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- Part Number LM4873MTEX/NOPB
- Manufacturer Texas Instruments
- Pin Count 21
- Part Category Integrated Circuit
- Package Category Small Outline Packages
- Footprint Name Small Outline Packages - PWP0020A
- Released Date Feb 28, 2022
- Last Modified Date Mar 7, 2023 4:10 PM UTC
- Pinout / Pin List Click Here (Member Only)
LM4873MTEX/NOPB Details
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Manufacturer Part Number:
LM4873MTEX/NOPB
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Brand Name:
Texas Instruments
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Pbfree Code:
Yes
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Rohs Code:
Yes
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Part Life Cycle Code:
Active
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Part Package Code:
TSSOP
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Pin Count:
20
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ECCN Code:
EAR99
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HTS Code:
8542.33.00.01
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Manufacturer:
Texas Instruments
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YTEOL:
15
LM4873MTEX/NOPB Frequently Asked Questions (FAQs)
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Texas Instruments provides a recommended PCB layout in the application note SLAA303, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize electromagnetic interference (EMI).
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The choice of input and output capacitors depends on the specific application requirements, such as frequency response, ripple rejection, and ESR. TI recommends using low-ESR capacitors with a minimum capacitance of 2.2uF for the input and output, and a maximum ESR of 1 ohm. Additionally, X7R or X5R dielectric capacitors are recommended for their stability over temperature and voltage.
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The maximum power dissipation of the LM4873 is dependent on the package type and thermal resistance. For the MTEX package, the maximum power dissipation is approximately 2.5W. To calculate the power dissipation, use the formula: Pd = (Vin - Vout) x Iout, where Vin is the input voltage, Vout is the output voltage, and Iout is the output current. Ensure that the calculated power dissipation is within the recommended maximum to prevent overheating and ensure reliable operation.
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The LM4873 is rated for operation up to 85°C, but it can be used in high-temperature environments with some limitations. The device's maximum junction temperature is 150°C, and the maximum operating temperature is 125°C. However, the device's performance and reliability may degrade at high temperatures, and the output voltage may droop. Ensure that the device is properly heatsinked and that the operating temperature is within the recommended range to ensure reliable operation.
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To protect the LM4873 from input voltage surges and transients, use a transient voltage suppressor (TVS) diode or a voltage clamp circuit at the input. Additionally, ensure that the input capacitor is rated for the maximum input voltage and has a low ESR to minimize voltage ringing. TI also recommends using a fuse or a current-limiting resistor in series with the input to prevent overcurrent conditions.
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LM4873MTEX/NOPB Overview
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.