High Voltage, 1.5A, 500kHz Step-Down Switching Regulators The LT1956IFE-5 is a high efficiency switching regulator IC manufactured by Linear Technology (now part of Analog Devices).
### **Specifications:**
- **Manufacturer:** Linear Technology (LT)
- **Part Number:** LT1956IFE-5
- **Package:** 16-Lead TSSOP (FE)
- **Input Voltage Range:** 3.6V to 25V
- **Output Voltage:** Fixed 5V
- **Output Current:** Up to 1.5A
- **Switching Frequency:** 200kHz
- **Efficiency:** Up to 95%
- **Operating Temperature Range:** -40°C to +125°C
- **Features:**
- Adjustable output voltage (with external feedback)
- Low dropout operation
- Soft-start functionality
- Overcurrent and thermal protection
- Synchronizable switching frequency
### **Descriptions and Features:**
The LT1956IFE-5 is a step-down (buck) switching regulator designed for high efficiency power conversion. It integrates a high-side switch and control circuitry, making it suitable for a wide range of applications, including industrial, automotive, and battery-powered systems.
Key features include:
- **Fixed 5V Output:** Simplifies design by eliminating the need for external feedback resistors.
- **Wide Input Range:** Supports operation from 3.6V to 25V, accommodating various power sources.
- **High Efficiency:** Minimizes power loss, making it ideal for battery-operated devices.
- **Protection Features:** Includes thermal shutdown and current limiting for robust operation.
- **Synchronization Capability:** Allows frequency synchronization to an external clock to reduce noise interference.
This regulator is commonly used in applications requiring stable and efficient power conversion, such as telecom equipment, distributed power systems, and portable electronics.
