SD 3.0 compatible level shifter and ESD protection

January 21, 2013

Housed in a 2.0 x 2.0 x 0.47 mm WLCSP-25, the IP4855CX25 is an SD 3.0 compliant 6-bit bidirectional dual voltage level translator. It is specifically designed to interface between a memory card, operating at 1.8 or 2.9 V signal levels, and a host with a fixed nominal supply voltage of 1.2 to 3.3 V. The device supports SD 3.0 SDR50, DDR50, SDR25, SDR12 and SD 2.0 high-speed (50 MHz) and default-speed (25 MHz) modes. It includes an integrated switchable voltage regulator to supply the card-side I/Os, built-in EMI filters and robust ESD protections (IEC 61000-4-2, level 4).

Download datasheet IP4855CX25

Key features & benefits

  • 6-bit bidirectional dual voltage level translator
  • Supports up to 100 MHz clock rate
  • SD 3.0 specification-compliant voltage translation to support SDR50, DDR50, SDR25, SDR12, high-speed and default-speed modes
  • Feedback channel for clock synchronization
  • Low dropout voltage regulator to supply the card-side I/Os
  • Low power consumption by push-pull output stage with break-before-make architecture
  • Integrated pull-up and pull-down resistors: no external resistors required
  • Integrated EMI filters suppress higher harmonics of digital I/Os
  • Integrated 8 kV ESD protection according to IEC 61000-4-2, level 4 on card side
  • Level shifting buffers keep ESD stress away from the host (zero-clamping concept)
  • Pb-free, RoHS compliant and free of halogen and antimony (Dark Green compliant)
  • 25-ball WLCSP; pitch 0.4 mm

Key applications

  • Set-top box
  • Mobile phones
  • Tablets
  • Notebooks and netbooks 
  • PCs
  • DSCs (Digital Still Cameras)
  • Video cameras
  • Game pads

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