ERY LOW DROP AND LOW NOISE VOLTAGE REGULATO WITH INHIBIT FUNCTION The LD2985BM31R is a low-dropout (LDO) voltage regulator manufactured by STMicroelectronics (ST).  

### **Specifications:**  
- **Output Voltage:** 3.1V (fixed)  
- **Output Current:** Up to 150mA  
- **Dropout Voltage:** 300mV (typical) at full load  
- **Input Voltage Range:** 2.5V to 16V  
- **Low Quiescent Current:** 30µA (typical)  
- **Low Standby Current:** 0.1µA (typical)  
- **High PSRR:** 70dB at 1kHz  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOT-23-5L  

### **Descriptions and Features:**  
- **Ultra-Low Dropout:** Ensures stable output even with small input-output differentials.  
- **Low Quiescent Current:** Optimized for battery-powered applications.  
- **Thermal Protection:** Built-in thermal shutdown for safety.  
- **Short-Circuit Protection:** Protects the device from damage.  
- **Stable with Low-ESR Capacitors:** Works with ceramic capacitors ≥1µF.  
- **Low Noise:** Suitable for noise-sensitive applications.  
- **Applications:** Battery-powered devices, portable electronics, IoT, and embedded systems.  

This regulator is designed for efficiency and reliability in space-constrained applications.

ERY LOW DROP AND LOW NOISE VOLTAGE REGULATO WITH INHIBIT FUNCTION