4A, 4MHz, Monolithic Synchronous Step-Down Regulator The LTC3414MPFE#PBF is a high-efficiency, monolithic synchronous step-down DC/DC converter manufactured by **Linear Technology (now part of Analog Devices)**.
### **Specifications:**
- **Input Voltage Range:** 2.25V to 5.5V
- **Output Voltage Range:** 0.8V to 5V (adjustable via external resistors)
- **Output Current:** Up to 4A
- **Switching Frequency:** 1MHz or 2MHz (selectable)
- **Efficiency:** Up to 95%
- **Operating Temperature Range:** -40°C to +125°C
- **Package:** 20-Lead TSSOP with Exposed Pad (FE)
- **Synchronous Rectification:** Yes (integrated power MOSFETs)
- **Current Mode Control:** Yes
- **Low Dropout Operation:** 100% duty cycle
- **Quiescent Current:** 40μA (in Burst Mode® operation)
### **Descriptions:**
The LTC3414MPFE#PBF is designed for high-performance, compact power supply applications. It features **Burst Mode® operation** for improved efficiency at light loads and **forced continuous mode** for low-noise applications. The device includes internal synchronous rectification, reducing the need for external Schottky diodes.
### **Features:**
- **High Efficiency:** Up to 95%
- **Burst Mode® Operation:** For low quiescent current
- **Selectable Frequency:** 1MHz or 2MHz
- **Internal Power MOSFETs:** No external Schottky diode required
- **Low Dropout Operation:** Allows 100% duty cycle
- **Current Mode Control:** Fast transient response
- **Thermal Shutdown Protection:** Prevents overheating
- **Short-Circuit Protection:** Enhances reliability
- **Adjustable Output Voltage:** Via external resistors
This part is commonly used in **portable devices, distributed power systems, and FPGA/ASIC power supplies** due to its high efficiency and compact design.
