for PLCs and instrumentation.
• Consumer Electronics: Used in audio systems and low-power displays for noise immunity.
• Embedded Systems: Suitable for microcontrollers and analog circuits needing clean power.
• Legacy Designs: Maintains compatibility in systems where obsolescence is managed.

Conclusion of MC33275D-2.5R2G

The MC33275D-2.5R2G excels in delivering efficient, low-noise power for precision electronics, combining low dropout and high PSRR in a compact form. While obsolete, its robust protection and compliance make it a viable choice for legacy or niche applications requiring reliable 2.5V regulation. Engineers should evaluate alternative modern equivalents for new designs but can leverage this regulator’s proven performance in existing systems.