MCZ33811EGR2 - 5-Ch Solenoid Monitor IC, SPI, 16-SOIC | NXP
부품 번호: MCZ33811EGR2 ✗ 단종| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $6.42 | $6.42 |
| 10 | $5.78 | $57.80 |
| 100 | $5.05 | $505.00 |
| 500 | $4.32 | $2,160.00 |
| 1,000 | $3.78 | $3,780.00 |
MCZ33811EGR2 개요
A solenoid monitor IC is a specialized power-management and supervisory block that sits alongside the low-side solenoid drivers in a transmission, engine, or body controller and continuously checks that each inductive load is being driven correctly. It belongs to the broader hierarchy of supervisory / monitoring ICs -> power-management ICs -> mixed-signal automotive semiconductors. The MCZ33811EGR2's job is to detect open-load, short-to-battery, short-to-ground and over-current conditions on five independent solenoid outputs without disturbing the actuation path itself, which is why its supply current is held to roughly 1 mA even with all five channels active.
Key features include five independent solenoid monitoring channels, an SPI interface for diagnostics and programmable thresholds, integrated fault latching and reporting, an automotive temperature grade rated for under-hood environments, and the wide-body 16-SOIC footprint that is shared across NXP's 33xxx analog companion family. The architecture uses five analog comparators with a precision bandgap-derived threshold, a digital SPI slave, and on-chip fault registers that flag each channel independently so the host MCU only needs to poll one register per channel rather than five separate status lines.
Typical applications include automatic transmission solenoid monitoring, engine management solenoid banks, electronic stability control hydraulic valves, body controller load monitoring, and any 12 V automotive subsystem where a microcontroller must verify that five solenoids are being actuated reliably and detect wiring faults before they propagate into drivability or emissions problems.
When designing with the MCZ33811EGR2, place 100 nF bypass capacitors on the VBAT supply pin as close to the package as possible and keep the SPI traces short and ground-referenced to preserve noise margin in the harsh automotive environment. The SPI MOSI, MISO, SCLK and CS pins require 4.7 kΩ pull-ups on the open-drain MISO line per the NXP application circuit.
This page synthesizes distributor pricing, drop-in alternatives and practical design notes that are not found in the manufacturer datasheet alone, including a comparison of the MCZ33811EGR2 against the MCZ33996EK, MCZ33903DS3EK and other members of NXP's analog companion family.
드롭인 대체품: MCZ33811EGR2 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
MCZ33811EG
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MC33PT2000AFR2
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MC33PT2000AF
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MCZ33996EK
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MCZ33903DS3EK
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MCZ33811EGR2 사양
| 기능 | 5-Channel Solenoid Monitor IC |
| Number of Monitored Channels | 5 |
| Supply Voltage Range | 7 V to 17 V |
| 공급 전류 | 1 mA (typical) |
| 인터페이스 | SPI (Serial Peripheral Interface) |
| 핀 수 | 16 |
| 패키지 / 케이스 | 16-SOIC (0.295 inch / 7.50 mm width) |
| Packaging | Tape & Reel (TR) |
| 동작 온도 | -40 °C to +125 °C (automotive grade) |
| Temperature Grade | Automotive |
| 실장 유형 | Surface Mount |
| Terminal Form | Gull Wing |
| Package Code | SOP (SOIC wide) |
| Package Shape | Rectangular |
| RoHS 상태 | Compliant |
| 할로겐 프리 | Compliant (per datasheet listing) |
| ECCN | EAR99 |
MCZ33811EGR2 핀 구성
| 핀 1 | VBAT — Battery supply input (7 V to 17 V) |
| 핀 2 | GND — Ground |
| 핀 3 | MON1 — Solenoid monitor input channel 1 |
| 핀 4 | MON2 — Solenoid monitor input channel 2 |
| 핀 5 | MON3 — Solenoid monitor input channel 3 |
| 핀 6 | MON4 — Solenoid monitor input channel 4 |
| 핀 7 | MON5 — Solenoid monitor input channel 5 |
| 핀 8 | NC — Not connected (per datasheet) |
| 핀 9 | CS — SPI chip select (active low) |
| 핀 10 | SCLK — SPI serial clock |
| 핀 11 | MOSI — SPI master-out slave-in data |
| 핀 12 | MISO — SPI master-in slave-out data (open-drain, requires pull-up) |
| 핀 13 | INT — Interrupt / fault flag output |
| 핀 14 | NC — Not connected (per datasheet) |
| 핀 15 | NC — Not connected (per datasheet) |
| 핀 16 | NC — Not connected (per datasheet) |
일반적인 애플리케이션
MCZ33811EGR2 적합 용도: 6 애플리케이션s: Automatic Transmission Solenoid Monitoring, Engine Management Solenoid Banks, Electronic Stability Control Valve Monitoring, Body Controller Load Diagnostics, Industrial 12 V Solenoid Banks, 12 V Battery-Backed Safety Module Diagnostics.
Automatic Transmission Solenoid Monitoring
The MCZ33811EGR2's 5-channel solenoid monitor architecture directly matches the typical transmission control unit, where 4-6 shift solenoids and pressure control solenoids must be continuously verified. Each of the five independent monitoring stages compares the switched battery rail against the internal threshold and reports open-load, short-to-battery and short-to-ground faults over SPI, letting the TCU software detect stuck or wiring-damaged solenoids before they cause drivability complaints. The 7 V to 17 V supply tolerance spans cold-cranking dips and load-dump transients without false tripping. Designers typically route each monitored solenoid through the MCZ33811EGR2 with a 100 nF bypass on VBAT and rely on the SPI fault register polling scheme.
추천
Engine Management Solenoid Banks
Engine management ECUs control variable valve timing solenoids, purge control valves, EGR solenoids and canister purge devices, all of which the MCZ33811EGR2 can supervise in groups of five. The device's 1 mA typical quiescent supply current keeps the monitor's own draw negligible against the engine control unit's battery budget. The SPI interface lets the host MCU read all five fault bits in a single transaction, which is critical in the millisecond-scale control loops typical of engine management. With automotive -40 °C to +125 °C temperature grading and halogen-free RoHS compliance, the part fits under-hood ECU design rules and current emission-control regulations.
추천
Electronic Stability Control Valve Monitoring
Electronic stability control and ABS modules drive several hydraulic isolation and dump valves that the MCZ33811EGR2 can monitor for proper actuation. The 5-channel count aligns with typical ESC valve clusters where each wheel's isolation, dump and pressure-modulation solenoids need independent electrical verification. The SPI diagnostics shorten fault-detection latency versus discrete comparator schemes, which matters in safety-critical braking loops. The 16-SOIC wide footprint allows easy routing of the monitor away from the high-current ABS pump driver traces, and the 7 V to 17 V supply range covers the worst-case battery conditions during ABS activation.
추천
Body Controller Load Diagnostics
Body control modules increasingly supervise door-lock, trunk-release and lighting solenoids, and the MCZ33811EGR2 fits well in BCMs that need to detect wiring faults on five such loads. The integrated SPI fault reporting eliminates the need for five discrete GPIO lines back to the host MCU, freeing the BCM for other LIN/CAN traffic. Operating from a single 12 V nominal rail simplifies the BCM's power tree, and the SOIC-16 wide footprint is easy to hand-rework or optically inspect during prototyping. The halogen-free and RoHS-compliant package also satisfies end-customer environmental requirements for modern vehicle programs.
추천
Industrial 12 V Solenoid Banks
Outside automotive, the MCZ33811EGR2 also monitors five 12 V or 24 V industrial solenoid banks such as those used in hydraulic directional-control valves, pneumatic cylinder manifolds and process-control pilot valves. The 7 V to 17 V supply covers the nominal 12 V industrial bus with margin, and the -40 °C to +125 °C temperature rating suits outdoor cabinet and factory-floor installations. SPI fault reporting integrates cleanly with industrial PLC or industrial-PC host controllers. Designers must add an external pre-regulator if the system bus is 24 V nominal, since the upper supply limit is 17 V.
추천
12 V Battery-Backed Safety Module Diagnostics
Safety modules such as airbag controllers, seatbelt pretensioner drivers and battery-disconnect units can use the MCZ33811EGR2 to monitor up to five actuator channels for proper pre-deployment verification. The SPI fault reporting and latching allow the safety MCU to perform a self-test at power-up and confirm that all five channels respond before the module is armed. The automotive temperature grade and small 16-SOIC wide footprint support the size-constrained safety module layouts typical of modern restraint systems.
추천
추천 제품 요약
엔지니어링 참조 데이터: MCZ33811EGR2 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MCZ33811EG | MC33PT2000AFR2 | MC33PT2000AF | MCZ33996EK | MCZ33903DS3EK |
|---|---|---|---|---|---|---|
| Package | 16-SOIC wide (7.50 mm) | 16-SOIC wide (7.50 mm) - same | 16-SOIC wide - same | 16-SOIC wide - same | 32-SOIC wide - larger | 32-SOIC wide - larger |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Function | 5-ch solenoid monitor (SPI) | 5-ch solenoid monitor (SPI) | 5-ch solenoid monitor (SPI) | 5-ch solenoid monitor (SPI) | 16-output switch/pre-driver | System Basis Chip (Vreg + CAN + LIN) |
| Supply Voltage | 7 V to 17 V | 7 V to 17 V | 7 V to 17 V | 7 V to 17 V | 5.5 V to 27 V | 5.5 V to 27 V (SBC) |
| Supply Current | 1 mA (typical) | 1 mA | 1 mA | 1 mA | 10 mA (driver) | 40 mA (SBC) |
| Channels | 5 | 5 | 5 | 5 | 16 (driver) | Multiple (SBC) |
| Interface | SPI | SPI | SPI | SPI | SPI | SPI + CAN + LIN |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C |
| Lifecycle Status | Obsolete (EOL) | Obsolete (EOL) | Active / Last-time-buy | Active / Last-time-buy | Active | Active |
주요 차별점
- 5 dedicated solenoid monitor channels with integrated SPI diagnostics (vs MCZ33996EK)
- Compact 16-SOIC wide footprint for solenoid monitor function (vs MCZ33903DS3EK)
- Drop-in compatibility with MCZ33811EG (tray variant) (vs MCZ33811EG)
설계 노트
Place a 100 nF X7R ceramic bypass capacitor as close as possible to the VBAT pin (pin 1) and a 10 µF bulk capacitor on the battery rail feeding the MCZ33811EGR2. The supply range is 7 V to 17 V nominal, so for 24 V industrial systems add a pre-regulator before VBAT. Reverse-battery and load-dump transients must be clamped externally per the NXP application circuit.
Route the five MON1-MON5 traces away from switching solenoid driver traces and keep them ground-referenced; add a small RC filter (10 kΩ + 1 nF) at each MON input if the trace exceeds 50 mm in noisy under-hood environments. The MISO line is open-drain, so a 4.7 kΩ pull-up to the host MCU's logic rail is required. Keep CS, SCLK, MOSI short and reference the SPI bus ground at a single point to avoid ground loops through the inductive loads.
Do not exceed 17 V on VBAT or apply reverse polarity - the monitor has no internal protection. Do not leave the CS pin floating; tie it high to disable SPI until the host MCU drives it low. Do not rely on the MON inputs as power outputs - they are voltage-sense inputs only. Always poll the fault register after power-up to clear latched faults from prior power cycles.
The 16-SOIC wide package has a θJA of roughly 80 °C/W on a standard JEDEC 4-layer test board. At 1 mA supply current the dissipation is below 20 mW, so thermal management is not critical for the monitor IC itself; however, place it away from high-power drivers on the PCB to avoid hot-spot coupling. For under-hood modules exceeding 85 °C ambient, follow the NXP PCB layout guide for derating and copper-pour sizing.
SPI clock rates up to 4 MHz are supported per the NXP application section; if the bus is shared with other SPI devices, place the MCZ33811EGR2 on its own CS line and use the MISO high-impedance state during CS-high to avoid bus contention. Add 33 Ω series resistors on SCLK and MOSI when routing through connectors to dampen ringing in long harnesses.
규정 준수 정보
RoHS compliant and halogen-free per the NXP/Freescale datasheet listing; -40 °C to +125 °C automotive temperature grade supports AEC-Q100 qualification context; ECCN EAR99.
