Analog Devices Inc. LTC3118 Buck-Boost DC/DC Converters
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.
Features
- 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
Applications
- 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
Development Tools
Analog Devices Inc. LTC3118EUFD Demo Board DC2045A
Evaluation board featuring an example circuit based on the LTC3118 Buck-Boost DC-DC Converter.
Typical Application Circuit
Published: 2017-04-25
| Updated: 2022-03-11