Micrel – MIC33164 and MIC33264: 4MHz, PWM, 1A/2A Buck Regulator Power Module with HyperLight Load® and Power Good

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MIC33164 and MIC33264: 4MHz, PWM, 1A/2A Buck Regulator Power Module with HyperLight Load® and Power Good

The MIC33164/264 is a highly efficient synchronous buck regulator with integrated inductor which provides the optimal trade-off between footprint and efficiency. The MIC33164/264 operates at 4MHz switching frequency and provides up to 2A output current. In addition, the 100% duty cycle and HLL mode of operation delivers very high efficiency at light loads and ultra-fast transient response which makes the MIC33164/264 perfectly suited for any space contained application and a great alternative for low dropout regulators. An additional benefit of this proprietary architecture is very low output ripple voltage throughout the entire load range with the use of small output capacitors.

FEATURES

  • 100% duty cycle
  • Ultra-fast transient response
  • Low radiated emission (EMI) per EN55022, class B
  • Thermal shutdown and current limit protection
  • 33μA quiescent current
  • Auto discharge of 180Ω
  • 85% typical efficiency at 1mA, up to 93% peak efficiency
  • Advanced copper lead frame design provides superior thermal performance
  • 0.7V to 5V adjustable output voltage
  • Low profile 2.5 x 3.0mm QFN package
  • 1k MSRP: starts at $1.32 and $1.70 US respectively

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