Professional IC Distribution & Technical Solutions

The VT1156SF is a power management IC manufactured by Volterra Semiconductor (now part of Maxim Integrated). Below are its key specifications, descriptions, and features:

Specifications:

• Input Voltage Range: 4.5V to 14V
• Output Voltage: Programmable (typically 0.6V to 5.5V)
• Output Current: Up to 15A
• Switching Frequency: Adjustable (typically 300kHz to 1MHz)
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +85°C
• Package: 40-pin QFN (6mm x 6mm)

Descriptions:

The VT1156SF is a high-performance, synchronous step-down DC-DC converter designed for high-current applications. It integrates power MOSFETs, a controller, and compensation circuitry, making it suitable for space-constrained designs.

Features:

• Integrated Power MOSFETs – Reduces external component count.
• Programmable Output Voltage – Adjustable via external resistors.
• Adjustable Switching Frequency – Optimizes efficiency and board space.
• Precision Voltage Reference – Ensures accurate output regulation (±1% over temperature).
• Overcurrent & Overtemperature Protection – Enhances system reliability.
• Power Good Indicator – Monitors output status.
• Soft-Start Control – Prevents inrush current during startup.

This IC is commonly used in servers, networking equipment, and high-performance computing applications requiring high efficiency and power density.

*(Note: Since Volterra was acquired by Maxim Integrated, refer to Maxim's documentation for updated support.)*