Evaluation Kit - 33879, Configurable Octal Serial Switch

FRDM-33879A-EVB
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  • This page contains information on a product that is no longer manufactured (discontinued). Specifications and information herein are available for historical reference only.

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This EVALUATION KIT supports the MC33879 device, which is an 8-output hardware-configurable, high side/low side switch with 16-bit serial peripheral interface (SPI) control. Two of the outputs may be controlled directly via microprocessor for PWM applications. The 33879 incorporates SMARTMOS® technology, with CMOS logic, bipolar/MOS analog circuitry, and DMOS power MOSFETs. The 33879 controls various inductive, incandescent, or LED loads by directly interfacing with a microcontroller.

This Evaluation kit may be used with the FRDM-KL25Z. The FRDM-KL25Z can be used as a FRDM SPI Dongle. All other FRDM boards currently online are also compatible with this board.

Product Details

Features

Key Features

  • RDS(ON) of 0.75 Ohms at 25 °C typical
  • Short-circuit detect and current limit with automatic retry
  • Independent over-temperature protection

Power Management

  • Designed to operate 5.5 V ≤ VPWR ≤ 27.5 V
  • 16-bit SPI for control and fault reporting, 3.3 V / 5.0 V compatible
  • Outputs are current limited (0.6 A to 1.2 A) to drive incandescent lamps
  • Output voltage clamp, + 45 V (low side) and - 20 V (high side) during inductive switching
  • Internal reverse battery protection on VPWR
  • Loss of ground or supply will not energize loads or damage IC
  • Maximum 5.0 µA IPWR standby current at 13 V VPWR

Components

  • On/Off control of open load detect current (LED application)

Design Resources

Software

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