MC33289DWR2 - Dual High-Side Switch 40mOhm 27V | NXP SOIC-20
MPN: MC33289DWR2 ✓ AktifMC33289DWR2 Ringkasan
What is a high-side switch? A high-side switch is a semiconductor device that connects a load to the positive supply rail (in contrast to a low-side switch that switches the ground path). High-side switches are widely used in automotive body electronics because they offer inherent short-to-ground protection, simplify fault diagnosis with load-diagnostics, and eliminate the need for mechanical relays in many ECU-driven applications.
Key features include integrated charge pump for gate drive, programmable current limiting, open-load detection in both on and off states, and thermal shutdown with auto-recovery. Each channel can be controlled independently through TTL-compatible CMOS inputs, supporting PWM operation for lamp dimming or solenoid proportional control. The device also includes fault feedback via a status flag for microcontroller-driven diagnostics.
The MC33289DWR2 is built on NXP's SMARTMOS process technology, combining vertical DMOS power transistors with CMOS logic on a single die. This monolithic integration reduces PCB area, eliminates parasitic inductance between discrete stages, and provides consistent thermal coupling between the two switches for symmetric current sharing in dual-channel loads.
Typical applications include automotive body control modules driving solenoid valves, relay coil drivers, DC motor half-bridges, and lamp driver circuits. The integrated protection features make it particularly suitable for under-hood and under-body ECU applications where harsh electrical environments demand robust fault handling.
When designing with this device, ensure adequate decoupling at the VCC pin and place the reverse-battery protection diode as close to the connector as possible. Heat dissipation is dominated by RDS(on) and load current: at 5 A per channel, total dissipation is approximately 2 W, requiring copper-pour thermal management on the PCB.
This page synthesizes distributor pricing, pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternatif penggantian untuk MC33289DWR2 — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian MC33289DWR2 (sama faktor bentuk dan footprint) — berbeda di dalam Package, Product Type.
MC33289DW
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
BTS621L1E3128ABUMA1
✅ Drop-InKontak untuk harga
Lihat Datasheet →BTS720L1
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
MC33289DWR2 Rating Maksimal & Karakteristik Listrik
| Product Type | Dual High-Side Switch (DHSS) |
| Topologi | 2 x High-Side N-MOSFET switches |
| On-State Resistance (RDSon) | 40 mOhm (per channel) |
| Supply Voltage Range (VCC) | 6 V to 27 V |
| Maximum Transient Voltage | 40 V (load dump tolerant) |
| Jumlah Output | 2 |
| Input Compatibility | TTL/CMOS compatible logic inputs |
| Fault Protection | Current limit, thermal shutdown, open-load detect |
| Status Feedback | Yes (fault flag output) |
| Suhu Kerja | -40C to +125C (automotive grade) |
| Paket | 20-SOIC (0.295 inch, 7.50 mm width) |
| Tipe Mounting | Surface Mount |
| Automotive Grade | Yes (AEC-Q100 qualified) |
| Charge Pump | Integrated (gate drive) |
Konfigurasi Pin MC33289DWR2
| Pin produk 1 | ST1 — Status flag output for channel 1 (open-drain fault feedback) |
| Pin produk 2 | IN1 — Logic input for channel 1 (TTL/CMOS compatible) |
| Pin produk 3 | OUT1 — High-side output 1 (load connection) |
| Pin produk 4 | VCC — Supply voltage (6 V to 27 V, 40 V transient tolerant) |
| Pin produk 5 | VCC — Supply voltage (VCC pin tied internally) |
| Pin produk 6 | GND — Ground |
| Pin produk 7 | GND — Ground (tied internally) |
| Pin produk 8 | OUT2 — High-side output 2 (load connection) |
| Pin produk 9 | IN2 — Logic input for channel 2 (TTL/CMOS compatible) |
| Pin produk 10 | ST2 — Status flag output for channel 2 (open-drain fault feedback) |
| Pin produk 11 | NC — Not connected (per datasheet) |
| Pin produk 12 | NC — Not connected (per datasheet) |
| Pin produk 13 | NC — Not connected (per datasheet) |
| Pin produk 14 | NC — Not connected (per datasheet) |
| Pin produk 15 | NC — Not connected (per datasheet) |
| Pin produk 16 | NC — Not connected (per datasheet) |
| Pin produk 17 | NC — Not connected (per datasheet) |
| Pin produk 18 | NC — Not connected (per datasheet) |
| Pin produk 19 | NC — Not connected (per datasheet) |
| Pin produk 20 | NC — Not connected (per datasheet) |
Aplikasi Umum
MC33289DWR2 cocok untuk 6 aplikasis: Automotive Solenoid Valve Driver, Lamp Driver Module (Headlamp/Tail/Indicator), DC Motor Half-Bridge Driver, Relay Coil Replacement Driver, Body Control Module (BCM) Load Switch, Industrial 24V PLC Output Module.
Automotive Solenoid Valve Driver
The MC33289DWR2 is purpose-built for driving proportional solenoid valves in 12 V and 24 V automotive systems. Its 40 mOhm RDS(on) per channel keeps conduction losses below 1 W at 5 A, while integrated PWM-capable TTL inputs allow closed-loop current profiling for transmission shift solenoids, EGR valves, and HVAC flap actuators. The 40 V load-dump tolerance and open-load detection in both on and off states match the harsh electrical environment of under-hood ECUs, eliminating the need for discrete TVS clamps. Place 100 nF ceramic decoupling on VCC close to the IC, and route each OUT pin directly to the solenoid connector to minimize parasitic inductance that otherwise creates large flyback transients.
Direkomendasikan
Lamp Driver Module (Headlamp/Tail/Indicator)
Drive automotive incandescent and LED lamps up to a few amps per channel using the MC33289DWR2's two independent high-side outputs. PWM input control enables smooth dimming for daytime running lights and matrix-style headlamp modulation without external FETs. The integrated thermal shutdown protects against overload conditions such as short-to-ground or bulb-out, while open-load detection flags lamp failure to the body control module for driver display alerts. At full 27 V supply and 2 A load per channel, dissipation is approximately 1.1 W total, manageable with the standard SOIC-20 thermal pad layout on a 2 oz copper pour.
Direkomendasikan
DC Motor Half-Bridge Driver
Pair two MC33289DWR2 channels in a half-bridge configuration with an external low-side switch to drive brushed DC motors for window lift, seat adjusters, and HVAC blowers. Each channel's TTL input accepts direction-polarity logic from a microcontroller, while the fault flag pin signals stall or short-circuit events. Compared to a fully integrated H-bridge, this topology allows independent sizing of the high-side and low-side switches for asymmetric current handling. The 6 V minimum supply keeps the motor running through cold-crank events down to typical automotive cranking dips.
Direkomendasikan
Relay Coil Replacement Driver
Use the MC33289DWR2 as a solid-state replacement for mechanical automotive relays, eliminating coil inductance, contact bounce, and audible click. The device's 40 V load-dump tolerance handles the inductive kickback typical of relay coil substitution without external snubbers. TTL inputs allow direct logic-level control from 3.3 V or 5 V microcontrollers, while integrated current limiting prevents burnout if the load is shorted. Particularly suitable for switching resistive heating elements and accessory power rails in body control modules.
Direkomendasikan
Body Control Module (BCM) Load Switch
The MC33289DWR2 serves as the workhorse load driver inside BCMs that manage door locks, mirrors, and accessory outputs in modern vehicles. With two independent high-side switches in a compact SOIC-20 footprint, multiple MC33289DWR2 devices can populate a BCM to switch every powered feature while sharing a common diagnostic MCU bus. AEC-Q100 qualification ensures reliability across automotive temperature and EMC profiles. The fault flag output supports OBD-II readiness monitoring by reporting failed outputs back to the BCM master processor.
Direkomendasikan
Industrial 24V PLC Output Module
The MC33289DWR2 suits industrial 24 V PLC digital output cards where dual-channel high-side switching replaces mechanical relay output modules. Each channel handles the inductive kickback of PLC field wiring without external protection, and the wide 6-27 V supply range tolerates typical industrial supply variations and motor back-EMF. TTL inputs interface directly to 3.3 V or 5 V logic from PLC backplane controllers. Open-load detection enables predictive maintenance alerts for broken field wiring or disconnected actuators.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk MC33289DWR2 — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | MC33289DW | BTS621L1 | BTS720L1 |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | Infineon | Infineon |
| Package | 20-SOIC (0.295 inch) | 20-SOIC (0.295 inch) - same | 20-SOIC (PG-DSO-20) - same footprint | 20-SOIC (PG-DSO-20) - same footprint |
| Topology | Dual High-Side Switch | Dual High-Side Switch | Dual High-Side Switch (PROFET) | Dual High-Side Switch (PROFET) |
| On-State Resistance (per channel) | 40 mOhm | 40 mOhm | 50 mOhm | 60 mOhm (higher due to SPI diagnostics) |
| Supply Voltage Range | 6 V to 27 V | 6 V to 27 V | 5 V to 34 V (wider) | 5 V to 34 V (wider) |
| Logic Input Type | TTL/CMOS parallel input | TTL/CMOS parallel input | TTL/CMOS parallel input + analog current sense | SPI serial input |
| Fault Feedback | ST1 / ST2 open-drain status flags | ST1 / ST2 open-drain status flags | Analog IS current-sense pin | SPI diagnostic register |
| Automotive Grade | Yes (AEC-Q100) | Yes (AEC-Q100) | Yes (AEC-Q100) | Yes (AEC-Q100) |
Diferensiator Kunci
- Lower on-state resistance per channel (vsBTS621L1)
- Simple parallel logic control without SPI overhead (vsBTS720L1)
- Two independent fault flags for granular diagnostics (vsBTS621L1)
Catatan Desain
Estimated: at 5 A load per channel with VIN = 14 V and RDS(on) = 40 mOhm, per-channel conduction loss is approximately (5^2 x 0.040) = 1.0 W, totaling 2 W for both channels. The 20-SOIC package has a typical theta_JA around 70-80 C/W on a 1 oz 2-layer board and approximately 35-45 C/W on a 2 oz board with thermal vias; verified measurement recommended. Heat dissipation requires the SOIC-20 exposed copper pad, if present, to be soldered to a copper pour with thermal vias to the bottom layer. For sustained 5 A per channel operation, derate the load or use forced air cooling.
Place a 100 nF X7R ceramic bypass capacitor directly between VCC pins (4 and 5) and GND (pins 6 and 7), within 5 mm of the package. Add a bulk electrolytic or tantalum capacitor (>=10 uF) near the IC to absorb load-dump and cold-crank transient energy. Route high-current OUT1 and OUT2 traces using 0.5 mm to 1 mm wide copper at 2 oz to minimize voltage drop and thermal rise. Keep logic-level ST and IN traces separated from the power traces to avoid coupling noise into the MCU interface.
Do not connect an inductive load without ensuring the integrated free-wheeling diodes can absorb the energy; otherwise add an external TVS clamp across the load. Verify that VIN never exceeds 40 V even during jump-start events; the device is rated to 27 V continuous but tolerates 40 V transient. The ST pins are open-drain and require pull-up resistors (typically 10 kOhm to 5 V) to report faults correctly. Do not leave NC pins floating in production boards - they should be connected to ground or VCC per the manufacturer's recommendation in the application note.
Informasi Konformitas
AEC-Q100 qualification confirmed via distributor listings and Vyrian datasheet attributes (Automotive temperature grade). RoHS, REACH, lead-free, halogen-free, and conflict-minerals status were not explicitly returned in the verified web data; [DATA_NEEDED] is used in the specs array.
