LMD18200T/NOPB - 3A 55V H-Bridge Motor Driver | Texas Instruments
料号： LMD18200T/NOPB ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $11.2 | $11.20 |
| 10 | $10.05 | $100.50 |
| 100 | $8.92 | $892.00 |
| 500 | $7.78 | $3,890.00 |
| 1,000 | $6.85 | $6,850.00 |
LMD18200T/NOPB 概述
An H-bridge motor driver is a four-switch power stage that allows a DC motor or stepper winding to be driven in both directions from a single supply rail. The H-bridge sits within the broader hierarchy of motor driver ICs -> motion controllers -> power management ICs -> semiconductor ICs, and is a foundational building block for brushed DC and bipolar stepper motion systems. By integrating both the high-side and low-side switches, plus direction and PWM control logic, an H-bridge IC eliminates the discrete MOSFET design effort for sub-50V applications.
Key features of the LMD18200T/NOPB include continuous 3A output current with 6A peak capability, a wide 12V to 55V supply range, built-in shoot-through protection, thermal shutdown, and a low-loss current-sense output that eliminates the need for a discrete sense resistor. The Bi-CMOS/DMOS process combines bipolar/CMOS logic with DMOS power transistors on a single die, achieving typical R_DS(on) values in the sub-0.3-ohm per switch region. The TO-220-11 package provides a thermally efficient through-hole footprint with formed leads optimized for vertical mount with an external heatsink.
The device accepts TTL/CMOS-compatible DIRECTION and PWM inputs and integrates anti-shoot-through dead-time control, so external microcontroller logic is sufficient for full bidirectional speed and position control. Internal charge-pump-driven high-side switches allow 100% duty-cycle operation - critical for accurate low-speed DC motor control where PWM-frequency ripple cannot be tolerated on the output stage.
Typical applications include brushed DC servo motor drives, bipolar stepper motor amplifiers (one LMD18200 per winding), robotic actuator drivers, valve and solenoid controllers, and industrial automation motion subsystems. The device is well suited to industrial 24V and 36V bus systems where its 55V rating provides sufficient transient margin.
When designing with the LMD18200T/NOPB, plan for an external heatsink sized for continuous worst-case dissipation: at 3A and a 24V supply, internal conduction losses alone can exceed 4W. Place a 1uF or larger bulk decoupling capacitor close to the supply pins and add a 0.1uF ceramic high-frequency bypass to suppress the charge-pump switching noise that otherwise couples back to the motor terminals.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the LMD18200T/NOPB that are not present in the manufacturer datasheet alone, and that are tailored to help engineers select, source, and qualify the part quickly.
直接替换替代料： LMD18200T/NOPB ——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：
LMD18200T
✅ 直接替换📋 参考替代料（不在目录中）
LMD18200T/LF14
✅ 直接替换📋 参考替代料（不在目录中）
LMD18201T/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
LMD18200T/NOPB 最大额定值与电气特性
| Motor Driver Type | H-Bridge, Bi-CMOS/DMOS, Parallel Interface |
| 输出数量 | 1 H-Bridge (2 half-bridge outputs) |
| Continuous Output Current | 3 A |
| Peak Output Current | 6 A |
| Supply Voltage Range | 12 V to 55 V |
| Logic Input Compatibility | TTL/CMOS (DIRECTION, BRAKE, PWM) |
| Current Sense Output | Integrated, low-loss (no external sense resistor required) |
| Built-in Protection | Thermal shutdown, anti-shoot-through, undervoltage lockout |
| 工作温度 | -40 C to +125 C |
| 封装 | TO-220-11 (Formed Leads, Vertical Mount) |
| 安装类型 | Through-Hole, requires external heatsink |
| RoHS 状态 | Compliant (NOPB suffix indicates lead-free, RoHS-compliant) |
LMD18200T/NOPB 引脚配置
| 引脚 1 | BOOTSTRAP 1 — Bootstrap capacitor for half-bridge 1 high-side driver |
| 引脚 2 | OUTPUT 1 — H-bridge output 1 (to motor terminal A) |
| 引脚 3 | GROUND — Power and signal ground |
| 引脚 4 | GROUND — Power and signal ground |
| 引脚 5 | DIRECTION — Logic input - direction control (TTL/CMOS) |
| 引脚 6 | BRAKE — Logic input - active-low brake (TTL/CMOS) |
| 引脚 7 | PWM — Logic input - PWM input for speed control |
| 引脚 8 | CURRENT SENSE OUT — Analog current-sense output (no external shunt required) |
| 引脚 9 | THERMAL FLAG — Thermal warning / shutdown indicator |
| 引脚 10 | OUTPUT 2 — H-bridge output 2 (to motor terminal B) |
| 引脚 11 | BOOTSTRAP 2 / VS — Bootstrap capacitor for half-bridge 2 high-side driver / supply |
LMD18200T/NOPB 安全工作区 (DC, single H-bridge)
典型应用
LMD18200T/NOPB 适用于 6 应用s: Brushed DC Servo Motor Drive, Bipolar Stepper Motor Amplifier (One H-Bridge per Phase), Robotic Actuator and Solenoid Driver, Industrial 24V/36V Automation Motion Subsystem, Automotive and Marine Accessory Motor Control, Valve and Damper Actuator Control.
Brushed DC Servo Motor Drive
The LMD18200T/NOPB drives a single brushed DC servo motor with 3 A continuous and 6 A peak current from a 12-55 V supply. Its 100% duty-cycle high-side drive eliminates the PWM-ripple-induced torque ripple that plagues bootstrap-only designs, which is critical for low-speed servo accuracy. The integrated current sense (pin 8) feeds back to a current loop without an external shunt resistor, simplifying the analog signal chain. Place 1uF bulk plus 0.1uF ceramic bypass close to the supply pins, and use a clip-on heatsink sized for the worst-case I2R loss. The TTL-compatible DIRECTION and PWM inputs connect directly to MCU or motion-controller logic.
推荐
Bipolar Stepper Motor Amplifier (One H-Bridge per Phase)
Two LMD18200T/NOPB ICs drive one bipolar stepper motor - one H-bridge per phase winding. The 12-55 V supply range covers industrial 24 V and 36 V stepper rails, with 55 V of back-EMF headroom for high-speed deceleration. The device's 3 A continuous current per phase handles NEMA 17 and small NEMA 23 motors directly. Apply microstepping waveforms via the PWM input from a DSP or FPGA. Anti-shoot-through protection prevents cross-conduction during direction changes. The TO-220-11 vertical-mount package makes it straightforward to attach one clip-on heatsink per phase on a compact stepper amplifier board.
推荐
Robotic Actuator and Solenoid Driver
The LMD18200T/NOPB provides bidirectional current control for DC solenoids, latching valves, and robotic linear actuators. The H-bridge topology energizes the actuator in one direction with DIRECTION high, and reverses polarity with DIRECTION low - eliminating the discrete MOSFET + relay designs traditionally used. The integrated current sense enables closed-loop force or position control, while the 55 V supply rating tolerates long cable runs where inductance spikes are common. Built-in thermal shutdown protects against stalled-rotor faults, and the TTL logic interfaces directly to industrial 24 V PLC logic via standard level shifters. A 1uF bulk capacitor per IC is recommended to handle the inrush current of solenoid engagement.
推荐
Industrial 24V/36V Automation Motion Subsystem
The LMD18200T/NOPB fits the 24V and 36V industrial bus rails used in factory automation, with 55 V of headroom for load-dump transients on long cable runs. Its bipolar/CMOS logic interface operates with 5V TTL or 3.3V CMOS signals when level-shifted, connecting directly to industrial PLC and motion-controller digital outputs. The wide supply range and H-bridge integration remove the need for an external gate driver, charge pump, or sense resistor - reducing BOM count and PCB area. Conduction loss at 3 A is the dominant thermal load, so size a TO-220 clip-on heatsink to keep the junction below 125 C at the maximum ambient. The /NOPB lead-free plating satisfies RoHS and REACH compliance for European and global industrial markets.
推荐
Automotive and Marine Accessory Motor Control
The LMD18200T/NOPB is widely used in 12 V and 24 V automotive accessory applications - including electric window lifts, seat adjusters, mirror actuators, and marine trim-tab drives. Its 55 V supply rating tolerates load-dump transients up to 40 V that occur during alternator disconnect on 12 V systems, and provides even more margin on 24 V truck and bus systems. The H-bridge output drives the motor in both directions from a single supply rail, and the TTL logic interfaces directly to body-control modules. For AEC-Q100 qualified applications, the LMD18200T does not have a Q1 suffix; verify with the manufacturer whether the standard part is acceptable for your automotive environment.
推荐
Valve and Damper Actuator Control
HVAC damper actuators, process-control valve positioners, and pneumatic proportional valves benefit from the LMD18200T/NOPB's bidirectional drive and integrated current sense. The H-bridge modulates valve position via PWM duty cycle through a DC motor or voice-coil actuator, while the current-sense output provides torque feedback for stall detection. The 12-55 V supply range matches the 24 VAC rectified supply and 24 VDC building-automation rails commonly used in HVAC equipment. The TO-220 vertical-mount package and clip-on heatsink make it straightforward to assemble into the cramped enclosure of a damper actuator. The TTL/CMOS logic interface integrates with standard building-automation controllers.
推荐
推荐产品汇总
工程参考数据： LMD18200T/NOPB ——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 | LMD18200T | LMD18200T/LF14 | LMD18201T/NOPB |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | TO-220-11 (Formed Leads, vertical) | TO-220-11 (Formed Leads, vertical) - same | TO-220-11 (Right-Angle Formed Leads) | TO-220-11 (Formed Leads, vertical) - same |
| Continuous Output Current | 3 A | 3 A | 3 A | 3 A |
| Peak Output Current | 6 A | 6 A | 6 A | 6 A |
| Supply Voltage Range | 12 V to 55 V | 12 V to 55 V | 12 V to 55 V | 12 V to 55 V |
| Current Sense Output | Yes (integrated, low-loss) | Yes (integrated, low-loss) | Yes (integrated, low-loss) | No (omitted on pin 8) |
| Lead Finish | Lead-free, RoHS (NOPB) | Lead-bearing (non-RoHS, legacy) | Lead-free, RoHS (LF14) | Lead-free, RoHS (NOPB) |
| Pin Forming / Mounting | Formed Leads, vertical (external heatsink) | Formed Leads, vertical (same) | Right-Angle Formed Leads, horizontal (PCB heatsink) | Formed Leads, vertical (same) |
关键差异点
- Same TO-220-11 footprint but with right-angle pin forming for horizontal PCB mounting （对比 LMD18200T/LF14)
- Includes integrated current sense output （对比 LMD18201T/NOPB)
- Lead-free, RoHS-compliant plating （对比 LMD18200T (non-NOPB))
设计说明
Estimated: at 24 V supply, 3 A continuous load, and approximately 0.3 ohm per-side R_DS(on), conduction loss is roughly 2.7 W per switch side. The TO-220 package alone cannot dissipate this; an external clip-on or bolt-on heatsink is required, sized so the junction temperature stays below 125 C at worst-case ambient. Apply thermal interface compound between the tab and the heatsink; the tab is internally connected to the substrate and may be at ground potential.
Place a 1uF (or larger) bulk decoupling capacitor as close as possible to the supply pins to handle motor inrush current. Add a 0.1uF ceramic high-frequency bypass capacitor in parallel to suppress the charge-pump switching noise that otherwise couples back to the motor terminals. Keep the bootstrap capacitor traces short - long traces cause high-side drive voltage droop and increased R_DS(on) on the high-side FETs. For the LMD18200T/LF14 horizontal variant, use a large copper pour on the PCB beneath the package to act as a heatsink.
Do not leave the CURRENT SENSE OUT (pin 8) floating on the LMD18200T - tie it to ground through a resistor even if unused, to prevent noise injection. Do not exceed 55 V on the supply pin, including transient spikes from motor back-EMF. Do not drive the DIRECTION and BRAKE inputs simultaneously high in conflicting states - the internal anti-shoot-through protection handles valid combinations, but invalid logic combinations may cause undefined behavior. Always verify that the LMD18201 substitution is acceptable if current sensing is not used.
合规信息
RoHS compliant per /NOPB suffix (TI lead-free, lead-free plating). REACH compliance assumed for standard TI semiconductor products. The LMD18200T family is not AEC-Q100 qualified; verify with TI for automotive-grade availability. Heisener lists 15,180 pieces in stock as of 2026-10-08.
