IR2D07

IR2D07 is a pulse-width modulated LED driver from International Rectifier, and is a member of a new family of surface-mount drivers (when-life board density) for the driving and regulating of higly-efficient LEDs. Developed by International Rectifier, the family of LED drivers provides linear current regulation with both initial calibration and temperature-dependent tracking schemes, thereby enabling high performance and long system life. The IR2D07 is part of the family since it offers a very flexible solution for driving protected LED devices with up to 500 mA LED current.

The IR2D07 LED driver has been classified as an LED driver belonging to the Power Management Integrated Circuits (PMIC) group. It is designed to drive LEDs through a series of digital pulses that control LEDs currents, resulting in constant and stable brightness output. It can be used to power up to 16 LEDs. Its main application areas include signal illuminating applications such as automotive, camera, keyboards and devices with backlight such as flat panel displays, smart phones and personal digital assistants.

The IR2D07 is suggested for use in applications that require DC to AC vibration and relatively low power. In terms of features, it offers excellent efficiency with over 90% power conversion rate for any input voltage, constant output current with minimal current ripple and excellent thermal performance, which results in long life and low power consumption. Furthermore, the IR2D07 is optimized to minimize the cost of ownership as its low harmonic distortion ensures that the LED driver runs cooler, resulting in lower maintenance costs. It also supports forward and reverse operation in order to maximize the lifetime of the device, while offering an adjustable output currentup to 500 mA.

The IR2D07 works by using the LED current to make up its “feedback” in such a way that the current in the LED remains constant and no additional “gain adjustment” is required. It does this by measuring the voltage across the LED. This voltage is then compared to a reference voltage and error amplifier adjusts the duty cycle of the Pulse Width Modulated (PWM) output. By adjusting the duty cycle, the load current is controlled, thereby regulating the LED current. The driver also features a 2-step pulse-by-pulse current limit that adjusts the output current to a safe level regardless of the source. The output voltage is monitored by an internal over voltage protection circuit.

Overall, the IR2D07 LED driver is a highly integrated DC-DC converter designed to power up to 16 LEDs. It is specifically designed to provide linear current regulation with both initial calibration and temperature-dependent tracking schemes, making it ideal for applications such as automotive, camera, keyboards, and devices with backlight such as flat panel displays, smart phones and personal digital assistants. Furthermore, the driver offers excellent efficiency and low power consumption, providing a flexible solution for driving protected LED devices with up to 500 mA LED current.