Low Power LED Driver Optimized for Coin Cell Powered Backlighting Applications
The CAT3661 is a new one-channel Quad-Mode LED Driver providing up to 92 percent efficiency for extended battery life in a wide range of portable applications including handheld medical equipment.
The CAT3661 can drive a single LED backlight with a current of up to 5 mA. Soft-start current limiting and short-circuit protection make the new device ideal for use in equipment powered by coin cell batteries. Packaged in a 16-lead TQFN package measuring just 3 mm x 3 mm x 0.8 mm high, the CAT3661 provides a valuable solution for engineers working on new designs where available board space is limited. The quad-mode charge pump supports a wide range of input voltages from 2.0 V to 5.5 V and also helps the CAT3661 achieve peak efficiency levels of up to 92 percent - up to 10 percent higher than traditional high efficiency 1.5x tri-mode charge pumps. Pricing for the device is $0.86 per unit in 10,000 unit quantities.
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