5V Low-Dropout Regulator for micro-P Application The LP2957IS is a low-dropout voltage regulator manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features:
### **Specifications:**
- **Output Voltage Options:** Fixed (3.3V, 5V) or adjustable (1.24V to 29V).
- **Output Current:** Up to 750mA.
- **Dropout Voltage:** Typically 380mV at 750mA load.
- **Input Voltage Range:** Up to 30V.
- **Line Regulation:** 0.03% (typical).
- **Load Regulation:** 0.05% (typical).
- **Quiescent Current:** 1.1mA (typical).
- **Operating Temperature Range:** -40°C to +125°C.
- **Package:** TO-263 (D2PAK), 5-pin surface-mount.
### **Descriptions:**
- The LP2957IS is a high-performance, low-dropout voltage regulator designed for applications requiring stable power with minimal input-output differential.
- It includes features like thermal shutdown, current limit protection, and reverse-battery protection.
- Suitable for battery-powered systems, automotive, and industrial applications.
### **Features:**
- **Low Dropout Voltage:** Ensures efficient operation even with small input-output differentials.
- **Thermal Shutdown Protection:** Prevents damage from overheating.
- **Current Limit Protection:** Safeguards against excessive load currents.
- **Reverse Battery Protection:** Protects the regulator from damage if the battery is connected in reverse.
- **Low Quiescent Current:** Enhances efficiency in battery-operated devices.
- **Adjustable Output (for adjustable version):** Allows flexibility in setting the desired output voltage.
This information is based on the manufacturer's datasheet for the LP2957IS.
