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Texas Instruments LMD18200T/LF14
- Part No.:
- LMD18200T/LF14
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- TO-220-11 Formed Leads
- Datasheet:
-
LMD18200T/LF14.pdf
- Description:
- IC MTR DRV BIPLR 12-55V TO220-11
- Quantity:
- Payment:
- Shipping:
Inventory:3,688
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Product details
Overview
LMD18200T/LF14 from Texas Instruments is a monolithic 3A, 55V H-bridge motor driver IC built with bipolar-CMOS-DMOS technology. It delivers up to 6A peak output current, features integrated clamp diodes and internal charge pump for high-side gate drive, and operates across −40°C to +125°C junction temperature. It is used in brushed DC motor control for industrial automation robots and numerically controlled machinery.
For engineers reviewing the LMD18200T/LF14 datasheet, LMD18200T/LF14 pinout, LMD18200T/LF14 application, or LMD18200T/LF14 equivalent, key selection criteria include continuous current rating (3A), thermal warning flag at 145°C, TTL/CMOS-compatible logic inputs, no shoot-through protection, and bootstrap-capable 11-pin TO-220 package.
Technical Context
The LMD18200T/LF14 integrates dual half-H-bridge power stages with independent bootstrap inputs (Pins 1 & 11) enabling high-side NMOS switching up to 55V. Its internal charge pump operates at ~300 kHz and supports external 10 nF bootstrap capacitors for <100 ns turn-on times at up to 500 kHz PWM frequency.
It implements real-time current sensing via a 377 µA/A sourcing output (Pin 8), thermal monitoring with active-low flag at 145°C (Pin 9), and undervoltage lockout below 9V. Protection includes shorted-load shutdown (~10 A threshold), thermal shutdown at 170°C, and reverse-recovery-optimized internal clamp diodes (70 ns for sourcing, 100 ns for sinking paths).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Output Current | 3A - Sustained motor drive without thermal shutdown under proper heatsinking |
| Peak Output Current | 6A - Short-duration (200 ms) surge capability for motor startup or stall recovery |
| RDS(ON) per Switch | 0.33 Ω typ at 3A - Low conduction loss enabling >85% efficiency at mid-load conditions |
| Supply Voltage Range | +12 V to +55 V - Supports 24 V and 48 V industrial bus systems with 60 V absolute max rating |
| Thermal Warning Threshold | 145°C junction - Open-collector flag (Pin 9) signals early thermal stress before shutdown |
| Logic Input Compatibility | TTL/CMOS - Accepts 0.8 V low / 2 V high thresholds, simplifying interface with microcontrollers |
| Current Sense Sensitivity | 377 µA/A - Enables accurate closed-loop current regulation using standard op-amp circuits |
Pinout & Package
Package: 11-lead TO-220 (NDJ0011B), with exposed tab internally connected to Pin 7 (GROUND); requires mechanical mounting to heatsink for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1, BOOTSTRAP 1 | High-side gate drive capacitor node for half-bridge 1 | Connects to 10 nF capacitor between Pins 1–2; enables NMOS high-side switching above VS |
| Pin 2, OUTPUT 1 | Half-bridge 1 output terminal | Drives one side of motor load; pairs with Pin 10 for full H-bridge operation |
| Pin 3, DIRECTION | Motor rotation direction control input | Logic level selects sourcing/sinking configuration of outputs for bidirectional drive |
| Pin 4, BRAKE | Mechanical brake activation input | Shorts motor terminals when asserted with PWM high; enables rapid deceleration |
| Pin 5, PWM | Pulse-width modulation input | Controls torque/speed magnitude; used with Pin 3 for sign/magnitude or locked anti-phase modes |
| Pin 6, VS | Main power supply input | Accepts 12–55 V; requires ≥1 µF ceramic bypass near pin; heat-sink copper recommended above 30 V |
| Pin 7, GROUND | Power and signal reference | Internally tied to metal tab; must be low-inductance connection to PCB ground plane |
| Pin 8, CURRENT SENSE | Analog current feedback output | Sourcing 377 µA per ampere sensed only on upper (sourcing) outputs; ignores freewheeling current |
| Pin 9, THERMAL FLAG | Open-collector thermal warning output | Active-low at 145°C; wired-OR capable; drives MCU interrupt or system supervisor |
| Pin 10, OUTPUT 2 | Half-bridge 2 output terminal | Completes H-bridge with Pin 2; forms motor connection across Pins 2 and 10 |
| Pin 11, BOOTSTRAP 2 | High-side gate drive capacitor node for half-bridge 2 | Connects to 10 nF capacitor between Pins 10–11; mirrors Pin 1 functionality for second leg |
Key Features
| Feature | Design Value |
|---|---|
| No shoot-through current | Hardware-enforced dead-time prevents simultaneous high-side/low-side conduction, eliminating destructive cross-conduction |
| Integrated clamp diodes | On-chip DMOS body diodes with 70 ns (sourcing) / 100 ns (sinking) reverse recovery enable safe inductive flyback handling |
| Internal charge pump + bootstrap support | Enables efficient high-side NMOS drive without external high-voltage gate drivers; supports up to 500 kHz PWM |
| Thermal warning + shutdown | Two-stage thermal protection: flag at 145°C allows preemptive derating; hard shutdown at 170°C prevents damage |
| Shorted-load protection | Current-limit circuit triggers at ~10 A and cycles device on/off until fault clears-avoids latch-up during winding shorts |
Applications
| Industrial Robot Joint Actuation | Numerical Control (NC) Machine Axis Drive |
|---|---|
Use Scenario: Precise bidirectional torque control for articulated robot joints requiring smooth acceleration/deceleration and stall recovery. IC Role / Device Role / Timing Role: H-bridge power stage executing sign/magnitude PWM commands from motion controller; provides current feedback for torque loop closure. Use Value: Integrated current sense (377 µA/A) and thermal flag enable real-time torque limiting and thermal margin monitoring without external sensors. |
Use Scenario: Driving stepper or DC servo motors in CNC mills, lathes, or 3D printers where position accuracy depends on consistent current delivery and thermal stability. IC Role / Device Role / Timing Role: Motor driver executing fixed off-time or locked anti-phase PWM; handles recirculating currents via internal clamp diodes. Use Value: 0.33 Ω RDS(ON) minimizes I²R losses during sustained axis movement; 55 V rating supports 48 V industrial supplies. |
| Factory Automation Conveyor Control | Computer Printer/Plotter Paper Feed Mechanism |
Use Scenario: Continuous-duty DC motor driving conveyor belts with variable speed and emergency braking requirements. IC Role / Device Role / Timing Role: Bidirectional H-bridge implementing brake (Pin 4) and direction (Pin 3) logic for reversible transport; monitors load current for jam detection. Use Value: Brake function enables immediate motor shorting for mechanical stopping; current sense output feeds PLC for predictive maintenance alerts. |
Use Scenario: Compact, low-noise paper feed and carriage drive in office printers and plotters operating from 24 V rails. IC Role / Device Role / Timing Role: Low-jitter H-bridge (ton = 80–100 ns) delivering precise microstepping-compatible waveforms; uses thermal flag for duty-cycle throttling. Use Value: TO-220 package allows direct heatsinking in space-constrained enclosures; TTL compatibility eliminates level-shifter components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar H-bridge motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV8412DWP | 2 × 5.5A peak, 45V, SPI-configurable, integrated current sense amplifier; no thermal flag output | Requires external MCU for fault interpretation; better suited for systems needing programmable current limits and diagnostics | Select DRV8412DWP when digital configurability and higher peak current are prioritized over analog simplicity and thermal flag signaling |
| VNH7040AS | 41V, 14A peak, automotive-grade (AEC-Q100), integrated current sense and fault reporting via SPI; no bootstrap pins | Designed for 12 V automotive loads; lacks external bootstrap flexibility for high-frequency 48 V industrial use | Select VNH7040AS for automotive HVAC or seat control; avoid for 48 V factory automation where bootstrap-based high-side drive is required |
Compared with LMD18200T/LF14, DRV8412DWP offers higher current and digital control but removes the standalone thermal flag and bootstrap design freedom, while VNH7040AS provides automotive robustness and higher peak current but sacrifices the analog-friendly, externally configurable bootstrap architecture essential for flexible 24–48 V industrial motor drives.
Availability
LMD18200T/LF14 is available at Aetrix Electronics and suitable for industrial robot joint actuation, numerical control machine axis drive, and factory automation conveyor control requiring stable component supply across extended product lifecycles.
Supply support for LMD18200T/LF14 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and connectivity technologies with over 50 years of power management innovation.
The LMD18200T/LF14 belongs to TI's legacy motion control portfolio, designed specifically for cost-sensitive, high-reliability brushed DC motor applications in industrial automation and precision machinery.
FAQ
What is the maximum continuous output current rating for the LMD18200T/LF14?
The LMD18200T/LF14 is rated for 3A continuous output current under specified thermal conditions (TA ≤ 25°C with adequate heatsinking). This rating assumes proper PCB copper area for thermal dissipation and operation within the −40°C to +125°C junction temperature range. Exceeding this current without enhanced cooling will trigger thermal shutdown at 170°C.
Does the LMD18200T/LF14 support both sign/magnitude and locked anti-phase PWM control modes?
Yes, the LMD18200T/LF14 supports both sign/magnitude and locked anti-phase PWM control. In sign/magnitude mode, Pin 3 (DIRECTION) receives the sign signal and Pin 5 (PWM) receives the magnitude signal. In locked anti-phase mode, Pin 3 is driven by the PWM signal and Pin 5 is held high. The logic truth table in the LMD18200T/LF14 datasheet defines all valid input combinations.
How does the current sense output (Pin 8) of the LMD18200T/LF14 function, and what is its sensitivity?
The LMD18200T/LF14 current sense output (Pin 8) is a sourcing current source with a nominal sensitivity of 377 µA per ampere of output current. It senses only the upper (sourcing) half-bridge legs-not freewheeling current-and requires an external resistor to ground to convert to voltage. For 5 V full-scale, a 13.26 kΩ resistor is recommended to limit voltage at Pin 8 to ≤5 V at 3A load.
What is the purpose of the thermal warning flag (Pin 9) on the LMD18200T/LF14, and at what temperature does it activate?
The thermal warning flag (Pin 9) on the LMD18200T/LF14 is an open-collector output that goes active-low when the junction temperature reaches 145°C. It provides early thermal stress indication before thermal shutdown occurs at 170°C, allowing the system controller to reduce load current or initiate cooling measures. The flag remains active until temperature drops below hysteresis threshold (~135°C).
Can the LMD18200T/LF14 drive a 48 V DC motor, and what supply voltage limitations apply?
Yes, the LMD18200T/LF14 can drive a 48 V DC motor: its operating supply voltage range is +12 V to +55 V, with an absolute maximum rating of 60 V on Pin 6 (VS). When operating near 48 V, TI recommends adding a P6KE62A TransZorb suppressor from VS to ground and ensuring ≥100 µF bulk capacitance per amp of load current to manage inductive kickback and supply transients.
LMD18200T/LF14 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-220-11 Formed Leads
- Packaging:
- Tube
- Product Status:
- Active
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Low Side (2)
- Interface:
- Parallel
- Technology:
- Bi-CMOS, DMOS
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- 3A
- Voltage - Supply:
- 12V ~ 55V
- Voltage - Load:
- 12V ~ 55V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-11
LMD18200T/LF14 FAQ
1.How can I place an order for LMD18200T/LF14 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMD18200T/LF14 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LMD18200T/LF14 reliable?
The price and inventory of LMD18200T/LF14 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMD18200T/LF14 is usually 5 days.
3.What payment methods are accepted for LMD18200T/LF14?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMD18200T/LF14 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMD18200T/LF14?
LMD18200T/LF14 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMD18200T/LF14 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LMD18200T/LF14?
For technical support, including LMD18200T/LF14 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMD18200T/LF14 requirements.
6.How does Aetrix verify that LMD18200T/LF14 is sourced from the original manufacturer or authorized distributors?
All LMD18200T/LF14 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LMD18200T/LF14 meets industry standards.
7.What is the process for return or replacement of LMD18200T/LF14?
All LMD18200T/LF14 units undergo pre-shipment inspection (PSI). If there is an issue with LMD18200T/LF14, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LMD18200T/LF14 part is unused and in its original packaging.
Return procedure for LMD18200T/LF14:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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