VERY LOW DROP VOLTAGE REGULATOR WITH INHIBIT FUNCTION The LM2931D is a low-dropout voltage regulator manufactured by STMicroelectronics.  

**Specifications:**  
- **Output Voltage Options:** 3.3V, 5V, 8V, 9V, 10V, 12V, 15V (fixed) or adjustable (1.24V to 26V)  
- **Output Current:** Up to 100mA  
- **Dropout Voltage:** Typically 0.4V at full load  
- **Input Voltage Range:** Up to 26V  
- **Low Quiescent Current:** 1mA (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SO-8  

**Descriptions:**  
The LM2931D is a positive voltage regulator designed for low-power applications. It features low dropout voltage, low quiescent current, and reverse battery protection.  

**Features:**  
- Reverse battery protection  
- Internal short-circuit current limit  
- Thermal shutdown protection  
- Low standby current  
- Stable with low-ESR capacitors  

This regulator is suitable for battery-powered systems, automotive applications, and portable electronics.  

(Source: STMicroelectronics datasheet)

VERY LOW DROP VOLTAGE REGULATOR WITH INHIBIT FUNCTION