Analog Devices Inc. LTC3118 Buck-Boost DC/DC Converters have a dual input and wide voltage range. The converters offer an intelligent, integrated, low-loss PowerPath™ control and unique power switch architecture. The low-noise, current mode architecture with a fixed 1.2MHz PWM provides efficient operation from either input source to a programmable output voltage. Flexible voltage capability of up to 18V and voltage margin makes the LTC3118 excellent for a wide variety of applications and power sources.
Analog Devices LTC3118 features include 2µA shutdown current, short circuit protection, and thermal overload. The converter is available in a thermally enhanced 24-lead 4mm x 5mm QFN and 28-lead TSSOP packages.
Ideal diode or priority VIN select modes
2.2V to 18V VIN1 and VIN2 range
2V to 18V VOUT range
Either VIN can be above, below, or equal to VOUT
Generates 5V at 2A for VIN > 6V
1.2MHz low noise fixed frequency operation
Current mode control
All internal N-channel MOSFETs
Pin-selectable PWM or Burst Mode® operation
Accurate, independent RUN pin thresholds
Up to 94% efficiency
VIN and VOUT power good indicators
IQ of 50μA in sleep, 2μA in shutdown
4mm × 5mm 24-lead QFN or 28-lead TSSOP packages
Systems with multiple input sources
Back up power systems
Wall adapter or Li-Ion(s) input to 5VOUT
Battery or supercapacitor input for reserve power
Replace diode-OR designs with higher efficiency, flexibility, and performance
Analog Devices Inc. LTC3118EUFD Demo Board DC2045A
Evaluation board featuring an example circuit based on the LTC3118 Buck-Boost DC-DC Converter.