STEP DOWN CONTROLLER FOR LOW VOLTAGE OPERATIONS Here are the factual details about the **L6997STR** from the manufacturer **STMicroelectronics (ST)**:
### **Specifications:**
- **Manufacturer:** STMicroelectronics (ST)
- **Part Number:** L6997STR
- **Type:** Synchronous Buck Controller
- **Input Voltage Range:** 4.5V to 18V
- **Output Voltage Range:** Adjustable (down to 0.6V)
- **Switching Frequency:** Up to 1MHz
- **Output Current:** Up to 20A (depending on external components)
- **Efficiency:** High efficiency (up to 95%)
- **Package:** SO-8 (Small Outline Package)
- **Operating Temperature Range:** -40°C to +125°C
- **Protection Features:** Overcurrent protection (OCP), undervoltage lockout (UVLO), thermal shutdown
### **Descriptions:**
- The **L6997STR** is a high-performance synchronous buck controller designed for DC-DC step-down applications.
- It supports a wide input voltage range, making it suitable for various power supply designs.
- The device integrates PWM control with adjustable frequency and supports external synchronization.
- It is optimized for high efficiency and compact designs, ideal for industrial, automotive, and consumer electronics.
### **Features:**
- **Adjustable Output Voltage:** Configurable via external resistors.
- **High Switching Frequency:** Up to 1MHz for compact inductor and capacitor sizing.
- **Synchronous Rectification:** Improves efficiency by reducing conduction losses.
- **Soft-Start Function:** Prevents inrush current during startup.
- **Power Good Indicator:** Provides system monitoring capability.
- **Low Quiescent Current:** Enhances efficiency in light-load conditions.
For exact application-specific details, always refer to the official **STMicroelectronics datasheet**.
