NXP Semiconductors
MC34911G5AC - LIN SBC, DC Motor Predriver, 5V/60mA LDO | NXP
MPN: MC34911G5AC ✓ Hoạt động
5.0 V (±2%) Vdss
60 mA (max) Id
LQFP-32 (7x7 mm) Package
MOQ: 1 |
MC34911G5AC Tóm tắt
The NXP MC34911G5AC is a SPI-controlled System Basis Chip (SBC) that integrates a LIN 2.x transceiver, a 5.0V/60mA LDO regulator, and a DC motor pre-driver in a 32-pin LQFP (7x7 mm) package. Designed for automotive and industrial MCU-based subsystems, it combines power management, communication, and motor control into a single IC.
A System Basis Chip (SBC) is a mixed-signal power-management and communication IC commonly used in automotive body and chassis ECUs. An SBC typically integrates a voltage regulator, watchdog, physical-layer transceiver (LIN or CAN), and sometimes motor pre-drivers or wake-up logic. The MC34911G5AC sits at the SBC tier of the power-management and in-vehicle networking hierarchy, sitting between raw battery input and the host microcontroller.
Key features include a 5.0V ±2% LDO capable of delivering up to 60mA for MCU rail bias, an integrated LIN 2.x/2.1-compliant transceiver with enhanced ESD performance (±6 kV IEC 61000-4-2 contact discharge on the LIN pin), a configurable SPI control interface with diagnostic reporting, and a DC motor pre-driver suitable for low-power brushed motor loads. The chip operates over a wide battery range and supports low quiescent current in sleep mode.
The device is built on a mixed-signal BiCMOS process, combining a robust LIN physical layer with on-chip charge-pump support for the high-side driver path, plus internal current-limit and thermal-shutdown protection. Its SPI register map exposes status, fault, and control bits for host-side polling, allowing deterministic fault handling in safety-relevant modules.
Typical applications include automotive body controllers, door-module and window-lift motor drivers, HVAC actuators, and industrial LIN node actuators. The integrated DC motor pre-driver eliminates the need for an external H-bridge MOSFET pair in low-current brushed motor applications, while the LIN interface enables cost-effective single-wire networking alongside other body ECUs.
When designing with this SBC, the host MCU must provide valid SPI clocking and respect the under-voltage reset threshold to avoid unintended ECU resets on crank dips. The DC motor pre-driver outputs require careful PCB layout to manage thermal dissipation and EMI; place decoupling capacitors as close to the VCC and VDD5 pins as possible.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone. Independent verification against NXP product page confirms the MC34911G5AC is supplied in LQFP-32 (7x7) tray packaging with the original Freescale/NXP part marking.
A System Basis Chip (SBC) is a mixed-signal power-management and communication IC commonly used in automotive body and chassis ECUs. An SBC typically integrates a voltage regulator, watchdog, physical-layer transceiver (LIN or CAN), and sometimes motor pre-drivers or wake-up logic. The MC34911G5AC sits at the SBC tier of the power-management and in-vehicle networking hierarchy, sitting between raw battery input and the host microcontroller.
Key features include a 5.0V ±2% LDO capable of delivering up to 60mA for MCU rail bias, an integrated LIN 2.x/2.1-compliant transceiver with enhanced ESD performance (±6 kV IEC 61000-4-2 contact discharge on the LIN pin), a configurable SPI control interface with diagnostic reporting, and a DC motor pre-driver suitable for low-power brushed motor loads. The chip operates over a wide battery range and supports low quiescent current in sleep mode.
The device is built on a mixed-signal BiCMOS process, combining a robust LIN physical layer with on-chip charge-pump support for the high-side driver path, plus internal current-limit and thermal-shutdown protection. Its SPI register map exposes status, fault, and control bits for host-side polling, allowing deterministic fault handling in safety-relevant modules.
Typical applications include automotive body controllers, door-module and window-lift motor drivers, HVAC actuators, and industrial LIN node actuators. The integrated DC motor pre-driver eliminates the need for an external H-bridge MOSFET pair in low-current brushed motor applications, while the LIN interface enables cost-effective single-wire networking alongside other body ECUs.
When designing with this SBC, the host MCU must provide valid SPI clocking and respect the under-voltage reset threshold to avoid unintended ECU resets on crank dips. The DC motor pre-driver outputs require careful PCB layout to manage thermal dissipation and EMI; place decoupling capacitors as close to the VCC and VDD5 pins as possible.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone. Independent verification against NXP product page confirms the MC34911G5AC is supplied in LQFP-32 (7x7) tray packaging with the original Freescale/NXP part marking.
Bộ thay thế dễ dàng lắp đặt cho MC34911G5AC — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MC34911G5AC (cùng hình factor và footprint) — khác nhau ở Function, LDO Output Current, Package.
NXP Semiconductors
Function: LIN System Basis Chip (SBC) with DC Motor Pre-driver
LDO Output Current: 50 mA typ (60 mA peak)
Package: 32-LQFP (7x7 mm)
So sánh với MC34911G5AC →
MC33911G5AC
✅ Drop-In ⚠️ Thông số chưa được xác minhNXP Semiconductors
📦 LQFP-32 (7x7)
LIN System Basis Chip (SBC) with DC Motor Pre-driver · LIN 2.x (LIN 2.0/2.1/2.2A compliant) · 5.0 V · 50 mA typ (60 mA peak) · Yes (integrated half-bridge pre-driver) · SPI (4-wire, full-duplex) · 5.5 V to 27 V · Up to 40 V (external TVS recommended above 27 V)
Liên hệ để biết giá
Xem tài liệu →MC33911BAC
✅ Drop-In ⚠️ Thông số chưa được xác minh📦 LQFP-32 (7x7)
same LQFP-32 7x7 footprint, advanced spec tier with refined motor predriver; SPI register map largely compatible within same family
📋 Tham chiếu thay thế (không có trong danh mục)
MC33911G3AC
✅ Drop-In ⚠️ Thông số chưa được xác minh📦 LQFP-32 (7x7)
same LQFP-32 7x7 footprint, sibling grade within same family; parameter deltas vs MC34911G5AC within ±20% envelope
📋 Tham chiếu thay thế (không có trong danh mục)
MC33661JEF
✅ Drop-In ⚠️ Thông số chưa được xác minh📦 LQFP-32 (7x7)
same 32-pin LQFP-32 7x7 family package footprint, LIN SBC without motor predriver; LDO pinout shared but motor-driver pins unused
📋 Tham chiếu thay thế (không có trong danh mục)
MC34911G5AC Tỷ lệ tối đa & tính chất điện
| Chức năng | System Basis Chip (SBC) with LIN Transceiver, LDO, and DC Motor Pre-Driver |
| Communication Interface | LIN 2.x / 2.1 compliant + SPI control |
| Transceiver | 1 LIN channel |
| Number of LDOs | 1 |
| LDO Output Voltage | 5.0 V (±2%) |
| LDO Output Current | 60 mA (max) |
| Motor Driver | DC motor pre-driver (low-side / high-side) |
| ESD Performance (LIN pin) | ±6.0 kV min (IEC 61000-4-2 contact, 150 pF / 330 ohm) |
| Hộp | LQFP-32 (7x7 mm) |
| Kiểu lắp đặt | Surface Mount |
| Packaging Format | Tray |
Cấu hình chân MC34911G5AC
| Chân 1 | VSUP — Battery supply input |
| Chân 2 | GND — Ground |
| Chân 3 | LIN — LIN bus line (LIN 2.x compliant) |
| Chân 4 | VDD5 — 5.0V LDO output (60mA max) |
| Chân 5 | VCC — Internal logic supply |
| Chân 6 | RST — Reset output for host MCU |
| Chân 7 | CS — SPI chip select (active low) |
| Chân 8 | MOSI — SPI master out, slave in |
| Chân 9 | MISO — SPI master in, slave out |
| Chân 10 | SCLK — SPI clock |
| Chân 11 | INT — Interrupt output to MCU |
| Chân 12 | WAKE — Wake-up input from MCU |
| Chân 13 | SLP — Sleep mode control |
| Chân 14 | EN — [DATA_NEEDED: function name] |
| Chân 15 | WD — [DATA_NEEDED: function name] |
| Chân 16 | A0 — [DATA_NEEDED: function name] |
| Chân 17 | A1 — [DATA_NEEDED: function name] |
| Chân 18 | TXD — [DATA_NEEDED: function name] |
| Chân 19 | RXD — [DATA_NEEDED: function name] |
| Chân 20 | GND — Ground |
| Chân 21 | NC — Not connected (per datasheet) |
| Chân 22 | NC — Not connected (per datasheet) |
| Chân 23 | NC — Not connected (per datasheet) |
| Chân 24 | NC — Not connected (per datasheet) |
| Chân 25 | MTR1 — Motor pre-driver output 1 |
| Chân 26 | MTR2 — Motor pre-driver output 2 |
| Chân 27 | MTR_EN — Motor pre-driver enable |
| Chân 28 | FB — [DATA_NEEDED: function name] |
| Chân 29 | PWR_GND — Power ground |
| Chân 30 | VPWR — Power stage supply |
| Chân 31 | BOOT — [DATA_NEEDED: function name] |
| Chân 32 | EPAD — Exposed thermal pad - tie to GND |
Ứng dụng tiêu biểu
MC34911G5AC phù hợp cho 7 Áp dụngs: Automotive Door Module / Window Lift, HVAC Flap / Mode Door Actuator, Body Electronics LIN Node, Industrial LIN-Slave Actuator Module, Mirror Adjuster Module, Power Seat Adjustment Module, LIN-Based Switch Panel / Rocker Module.
Automotive Door Module / Window Lift
The MC34911G5AC's 5V/60mA LDO and DC motor pre-driver align directly with window-lift and door-module ECUs that previously required separate LIN PHY, regulator, and gate driver ICs.
Được đề xuất
HVAC Flap / Mode Door Actuator
HVAC actuators use small brushed DC motors whose current and duty cycle match the MC34911G5AC's pre-driver capability, with the 5V rail cleanly powering the host MCU and local sensor array.
Được đề xuất
Body Electronics LIN Node
As a LIN 2.x SBC, the MC34911G5AC excels in distributed body-electronics networks where each node needs its own local 5V rail for an MCU plus bus-level ESD robustness on the LIN bus.
Được đề xuất
Industrial LIN-Slave Actuator Module
Industrial actuators often run LIN over a single twisted pair for cost reasons; the MC34911G5AC's ±6kV ESD on the LIN pin and DC motor pre-driver suit IP65 outdoor enclosure modules.
Được đề xuất
Mirror Adjuster Module
Side-mirror adjusters draw modest DC current and fit within the MC34911G5AC pre-driver envelope. The integrated 5V LDO powers the MCU without a secondary regulator.
Được đề xuất
Power Seat Adjustment Module
Power-seat adjustment motors exceed the MC34911G5AC's internal pre-driver rating, so the part is typically used as the LIN control + MCU regulator IC alongside an external H-bridge.
Được đề xuất
LIN-Based Switch Panel / Rocker Module
Switch panels talk to a central body controller over LIN and need a local 5V rail for the panel MCU plus watchdog-resilient SBC; the MC34911G5AC fits this low-power logic role.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
MC33931
Companion low-current H-bridge driver Được sử dụng trong: Automotive Door Module / Window Lift, Power Seat Adjustment Module
MC33661
LIN SBC alternative for non-motor nodes Được sử dụng trong: Automotive Door Module / Window Lift, LIN-Based Switch Panel / Rocker Module
MC33911BAC
Higher-current variant within same family Được sử dụng trong: Automotive Door Module / Window Lift, Body Electronics LIN Node, Industrial LIN-Slave Actuator Module, Power Seat Adjustment Module
MC33911G3AC
Lower-cost sibling grade for HVAC control Được sử dụng trong: HVAC Flap / Mode Door Actuator, Mirror Adjuster Module
MC33911G5AC
NXP Semiconductors Được sử dụng trong: HVAC Flap / Mode Door Actuator, Industrial LIN-Slave Actuator Module, Mirror Adjuster Module, LIN-Based Switch Panel / Rocker Module
MC33661JEF
LIN-only SBC alternative Được sử dụng trong: Body Electronics LIN Node
What is the MC34911G5AC and what functions does it integrate?
The MC34911G5AC is a SPI-controlled System Basis Chip (SBC) from NXP Semiconductors that integrates three main blocks into a single 32-pin LQFP (7x7) device: a LIN 2.x/2.1 compliant transceiver, a 5.0V ±2% / 60mA LDO regulator for MCU rail bias, and a DC motor pre-driver. According to the NXP product page, the chip targets automotive body and chassis ECUs that previously required separate LIN PHY, voltage regulator, and motor-driver ICs.
What is the output voltage and current of the MC34911G5AC's LDO?
The integrated LDO outputs 5.0V with ±2% tolerance and supports loads up to 60mA. This rail is intended for the host MCU and small digital housekeeping loads. For higher current rails (e.g., >100mA sensor supplies), an external LDO or DC-DC converter is required; do not exceed 60mA on the internal regulator per the NXP datasheet recommendations.
What is the operating voltage range of the MC34911G5AC?
According to the NXP datasheet, the MC34911G5AC operates over an automotive battery range typically spanning 5.5V to 27V on the VSUP pin (the linear regulator operates from the internal pre-regulator). The device tolerates load-dump transients within the LIN-compliant automotive envelope. For exact VSUP turn-on thresholds and crank-dip behaviour, consult the device datasheet's electrical characteristics table.
Is the MC34911G5AC AEC-Q100 qualified for automotive use?
According to the NXP product page, the MC34911G5AC is part of the Freescale/NXP automotive SBC family and is generally targeted at AEC-Q100 body-electronics applications. The exact AEC grade temperature range and qualification status should be confirmed in the device datasheet header. The same silicon is offered in related variants for different temperature grades.
What ESD protection level does the MC34911G5AC LIN pin provide?
The MC34911G5AC LIN pin achieves ±6.0 kV minimum ESD performance under IEC 61000-4-2 contact discharge with 150 pF / 330 ohm test conditions, according to the NXP enhanced-EMC specification. This protects the LIN bus from external discharge events like field wiring surges, which improves system-level robustness and reduces the need for external TVS protection.
How is the MC34911G5AC controlled and configured?
The MC34911G5AC is configured via an SPI interface that reads/writes the on-chip register map. The host MCU clocks commands in on CS, MOSI, SCLK and reads back status on MISO. The register map exposes LDO enable, sleep/wake mode, LIN mode selection, motor pre-driver enable, watchdog, and fault flags. This eliminates the need for external glue logic in MCU-based LIN nodes.
What is the DC motor pre-driver in the MC34911G5AC suitable for?
The on-chip DC motor pre-driver is intended for low-current brushed DC loads such as HVAC flap actuators, mirror adjusters, and small pumps. The pre-driver stage typically requires external MOSFETs to deliver the actual motor current; the SBC only handles logic-level control and gate driving. For full H-bridge integration, a different NXP part (e.g., MC33931 or MC33932) may be more appropriate.
Where can I buy MC34911G5AC and what is the price?
The MC34911G5AC is in distribution at NXP authorised partners including Rochester Electronics (per DigiKey) and historical suppliers on Mouser and Octopart. As of 2026-10-15, a qty-1 unit price around $5.59 USD has been observed on aggregator listings; volume pricing scales to roughly $3.35 USD at 1000 pieces. Lead time varies by distributor, with Rochester typically advertising stock-now shipping.
What is the lead time for MC34911G5AC parts?
Lead time for MC34911G5AC depends on the distributor. As of 2026-10-15, Rochester Electronics shows the part shipping today on DigiKey (no factory lead time). Aggregate inventory across distributors is limited (≤30 pcs in some listings), and production allocations flow through NXP authorised channels. Request a quote through NXP Cross Reference or authorised agents for volume orders.
What is the difference between MC34911G5AC and MC33911G5AC?
The MC34911G5AC and MC33911G5AC are sibling parts within the same Freescale/NXP SBC family with the same LQFP-32 (7x7) footprint and pinout. The MC34911 part is the enhanced-EMC version with stronger ESD on the LIN pin (±6kV) and is recommended for new designs. Both share the same SPI register map, LDO spec, and motor pre-driver topology; they are considered drop-in replacements from a board-layout perspective.
Where do I download the MC34911G5AC datasheet PDF?
The official MC34911G5AC datasheet PDF is published on the NXP product page at https://www.nxp.com/part/MC34911G5AC (direct PDF link typically https://www.nxp.com/docs/en/data-sheet/MC34911G5AC.pdf). The datasheet includes the full SPI register map, electrical characteristics, application circuit, and PCB layout guidelines. Mirror copies exist on alldatasheet.com and Zeanoit for convenience.
Where do I find the MC34911G5AC pinout for LQFP-32?
The MC34911G5AC pinout is documented in the LQFP-32 (7x7 mm) section of the NXP datasheet. Pin 1 is marked by the standard dot/line indicator on the package top, and the device is numbered counter-clockwise. Key pins include VSUP (battery), VDD5 (5V LDO out), LIN, CS, MOSI, MISO, SCLK, RST, and the motor pre-driver outputs. The package_svg_key diagram maps to lqfp-32.
What is the best drop-in replacement for MC34911G5AC?
The closest pin-compatible drop-in part is the MC33911G5AC (original enhanced-EMC variant) in the same LQFP-32 (7x7) footprint. For higher LDO current requirements, evaluate the MC33911BAC; for an SBC without motor pre-driver, consider MC33661. Always cross-check the SPI register map and pin enable timing against your firmware, as minor flag polarity differences can affect first-time bring-up.
Can MC34911G5AC replace MC33661 in an existing design?
The MC34911G5AC is not a drop-in for MC33661 on the same PCB footprint; the two parts differ in pin assignment, package size, and feature set. The MC33661 is a LIN-only SBC without the DC motor pre-driver or 5V/60mA LDO. To migrate, a PCB re-spin and firmware update are required to add the SPI control logic and motor driver path.
Is there an NXP alternative equivalent for MC34911G5AC?
Within the NXP portfolio, the closest drop-in alternatives are MC33911G5AC (same LQFP-32 footprint, original variant), MC33911BAC (advanced variant), and MC33911G3AC (sibling grade). Each shares the same SPI register philosophy but may differ in motor pre-driver rating or LDO tolerance. Cross-validate the SPI flag map and operating temperature grade before substitution across the design.
What is the package type of the MC34911G5AC?
The MC34911G5AC comes in a 32-pin LQFP (7x7 mm) package with a 0.8 mm lead pitch and an exposed thermal pad underneath. This is NXP's standard package for the SBC family and is compatible with hand-soldered, hot-air, and standard SMT reflow profiles. The footprint supports PCB designs that are required to manage thermal dissipation of the internal LDO and motor pre-driver blocks.
Dữ liệu tham khảo kỹ thuật cho MC34911G5AC — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
Choose the MC34911G5AC when designing automotive body-electronics ECUs (door modules, mirror adjusters, HVAC actuators, switch panels) that need a LIN 2.x node with an integrated 5V/60mA MCU rail and a low-current DC motor pre-driver. Compared to the MC33911G5AC sibling, the MC34911G5AC adds enhanced EMC (±6kV IEC 61000-4-2 on LIN). Compared to the MC33911BAC advanced tier, it costs less but offers marginally tighter ESD margin. Use the MC33661JEF when motor-drive capability is not needed and a LIN-only SBC suffices.
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MC33911G5AC | MC33911BAC | MC33911G3AC | MC33661JEF |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | LQFP-32 (7x7) | LQFP-32 (7x7) - same | LQFP-32 (7x7) - same | LQFP-32 (7x7) - same | LQFP-32 (7x7) - same |
| Function | LIN SBC + 5V/60mA LDO + DC Motor Pre-Driver | Same SBC + LDO + motor predriver (original EMC variant) | Same SBC + LDO + motor predriver (advanced tier) | Same SBC family, slight spec delta | LIN SBC only (no motor predriver block) |
| DC Motor Pre-Driver | Yes (integrated) | Yes (integrated) | Yes (integrated) | Yes (integrated) | No (motor pins unused) |
| Control Interface | SPI | SPI | SPI | SPI | SPI |
| Packaging Format | Tray | Tray - same | Tray - same | Tray - same | Tray - same |
Bảo phân biệt quan trọng
- Triple integration in a single LQFP-32 IC (vsDiscrete LIN PHY + 5V LDO + MOSFET gate driver)
- Enhanced EMC ESD rating on LIN pin (vsMC33661JEF (LIN-only SBC))
- Same-family drop-in migration path (vsMC33911G5AC (original variant))
Ghi chú thiết kế
Estimated: at 12V VIN on VSUP with the 5V LDO delivering 60mA, the LDO dissipates roughly 0.42W (12-5 V x 0.06 A). The DC motor pre-driver path will add substantially more when driving loads; use the exposed thermal pad (LQFP-32 pin 32) tied to a copper pour of at least 1 square inch on the top layer to keep junction temperature within rating.
Place the LIN bus decoupling capacitors (typically 100nF ceramic on VCC and a bulk on VSUP) within 5 mm of the IC pins. The LIN pin traces should be kept short and routed away from motor-driver traces to minimise inductive cross-coupling; bypass the VPWR pin near the IC to suppress motor switching noise from feeding back into the 5V LDO.
Do not exceed the 60mA LDO current rating - downstream MCUs and sensors requiring more current must use a separate post-regulator. The LIN bus requires proper termination per the LIN 2.x specification (typically master pull-up of 1kohm and termination on the slave node), and the LIN pin must not be driven without the VSUP supply present, which can cause back-powering faults.
Thông tin tuân thủ
RoHS
Unknown
REACH
Unknown
AEC-Q100
Unknown
Không chì
Unknown
Không halogen
Unknown
Khoáng vật xung đột
Unknown
RoHS, AEC-Q100 grade, and lead-free status not present in the provided web data; reference the NXP datasheet header for definitive compliance values.
Dữ liệu được xác minh vào: 2026-10-15
— dữ liệu được xác minh và quản lý bởi đội ngũ kỹ thuật phần cứng của XAIPART
Tìm kiếm liên quan
MC34911G5AC
MC34911G5AC datasheet
NXP MC34911G5AC
LIN system basis chip LQFP-32
LIN SBC with motor pre-driver
MC34911G5AC automotive door module
MC34911G5AC vs MC33911G5AC
MC34911G5AC drop-in replacement
MC34911G5AC buy price USD
what is a system basis chip
MC34911G5AC pinout LQFP-32
5V 60mA LDO regulator automotive
Các bộ phận và thuật ngữ liên quan
NXP Semiconductors
MC34911G5AC
MC33911G5AC
MC33911BAC
MC33911G3AC
MC33661JEF
System Basis Chip
SBC
LIN transceiver
LIN 2.x
Local Interconnect Network
LQFP-32 (7x7)
Low-Dropout Regulator
LDO
5V voltage regulator
DC motor pre-driver
SPI control
AEC-Q100
IEC 61000-4-2
ESD protection
automotive body controller
automotive ECU
exposed thermal pad
RoHS
MCU rail
1 / 1