Onsemi Fixed LDO Voltage Regulator 3.3V 1A TO-252

Onsemi fixed LDO voltage regulator delivers a stable 3.3V output at up to 1A, making it a practical choice for power management designs. It is a positive low dropout linear voltage regulator built for stable, efficient power delivery.

Overview

The fixed 3.3V output is trimmed on-chip to an accuracy of within ±1.0%, supporting sensitive electronic circuits. The device delivers an output current exceeding 1A, with a maximum dropout voltage of 1.2V at 800mA. It accepts an input voltage range of 10V to 20V, which supports a variety of power supply designs.

Key Features and Protection

The regulator includes internal protection mechanisms that help safeguard the device and the application. These include output current limiting, safe operating area (SOA) compensation, and thermal shutdown, which help guard against damage from overloads, short circuits, and excessive temperature. The fixed-voltage version has no minimum load requirement, which simplifies circuit design and supports stable operation under very light loads. The component is lead-free (Pb-free).

Packaging and Operation

The regulator is presented in a compact, surface-mount TO-252-3 (DPAK) package, suited to space-constrained PCB layouts. It has an operating temperature range of 0°C to 125°C, making it suitable for industrial environments as well as consumer electronics.

Applications

• Power management subsystems in consumer electronics
• Voltage regulation for microcontrollers, sensors, and digital logic
• Industrial control systems requiring a clean, stable 3.3V rail
• High-current, low-dropout linear regulation from a higher input voltage