STMicroelectronics LE33CD-TR Fixed LDO Regulator 3.3V 150mA SOIC-8

The STMicroelectronics LE33CD-TR is a low drop-out voltage regulator with an inhibit function, providing a fixed 3.3V output. It is designed for low-noise, low-power applications and is especially suitable for battery-powered systems due to its low quiescent current.

This device is pin-to-pin compatible with the L78L series. In the 8-pin SOIC package, it features a shutdown logic control (pin 5, TTL compatible), allowing parts of a board to be placed in standby when used as a local regulator, reducing overall power consumption. In the 3-terminal TO-92 configuration, the device is always in the on-state.

Key Features

• Very low drop-out voltage (0.2V typical)
• Output current up to 150mA
• Internal current and thermal limit
• 80dB typical supply voltage rejection
• Requires only a 2.2µF capacitor for stability, reducing component size and cost
• Input voltage range: 5.3V to 18V
• Operating temperature range: -40°C to 125°C

The LE33CD-TR is a versatile solution for power management in various electronic systems, offering stable performance and efficient power regulation.