Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor **Part Number:** SM8580AM  
**Manufacturer:** NPC (New Japan Radio)  

### **Specifications:**  
- **Type:** Switching Regulator IC  
- **Function:** DC-DC Converter  
- **Input Voltage Range:** 4.5V to 18V  
- **Output Voltage:** Adjustable (typically 0.8V to 16V)  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 300kHz (typical)  
- **Efficiency:** Up to 95%  
- **Package Type:** HSOP-8 (Heat Sink Small Outline Package)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions and Features:**  
- **High-Efficiency Step-Down Converter:** Optimized for low power loss.  
- **Built-in MOSFET:** Includes a high-side P-channel MOSFET for compact design.  
- **Soft-Start Function:** Prevents inrush current at startup.  
- **Overcurrent Protection (OCP):** Safeguards against excessive current.  
- **Thermal Shutdown:** Protects the IC from overheating.  
- **Adjustable Output:** External resistors allow voltage customization.  
- **Low Standby Current:** Suitable for battery-powered applications.  

This IC is commonly used in power supply designs for industrial, automotive, and consumer electronics.

Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor