Milpitas, Calif. Sipex Corp. has released a 4-channel low side LED driver for powering small- and mid-size LCD modules that use LEDs for backlighting. The SP7616 is designed to drive LEDs in series from input voltages as high as 30 V.
The SP7616 uses a minimum amount of external components to simplify board design and minimize system cost, said Sipex. The SP7616 is capable of powering up to four LED strings of nine LEDs at 60 mA per string for a total of 36 LEDs. The desired LED current can be adjusted with only one external resistor, and the precision string-to-string current matching ensures consistent color temperature across the whole display.
The SP7616 device also features a very low dropout voltage (100 mV at 20 mA) to maximize system efficiency and to avoid difficult thermal design requirements. Brightness can be adjusted by using a PWM dimming scheme. PWM dimming allows brightness control without unwanted color shifts.
In addition, the SP7616 features built-in thermal protection, which automatically adjusts LED current to prevent overheating. The SP7616 is available in a 2 x 3-mm 8-pin DFN package. The operating temperature range is -40°C to 85°C.
Pricing: Starts at $1.00 in quantities of 1,000.
Availability: Samples are available now.
Product information: LED drivers
Sipex Corporation, 1-877-467-4739, www.sipex.com