One Cylinder Small Engine Control IC
Design Files
Receive the full breakdown. See the product footprint and more in the eCad file.
Two Cylinder Small Engine Control IC
The NXP® 33814 is an engine control analog power IC delivering a cost-optimized solution for managing one and two-cylinder engines.
- With six drivers, three pre-drivers, a 5.0 V regulator for the MCU, a protected external sensor supply, and a high level of integration, the IC offers an ideal response to contemporary market requirements.
- The innovative VRS system optimizes noise immunity under cranking conditions.
- Diagnostic and protection features present on all outputs allow applications to operate with greater safety.
- The device is packaged in a 48 pin LQFP with an exposed pad for a minimum space footprint.
Product Details
Block Diagram
Features
Key Features
- Operates over supply voltage range of 4.5 V < VPWR < 36 V
- Start-up/shut-down control and power sequence logic with KEYSW input
- MCU supply: VCC is a 5.0V (±2.0%, 200 mA) regulated supply
- Sensor supply: VPROT (100 mA) is a VCC tracking protected sensor supply
- Two configurable pre-drivers for IGBT or general purpose gate MOSFETs for
- Ignition and O2 sensor (HEGO) heater
- PWM
- Overcurrent shutdown
- Short-to-battery shutdown
- Six low-side drivers with full diagnostics, self-protection and PWM control
- Two fuel injector drivers, RDS(on) = 0.6 Ω, ILIMIT = 1.8 A, to drive typical 12 Ω
- High-Impedance Injectors
- Relay 1 driver, RDS(on) = 0.4 Ω, ILIMIT = 3.0 A, to drive fuel pump
- Relay 2 driver, RDS(on) = 1.5 Ω, ILIMIT = 1.2 A, to drive power relay
- Lamp driver, RDS(on) = 1.5 Ω, ILIMIT = 1.2 A, to drive warning lamp or an LED
- Programmable Tachometer Driver, RDS(on) = 20 Ω, Ishutdown = 60 mA, to drive
- Tachometer display
- Innovative configurable VRS conditioning circuit, with two different parameter
- Settings for engine cranking and running mode and an optional automatic mode
- Improve noise immunity in cranking conditions
- K-line (ISO9141)
- MCU reset generator and programmable watchdog
- MCU Interface: 16-bit SPI and parallel interface with 5.0V IO capability
Product Longevity Program
- This product is included in the NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The MC33814AE is included in the 15-year program
Related products
Buy/Parametrics
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Documentation
Quick reference to our documentation types.
5 documents
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Data Sheet
Two cylinder small engine control IC - Data sheetFeatured
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Application Note
AN5253, VRS Automatic Mode Setting - Application Note
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Selector Guide
Analog Automotive and Industrial Selector Guide
Design Resources
Hardware
Quick reference to our
board types.
1 hardware offering
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Evaluation and Development BoardsEvaluation Kit for MC33814, 2 Cylinder Small Engine ControlFeatured
Software
Quick reference to our software types.
1 software file
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Configuration Tools
SPI Generator (SPIGen) Software
Note: For better experience, software downloads are recommended on desktop.
Engineering Services
To get further assistance directly from NXP, please see our Engineering Services.
2 engineering services
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Independent Design House (IDH)
Hardware/Software Engineering Services
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Independent Design House (IDH)
Hardware/Software Engineering Services
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