The LM2608 step-down DC-DC converter is optimized forpowering ultra-low voltage circuits from a single Lithium-Ioncell. It provides up to 400mA over an input voltage range of2.8V to 5.5V. Operating from a 1.35V reference, this deviceprovides pin-selectable output voltages of 1.3V/1.5V(300mA) for low voltage version or 1.5V/1.8V (400mA) forhigh voltage version. This allows adjustment for DSP or CPUvoltage options, as well as dynamic output voltage switchingfor reduced power consumption. Internal synchronous rectificationprovides high efficiency.
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