LED driver touts inductive boost capabilities

Fremont, Calif.—Exar Corp. has started to sample an LED driver with inductive boost capabilities, giving system architects additional design options for backlighting applications.

Housed in a 2.9-mm x 2.8-mm SOT23-6 package, the SP6699 is suitable for small display/keypad LED lighting applications found in handheld portable devices such as PDAs, cell phones and data collection devices The SP6699 integrates a schottky diode (a switch boost regulator), and is capable of driving up to five series LEDs with four external components.

The SP6699 is compatible with PWM dimming up to 1 kHz and analog dimming and achieves the shutdown current of 3.2µA. The SP6699 operates from 2.5V all the way up to 16V achieving 84% efficiency using a 0.2V feedback to minimize power loss. The 0.2V feedback is ±6% accurate over the full operating temperature range. In addition, the SP6699 has an Over Voltage Protection (OVP) to ensure it can not be damaged in the event of an open circuited LED or a shorted feedback resistor.

Pricing: In 1,000 piece quantities, $0.59.
Availability: Samples are available now in a -40°C to +85°C temperature range.
Datasheet: Click here.


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