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MC33999EKR2
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Product Detailed Parameters
- Description：IC PWR SWITCH N-CH 1:16 54SOIC
- Series：-
- Mfr：NXP USA Inc.
- Package：Tape & Reel (TR)
- Switch Type：General Purpose
- Number of Outputs：16
- Ratio - Input:Output：1:16
- Output Configuration：Low Side
- Output Type：N-Channel
- Interface：SPI
- Voltage - Load：5V ~ 27V
- Voltage - Supply (Vcc/Vdd)：1.5V ~ 3V
- Current - Output (Max)：900mA
- Rds On (Typ)：550mOhm
- Input Type：-
- Features：PWM Input
- 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：54-SOIC-EP
- Package / Case：54-BSSOP (0.295", 7.50mm Width) Exposed Pad
- Grade：-
- Qualification：-
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Overview
The MC33999EKR2 is a low-side power switch integrated circuit from NXP Semiconductors, featuring 16 independent output channels in a SOIC-EP-54 package. It operates within a supply voltage range of 5 V to 27 V and supports an output current of 350 mA per channel. The device includes programmable current limiting between 900 mA and 2.5 A, with a maximum on-resistance of 550 mOhms. Switching times are limited to 10 us for both rise and fall durations. It functions reliably across an extended temperature range from -40 C to +125 C.
Feature Summary
- Provides 16-channel low-side switching capability for distributed power distribution applications
- Integrates programmable current limit protection to safeguard connected loads
- Features fast switching characteristics with controlled rise and fall times
Applications
- Automotive body electronics load distribution
- Multi-channel actuator control systems
- General purpose power switching in industrial environments
Procurement Notes
Verify component authenticity through authorized distributors as the part is marked as obsolete. Confirm package integrity and moisture sensitivity level handling requirements before assembly. Check for valid replacement options due to end-of-life status. Ensure design-in compatibility with existing system voltage and thermal constraints.
Selection Notes
Select this component for designs requiring multiple isolated low-side switches with integrated protection. Evaluate thermal performance given the 550 mOhm on-resistance and 1.7 W power dissipation rating. Consider the SOIC-EP-54 footprint for PCB layout. Verify that the 27 V maximum supply voltage aligns with system bus specifications.
Part Context
This device belongs to the MC33999 series of power management ICs designed for automotive and industrial applications. It serves as a central component for managing multiple electrical loads efficiently. The integration of protection features reduces external component count and simplifies system architecture compared to discrete solutions.
Replacement Considerations
Check for direct pin-to-pin replacements within the MC33999 family or updated NXP portfolios. Verify functional equivalence regarding channel count, current ratings, and package dimensions before substitution.
