The UP0126BJ3-12 is a synchronous buck converter manufactured by UPI Semiconductor Corp. It's designed to provide a highly efficient and compact power solution for a variety of applications requiring step-down voltage conversion. This converter features a wide input voltage range and a low output voltage ripple, making it suitable for sensitive electronic devices.

Applications

• Point-of-Load (POL) Regulators: Powers microprocessors, FPGAs, and ASICs in various systems.
• Embedded Systems: Provides stable power for microcontrollers and peripherals.
• Portable Devices: Efficient power conversion in battery-powered applications.
• Industrial Control Systems: Powers sensors, actuators, and communication interfaces.
• Telecommunications Equipment: Regulates voltage for network devices.

Features

• Synchronous Rectification: Improves efficiency by reducing power loss.
• Wide Input Voltage Range: Accepts a broad range of input voltages.
• Low Output Voltage Ripple: Ensures stable power for sensitive loads.
• Adjustable Output Voltage: Allows for customized voltage settings.
• Overcurrent Protection (OCP): Protects the converter and load from excessive current.
• Short-Circuit Protection (SCP): Prevents damage during short-circuit conditions.
• Thermal Shutdown Protection (OTP): Disables the converter when temperature exceeds safe limits.

Benefits

• High Efficiency: Reduces power consumption and heat dissipation.
• Stable Output Voltage: Ensures reliable operation of powered devices.
• Robust Protection Features: Prevents damage from electrical faults.
• Compact Size: Minimizes board space requirements.
• Easy to Use: Simple design and minimal external components.

Additional Details

The UP0126BJ3-12 utilizes a constant-on-time (COT) control scheme to provide fast transient response and excellent load regulation. It features an integrated power MOSFET, further reducing the component count and board space. The adjustable output voltage allows for fine-tuning the power supply to meet specific application requirements. The overcurrent protection and short-circuit protection ensure the converter and load are protected from damage in case of electrical faults. The thermal shutdown protection adds an extra layer of safety by disabling the converter when the temperature exceeds safe limits. The device is available in a small QFN package for easy integration into space-constrained applications. The precise switching frequency can be found in the product datasheet, as well as specific details regarding external components required for optimal operation. Input and Output capacitance values are important for stability.