MIC94300 RF Switches

By Microchip Technology 113

MIC94300 RF Switches

Microchip’s MIC94300 RF is an integrated load switch that incorporates Ripple Blocker™ active filter technology. The MIC94300 device provides high-frequency ripple attenuation (switching noise rejection) for applications where a switching noise cannot be tolerated by sensitive downstream circuits such as in RF applications. A low-voltage logic-controlled enable pin disconnects the pass element and places the MIC94300 into a low current-shutdown state when disabled.

The MIC94300 operates from an input voltage of 1.8 V to 3.6 V, allowing true load switching of low-voltage power rails in any electronic device. The output voltage (VOUT) is set at a fixed drop (typically 170 mV) from the input voltage (VOUT = VIN - 170 mV). This maintains high efficiency independent of given load conditions and currents. The MIC94300 load switch is ideal for automotive, industrial, video, tablets, smartphones, and IoT applications.

  • 1.8 V to 3.6 V input voltage range
  • Active noise rejection over wide frequency band: >60 dB from 40 kHz to 5 MHz
  • Rated to 200 mA output current
  • Logic-controlled enable pin
  • Current-limit and thermal-limit protected
  • Ultra-small 0.88 mm × 0.88 mm 4-ball CSP
  • 1.2 mm × 1.6 mm, 4-pin thin MLF
  • -40°C to +125°C junction temperature range
  • Ripple Blocker technology protects the device from damage due to fault conditions
  • Device maintains high efficiency independent of given load conditions and current
  • Low power dissipation makes the device suitable for many applications
  • Reduces printed circuit board space by 50% or more and lowers BOM cost
  • Automotive and industrial applications
  • Tablets/PCs/smartphones
  • Webcams/video cameras/smart devices
  • Global positioning systems and video conferencing

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