The launch of Maxim high brightness LED (HB LED) drive

Maxim MAX16824/MAX16825 3 channel, high brightness LED (HB LED) driver, with a 6.5V to 28V input voltage range. This series of devices with three 36V rated, open drain, constant current output capability, can provide a current of up to 150mA to the three independent HB LED series. In order to optimize the design flexibility, the series IC can independently set the LED current of each channel.

In order to achieve this function, MAX16824 provides three PWM dimming input for independent control of the brightness of the series LED, and switch the series LED on and off. The MAX16825 provides a 3 bit transparent latch, 3 bit shift register and 2Mbps, the 4 line serial interface.

The serial interface enables all the output channels of the device to be controlled by an external microcontroller, and can also be cascaded with a plurality of MAX16825 drives to realize cooperative work. The series of flexible LED drives are suitable for a variety of applications, including industrial, architectural and decorative lighting; indoor / outdoor LED video displays, automotive interior lighting and LCD backlight.

The MAX16824/MAX16825 has a built-in regulator tube with a low differential pressure, thus eliminating the need for an external power transistor. The three - way adjustable tube of the device can provide LED current control with + / - 5% accuracy, ensure excellent brightness matching, reduce the size and reduce the complexity and cost of the whole drive scheme.

MAX1682

4/MAX16825 can also provide all the way +5V regulator output, with the 4mA output current drive capability, when the overheating can be put on the heating off function. Two devices are thermally enhanced, 4mm x 4mm, 16 pin TSSOP package, with bare pad. Chip starts at $0.91 (1000 chips, us FOB).