Part Details for LM4991MA by Texas Instruments
Results Overview of LM4991MA by Texas Instruments
- Distributor Offerings: (1 listing)
- Number of FFF Equivalents: (2 replacements)
- Tariff Estimator: (Available) NEW
- Number of Functional Equivalents: (1 option)
- CAD Models: (Available)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
Available Datasheets
| Part # | Manufacturer | Description | Datasheet |
|---|---|---|---|
| LM4991MA/NOPB | Texas Instruments | 3W Audio Power Amplifier with Shutdown Mode 8-SOIC -40 to 85 | |
| LM4991MAX/NOPB | Texas Instruments | 3W Audio Power Amplifier with Shutdown Mode 8-SOIC -40 to 85 |
Price & Stock for LM4991MA
| Part # | Distributor | Description | Stock | Price | Buy | |
|---|---|---|---|---|---|---|
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Chip Stock | 3W AUDIO POWER AMPLIFIER WITH SHUTDOWN MODE Audio Amplifier, 1.5W, 1 Channel(s), 1 Func, PDSO8 | 35000 |
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RFQ |
US Tariff Estimator: LM4991MA by Texas Instruments
Calculations from this tool are estimations only for imports into the United States. Please refer to the distributor or manufacturer and reference official US government sources and authorities to verify any final purchase costs.
Part Details for LM4991MA
LM4991MA CAD Models
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LM4991MA Part Data Attributes
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LM4991MA
Texas Instruments
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Datasheet
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LM4991MA
Texas Instruments
Audio Amplifier, 1.5W, 1 Channel(s), 1 Func, PDSO8
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| Pbfree Code | No | |
| Part Life Cycle Code | Obsolete | |
| Part Package Code | SOIC | |
| Package Description | So-8 | |
| Pin Count | 8 | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.33.00.01 | |
| Bandwidth-Nom | 20 Khz | |
| Consumer IC Type | Audio Amplifier | |
| JESD-30 Code | R-PDSO-G8 | |
| JESD-609 Code | e0 | |
| Length | 4.9 Mm | |
| Moisture Sensitivity Level | 1 | |
| Number of Channels | 1 | |
| Number of Functions | 1 | |
| Number of Terminals | 8 | |
| Operating Temperature-Max | 85 °C | |
| Operating Temperature-Min | -40 °C | |
| Output Power-Nom | 1.5 W | |
| Package Body Material | Plastic/Epoxy | |
| Package Code | SOP | |
| Package Equivalence Code | SOP8,.25 | |
| Package Shape | Rectangular | |
| Package Style | Small Outline | |
| Peak Reflow Temperature (Cel) | 235 | |
| Qualification Status | Not Qualified | |
| Seated Height-Max | 1.753 Mm | |
| Supply Current-Max | 10 Ma | |
| Supply Voltage-Max (Vsup) | 5.5 V | |
| Supply Voltage-Min (Vsup) | 2.2 V | |
| Surface Mount | Yes | |
| Temperature Grade | Industrial | |
| Terminal Finish | Tin Lead | |
| Terminal Form | Gull Wing | |
| Terminal Pitch | 1.27 Mm | |
| Terminal Position | Dual | |
| Time@Peak Reflow Temperature-Max (s) | 20 | |
| Width | 3.9 Mm |
Alternate Parts for LM4991MA
This table gives cross-reference parts and alternative options found for LM4991MA. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of LM4991MA, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| LM4991MA/NOPB | National Semiconductor Corporation | Check for Price | Audio Amplifier, 1.5W, 1 Channel(s), 1 Func, PDSO8 | LM4991MA vs LM4991MA/NOPB |
| LM4991MA | National Semiconductor Corporation | Check for Price | Audio Amplifier, 1.5W, 1 Channel(s), 1 Func, PDSO8 | LM4991MA vs LM4991MA |
LM4991MA Frequently Asked Questions (FAQ)
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A good PCB layout for the LM4991MA involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the traces between the device and the capacitors. TI provides a recommended PCB layout in the datasheet and in application notes.
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To ensure stability, make sure to use the recommended output capacitor value and type, and keep the output capacitor close to the device. Also, ensure that the input capacitor is properly decoupled and the input voltage is well-regulated. Additionally, avoid using long traces or wires between the device and the capacitors.
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The LM4991MA can handle input voltages up to 12V, but it's recommended to keep the input voltage below 10V to ensure optimal performance and to prevent overheating.
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The LM4991MA is rated for operation up to 125°C, but its performance may degrade at high temperatures. It's recommended to derate the output current and ensure good thermal management to prevent overheating.
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The output voltage ripple of the LM4991MA can be calculated using the formula: ΔVout = (Iout * ESL) / (Cout * fsw), where ESL is the equivalent series inductance of the output capacitor, Cout is the output capacitance, and fsw is the switching frequency.