Typical Application Circuit for LT1317BIS8 Single Li-Ion to 5V DC/DC Converter. The LT1317B is a micropower, fixed frequency step-up DC/DC converters that operate over a wide input voltage range of 1.5V to 12V. The LT1317B does not shift into Burst Mode operation at light loads, eliminating low frequency output ripple at the expense of light load efficiency