The BD9361GUL-E2 is a white LED driver IC manufactured by Rohm Semiconductor. It is designed to provide efficient and stable power to drive white LEDs, commonly used in LCD backlights, displays, and other lighting applications. The IC incorporates boost converter circuitry to generate the necessary voltage for driving the LEDs from a lower input voltage source. It also includes dimming control functionalities, enabling brightness adjustment and power saving features.

Applications

• LCD backlights for smartphones
• LCD backlights for tablets
• LCD backlights for portable gaming devices
• Small LCD displays for various consumer electronics
• General LED lighting applications

Features

• High Efficiency Boost Converter: Integrated boost converter provides high efficiency power conversion, minimizing power loss and heat generation.
• Constant Current Control: Ensures stable and consistent current flow to the LEDs, resulting in uniform brightness and extended lifespan.
• PWM Dimming Control: Allows for precise brightness control via pulse-width modulation (PWM) dimming, enabling a wide range of brightness levels.
• Analog Dimming Control: Supports analog dimming for adjusting the brightness by varying the input voltage.
• Overvoltage Protection (OVP): Protects the LEDs from damage due to excessive output voltage.
• Overcurrent Protection (OCP): Limits the output current to prevent damage from short circuits or overloads.
• Short Circuit Protection (SCP): Quickly shuts down the output in case of a short circuit condition.
• Thermal Shutdown Protection: Shuts down the IC to prevent damage when the junction temperature exceeds a safe threshold.
• Small Package: Available in a compact package for space-constrained applications.

Benefits

• Efficient LED Driving: High efficiency boost converter and constant current control ensure efficient and reliable LED driving, maximizing battery life in portable devices.
• Precise Brightness Control: PWM and analog dimming options provide flexible and precise brightness control, allowing for optimal display performance in various ambient lighting conditions.
• Enhanced System Reliability: Integrated protection features such as OVP, OCP, and SCP enhance system reliability and prevent damage from various fault conditions.
• Compact Design: Small package size makes it suitable for space-constrained applications, enabling smaller and more compact product designs.
• Cost-Effective Solution: Integrated functionality and high efficiency provide a cost-effective solution for LED backlight applications.

Additional Details

The BD9361GUL-E2 typically operates from a low input voltage, making it suitable for battery-powered devices. It is designed to drive multiple white LEDs in series or parallel configurations. The IC's internal circuitry is optimized for low noise operation, ensuring minimal interference with other sensitive components in the system.