Maxim Integrated MAX8668ETET

Description
The MAX8667/MAX8668 are dual step-down converters with dual low-dropout (LDO) linear regulators designed to power low-voltage microprocessors or DSPs in portable devices. They offer 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.

Features
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

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