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Name: LMD18400N
Brand: Texas Instruments
SKU: LMD18400N
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments LMD18400N

Part No.:: LMD18400N

Manufacturer:: Texas Instruments

Package:: 20-DIP (0.300, 7.62mm)

Datasheet:: LMD18400N.pdf

Description:: IC GATE DRVR HIGH-SIDE 20DIP

In Stock:: 3253

Quantity:: Add To Cart

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LMD18400N Specifications

Packaging:
Tube
Series:
-
ProductStatus:
Obsolete
DrivenConfiguration:
High-Side
ChannelType:
Independent
NumberofDrivers:
4
GateType:
N-Channel MOSFET
Voltage-Supply:
7V ~ 28V
LogicVoltage-VILVIH:
0.8V, 2V
Current-PeakOutput(SourceSink):
3A, 3A
InputType:
Non-Inverting
HighSideVoltage-Max(Bootstrap):
-
Rise/FallTime(Typ):
-
OperatingTemperature:
-25°C ~ 150°C (TJ)
MountingType:
Through Hole

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LMD18400N information

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LMD18400N Typical application Circuitry

LMD18400N is a high-performance H-Bridge motor driver chip designed for driving DC motors with up to 10A peak current. It offers efficient motor control and is commonly used in robotics, automotive applications, and industrial automation systems.

Application Scenario:

In robotics applications, LMD18400N can be utilized to control the movement of robotic arms or mobile robots, providing precise and reliable motor control.

Circuit Design:

To design a motor control circuit using LMD18400N, follow these steps:

1. Motor Connection:

Connect the DC motor to the output pins of LMD18400N. The motor's positive terminal should be connected to pin 3 (OUT1) and the negative terminal to pin 6 (OUT2).

2. Power Supply:

Provide power to the motor driver and the motor itself. Connect a suitable power supply voltage (usually between 8V to 40V) to pin 4 (VS) and pin 5 (GND) of LMD18400N. Ensure proper decoupling capacitors are placed across the power supply terminals to minimize noise.

3. Motor Control:

Control the direction and speed of the motor using the input pins of LMD18400N. Connect the PWM signal for speed control to pin 1 (PWM) and use pins 2 (IN1) and 7 (IN2) for controlling the motor direction. For example, applying a logic HIGH to IN1 and a logic LOW to IN2 will rotate the motor in one direction, while reversing the logic levels will change the direction.

4. Current Sensing:

Implement current sensing for motor protection and feedback. Connect a current sensing resistor between pin 8 (CS) and ground, and measure the voltage across it to monitor the motor current. Use an operational amplifier to amplify the voltage signal if necessary.

5. Thermal Management:

Ensure proper thermal management to prevent overheating of LMD18400N. Connect a heatsink to the exposed metal pad underneath the chip and use thermal compound for efficient heat dissipation.

Considerations:

When designing the circuit, it's essential to consider:

- Motor Specifications: Ensure that the motor's voltage and current ratings are compatible with LMD18400N and the power supply.

- Heat Dissipation: Calculate the power dissipation in LMD18400N based on the operating conditions and select an appropriate heatsink to keep the chip within its safe operating temperature range.

- Protection Circuitry: Include protection features such as overcurrent protection and reverse polarity protection to safeguard the motor driver and connected components.

- Signal Integrity: Keep signal traces short and use proper grounding techniques to maintain signal integrity and minimize noise interference.

- Testing and Calibration: Thoroughly test the motor control circuit under various load conditions to ensure reliable and precise motor control performance.

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6. What is the process for return or replacement of LMD18400N?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the LMD18400N we delivered, we will accept the replacement or return of the LMD18400N only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of LMD18400N.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations