STMICROELECTRONICS LF33CV LDO Voltage Regulator, 3.3V, 500mA, TO-220-3

The STMICROELECTRONICS LF33CV is a fixed output, very low dropout (LDO) voltage regulator housed in a 3-pin TO-220 package. This regulator is designed to provide a stable 3.3V output with a maximum current of 500mA. Its low dropout voltage of just 400mV at full load and low quiescent current make it particularly suitable for battery-powered systems, low noise, and low power applications, ensuring efficient operation and extended battery life.

The LF33CV incorporates an inhibit function for logic-controlled electronic shutdown, allowing for effective power management in your designs. It also features internal current and thermal limiting, providing robust protection against fault conditions. The device is stable with a low-value output capacitor of only 2.2μF, helping to save board space and reduce overall system cost.

With a wide operating input voltage range up to 16V and an operating temperature range of -40°C to 125°C, the LF33CV is a versatile solution for a variety of applications. Its output voltage tolerance is ±2% at 25°C, and it offers a typical supply voltage rejection of 80dB, ensuring clean and reliable power delivery in sensitive electronic circuits.

Specifications

• Output Type: Fixed – 3.3V
• Output Current: Up to 500mA
• Very Low Dropout Voltage: 400mV at 500mA output current
• Very Low Quiescent Current: Typically 50μA in OFF mode, 500μA in ON mode
• Operating Input Voltage: Up to 16V
• Logic Controlled Electronic Shutdown (Inhibit function)
• Internal Current and Thermal Limit
• Output Voltage Tolerance: ±2% at 25°C
• Supply Voltage Rejection: Typically 80dB
• Operating Temperature Range: -40°C to 125°C
• Package: 3-pin TO-220 (Through Hole)
• Dimensions: Height 43mm, Width 33mm, Depth 15mm
• Weight: 2g