Power-efficient LED driver extends battery life in portables

Phoenix, Ariz. – ON Semiconductor has introduced the CAT3661, a one-channel quad-mode LED driver for low power LED applications such as portable handheld medical equipment.

The CAT3661, which uses a patented architecture and integrates fault protection and diagnostics, is able to drive a single LED backlight with a current of up to 5 mA. Soft-start current limiting and short-circuit protection make the device suitable for use in equipment powered by coin cell batteries. Typical applications include low power backlighting for LCDs and backlighting for a wide range of portable handheld devices including medical equipment.

• QuadMode charge pump: 1x, 1.33x, 1.5x, 2x
• Drives one LED up to 5 mA
• Optimized for coin cell battery operation
• Open/Short LED fault detection
• Adjustable low battery detection
• Low quiescent current 150 µA typical
• Power efficiency up to 92%
• Low noise input ripple in all modes
• Zero current shutdown mode
• Soft start and short circuit current limiting
• Thermal shutdown protection
• 3 mm x 3 mm, 16pad TQFN package
• PbFree, halogen free/BFR free and RoHS Compliant

Availability: Now

Datasheet: Click here.