Analog Devices MAX8668 Product Info

• Tiny, Thin QFN 3mm x 3mm Package
• Individual Enables
• Step-Down Converters
  • 600mA Guaranteed Output Current on OUT1
  • 1200mA Guaranteed Output Current on OUT2
  • Tiny Size 2.2µH Chip Inductor (0805)
  • Output Voltage from 0.6V to 3.3V (MAX8668)
  • Ultra-Fast Line and Load Transients
  • Low 25µA Supply Current Each
• LDOs
  • 300mA Guaranteed
  • Low 1.7V Minimum Supply Voltage
  • Low Output Noise

The MAX8667/MAX8668 dual step-down converters with dual low-dropout (LDO) linear regulators are intended to power low-voltage microprocessors or DSPs in portable devices. They feature high efficiency with small external component size. The step-down converters are adjustable from 0.6V to 3.3V (MAX8668) or factory preset (MAX8667) with guaranteed output current of 600mA for OUT1 and 1200mA for OUT2. The 1.5MHz hysteretic-PWM control scheme allows for tiny external components and reduces no-load operating current to 100µA with all outputs enabled. Dual low-quiescent-current, low-noise LDOs operate down to 1.7V supply voltage. The MAX8667/MAX8668 have individual enables for each output, maximizing flexibility.

The MAX8667/MAX8668 are available in the space-saving, 3mm x 3mm, 16-pin thin QFN package.

Applications

• Cell Phones/Smartphones
• Digital Cameras, Camcorders
• Handheld Instruments
• PCMCIA Cards
• PDA and Palmtop Computers
• Portable MP3 and DVD Players