4-Phase Stepping Motor Driver Unipolar Self-Excitation Type(Io = 1.5A) The **STK6711BMK4** is a hybrid IC (integrated circuit) manufactured by **Toshiba**. Below are its key specifications, descriptions, and features based on available data:

### **Specifications:**
- **Manufacturer:** Toshiba  
- **Type:** Hybrid IC (Thick Film)  
- **Function:** Stepper Motor Driver  
- **Output Configuration:** Unipolar  
- **Supply Voltage (VCC):** Typically **+5V** (logic supply)  
- **Motor Supply Voltage (VM):** Up to **+35V** (depending on application)  
- **Output Current:** Up to **1.5A per phase** (peak)  
- **Package:** **Multiwatt15V** (15-pin, vertical mount)  
- **Operating Temperature Range:** **-20°C to +85°C**  

### **Descriptions:**
- Designed for **unipolar stepper motor control**.  
- Includes **built-in phase sequence logic** for simplified control.  
- Features **low saturation voltage** for improved efficiency.  
- Suitable for **precision positioning applications** (e.g., printers, scanners, robotics).  

### **Features:**
- **Built-in protection circuits** (thermal shutdown, overcurrent protection).  
- **High noise immunity** for stable operation.  
- **4-phase excitation mode** support (full-step, half-step, etc.).  
- **Low power dissipation** due to optimized internal design.  

For exact electrical characteristics and application circuits, refer to Toshiba’s official datasheet.

4-Phase Stepping Motor Driver Unipolar Self-Excitation Type(Io = 1.5A)