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MC33291DW
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Product Detailed Parameters
- Description：IC PWR SWITCH N-CHAN 1:8 24SOIC
- Series：-
- Mfr：NXP USA Inc.
- Package：Tube
- Switch Type：General Purpose
- Number of Outputs：8
- Ratio - Input:Output：1:08
- Output Configuration：Low Side
- Output Type：N-Channel
- Interface：SPI
- Voltage - Load：9V ~ 26.5V
- Voltage - Supply (Vcc/Vdd)：2.5V ~ 3.5V
- Current - Output (Max)：500mA
- Rds On (Typ)：550mOhm
- Input Type：-
- Features：-
- Fault Protection：Current Limiting (Fixed), Open Load Detect, Over Temperature, Over Voltage
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Supplier Device Package：24-SOIC
- Package / Case：24-SOIC (0.295", 7.50mm Width)
- Grade：-
- Qualification：-
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Overview
The MC33291DW is an eight-output power switch manufactured by NXP USA Inc., designed for load distribution in automotive and industrial applications. It features a serial peripheral interface (SPI) for control, supporting a load voltage range of 9V to 26.5V and a supply voltage of 2.5V to 4.5V. The device provides up to 1A output current per channel with a typical on-resistance of 350 milliohms. It integrates comprehensive fault protection including fixed current limiting, open load detection, overtemperature shutdown, and overvoltage protection. Operating within a junction temperature range of -40°C to 150°C, it is housed in a 24-SOIC package.
Feature Summary
- Eight-channel low-side switching capability controlled via SPI interface
- Integrated diagnostic functions including open load detection and overtemperature protection
- Robust fault management with fixed current limiting and overvoltage protection
Applications
- Automotive body electronics load distribution
- Industrial I/O expansion modules
- General-purpose power switching systems
Procurement Notes
Verify component status as the MC33291DW is listed as obsolete or end-of-life. Confirm availability through authorized distributors or secondary market channels. Ensure replacement strategies are evaluated if long-term supply continuity is required for production designs.
Selection Notes
Select this component when an eight-channel SPI-controlled power switch is required for high-current applications. Consider the 24-SOIC package constraints and thermal performance requirements. Verify compatibility with system voltage levels and SPI protocol timing specifications before integration.
Part Context
The MC33291DW belongs to the MC3329x family of eight-output switches from NXP Semiconductors. This series provides integrated power switching and diagnostics for complex load management. The DW suffix indicates the specific 24-SOIC surface-mount package variant within the product line.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Consult official NXP resources for potential obsolescence alternatives.
