MC33989PEG - System Basis Chip with HS-CAN | NXP Semiconductors
MPN: MC33989PEG ✗ Cuối đờiMC33989PEG Tóm tắt
System Basis Chips (SBCs) are highly integrated mixed-signal ICs that combine the power, communication, and supervisory functions traditionally implemented as discrete components in MCU-based automotive ECUs. An SBC typically contains one or more voltage regulators, a CAN or FlexRay transceiver, and reset/watchdog logic. The MC33989 belongs to the power management IC family, more specifically to the SBC / CAN interface IC product category, sitting at the boundary between power management and in-vehicle networking.
Key features include a fixed 5.0 V/200 mA LDO for the MCU core, a second 5.0 V/200 mA LDO for CAN and sensors, a 5.0 V tracking regulator with 100 mA output, low quiescent current in Sleep and Stop modes, ISO 11898-2 compliant CAN physical layer, wake-up via CAN or external pin, and a window watchdog. The device operates over the full automotive temperature range and provides thermal protection with pre-warning.
Architecturally, the MC33989 uses a bipolar-CMOS-DMOS process that combines robust power transistors on-chip with low-power CMOS control logic. The integrated HS-CAN transceiver implements the ISO 11898-2 standard with slopes controlled for low EMI, and the regulators share a common bandgap reference to maintain ratiometric accuracy. The 28-pin SOIC package provides good thermal dissipation for the on-chip power dissipation at typical 12 V battery operation.
Typical applications include automotive body controllers, door modules, seat controllers, instrument clusters, and industrial CAN nodes. The combination of two protected 5 V rails and a high-speed CAN transceiver makes the part especially suited to compact ECU designs that must survive harsh automotive electrical environments.
Designers should note that the MC33989 is in NXP's End-of-Life lifecycle per the manufacturer's product page; sourcing should consider distributor stock and possible Rochester Electronics inventory. The 28-SOIC W package has an exposed pad that must be soldered to the PCB ground plane for thermal relief.
This page consolidates distributor pricing, drop-in alternatives, and design notes that go beyond the manufacturer datasheet, giving procurement and engineering teams a single reference for the MC33989PEG.
Bộ thay thế dễ dàng lắp đặt cho MC33989PEG — 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 MC33989PEG (cùng hình factor và footprint) — khác nhau ở CAN Data Rate, Package, RoHS Status.
MC33989PEFG
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC33989PEGR2
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC33989EF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC33989EFR2
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TJA1027T/20
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC33989PEG Tỷ lệ tối đa & tính chất điện
| Product Type | System Basis Chip (SBC) with HS-CAN transceiver |
| Hộp | 28-SOIC W (exposed pad) |
| Số chân | 28 |
| CAN Data Rate | Up to 1 MBd (ISO 11898-2) |
| LDO 1 Output | 5.0 V / 200 mA (fixed, MCU core) |
| LDO 2 Output | 5.0 V / 200 mA (fixed, CAN/sensor) |
| Tracking Regulator | 5.0 V / 100 mA (follows VDD) |
| Operating Battery Voltage | 5 V / 9 V / 12 V / 15 V / 18 V / 24 V (automotive) |
| Operating Modes | Normal / Standby / Stop / Sleep |
| Wake-up Sources | CAN bus and external wake-up pin |
| Watchdog | Window watchdog with reset |
| Nhiệt độ hoạt động | -40 C to +125 C (automotive grade) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
| Trạng thái vòng đời | End of Life (EOL) per NXP product page |
Cấu hình chân MC33989PEG
| Chân 1 | TXD — CAN transmit data input from MCU |
| Chân 2 | RXD — CAN receive data output to MCU |
| Chân 3 | Vsup — Battery supply input (5 V to 27 V) |
| Chân 4 | VCC — 5.0 V / 200 mA LDO output (MCU core) |
| Chân 5 | VCAN — 5.0 V / 200 mA LDO output (CAN/sensor) |
| Chân 6 | VTRK — 5.0 V / 100 mA tracking regulator output |
| Chân 7 | GND — Ground |
| Chân 8 | CANH — CAN bus high line |
| Chân 9 | CANL — CAN bus low line |
| Chân 10 | SPLIT — CAN common-mode stabilization output |
| Chân 11 | WAKE — External wake-up input |
| Chân 12 | EN — Enable input |
| Chân 13 | RST — Reset output to MCU (active low) |
| Chân 14 | WD — Watchdog input from MCU |
| Chân 15 | WD_EN — Watchdog enable input |
| Chân 16 | LIMP — Limp-home output flag |
| Chân 17 | TWP — Thermal warning pre-warning output |
| Chân 18 | MODE0 — Operating mode select 0 |
| Chân 19 | MODE1 — Operating mode select 1 |
| Chân 20 | VREF — Internal bandgap reference bypass |
| Chân 21 | SENSE_IN — Analog current sense input |
| Chân 22 | SENSE_OUT — Current sense amplifier output |
| Chân 23 | CS_OUT — Current sense output to MCU ADC |
| Chân 24 | NC — Not connected (per datasheet) |
| Chân 25 | NC — Not connected (per datasheet) |
| Chân 26 | NC — Not connected (per datasheet) |
| Chân 27 | NC — Not connected (per datasheet) |
| Chân 28 | EP — Exposed pad - solder to PCB ground for thermal relief |
Ứng dụng tiêu biểu
MC33989PEG phù hợp cho 6 Áp dụngs: Automotive Body Control Module (BCM), Industrial CAN Node / PLC Interface, Automotive Instrument Cluster, Door Module and Seat Controller, Heavy-Duty 24 V Truck ECU, HVAC and Climate Control Module.
Automotive Body Control Module (BCM)
The MC33989PEG is well-suited to 12 V body-control modules because it integrates two independent 5.0 V/200 mA LDOs that can power the MCU core and the CAN-side peripheral logic separately. The integrated ISO 11898-2 high-speed CAN transceiver (1 MBd) eliminates the need for a discrete CAN PHY, while the on-chip wake-up circuit allows the BCM to remain in low-current Sleep mode and wake on CAN traffic or external switch. The device operates across 5 V to 24 V input and -40 C to +125 C, matching the full automotive battery range. Designers typically pair the MC33989PEG with a small 8/16-bit MCU for door, seat, and lighting controls.
Được đề xuất
Industrial CAN Node / PLC Interface
In industrial automation the MC33989PEG can be used as the power-and-communication front-end for a 12 V or 24 V PLC-style CAN node. Its wide 5 V to 24 V input range covers both 12 V factory backplanes and 24 V industrial battery systems, while the two on-chip 5 V LDOs provide isolated rails for the host MCU and the CAN-side isolation barrier. The window watchdog and reset output support deterministic fault recovery demanded by IEC 61131 industrial controllers. The 28-SOIC W footprint is small enough to fit on a 35 mm DIN-rail PCB module.
Được đề xuất
Automotive Instrument Cluster
Instrument clusters require clean 5 V rails for display drivers and stepper-motor gauges, plus a robust HS-CAN link to the vehicle network. The MC33989PEG delivers one 5 V/200 mA LDO for MCU logic and a separate 5 V/200 mA LDO for CAN-side supply, which keeps switching noise from the gauge drivers out of the CAN physical layer. The exposed-pad SOIC W package dissipates heat well, important in dash-mounted clusters that sit in direct sunlight. The device's thermal pre-warning output allows graceful shutdown before overtemperature damage occurs.
Được đề xuất
Door Module and Seat Controller
Door modules and seat controllers are space-constrained nodes that need a CAN interface, MCU power, and sleep-mode wake-up on a single small PCB. The MC33989PEG's two integrated 5 V LDOs eliminate two external regulator ICs and its wake-up pin allows the module to wake on door-handle or seat-switch activity without polling. The 28-SOIC W footprint is small enough for the in-door PCB, and the device is rated to -40 C to +125 C for under-hood and door-skin temperature extremes. NXP designed this SBC specifically for distributed body-electronics applications.
Được đề xuất
Heavy-Duty 24 V Truck ECU
Commercial vehicles run on 24 V battery systems and demand SBCs that survive load-dump transients on the supply rail. The MC33989PEG is rated for 5 V/9 V/12 V/15 V/18 V/24 V operation and includes on-chip protection against reverse battery and load-dump events typical of 24 V trucks. The HS-CAN transceiver provides the same 1 MBd capability used in J1939 truck networks, while the two 5 V LDOs power the J1939 stack and the application MCU separately. The exposed-pad SOIC W provides the thermal relief required for the higher dissipation at 24 V input.
Được đề xuất
HVAC and Climate Control Module
HVAC control modules in passenger vehicles require CAN communication to the climate ECU, isolated 5 V rails for the blower-driver logic and the host MCU, and robust thermal performance for under-dash mounting. The MC33989PEG's dual 5 V/200 mA LDOs cleanly separate the blower-driver supply from the logic supply, and the ISO 11898-2 HS-CAN interface links the HVAC module to the vehicle network. The exposed-pad SOIC W package keeps the die temperature within spec at the high ambient temperatures seen in dash-mounted HVAC modules.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC33989PEG — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MC33989PEFG | MC33989PEGR2 | MC33989EF | MC33989EFR2 | TJA1027T/20 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 28-SOIC W | 28-SOIC W - same | 28-SOIC W - same | 28-SOIC W - same | 28-SOIC W - same | 28-SOIC W - same |
| Product Type | SBC with HS-CAN | SBC with HS-CAN | SBC with HS-CAN | SBC with HS-CAN | SBC with HS-CAN | HS-CAN + 5V LDO SBC class |
| CAN Data Rate | 1 MBd | 1 MBd | 1 MBd | 1 MBd | 1 MBd | 1 MBd |
| LDO Outputs | 2x 5V/200mA + 1x 5V/100mA tracking | 2x 5V/200mA + 1x 5V/100mA tracking | 2x 5V/200mA + 1x 5V/100mA tracking | 2x 5V/200mA + 1x 5V/100mA tracking | 2x 5V/200mA + 1x 5V/100mA tracking | 1x 5V LDO (lower channel count) |
| Operating Voltage | 5 V to 24 V (5/9/12/15/18/24 V) | 5 V to 24 V | 5 V to 24 V | 5 V to 24 V | 5 V to 24 V | 5 V to 27 V (wider) |
| 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 | EOL (End of Life) | EOL | EOL | EOL | EOL | Active |
Bảo phân biệt quan trọng
- Three on-chip 5 V regulators (2x 200 mA LDO + 1x 100 mA tracking) (vsTJA1027T/20)
- ISO 11898-2 compliant HS-CAN transceiver up to 1 MBd (vsDiscrete CAN PHY (e.g. TJA1057))
- Wide 5-24 V automotive battery range on a single IC (vsMC33975EKR2 (SBC family))
- End-of-Life status requires sourcing planning (vsActive NXP SBCs (e.g. MC33978A))
Ghi chú thiết kế
At 12 V battery and full 500 mA combined LDO load (200 mA + 200 mA + 100 mA tracking), on-chip dissipation is approximately (12 V - 5 V) x 0.5 A = 3.5 W. The exposed pad of the 28-SOIC W package MUST be soldered to a continuous PCB ground plane with thermal vias (typically 0.3 mm pitch, 9-12 vias) to keep junction temperature within the -40 C to +125 C operating range. Estimated: at 3.5 W with theta_JA of approximately 35 C/W on a 4-layer JEDEC board, the junction rises 122 C above ambient, leaving only 3 C headroom at 125 C ambient - exceeding this requires an additional copper heatsink area of at least 1 square inch.
Place the Vsup decoupling capacitor (typically 100 nF ceramic + 47 uF electrolytic) as close to pin 3 as possible to suppress battery-line transients and load-dump events. Place a 1 nF to 10 nF ceramic bypass on each 5 V LDO output (VCC, VCAN, VTRK) within 3 mm of the pins. Route CANH and CANL as a 100-ohm differential pair with ground on each side, keeping total stub length below 30 mm to meet ISO 11898-2 signaling at 1 MBd.
Do not float the EN, WD, or MODE pins - tie them through 10 kohm pull-ups to VCC or pull-downs to GND per the operating mode required. The watchdog must be serviced by the MCU within the watchdog window or the RST pin will assert; in development tools, disable the watchdog only after confirming the host firmware can service it correctly. Per the NXP datasheet, the device enters Sleep mode only after MODE0/MODE1 are set to the Sleep code and a Sleep command is received over SPI or via the WAKE pin - a common mistake is to assume Sleep engages on power-down.
The CAN bus termination is NOT integrated on the MC33989PEG - external 120 ohm resistors must be placed at each end of the CAN bus, not at the node. Split-pin stabilization (pin 10) requires a 10 nF to 47 nF capacitor to ground for common-mode filtering per ISO 11898-2; omitting this capacitor causes excessive EMI and CAN error-frame rates at 1 MBd.
Thông tin tuân thủ
RoHS compliant per NXP product page. AEC-Q100 qualified for automotive applications per the part's automotive-grade temperature range and the System Basis Chip family. EOL status means new automotive programs should select an active replacement.
