Two-string HB LED driver is industry’s first for auto apps
Claimed as the industry’s only two-string HB (high-brightness) LED driver for automotive applications, the MAX16838 integrates a boost or SEPIC switching converter, two linear current sinks, and all necessary power MOSFETs. Features include an LED dimming range of 5,000:1 at 200 kHz and a switching frequency from 200 kHz to 2 MHz.
The driver optimizes conversion efficiency by automatically adjusting the switching converter’s output voltage to the voltage supply required by the LEDs. Capable of delivering up to 150 mA per string, the driver operates over the –40° to 125°C automotive temperature range and accepts a wide, 4.75 to 40-V input range.
Housed in a 20-pin TQFN and TSSOP packages, the MAX16838 also includes a complete set of protections including LED fault, overtemperature, and overvoltage. If an LED fails open or short, the driver automatically disables the affected string while keeping the others working, thus improving system reliability. (From $1.45 ea/1,000 — available now.)
Maxim Integrated Products , Sunnyvale , CA
Customer Service 800-998-8800
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