MIC94305: 500mA Switch with Ripple Blocker™ Technology

Key Features
  • 1.8V to 3.6V input voltage range
  • Active noise rejection over a wide frequency band: >60dB from 40kHz to 5MHz
  • Rated to 500mA output current
  • Current-limit and thermal-limit protected
  • Ultra-small 0.84mm x 1.32mm 6-ball CSP
  • 1.6mm x 1.6mm, 6-pin Thin DFN
  • Logic-controlled enable pin
  • −40°C to +125°C junction temperature range
Typical Application

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  • Smart phones
  • Tablet PC/notebooks and webcams
  • Digital still and video cameras
  • Video conferencing
  • Barcode scanners
  • Global positioning systems
  • Automotive and industrial applications

General Description

The MIC94305 is an integrated load switch that incorporates Micrel’s Ripple Blocker™ active filter technology. The MIC94305 provides high-frequency ripple attenuation (switching noise rejection) for applications where switching noise cannot be tolerated by sensitive downstream circuits, such as RF applications. A low-voltage logic enable pin disconnects the pass element and puts the MIC94305 in a low current-shutdown state when disabled.

The MIC94305 operates from an input voltage of 1.8V to 3.6V, allowing true load switching of low-voltage power rails in any electronic device. The output voltage (VOUT) is set at a fixed drop (typically 170mV) from the input voltage (VOUT = VIN – 170mV). This maintains high efficiency independent of given load conditions and currents.

The MIC94305 is packaged in a 6-ball 0.84mm x 1.32mm CSP package, or 6-pin 1.6mm x 1.6mm Thin DFN package, and has a junction operating temperature range of -40°C to +125°C.

Ordering Information
Part Number Package Lead Finish
MIC94305YCS*0.84mm x 1.32mm WLCSPPb-Free
MIC94305YMT(1)1.6mm x 1.6mm Thin DFNPb-Free

1. Thin DFN is a GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. 
* Contact Micrel for availability.

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