- Datasheet Download Datasheet
- Stock & Prices $ Price & Stock for LM4990MM
- Part Number LM4990MM
- 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 Jul 25, 2021
- Last Modified Date Feb 24, 2026 9:30 AM UTC
- Pinout / Pin List Click Here (Member Only)
LM4990MM Details
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Manufacturer Part Number:
LM4990MM
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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
LM4990MM Frequently Asked Questions (FAQs)
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Texas Instruments provides a recommended PCB layout in the datasheet, but it's essential to follow good PCB design practices, such as keeping the input and output traces short and separate, using a solid ground plane, and placing decoupling capacitors close to the device. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
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To ensure stability, it's crucial to follow the recommended component values and PCB layout. Additionally, make sure to use a sufficient output capacitor with a low ESR (Equivalent Series Resistance) and a high-quality input capacitor. It's also recommended to add a small resistor (e.g., 10 ohms) in series with the output capacitor to prevent oscillation.
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Although the datasheet specifies a maximum input voltage of 12V, it's essential to consider the maximum voltage rating of the internal components and the device's thermal limitations. As a general rule, it's recommended to keep the input voltage below 10V to ensure reliable operation and prevent overheating.
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The LM4990MM is rated for operation up to 85°C, but it's essential to consider the device's thermal limitations and the maximum junction temperature (Tj) of 150°C. Make sure to provide adequate heat sinking and ensure that the device is not exposed to temperatures above the recommended rating.
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To troubleshoot issues with the LM4990MM, start by verifying the input voltage, output voltage, and current consumption. Check the PCB layout and component values to ensure they match the recommended values. Use an oscilloscope to check for oscillation or ringing on the output. If the issue persists, try replacing the device or consulting the datasheet and application notes for further guidance.
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LM4990MM 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.