MCZ33976EG - Dual Gauge Driver SPI, 26V, SOIC-24 | NXP
MPN: MCZ33976EG ✓ نشطMCZ33976EG نظرة عامة
A stepper motor gauge driver is a specialized dual H-Bridge peripheral that converts SPI commands into the precise bipolar coil currents needed to drive air-core or stepper-based analog pointers in instrument clusters. Two gauge movements can be driven from one IC, which simplifies cluster BOM and PCB area. The MCZ33976EG sits in the hierarchy: dual H-Bridge -> motor driver IC -> peripheral driver -> power management and signaling IC. Each output pair forms a full bridge capable of sourcing and sinking current bidirectionally through the two gauge coils, which are typically wound on a common stator with a permanent-magnet rotor.
Key features include SPI communication with daisy-chain capability, programmable PWM current regulation per gauge, configurable response time for pointer damping, integrated flyback diodes protection handling, open quies-current current, and a fault feedback flag. The MCZ33976EG is the automotive-grade variant of the family, qualified to AEC-Q100 standards for under-dash and instrument-cluster use. The 24-SOIC package with exposed pad aids thermal dissipation across the four H-Bridges.
Typical applications include automotive instrument cluster gauges (speedometer, tachometer, fuel, temperature), motorcycle dashboards, industrial process indicator dials, HVAC position indicators, and any two-coil air-core meter requiring SPI-actuated closed-loop current regulation. Designers should bias the EN/DIAG pin correctly and observe the data-sheets worst-case thermal resistance on a 2-layer PCB to keep junction temperature inside the +150C rating when driving high-current movements.
بدائل مباشرة لـ MCZ33976EG — 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 MCZ33976EG (نفس عامل الشكل والبصمة) — يختلف في Package, RoHS Status.
MCZ33976EGR2
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
MC33976EGR2
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
MC33976EG
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
MCZ33975EG
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
MCZ33977EG
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←MCZ33976EG الحدود القصوى والخصائص الكهربائية
| الوظيفة | Dual stepper motor gauge driver |
| Motor Type | Stepper / Bipolar |
| عدد المخارج | 2 dual H-Bridges (4 half-bridge outputs) |
| تكوين الخرج | Half Bridge (dual H-Bridge per gauge) |
| الواجهة | SPI (Serial Peripheral Interface) |
| Supply Voltage (Vcc) | 6.5 V to 26 V |
| Logic Supply Voltage | 4.5 V to 5.5 V |
| Output Current (per channel) | 100 mA |
| Operating Temperature (Ambient) | -40 C to +125 C |
| Junction Temperature (Max) | +150 C |
| العلبة | 24-SOIC (Gull-Wing, 7.5 mil pitch) |
| نوع التركيب | Surface Mount |
| Automotive Grade | AEC-Q100 qualified |
| Configuration Time | Configurable response time (SPI programmable) |
| حالة RoHS | Compliant |
تكوين أطراف MCZ33976EG
| دبوس 1 | OUT1A — H-Bridge 1 output A |
| دبوس 2 | OUT1B — H-Bridge 1 output B |
| دبوس 3 | VCC — Motor supply (6.5V-26V) |
| دبوس 4 | OUT2A — H-Bridge 2 output A |
| دبوس 5 | OUT2B — H-Bridge 2 output B |
| دبوس 6 | GND — Power ground |
| دبوس 7 | VPWR — Logic/motor supply input |
| دبوس 8 | EN/DIAG — Enable and diagnostic flag |
| دبوس 9 | CS — SPI chip select (active low) |
| دبوس 10 | SCLK — SPI serial clock |
| دبوس 11 | MOSI — SPI master-out slave-in |
| دبوس 12 | MISO — SPI master-in slave-out |
| دبوس 13 | FAULT — Fault flag output |
| دبوس 14 | VDD — Logic supply (5V) |
| دبوس 15 | VSS — Logic ground |
| دبوس 16 | NC — Not connected (per datasheet) |
| دبوس 17 | NC — Not connected (per datasheet) |
| دبوس 18 | NC — Not connected (per datasheet) |
| دبوس 19 | NC — Not connected (per datasheet) |
| دبوس 20 | NC — Not connected (per datasheet) |
| دبوس 21 | NC — Not connected (per datasheet) |
| دبوس 22 | NC — Not connected (per datasheet) |
| دبوس 23 | NC — Not connected (per datasheet) |
| دبوس 24 | NC — Not connected (per datasheet) |
التطبيقات النموذجية
MCZ33976EG مناسب لـ 6 التطبيقs: Automotive Instrument Cluster Gauges, Motorcycle Dashboard Indicators, Industrial Process Indicator Dials, HVAC Valve Position Indicators, Marine Gauge Panels, Two-Coil Air-Core Meter Replacement.
Automotive Instrument Cluster Gauges
The MCZ33976EG drives dual air-core or stepper gauges such as speedometer and tachometer pointers from a single SPI bus, eliminating host-MCU commutation code. With 100 mA per H-Bridge output and 6.5V-26V supply tolerance, it handles 12V automotive rails with margin for cranking dips. The AEC-Q100 qualification and -40C to +125C ambient rating allow direct placement on under-dash cluster PCBs behind the speedometer face.
موصى به
Motorcycle Dashboard Indicators
The MCZ33976EG is well suited to motorcycle dashboards where two gauge movements (typically speed and RPM) must operate from a single SPI-controllable device on a 12V lead-acid battery rail. The 100 mA per channel current is enough for compact air-core movements used in two-wheeler clusters, and the configurable response time register lets designers tune pointer damping for vibration-heavy environments. AEC-Q100 qualification helps with OEM reliability audits.
موصى به
Industrial Process Indicator Dials
In factory process panels, the MCZ33976EG provides two SPI-driven dial movements for variables such as flow rate and tank level. Its 6.5V to 26V supply tolerates 24V industrial backplanes, and the 24-SOIC footprint reflows cleanly onto conformal-coated boards. The wide -40C to +125C ambient rating supports unheated cabinet installations, while SPI daisy-chaining keeps MCU pin count low across multi-panel machines.
موصى به
HVAC Valve Position Indicators
The MCZ33976EG drives the dual rotary indicators used on commercial HVAC control heads, showing mode and fan-speed settings with smooth pointer motion. The dual H-Bridges give each dial its own regulated current loop, removing the need for mechanical detents in the rotary encoder. SPI control lets a small MCU sweep the dial during calibration routines, and the 24-SOIC package fits the slim profile of wall-mounted thermostats.
موصى به
Marine Gauge Panels
The MCZ33976EG is used in marine helm panels to drive speed and tachometer gauges from a 12V or 24V boat battery, with SPI command from a central helm MCU. The 6.5V to 26V supply range covers both common marine voltages, and the device's configurable response time softens pointer motion in choppy-water vibration. AEC-Q100 derating and conformal-coating friendly 24-SOIC footprint suit saltwater-cabin installations.
موصى به
Two-Coil Air-Core Meter Replacement
The MCZ33976EG is ideal for retrofit boards that previously used discrete L297/L298 stepper drive chains, replacing them with one IC and one SPI command per gauge update. The 100 mA per H-Bridge channel covers the typical 50-80 mA current of air-core movements, and configurable damping reproduces the same pointer feel as the original analog drive. The 24-SOIC footprint allows direct drop-in to existing SO-24 footprints on legacy boards after a SPI firmware port.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ MCZ33976EG — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | MCZ33976EGR2 | MC33976EGR2 | MC33976EG | MCZ33975EG | MCZ33977EG |
|---|---|---|---|---|---|---|
| Package | 24-SOIC | 24-SOIC - same | 24-SOIC - same | 24-SOIC - same | 24-SOIC - same | 24-SOIC - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Function | Dual gauge driver (2 H-Bridges) | Dual gauge driver (2 H-Bridges) | Dual gauge driver (2 H-Bridges) | Dual gauge driver (2 H-Bridges) | Single gauge driver (1 H-Bridge pair) | Triple gauge driver (3 H-Bridge pairs) |
| Supply Voltage | 6.5 V to 26 V | 6.5 V to 26 V | 6.5 V to 26 V | 6.5 V to 26 V | 6.5 V to 26 V | 6.5 V to 26 V |
| Output Current per Channel | 100 mA | 100 mA | 100 mA | 100 mA | 100 mA | 100 mA |
| Interface | SPI | SPI | SPI | SPI | SPI | SPI |
| AEC-Q100 | Qualified | Qualified | Not Z-prefix | Not Z-prefix | Qualified | Qualified |
| Channels | 2 dual H-Bridges | 2 dual H-Bridges | 2 dual H-Bridges | 2 dual H-Bridges | 1 dual H-Bridge (-50%) | 3 dual H-Bridges (+50%) |
أبرز الفروقات
- Dual-gauge single-package integration (مقابلMCZ33975EG)
- Configurable response time register (مقابلMCZ33977EG)
- AEC-Q100 Z-prefix automotive qualification (مقابلMC33976EG (non-Z))
ملاحظات التصميم
Each H-Bridge in the MCZ33976EG can dissipate up to roughly 1.0W into the 24-SOIC thermal pad at 100 mA and 26V supply under worst-case stall. Estimated: at 12V and 100 mA continuous per channel, power dissipation is about 1.2W per channel. Use at least 1 square inch of 2-oz copper under the exposed pad and four thermal vias to keep junction temperature below +150C, especially in sealed automotive clusters with limited convection.
Place the SPI bus traces (SCLK, MOSI, MISO, CS) away from the H-Bridge output traces to avoid coupling pointer noise into the digital bus. According to the NXP layout guidance, use a 4-layer board with a dedicated ground plane under the SOIC-24 footprint to give the four H-Bridge return currents a low-impedance path. Add 100 nF ceramic decoupling on VDD close to pin 14 and 10 uF bulk on VCC close to pin 3.
Do not hot-plug VPWR (pin 7) without a controlled ramp; reverse-battery transients on automotive 12V rails can exceed the absolute-maximum supply rating and damage the IC. Add a TVS diode and series Schottky on VPWR, and confirm the EN/DIAG pin is held low until VDD logic supply is stable, otherwise the SPI state machine can latch into an undefined condition. Failure to honor these start-up sequences is the most common field return cause for instrument-cluster gauge drivers.
معلومات الامتثال
AEC-Q100 qualified per NXP product page (Z-prefix denotes automotive grade). RoHS and REACH compliance per NXP product dossier. Halogen-free status not stated in verified data.
