The MIC2150/1 are simple 2-phase dual-output synchronous buck control ICs featuring small size and high efficiency. The ICs implement PWM control at 500kHz (MIC2150) or 300kHz (MIC2151), with the outputs switching 180° out of phase. The result of the out-of-phase operation is 1MHz input ripple frequency with ripple current cancellation, minimizing the required input filter capacitance. A 1% output voltage tolerance allows the maximum level of system performance. Internal drivers with adaptive gate drive allow the highest efficiency with the minimum external components.

A dual threshold enable pin, matched soft-start pins, and a power good output are provided, allowing a high level of control.

The MIC2150/1 are available in the small size 4mm x 4mm 24-pin MLF® package. The MIC2150/1 has a junction operating range from –40°C to +125°C.

  Dual Synchronous Buck Control IC with outputs switching 180° out-of-phase

  4.5V to 14.5V input voltage range

  Adjustable output voltages down to 0.7V

  1% output voltage accuracy

  MIC2150: 500kHz PWM operation

  MIC2151: 300kHz PWM operation

  Adaptive gate drive allows efficiencies over 95%

  Adjustable current limit with no sense resistor
­ Senses low-side MOSFET current

  Internal drivers allow 20A per phase