The 33800 is a combination output switch and driver IC that may be used in numerous powertrain applications. The IC contains two programmable constant current drivers (CCD), an octal, low-side, serial switch (OSS) and six, external MOSFET gate pre-drivers (GD). The IC has overvoltage, undervoltage and thermal protection. All drivers and switches, including the external MOSFETs, have overcurrent protection, off-state open load detection, on-state shorted load detection and fault annunciation via the serial peripheral interface (SPI). Additional features include: Low power sleep mode, Heated Exhaust Gas Oxygen (HEGO) sensor diagnostics, output control via serial and/or parallel inputs, PWM capability, and programmable current output with dithering. These features, along with cost effective packaging, make the 33800 ideal for Powertrain Engine Control applications.Wide operating voltage range, 5 < VPWR < 36 voltsInterfaces to 3.3 and 5 volt microprocessors via SPI protocolLow, sleep mode, standby current, typically 10 uA.Internal or external voltage referenceInternal oscillator with calibrate capability Measures resistance to monitor HEGO sensorsCCDs have programmable current, dither frequency and amplitudeOSSs can be paralleled to increase current capabilityGDs have programmable frequency and duty cycle PWMAll outputs controllable via serial and/or parallel inputs