- Datasheet Download Datasheet
- Stock & Prices $ Price & Stock for LM4890MM
- Part Number LM4890MM
- Manufacturer Texas Instruments
- Pin Count 8
- Part Category Integrated Circuit
- Package Category Small Outline Packages
- Footprint Name Small Outline Packages - DGK (S-PDSO-G8)
- Released Date Oct 21, 2021
- Last Modified Date Mar 7, 2023 4:10 PM UTC
- Pinout / Pin List Click Here (Member Only)
LM4890MM Details
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Manufacturer Part Number:
LM4890MM
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Pbfree Code:
No
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Part Life Cycle Code:
Obsolete
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Part Package Code:
MSOP
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Package Description:
MSOP-8
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Pin Count:
8
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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:
0
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Bandwidth-Nom:
20 kHz
LM4890MM Frequently Asked Questions (FAQs)
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Texas Instruments provides a recommended PCB layout in the application note SLAA382, 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 10uF for the input and output, and a maximum ESR of 1 ohm. The application note SLAA382 provides more detailed guidance on capacitor selection.
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The maximum power dissipation of the LM4890MM is dependent on the ambient temperature and the thermal resistance of the package. The datasheet provides a thermal resistance of 24°C/W for the QFN package. To calculate the maximum power dissipation, use the formula: Pd = (Tj - Ta) / Rθja, where Tj is the junction temperature, Ta is the ambient temperature, and Rθja is the thermal resistance. The application note SLAA382 provides more detailed guidance on thermal management.
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To ensure stability, follow the recommended PCB layout and component selection guidelines in the application note SLAA382. Additionally, ensure that the input and output capacitors are properly bypassed, and the feedback network is properly designed. The datasheet provides a stability analysis section that can help identify potential stability issues.
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The recommended input voltage range for the LM4890MM is 2.7V to 5.5V. Operating the device outside of this range may affect its performance, stability, and reliability. The datasheet provides more detailed information on the input voltage range and its effects on the device's operation.
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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.