MC33289DWR2 - Dual High-Side Switch 40mOhm 27V | NXP SOIC-20
料号： MC33289DWR2 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.15 | $215.00 |
| 500 | $1.85 | $925.00 |
| 1,000 | $1.62 | $1,620.00 |
MC33289DWR2 概述
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.
直接替换替代料： MC33289DWR2 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MC33289DWR2 （相同外形与封装尺寸） ——差异在于 Package, Product Type.
快速对比工具——选择替代料号进行并排对比：
MC33289DW
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
BTS621L1E3128ABUMA1
✅ 直接替换✓ 有现货
$2.45 / 个
查看数据手册 →BTS720L1
✅ 直接替换📋 参考替代料（不在目录中）
MC33289DWR2 最大额定值与电气特性
| Product Type | Dual High-Side Switch (DHSS) |
| 拓扑 | 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) |
| 输出数量 | 2 |
| Input Compatibility | TTL/CMOS compatible logic inputs |
| Fault Protection | Current limit, thermal shutdown, open-load detect |
| Status Feedback | Yes (fault flag output) |
| 工作温度 | -40C to +125C (automotive grade) |
| 封装 | 20-SOIC (0.295 inch, 7.50 mm width) |
| 安装类型 | Surface Mount |
| Automotive Grade | Yes (AEC-Q100 qualified) |
| Charge Pump | Integrated (gate drive) |
MC33289DWR2 引脚配置
| 引脚 1 | ST1 — Status flag output for channel 1 (open-drain fault feedback) |
| 引脚 2 | IN1 — Logic input for channel 1 (TTL/CMOS compatible) |
| 引脚 3 | OUT1 — High-side output 1 (load connection) |
| 引脚 4 | VCC — Supply voltage (6 V to 27 V, 40 V transient tolerant) |
| 引脚 5 | VCC — Supply voltage (VCC pin tied internally) |
| 引脚 6 | GND — Ground |
| 引脚 7 | GND — Ground (tied internally) |
| 引脚 8 | OUT2 — High-side output 2 (load connection) |
| 引脚 9 | IN2 — Logic input for channel 2 (TTL/CMOS compatible) |
| 引脚 10 | ST2 — Status flag output for channel 2 (open-drain fault feedback) |
| 引脚 11 | NC — Not connected (per datasheet) |
| 引脚 12 | NC — Not connected (per datasheet) |
| 引脚 13 | NC — Not connected (per datasheet) |
| 引脚 14 | NC — Not connected (per datasheet) |
| 引脚 15 | NC — Not connected (per datasheet) |
| 引脚 16 | NC — Not connected (per datasheet) |
| 引脚 17 | NC — Not connected (per datasheet) |
| 引脚 18 | NC — Not connected (per datasheet) |
| 引脚 19 | NC — Not connected (per datasheet) |
| 引脚 20 | NC — Not connected (per datasheet) |
典型应用
MC33289DWR2 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： MC33289DWR2 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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) |
关键差异点
- Lower on-state resistance per channel （对比 BTS621L1)
- Simple parallel logic control without SPI overhead （对比 BTS720L1)
- Two independent fault flags for granular diagnostics （对比 BTS621L1)
设计说明
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.
合规信息
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.
