For boost, buck-boost and Maxim launched the buck configuration LED high voltage HB driver MAX16833. The unique structure of the device can provide a complete short circuit protection, through the single line connected to the LED, and has the function of internal frequency jitter. These characteristics enable designers can easily meet the DRL daytime running lights), position lamp, steering lamp and far / dipped beam and high power automotive lighting applications on the reliability of the stringent requirements. LED can achieve high fault tolerance and reliability of the

MAX16833 drive program. Device with a wide input voltage range in the normal operation can withstand the peak of up to 65V of the battery thrown load voltage. Integrated high side dimming P channel MOSFET driver and high side current sense amplifier can detect short circuit fault, and protect LED, driver and battery in the event of short circuit fault. The short circuit protection circuit is provided between the output and the ground, the input and the output. In addition, the architecture uses a single line and LED connection, and effectively reduce the cost and complexity of the connection between the LED and the drive. MAX16833 also includes output over-voltage protection, over heat protection and fault detection output.

Another major characteristic of

device is the internal frequency jitter function, which can greatly improve the performance of EMI, simplify the circuit board design difficulty, reduce the cost of EMI filter components. Function of the frequency jitter is not included in the MAX16833B version of HB led the drive but provide a accuracy is + / - 2% 1.64v reference voltage output, can be used for other devices on the drive circuit board. Two devices are used to enhance the heat dissipation of the 16 pin TSSOP package, working at -40 degrees C to +125 degrees C automotive temperature range.