The EUP2561JIR1 is a highly integrated and efficient synchronous Boost converter with an integrated power MOSFET, manufactured by Eutech Microelectronics. It's designed for applications requiring a stable and regulated output voltage from a lower input voltage. This boost converter is known for its high efficiency, small size, and robust protection features. It operates at a high switching frequency to minimize the size of external components, enabling compact and cost-effective designs.

Applications:

• Portable Power Banks: Used to boost the voltage from a single Li-Ion cell to 5V for charging mobile devices.
• LED Lighting: Drives LEDs with a constant current, ensuring consistent brightness.
• Battery-Powered Devices: Extends battery life in devices like Bluetooth speakers and handheld gadgets.
• USB Power Delivery (PD) Applications: Boosts voltage to negotiate higher power profiles.

Features:

• High Efficiency: Achieves up to 95% efficiency, minimizing power loss and heat generation.
• Integrated Power MOSFET: Simplifies the design and reduces the external component count.
• Adjustable Output Voltage: Allows for flexible output voltage settings to meet different application needs.
• Overvoltage Protection (OVP): Protects the circuit from excessive output voltage.
• Overcurrent Protection (OCP): Limits the output current to prevent damage from overload conditions.
• Short-Circuit Protection (SCP): Shuts down the converter in case of a short circuit at the output.
• Thermal Shutdown: Protects the IC from overheating by shutting down the converter at high temperatures.
• Small Package: Available in a compact package for space-constrained applications.

Benefits:

• Extended Battery Life: High efficiency maximizes battery runtime in portable devices.
• Compact Design: Small package size and integrated components enable space-saving designs.
• Reliable Operation: Comprehensive protection features ensure robust and reliable performance.
• Cost-Effective: Reduces the BOM cost by minimizing external components.

Additional Details:

The EUP2561JIR1 typically operates with an input voltage range of 2.5V to 5.5V and can provide an output voltage of up to 20V, depending on the external components selected. The switching frequency is typically around 1.2MHz, which allows for the use of small inductors and capacitors. The device also features soft-start functionality to limit inrush current during startup. External components such as an inductor, input capacitor, output capacitor, and resistor divider for the output voltage feedback are required for proper operation. The datasheet provides detailed information on selecting these components for optimal performance. Due to the product being END-OF-LIFE, it is recommended to search for alternative components to ensure future production is possible. The suggested replacements are commonly found within Richtek, Texas Instruments or Analog Devices' product portfolio.