The SPX2931 is a low power, positive voltage regulator produced by Sipex Corporation. It is available in 3.3V and 3.5V versions, with output currents exceeding 100mA, input-output differential of 0.3V, mirror-image insertion protection, internal thermal protection, TO-92 and SOT-89 packages, an improved version of the industry standard LM2931, reverse battery, internal short circuit, 20V reverse transient and 60V load dump protection.
The SPX2931 is a positive voltage regulator designed for battery-powered applications such as cordless telephones and portable instrumentation. It features very low quiescent current (0.4 mA) and low dropout voltage, making it suitable for efficient power management in portable devices.
The device offers protection against reverse battery, internal short circuits, 20V reverse transients, and 60V load dumps. It is available with either 2% or 3% output accuracy at 25°C and comes in TO-92 and SOT-89 packages.
| Output Current | 100 mA |
|---|---|
| Input-Output Differential (Dropout) | 0.3 V at 100mA |
| Quiescent Current | 0.4 mA |
| Output Voltage Options | 3.3V and 3.5V |
| Package Types | TO-92 and SOT-89 |
| Output Accuracy (3.3V Version) | 2% or 3% |
| Reverse Polarity Input Voltage (DC) | -0.3V to -15V |
The maximum operational input voltage is 26 V.
Yes, it includes mirror-image insertion protection and internal thermal protection.