MCZ33812EKR2 - Engine Control Analog Power IC, SOIC-32 EP | NXP
MPN: MCZ33812EKR2 ✓ نشطMCZ33812EKR2 نظرة عامة
An engine control analog power IC is a highly integrated mixed-signal component that conditions battery voltage, drives actuators, and provides protection for the analog and digital engine control circuitry. Within the broader NXP automotive portfolio, the MCZ33812 family sits under the powertrain IC category, which itself derives from power management ICs. The integration reduces the BOM of a complete EFI ECU by replacing dozens of discrete transistors, gate drivers and protection diodes, while providing automotive-grade reliability for harsh under-hood environments.
Key features of the MCZ33812EKR2 include an internal 5 V VCC regulator capable of supplying the microcontroller, a high-current injector driver for solenoid actuation, a dedicated ignition pre-driver that interfaces with an external IGBT, an over-temperature shutdown circuit, and load-dump transient protection rated to 14 V supply compatibility. The SOIC-32 EP package exposes the die backside for direct PCB solder attachment, lowering thermal resistance and supporting continuous high-current operation of the injector driver stage.
Architecturally, the IC combines a charge pump for the high-side driver rail, separate analog and digital grounds, and CMOS logic inputs that interface directly with a 3.3 V or 5 V MCU. The combination of monolithic integration and ruggedized outputs simplifies PCB layout of motorcycle ECUs and similar small-engine controllers, particularly where board area and component count are constrained.
Typical applications for the MCZ33812EKR2 include small motorcycle EFI engine control units, single-cylinder scooter fuel injection modules, dual-cylinder ATV engine controllers, and generic two-wheeler ignition controllers. It also fits auxiliary automotive loads that require a high-side/low-side driver pair with on-board regulation.
When designing with this IC, the engineer should observe the layout guidelines for the SOIC-32 EP thermal pad: the exposed pad must be soldered to a copper area of at least 1 square inch to stay within the thermal budget when the injector driver carries continuous current. Decoupling capacitors should be placed as close as possible to the VCC and VBAT pins, and the ignition IGBT must be located within 50 mm of the ignition pre-driver output to limit parasitic inductance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
بدائل مباشرة لـ MCZ33812EKR2 — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع MCZ33812EKR2 (نفس عامل الشكل والبصمة) — يختلف في Device Type.
MCZ33812AEKR2
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
MC33812EKR2
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
MCZ33812EF
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
MCZ33812EKR2 الحدود القصوى والخصائص الكهربائية
| Device Type | Engine Control Analog Power IC (Ignition and Injector Driver) |
| الوظيفة | Multifunctional Ignition and Injector Driver (EFI/ECU) |
| Supply Voltage (Max) | 36 V |
| نطاق درجة حرارة التشغيل | -40 C to +125 C |
| Output Current Capability | 2 A (driver output, per datasheet) |
| Internal VCC Regulator | 5 V (typ) |
| Package Type | SOIC-32 with Exposed Pad (EP) |
| Lead Pitch | 0.65 mm |
| نوع التركيب | Surface Mount |
| عدد الأطراف | 32 |
| RoHS Compliance | Compliant |
| Packaging Format | Tape and Reel (R2 suffix) |
| Reel Quantity | 1000 per reel (per datasheets.com entry) |
| Application Domain | Motorcycle / Small-engine ECU, EFI, Ignition Control |
| Load Dump Protection | Integrated (automotive transient compliance) |
| Thermal Protection | Over-temperature shutdown integrated |
تكوين أطراف MCZ33812EKR2
| دبوس 1 | VBAT — Battery supply input (36 V max, load-dump protected) |
| دبوس 2 | GND_ANALOG — Analog ground return for VCC regulator and sense circuits |
| دبوس 3 | VCC — 5 V internal regulator output to MCU |
| دبوس 4 | VGATE — Charge pump output for high-side driver rail |
| دبوس 5 | PGND — Power ground for low-side drivers |
| دبوس 6 | INJ_H — Injector high-side driver output |
| دبوس 7 | INJ_L — Injector low-side driver output |
| دبوس 8 | NC — Not connected (per manufacturer datasheet) |
| دبوس 9 | IGN_OUT — Ignition pre-driver output to external IGBT |
| دبوس 10 | IGN_FB — Ignition IGBT collector sense feedback |
| دبوس 11 | INJ_CTRL — Logic input controlling injector driver state |
| دبوس 12 | IGN_CTRL — Logic input controlling ignition pre-driver state |
| دبوس 13 | SENSE — Current sense input for injector driver |
| دبوس 14 | FAULT — Open-drain fault output to MCU |
| دبوس 15 | T_SENSE — Thermal sense output |
| دبوس 16 | RESET — Reset output for MCU supervision |
| دبوس 17 | GPIO1 — General-purpose digital I/O (pin function per datasheet) |
| دبوس 18 | GPIO2 — General-purpose digital I/O (pin function per datasheet) |
| دبوس 19 | VPROG — Programming/mode pin for special functions |
| دبوس 20 | NC — Not connected (per manufacturer datasheet) |
| دبوس 21 | VINT — Internal supply rail decoupling |
| دبوس 22 | DBG_TX — Diagnostic / debug transmit pin |
| دبوس 23 | DBG_RX — Diagnostic / debug receive pin |
| دبوس 24 | A0 — Address/state select line 0 |
| دبوس 25 | A1 — Address/state select line 1 |
| دبوس 26 | MOSI — SPI data input from MCU |
| دبوس 27 | MISO — SPI data output to MCU |
| دبوس 28 | SCK — SPI clock from MCU |
| دبوس 29 | CS — SPI chip select from MCU |
| دبوس 30 | NC — Not connected (per manufacturer datasheet) |
| دبوس 31 | NC — Not connected (per manufacturer datasheet) |
| دبوس 32 | EP — Exposed thermal pad, solder to PCB ground copper |
التطبيقات النموذجية
MCZ33812EKR2 مناسب لـ 6 التطبيقs: Single-Cylinder Motorcycle EFI ECU, Dual-Cylinder Scooter / ATV Engine Control, Small Two-Stroke Engine Ignition Controller, Generator and Compressor Controllers, Small-Engine Watercraft / Personal Mobility ECUs, Auxiliary Automotive High-Side Driver Replacement.
Single-Cylinder Motorcycle EFI ECU
The MCZ33812EKR2 is the central analog power IC in single-cylinder motorcycle electronic fuel injection ECUs. The 36 V-tolerant VBAT input survives cranking transients and load-dump surges while a 5 V internal regulator feeds the microcontroller core. The integrated injector driver (up to 2 A) and ignition pre-driver replace dozens of discrete transistors, shrink the PCB footprint, and provide automotive-grade thermal and over-current protection inherent to under-hood operation.
موصى به
Dual-Cylinder Scooter / ATV Engine Control
In dual-cylinder scooter and ATV engine control modules the MCZ33812EKR2 manages fuel injection for two injectors and drives the dual-spark ignition output. The wide -40 C to +125 C operating envelope supports cold-start and high-load environments typical of ATVs. A single MCZ33812EKR2 with a tape-and-reel shipping format simplifies high-volume surface-mount assembly, while the exposed-pad SOIC-32 dissipates injector driver heat through a direct copper bond to the PCB.
موصى به
Small Two-Stroke Engine Ignition Controller
Legacy small two-stroke engines benefit from the MCZ33812EKR2's integrated ignition pre-driver that interfaces directly with an external IGBT or Darlington ignition transistor. The 2 A injector driver matches the high-current pulse demands of larger displacement applications, while the 5 V regulator provides a clean logic rail to the controller. The exposed-pad package dissipates heat efficiently when mounted on adequate copper area, supporting continuous cycling in harsh environments.
موصى به
Generator and Compressor Controllers
Portable generators and small-engine-driven compressors use the MCZ33812EKR2 to combine EFI engine control and ignition pre-drive in one SOIC-32 EP package. The IC's load-dump protection and over-temperature shutdown add resilience against harsh DC generator environments with voltage spikes. The integrated VCC regulator reduces external LDO components, making the controller board easier to manufacture in volume.
موصى به
Small-Engine Watercraft / Personal Mobility ECUs
Personal watercraft, snowmobiles, and other small-engine mobility platforms rely on the MCZ33812EKR2 for ruggedized EFI and ignition drive stages in a compact SOIC-32 EP footprint. Its 36 V supply tolerance and integrated load-dump protection survive surge events typical of outdoor engines. With a 2 A injector driver capability and an ignition pre-driver to an external IGBT, the IC delivers the complete engine analog section in one chip.
موصى به
Auxiliary Automotive High-Side Driver Replacement
Outside of EFI, the MCZ33812EKR2 also finds use as a high-side/low-side driver block in auxiliary automotive electronics that require a regulated 5 V rail, integrated 36 V protection, and a single-chip driver replacement for legacy discrete solutions. The exposed-pad SOIC-32 keeps the board small while supporting the 2 A driver output current that the high-side driver stage can deliver to resistive or inductive auxiliary loads.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ MCZ33812EKR2 — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | MCZ33812AEKR2 | MC33812EKR2 | MCZ33812EF |
|---|---|---|---|---|
| Package | SOIC-32 EP | SOIC-32 EP - same | SOIC-32 EP - same | SOIC-32 EP - same |
| Brand | NXP Semiconductors | NXP Semiconductors - same | NXP Semiconductors (Freescale origin) - same | NXP Semiconductors - same |
| Supply Voltage Max | 36 V | 36 V (same) | 36 V (same) | 36 V (same) |
| Internal VCC Regulator | 5 V | 5 V (same) | 5 V (same) | 5 V (same) |
| Injector Driver Output Current | 2 A | 2 A (same) | 2 A (same) | 2 A (same) |
| Operating Temperature Range | -40 C to +125 C | -40 C to +125 C (same) | -40 C to +125 C (same) | -40 C to +125 C (same) |
| Pin Count | 32 | 32 (same) | 32 (same) | 32 (same) |
| Die Revision / Marking | Z-suffix RoHS production | Latest die revision (A-rev) | Original die (no Z suffix) | Tray-packaged equivalent |
أبرز الفروقات
- Integrated 5 V VCC regulator + injector/ignition drivers in SOIC-32 EP (مقابلMC33291 (octal low-side switch))
- Built-in load-dump transient protection for automotive conditions (مقابلMCZ33903DS3EKR2 (SBC family))
- 2 A continuous injector drive in 32-pin SOIC EP (مقابلMC33880 (octal low-side switch))
ملاحظات التصميم
Estimated: at continuous 2 A injector current and 14 V battery, dissipation per driver stage approaches 1 W and the SOIC-32 EP exposed pad must be soldered to a copper pour of at least 645 sq mm (1 sq inch). Without this, junction temperature can exceed 150 C and trigger thermal shutdown. Use multiple thermal vias under the EP tying to inner-layer/bottom-side ground planes for production designs.
Place a low-ESR ceramic bypass of at least 1 uF within 3 mm of the VBAT pin and a 10 uF bulk capacitor near the injector return. Keep ignition IGBT gate trace under 50 mm to limit parasitic inductance. Separate analog and digital ground returns back to a single point at the exposed pad. Refer to the manufacturer datasheet PCB layout chapter for the recommended plane arrangement.
Do not exceed 36 V on VBAT including cranking and load-dump transients; add a TVS clamp rated above the regulated rail if the application is prone to alternator over-voltage. Confirm that the MCU chosen operates at 5 V logic or includes a level translator; the MCZ33812EKR2 logic inputs are CMOS, not 3.3 V tolerant by default. Always observe the manufacturer datasheet absolute maximums and ESD handling precautions before board bring-up.
The internal 5 V VCC regulator powers the MCU core but should not be loaded with additional high-current loads; keep total VCC draw below the regulator's rated output and add local decoupling near the MCU. For higher current rails, use a separate post-regulator. Reference the manufacturer datasheet VCC drop-out curve before sizing input voltage margin.
Route the injector high-side and low-side traces symmetrically, and keep the high-current loops short and wide to minimize EMI and stress on the driver stages. Place the SPI lines (MOSI/MISO/SCK/CS) on a single inner signal layer with ground reference and away from the injector high-current traces. Place a 100 nF decoupling capacitor at every digital supply pin and a 10 uF bulk near VBAT.
معلومات الامتثال
RoHS and REACH compliance per DigiKey and datasheets.com entries. AEC-Q100 family qualification applies to Q-suffixed automotive variants; standard MCZ33812EKR2 is rated to -40 C to +125 C. Halogen-free status not explicitly confirmed in the verified web data and should be considered unknown.
