Three-Phase Brushless Motor Driver Here are the factual details about the **LB1870** motor driver IC based on available specifications, descriptions, and features:
### **Manufacturer:**
- **Sanyo Semiconductor** (now part of **ON Semiconductor** following acquisition).
### **Specifications:**
1. **Type:** Brushless DC (BLDC) Motor Driver IC.
2. **Output Configuration:** 3-phase full-wave PWM driver.
3. **Supply Voltage Range:**
- **Motor Supply (VM):** Up to **18V**.
- **Logic Supply (VCC):** **4.5V to 5.5V**.
4. **Output Current:**
- **Peak Current:** **1.2A** (per phase).
5. **Control Method:**
- PWM current control with built-in **Hall sensor input** for commutation.
6. **Protection Features:**
- Thermal shutdown.
- Overcurrent protection.
- Undervoltage lockout (UVLO).
7. **Package:**
- **HSOP24** (Heat Sink Small Outline Package, 24-pin).
### **Descriptions:**
- Designed for driving **3-phase brushless motors** efficiently.
- Integrates **pre-driver, PWM control, and protection circuits** in a single chip.
- Suitable for applications like **cooling fans, small appliances, and automotive systems**.
### **Features:**
1. **Hall Sensor Input:** Supports 120° or 60° commutation.
2. **Speed Control:** External PWM or analog voltage input for adjustable speed.
3. **Low Power Consumption:** Standby mode support.
4. **Built-in FG (Frequency Generator):** Provides rotation speed feedback.
5. **Soft Switching:** Reduces electromagnetic noise.
For exact tolerances or application-specific parameters, refer to the **official datasheet**.
