LTC3126IUFD#PBF

LTC3126 is a high efficiency synchronous buck converter with an internal no-loss PowerPath™ supporting seam less operation from two separate input power sources. Pin-selectable ideal diode-OR and priority input modes with user programmable undervoltage lockout thresholds provide full control over the transition between the input power sources. The fast, automatic switch over provided by the internal PowerPath eliminates the need for hold-up capacitors and minimizes disturbances on the output rail. An active input channel indicator and independent input and output power good signals provide complete feedback of the power system status. It is widely used in application such as portable industrial/communications test equipment, battery and supercapacitor backup power, automotive power with battery backup, uninterruptible power supplies etc.

• Wide input voltage range is 2.4V to 42V
• Wide output voltage range is 0.818V to VIN
• Upto 2.5A continuous output current
• Pin-selectable priority and ideal diode-OR modes
• Programmable input UVLO thresholds, input valid, priority channel and PGOOD indicators
• Synchronizable to an external clock, minimal external components
• Oscillator frequency is 2200KHz maximum
• Burst mode operation quiescent current from VIN is 5.5µA typical
• Operating temperature is -40°C to 125°C
• Package style is 28-lead plastic QFN

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