LTC3112IFE#PBF

LTC3112 is a fixed frequency synchronous buck-boost DC/DC converter with an extended input and output range. The unique 4-switch, single inductor architecture provides low noise and seamless operation from input voltages above, below or equal to the output voltage. Low RDS(ON) internal N-Channel MOSFET switches provide highly efficient operation in applications with higher load current requirements. This device features selectable PWM or Burst Mode operation, an easily synchronized oscillator and output disconnect in shutdown. An output current monitor circuit allows the load current to be controlled or measured. It is widely used in application such as 3.3V or 5V from 1, 2 or 3 Li-Ion, backup capacitor stack, hand held inventory terminals, RF transmitters, 12V synchronous boost converter, multiple power input systems, LED lighting with current regulation, 12V lead acid battery to 12V etc.

• Input operating range is 2.7V to 15V
• 2.5A continuous output current: VIN ≥ 5V, VOUT = 5V, PWM mode
• Output current monitor
• Upto 95% efficiency
• Frequency is 750KHz typical, SYNC frequency range is 300KHz to 1500KHz
• Quiescent current (Burst Mode Operation) is 50µA typical
• Overvoltage protection
• Output disconnect in shutdown, internal soft-start
• Operating temperature is -40°C to 125°C
• Packaging style is 20-lead plastic TSSOP

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party