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MC33888FB
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Product Detailed Parameters
- Description：IC PWR SWITCH N-CHANNEL 64PQFP
- Series：-
- Mfr：NXP USA Inc.
- Package：Tray
- Switch Type：General Purpose
- Number of Outputs：12 (4 High Side, 8 Low Side)
- Ratio - Input:Output：-
- Output Configuration：High Side or Low Side
- Output Type：N-Channel
- Interface：SPI
- Voltage - Load：6V ~ 27V
- Voltage - Supply (Vcc/Vdd)：4.5V ~ 5.5V
- Current - Output (Max)：-
- Rds On (Typ)：10mOhm, 40mOhm, 600mOhm
- Input Type：-
- Features：Watchdog Timer
- Fault Protection：Current Limiting (Fixed), Open Load Detect, Over Voltage
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Supplier Device Package：64-PQFP (14x14)
- Package / Case：64-PowerBQFP
- Grade：-
- Qualification：-
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Overview
The MC33888FB is a single-package power switch combining four discrete high-side MOSFETs and an integrated IC control die with eight low-side drivers. It features two 10 mΩ and two 40 mΩ high-side outputs, plus eight 600 mΩ low-side outputs. The device operates within a load voltage range of 6V to 27V and requires a supply voltage between 4.5V and 5.5V. Control and diagnostics are managed via a 16-bit SPI interface. It supports PWM control for high sides and includes a watchdog timer. Operating junction temperature ranges from -40°C to 150°C.
Feature Summary
- Integrates quad high-side and octal low-side switches in a single package
- Provides comprehensive diagnostic features including open load detection and overcurrent protection
- Supports 16-bit SPI interface for programming and status reporting
- Includes parallel input capability for direct PWM control of high-side outputs
Applications
- Motorcycle Engine Control Unit (ECU)
- Small Engine Control Systems
- Lawn Equipment Controllers
- Electric Generators
Procurement Notes
Verify component authenticity through authorized NXP channels due to discontinued status. Confirm RoHS compliance and MSL rating prior to integration. Review PCN documentation for any manufacturing changes. Ensure design accounts for the specific 64-PQFP thermal requirements. Validate that the obsolete status does not conflict with long-term support obligations.
Selection Notes
Select this component when a combined high-side and low-side switching solution is required for automotive engine management. It is suitable for applications needing SPI-based diagnostics and multiple independent load controls. Consider the 64-PQFP package constraints and thermal dissipation needs. Evaluate if the fixed current limits and diagnostic features meet system safety requirements.
Part Context
The MC33888 belongs to NXP's portfolio of analog and mixed-signal ICs designed for automotive quality standards. It complements microcontrollers like the S32K series by providing robust power distribution and load driving capabilities. This family targets engine control units where reliability and diagnostic feedback are critical for operational safety and performance monitoring.
Replacement Considerations
Public confirmed substitute part numbers: None available.
