3-Phase Buck Controller for Intel VRM9/VRM10 with Active Voltage Positioning The **LTC3738CUHF#PBF** is a product manufactured by **Linear Technology (now part of Analog Devices)**. Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Linear Technology (Analog Devices)
- **Part Number:** LTC3738CUHF#PBF
- **Package:** 38-Lead QFN (5mm x 7mm)
- **Type:** PolyPhase Synchronous Step-Down Switching Regulator Controller
- **Input Voltage Range:** 4.5V to 36V
- **Output Voltage Range:** Adjustable (0.6V to 5.5V)
- **Output Current:** Up to 20A per phase (configurable for 1, 2, or 3 phases)
- **Switching Frequency:** 250kHz to 550kHz (adjustable)
- **Efficiency:** Up to 95%
- **Operating Temperature Range:** -40°C to 85°C
- **Control Method:** Current Mode Control
### **Descriptions:**
The **LTC3738CUHF#PBF** is a high-performance, multi-phase synchronous step-down switching regulator controller designed for high-current, low-voltage applications. It supports 1-, 2-, or 3-phase operation, enabling efficient power distribution and reduced input/output ripple. The device features precision current sensing, adjustable switching frequency, and robust fault protection.
### **Features:**
- **PolyPhase Operation:** Supports 1, 2, or 3 phases for reduced input/output ripple and improved thermal performance.
- **Adjustable Frequency:** 250kHz to 550kHz (set by external resistor).
- **Precision Current Sensing:** Uses inductor DCR or sense resistors for accurate current monitoring.
- **Programmable Soft-Start:** Reduces inrush current during startup.
- **Fault Protection:** Includes overcurrent, undervoltage lockout (UVLO), and thermal shutdown.
- **Differential Remote Sensing:** Ensures precise output voltage regulation.
- **Phase-Lockable Oscillator:** Allows synchronization to an external clock.
- **Low Dropout Operation:** Maintains regulation even when input voltage approaches output voltage.
This information is strictly based on the manufacturer's datasheet and technical documentation. No additional guidance or suggestions are included.
