DRV8231 - 35V 3.7A H-Bridge Motor Driver | Texas Instruments
料号： DRV8231DDAR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.29 | $129.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.89 | $890.00 |
DRV8231DDAR 概述
A brushed DC motor driver is a type of motor controller IC that switches power to a DC motor using an H-bridge of transistors, enabling forward, reverse, brake, and coast control. Within the power management IC hierarchy, motor drivers sit between logic-level microcontroller outputs and the power stage, and integrated H-bridge drivers like the DRV8231 combine gate drive, power FETs, charge pump, and protection in a single device.
Key features include integrated current regulation with programmable current limit via the ILIM pin, a charge pump that supports 100% duty cycle operation and full N-channel H-bridge efficiency, and low-voltage logic inputs compatible with 3.3-V and 5-V controllers. Two logic inputs (PWM interface on the DRV8231D variant, PH/EN interface on the DRV8231A variant) control the bridge states, minimizing MCU pin usage and firmware complexity.
Technically, the DRV8231 family offers pin-to-pin scalable RDS(on) and supply voltage options, allowing designers to support various loads and rails with minimal PCB changes. Integrated protection includes undervoltage lockout, overcurrent protection, and thermal shutdown, reducing external component count and board area compared to discrete MOSFET bridge solutions.
Typical applications include brushed DC motor control in printers, small appliances, actuators, robotics, factory automation systems, and consumer electronics, where the compact 2x2 mm WSON-8 package fits space-constrained designs and integrated current regulation protects the motor and PCB traces without an external sense resistor network.
When designing with the DRV8231, set the current limit using the ILIM pin resistor per the datasheet equation and provide a solid power ground plane under the exposed pad, since bridge conduction losses scale with the 600 mOhm typical RDS(on) at higher load currents.
直接替换替代料： DRV8231DDAR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
DRV8231ADSGR
📋 参考替代料（不在目录中）
DRV8251ADSGR
📋 参考替代料（不在目录中）
DRV8251DDAGR
📋 参考替代料（不在目录中）
DRV8870DDAR
📋 参考替代料（不在目录中）
DRV8871DDAR
📋 参考替代料（不在目录中）
A4950ELJTR-T
📋 参考替代料（不在目录中）
DRV8231DDAR 最大额定值与电气特性
| Motor Type | Brushed DC |
| 拓扑 | Single H-bridge |
| Supply Voltage Range | 4.5 V to 33 V (35 V absolute max) |
| Peak Output Current | 3.7 A |
| RDS(on) (HS+LS) | 600 mOhm typical |
| MOSFET Type | Integrated N-channel H-bridge |
| Current Regulation | Integrated, programmable via ILIM pin |
| Control Interface | Two logic inputs (PWM on D variant / PH-EN on A variant) |
| Charge Pump | Integrated, supports 100% duty cycle |
| Logic Input Compatibility | 3.3 V and 5 V logic |
| Protection Features | OCP, UVLO, thermal shutdown |
| 封装 | 8-WSON (DSG) 2x2 mm |
| 安装类型 | Surface Mount |
| 引脚数 | 8 |
| RoHS 状态 | Compliant |
DRV8231DDAR 8-wson (dsg) 2x2 mm 引脚配置指南
DRV8231DDAR（8-wson (dsg) 2x2 mm 封装）的引脚配置。 该功率器件具有栅极、漏极和源极端子。对于无极性封装，请参阅制造商数据手册以了解确切的引脚 1 方向和封装尺寸细节。常见应用包括电源设计、电机驱动和负载开关。
暂无详细引脚数据： DRV8231DDAR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
DRV8231DDAR 适用于 6 应用s: Printer and Office Automation, Small Appliance Actuation, Robotics and Hobby Drives, Industrial Automation Actuators, Battery-Powered Portable Devices, Automotive Body Subsystems.
Printer and Office Automation
Printers use multiple small brushed DC motors for paper feed, carriage, and duplex mechanisms, all supplied from a 24-V rail. The DRV8231 fits these nodes with its 4.5-V to 33-V operating range and 3.7-A peak capability for paper-jam stall events. Integrated current regulation via the ILIM pin caps stall current without a shunt resistor, and the 2x2 mm WSON-8 package fits dense printer PCAs. The two-input control interface connects directly to 3.3-V printer SoC GPIOs, minimizing component count per motor axis.
推荐
Small Appliance Actuation
Appliances such as coffee machines, dispensers, and locks use brushed DC actuators on 12-V or 24-V rails. The DRV8231 drives these loads with integrated OCP, UVLO, and thermal shutdown, replacing discrete MOSFET bridges and reducing BOM cost. Its charge pump permits 100% duty cycle for continuous actuation, while the programmable current limit protects plastic gear trains during stalls. With only 600 mOhm typical RDS(on), conduction losses remain acceptable for intermittent-duty actuator profiles in thermally constrained enclosures.
推荐
Robotics and Hobby Drives
Compact robots require small, protected brushed DC drive channels for wheels, grippers, and pumps. The DRV8231 provides bidirectional control from two logic pins with fast PWM support for speed control, and its integrated current regulation protects against stall currents when the robot is blocked. The 2x2 mm WSON-8 footprint suits small drive PCBs, and the pin-to-pin scalable DRV8231/DRV8251 family lets designers raise current capability later without changing the PCB layout, an advantage for product lineups sharing one board.
推荐
Industrial Automation Actuators
In 24-V factory systems, the DRV8231 drives dampers, valves, and linear actuators. Its 33-V operating ceiling withstands typical industrial supply tolerances, and the integrated current limit handles actuator end-stop stalls without external protection circuitry. UVLO ensures clean behavior during brownouts, and thermal shutdown protects against repeated stall events during commissioning. Placement after a 24-V buck converter gives a compact, fully protected actuator channel suitable for modular I/O cards and distributed motor control nodes.
推荐
Battery-Powered Portable Devices
Portable battery products such as smart locks, trimmers, and medical dosing devices benefit from the DRV8231 low standby behavior and UVLO that prevents misdriving at low battery voltage. The 2x2 mm package conserves board area, and integrated current regulation replaces external sense resistors, saving cost and space. Operating down to 4.5 V, it covers single-cell-boosted or multi-cell NiMH/Li-ion stacks; designers should size the ILIM limit to protect small gear motors while preserving startup torque under cold conditions.
推荐
Automotive Body Subsystems
Non-safety automotive actuators such as mirror adjust, flap control, and small pump drives run from 12-V battery rails with load-dump transients. While the standard DRV8231 targets industrial/consumer use, designers evaluating this footprint for automotive should consider AEC-Q100 qualified TI equivalents. The DRV8231 integrated current regulation and protection behavior serve as the reference design pattern; two-pin control and 100% duty cycle support suit simple position-based body actuators driven from a CAN-connected MCU.
推荐
推荐产品汇总
工程参考数据： DRV8231DDAR ——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 | DRV8231ADSGR | DRV8251ADSGR | A4950ELJTR-T |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Allegro MicroSystems |
| Package | 8-WSON (DSG) 2x2 mm | 8-WSON (DSG) 2x2 mm - same | 8-WSON (DSG) 2x2 mm - same | 8-pin eSOIC - different, not drop-in |
| Supply Voltage Range | 4.5 V to 33 V | 4.5 V to 33 V | 4.5 V to 33 V | 8 V to 40 V |
| Peak Output Current | 3.7 A | 3.7 A | ~4.1 A class | ~3.5 A |
| Control Interface | Dual PWM inputs (D variant) | PH/EN interface | PH/EN (A variant) | IN/IN PWM control |
| Integrated Current Regulation | Yes (ILIM pin) | Yes (ILIM pin) | Yes (ILIM pin) | Yes (internal fixed limit) |
关键差异点
- Fully integrated N-channel H-bridge with charge pump （对比 DRV8870DDAR)
- Programmable current limit without external shunt （对比 A4950ELJTR-T)
- Pin-to-pin scalable family （对比 DRV8251ADSGR)
设计说明
The WSON-8 (DSG) 2x2 mm package dissipates bridge conduction heat through its exposed pad. Provide a solid copper pour of at least 25 mm squared connected by an array of thermal vias to inner ground planes. Conduction loss equals I-squared times 600 mOhm total RDS(on); at 2 A continuous this is 2.4 W, which exceeds what a minimal footprint can handle. Follow TI datasheet layout section for via pattern under the exposed pad.
Set the current limit with the ILIM pin resistor per the datasheet equation so stall current is clamped below the motor and connector rating. Place a low-ESR ceramic bulk capacitor (10 uF or more per datasheet recommendation) close to VCC to absorb PWM current ripple; on long motor leads add a small electrolytic because lead inductance can cause supply transients near the 35 V absolute maximum on 24-V systems.
Confirm the interface variant before layout: DRV8231D uses dual PWM inputs while DRV8231A uses PH/EN. Mixing variants on the same PCB without checking the firmware mapping causes reverse or brake behavior. Also avoid floating inputs - tie unused control logic per the datasheet, and account for UVLO behavior so the motor does not glitch during supply ramp.
合规信息
RoHS compliance per TI product page and DigiKey listing. AEC-Q100 qualification not indicated for the standard DRV8231; check TI quality summary for the specific ordering part number.
