A 1μA IQ synchronous boost converter that extends battery life in portable devices is described.
Synchronous boost converter
Boost converters are regularly used in portable devices to produce higher output voltages from lower battery input voltages. Common battery configurations include two to three alkaline or NiMH cells or, increasingly, Li-Ion batteries, yielding a typical input voltage between 1.8V and 4.8V.
The 12V output converter shown in Figure 114.1 is designed to run from any typical small battery power source. This design centers around the LTC3122 boost converter, which can efficiently ...