5V Low-Dropout Regulator for micro-P Application The LP2957AIS is a low-dropout voltage regulator manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features based on factual information:
### **Specifications:**
- **Input Voltage Range:** 4.75V to 30V
- **Output Voltage Options:** 5V (fixed) or adjustable (1.23V to 29V)
- **Output Current:** 500mA (max)
- **Dropout Voltage:** 380mV (typical at 500mA load)
- **Line Regulation:** 0.02%/V (typical)
- **Load Regulation:** 0.04%/mA (typical)
- **Quiescent Current:** 1.1mA (typical)
- **Operating Temperature Range:** -40°C to +125°C
- **Package:** TO-263 (D2PAK), TO-220
### **Descriptions:**
- The LP2957AIS is a high-performance, low-dropout voltage regulator designed for applications requiring stable power with minimal input-output differential.
- It includes thermal shutdown, current limit protection, and reverse battery protection.
- Suitable for battery-powered systems, industrial controls, and automotive applications.
### **Features:**
- **Low Dropout Voltage:** Ensures efficient operation even with small input-output differentials.
- **Low Quiescent Current:** Reduces power consumption in standby mode.
- **Thermal Shutdown Protection:** Prevents damage from overheating.
- **Current Limit Protection:** Safeguards against excessive load currents.
- **Reverse Battery Protection:** Protects the regulator from reverse polarity.
- **Adjustable Output:** Available in adjustable versions for flexible voltage requirements.
- **Stable with Low-ESR Capacitors:** Works reliably with ceramic or tantalum capacitors.
This information is sourced from the manufacturer's datasheet and technical documentation.
