MIC2289-34YML-TR Integrated Circuits (ICs)

PMIC - LED Drivers are used to turn on and off LEDs or light emitting diodes. These circuits are typically used in automotive and electronics applications.

The MIC2289-34YML-TR is a highly efficient, high-side power switch. It is designed to provide a wide range of drive functions for LEDs with high current and voltage requirements. This highly efficient and low-cost device is capable of driving up to 1.5A and up to 40V and offers a wide range of programmable protection features.

The device has an integrated current-sense and temperature protected P-channel MOSFET, which provides a high current drive capability for powering LEDs, and other on/off switching applications. The integrated Diagnostic and Protection circuit provides self-limiting, temperature-controlled current and voltage regulation, soft start, and over current protection.

The MIC2289-34YML-TR is designed to provide features such as wide input voltage range, dynamic voltage scaling, and brake slow ramp, which helps to reduce ringing and EMI noise in the system. It is suitable for automotive, consumer and industrial applications.

The device is integrated with several features such as:

• Wide Input Voltage Range (2.7V - 40V)
• High Efficiency Current Sense Topology
• No-load Startup Detection
• Soft Start Regulation
• Integrated Enable Control
• Dynamic Voltage Scaling
• Fault Protection
• Low Operating Current

The MIC2289-34YML-TR also integrates numerous protection features including: output over-voltage, over-temperature, output current limits, and inrush current limiting. In addition, the device includes an integrated rectifier diode to compensate for input voltage drop in the event of input voltage transients.

The MIC2289-34YML-TR is particularly well-suited for applications such as laptop and monitor backlight, SMPS, and LED lighting and signs. It can also be used in automotive applications such as vehicle headlights, brake/tail lights, and fog lamps.

Working Principle

The MIC2289-34YML-TR provides LED driver functionality with its integrated current-sense and temperature protection P-channel MOSFET. This integrated feature allows for the device to handle the high current and wide voltage range requirements of LED applications. Once the device has detected an overload, it will reduce the current to a safe level and then ramp up to the desired level.

The device also features several integrated features such as wide input voltage range, dynamic voltage scaling, and brake slow ramp, that help to reduce ringing and EMI noise in the system. The device also has protection features such as output over-voltage, over-temperature, current limits, and inrush current limiting. These features make the device highly reliable and robust when dealing with LED applications.

In addition, the MIC2289-34YML-TR also includes a no-load startup detection and soft start regulation feature. These features ensure that the device starts up properly and safely, reducing the chance of any damage to the system.