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NXP Semiconductors MCZ33879EKR2
- Part No.:
- MCZ33879EKR2
- Manufacturer:
- NXP Semiconductors
- Package:
- 32-SSOP (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
MCZ33879EKR2.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:8 32SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,091
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Product details
Overview
MCZ33879EKR2 from NXP Semiconductors is a configurable octal high-side/low-side serial switch IC with 16-bit SPI control, open-load detection current disable capability, and SMARTMOS power architecture. It delivers 0.75 Ω typical RDS(ON) at 25 °C, supports 5.5–27.5 V VPWR operation, and integrates independent overtemperature protection and +45 V / –20 V output clamping for inductive load switching in automotive body control modules.
For engineers reviewing the MCZ33879EKR2 datasheet, MCZ33879EKR2 pinout, MCZ33879EKR2 application, or MCZ33879EKR2 equivalent, this page provides verified functional identity, HSOP32 package mapping, validated SPI timing (4 MHz max), confirmed open-load detect current disable per-output control, and two production-validated alternative parts with documented configuration and diagnostic differences.
Technical Context
The MCZ33879EKR2 implements eight independently configurable DMOS output drivers-each selectable as high-side or low-side via external PCB routing-with CMOS logic interface and integrated charge pump. Its 16-bit SPI register controls output states, open-load detection enable/disable per channel, and fault reporting via DO pin.
It features dual-mode PWM support on outputs 5 and 6 (via IN5/IN6 pins OR-ed with SPI bits), programmable open-load detection current disable, and cascade fault reporting across daisy-chained devices. Internal reverse-battery protection on VPWR and loss-of-ground/supply immunity ensure robustness in automotive 12 V/24 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output count & type | 8-channel configurable high-side/low-side switch with DMOS power FETs |
| RDS(ON) (typ, 25 °C) | 0.75 Ω - enables efficient 1 A continuous drive of incandescent lamps or solenoids without external heatsinking |
| VPWR operating range | 5.5 V to 27.5 V - supports full automotive battery range including cold-crank and load-dump conditions |
| SPI interface | 16-bit, 3.3 V/5.0 V compatible, up to 4 MHz - allows compact MCU bus expansion with minimal GPIO usage |
| Open-load detect disable | Per-output programmable - eliminates false diagnostics when driving LED loads or high-impedance circuits |
| Output clamp voltage | +45 V (low-side), –20 V (high-side) - suppresses inductive kickback during turn-off without external TVS |
| Standby current | ≤5.0 µA at 13 V VPWR - meets ultra-low-power requirements for always-on vehicle modules |
Pinout & Package
MCZ33879EKR2 is housed in an HSOP32 (SOT1746-1) thermally enhanced plastic package: 32-pin, 0.65 mm pitch, 7.5 × 11 × 2.22 mm body, –40 °C to +125 °C ambient rating. Exposed pad (EP) must be connected to GND for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Digital ground reference | Reference for all logic signals; ties to system ground and EP for noise immunity |
| VDD (Pin 2) | Logic supply input | 3.1–5.5 V supply for SPI interface; device enters Sleep mode if ≤0.8 V |
| S8–S1, D8–D1 (Pins 3, 5–11, 12–13, 20–23, 26–29) | Source/drain output terminals | Eight pairs define high-side (Sx to load, Dx to VPWR) or low-side (Dx to load, Sx to GND) configuration |
| IN5 / IN6 (Pins 14, 19) | PWM direct control inputs | OR-ed with SPI bits to enable hardware PWM on outputs 5 and 6 (max 2 kHz) |
| EN (Pin 15) | Global enable input | Active-high; forces all outputs OFF and disables open-load current when low |
| SCLK / DI / DO / CS (Pins 16–18, 32) | SPI interface signals | 16-bit serial control and fault reporting; DO outputs fault status (logic 1 = fault) |
| VPWR (Pin 31) | Main power input | 5.5–27.5 V battery rail with internal reverse-battery protection and POR circuit |
| EP (Exposed Pad) | Thermal & electrical ground | Must be soldered to PCB ground plane to meet RθJC = 1.2 °C/W and prevent thermal shutdown |
Key Features
| Feature | Design Value |
|---|---|
| Configurable high-/low-side topology | Each of 8 outputs individually routable on PCB - supports mixed H-bridge, relay, lamp, and actuator drives |
| Programmable open-load detect current disable | Per-output control via SPI bit - prevents false fault reporting when driving LEDs or floating loads |
| Independent overtemperature protection | Shuts down individual outputs at 155–185 °C junction - preserves functionality of non-faulted channels |
| Cascade fault reporting | DO pin reports faults across daisy-chained devices - reduces MCU polling overhead in multi-switch systems |
| Internal +45 V / –20 V output clamping | Eliminates need for external transient suppressors in solenoid/relay applications - saves board space and BOM cost |
| Ultra-low standby current | ≤5.0 µA at 13 V VPWR - extends battery life in always-on modules like door modules or lighting controllers |
Applications
| Automotive Body Control Module | Industrial Solenoid Driver |
|---|---|
Use Scenario: Centralized control of door locks, interior lamps, and mirror heaters in 12 V vehicle platforms. IC Role / Device Role / Timing Role: Octal serial switch managing load sequencing, diagnostics, and fail-safe shutdown under microcontroller SPI command. Use Value: Reduces MCU GPIO count by 8× while providing per-channel open-load detection and thermal shutdown - improves system reliability and simplifies firmware. |
Use Scenario: Driving 24 V DC solenoids in factory automation valves with real-time fault feedback. IC Role / Device Role / Timing Role: High-side/low-side configurable power switch delivering 1 A per channel with inductive flyback clamping. Use Value: Integrated +45 V clamp eliminates external TVS diodes; cascade fault reporting enables rapid identification of failed solenoids in multi-valve banks. |
| LED Lighting Controller | Brush DC Motor Starter |
Use Scenario: Controlling segmented LED arrays in commercial vehicle signage with dimming and open-circuit tolerance. IC Role / Device Role / Timing Role: Low-side switch with per-output open-load detect current disable to avoid false fault triggers on high-impedance LED strings. Use Value: Programmable disable prevents erroneous diagnostics during PWM dimming or partial string failure - increases system uptime. |
Use Scenario: Starting small brushed DC motors in HVAC actuators or seat adjusters using H-bridge configuration. IC Role / Device Role / Timing Role: Dual-channel high-/low-side driver (e.g., D1/S1 + D2/S2) implementing half-bridge with independent current limiting. Use Value: 0.75 Ω RDS(ON) minimizes conduction loss; independent overtemperature shutdown protects motor windings during stall conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar configurable octal switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33883EKR2 | Higher RDS(ON) (1.2 Ω typ), no open-load detect current disable, 32-pin HTSSOP | Lacks per-output open-load disable - unsuitable for LED or high-Z load monitoring | Select when lower cost and simpler diagnostics suffice; not drop-in due to missing OCL disable feature |
| TPS4H160-Q1 | 4-channel, 160 mΩ RDS(ON), SPI+PWM, AEC-Q100 Grade 1, 20-pin HTSSOP | Fewer channels, higher current density, no cascade fault reporting | Choose for high-current (2.5 A) single loads where channel count is secondary to efficiency and qualification |
Compared with MCZ33879EKR2, MC33883EKR2 omits open-load detect current disable and offers reduced integration, while TPS4H160-Q1 trades channel count for higher current per channel and automotive qualification - neither matches MCZ33879EKR2's combination of 8 configurable outputs, per-channel OCL disable, and cascade fault reporting.
Availability
MCZ33879EKR2 is available at Aetrix Electronics and suitable for automotive body control modules, industrial solenoid drivers, LED lighting controllers, and brush DC motor starters requiring stable component supply across extended temperature and voltage ranges.
Supply support for MCZ33879EKR2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The MCZ33879EKR2 belongs to NXP's SMARTMOS power switch family, designed specifically for automotive body electronics requiring high reliability, integrated diagnostics, and robust inductive load handling in harsh environments.
FAQ
What is the function of the EN pin on the MCZ33879EKR2?
The EN (Enable) pin is an active-high global control input that activates or deactivates the entire MCZ33879EKR2 device. When EN is low, all eight outputs are forced OFF, open-load detection current is disabled, and the IC enters Sleep mode with ≤5.0 µA VPWR supply current. The MCZ33879EKR2 performs Power-ON Reset on the rising edge of EN, ensuring deterministic startup behavior in automotive systems.
How does the MCZ33879EKR2 support PWM control for motor or lamp dimming?
The MCZ33879EKR2 supports hardware PWM on outputs 5 and 6 via dedicated IN5 and IN6 pins, which are logically OR-ed with corresponding SPI control bits. To use PWM, the SPI bit for that output must be set to logic 0, and the IN5 or IN6 signal driven directly by the MCU. The MCZ33879EKR2 accepts PWM frequencies up to 2.0 kHz, enabling precise dimming of incandescent lamps or speed control of small DC motors without consuming MCU timer resources.
Can the MCZ33879EKR2 be used in both high-side and low-side configurations?
Yes, the MCZ33879EKR2 supports fully configurable high-side and low-side operation per output channel. Each of the eight outputs consists of separate drain (D1–D8) and source (S1–S8) pins. For high-side drive, Sx connects to the load and Dx to VPWR; for low-side drive, Dx connects to the load and Sx to GND. This flexibility allows the MCZ33879EKR2 to replace multiple discrete switches in mixed-load applications such as automotive body control modules.
What protection features does the MCZ33879EKR2 provide against inductive transients?
The MCZ33879EKR2 integrates internal voltage clamping to protect against inductive kickback: +45 V for low-side configurations and –20 V for high-side configurations. These clamps activate automatically during turn-off of inductive loads like solenoids or relays, eliminating the need for external TVS diodes. Additionally, the MCZ33879EKR2 includes short-circuit detection with automatic retry, independent overtemperature shutdown, and reverse-battery protection on the VPWR pin.
Is the MCZ33879EKR2 pin-compatible with other members of the MC33879 family?
Yes, the MCZ33879EKR2 shares identical HSOP32 (SOT1746-1) pinout and footprint with MC33879TEK, MC33879APEK, and MC33879BPEK variants. All share the same 32-pin arrangement, thermal pad layout, and signal assignments. Differences between variants lie in electrical specifications - such as output fault detection thresholds and ESD ratings - not physical connectivity. Thus, MCZ33879EKR2 is a direct drop-in replacement in designs qualified for the base MC33879 family.
MCZ33879EKR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 32-SSOP (0.295", 7.50mm Width) Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Type:
- General Purpose
- Number of Outputs:
- 8
- Ratio - Input:Output:
- 1:8
- Output Configuration:
- High Side or Low Side
- Output Type:
- N-Channel
- Interface:
- SPI
- Voltage - Load:
- 5.5V ~ 26.5V
- Voltage - Supply (Vcc/Vdd):
- 3.1V ~ 5.5V
- Current - Output (Max):
- 600mA
- Rds On (Typ):
- 750mOhm
- Input Type:
- -
- Features:
- -
- Fault Protection:
- Current Limiting (Fixed), Open Load Detect, Over Voltage
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOIC-EP
MCZ33879EKR2 FAQ
1.How can I place an order for MCZ33879EKR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCZ33879EKR2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCZ33879EKR2 reliable?
The price and inventory of MCZ33879EKR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCZ33879EKR2 is usually 5 days.
3.What payment methods are accepted for MCZ33879EKR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCZ33879EKR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCZ33879EKR2?
MCZ33879EKR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCZ33879EKR2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCZ33879EKR2?
For technical support, including MCZ33879EKR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCZ33879EKR2 requirements.
6.How does Aetrix verify that MCZ33879EKR2 is sourced from the original manufacturer or authorized distributors?
All MCZ33879EKR2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCZ33879EKR2 meets industry standards.
7.What is the process for return or replacement of MCZ33879EKR2?
All MCZ33879EKR2 units undergo pre-shipment inspection (PSI). If there is an issue with MCZ33879EKR2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCZ33879EKR2 part is unused and in its original packaging.
Return procedure for MCZ33879EKR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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