Part Details for A3949SLB by Allegro MicroSystems LLC
Results Overview of A3949SLB by Allegro MicroSystems LLC
- Distributor Offerings: (0 listings)
- Number of FFF Equivalents: (0 replacements)
- Tariff Estimator: (Available) NEW
- Number of Functional Equivalents: (4 options)
- CAD Models: (Request Part)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
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A3949SLB Information
A3949SLB by Allegro MicroSystems LLC is a Motion Control Electronic.
Motion Control Electronics are under the broader part category of Signal Circuits.
A signal is an electronic means of transmitting information, either as an analog signal with continuous values or a digital signal with discrete values. Signals are used in various systems and networks. Read more about Signal Circuits on our Signal Circuits part category page.
US Tariff Estimator: A3949SLB by Allegro MicroSystems LLC
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 A3949SLB
A3949SLB Part Data Attributes
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A3949SLB
Allegro MicroSystems LLC
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Datasheet
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A3949SLB
Allegro MicroSystems LLC
2.8A, NMOS, PDSO16
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| Rohs Code | No | |
| Part Life Cycle Code | Obsolete | |
| Part Package Code | SOIC | |
| Package Description | Sop, Sop16,.4 | |
| Pin Count | 16 | |
| Reach Compliance Code | Compliant | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.01 | |
| Analog IC - Other Type | Full Bridge Brush Dc Motor Controller | |
| JESD-30 Code | R-PDSO-G16 | |
| JESD-609 Code | e0 | |
| Length | 10.21 Mm | |
| Number of Functions | 1 | |
| Number of Terminals | 16 | |
| Operating Temperature-Max | 85 °C | |
| Operating Temperature-Min | -20 °C | |
| Output Current-Max | 2.8 A | |
| Package Body Material | Plastic/Epoxy | |
| Package Code | SOP | |
| Package Equivalence Code | SOP16,.4 | |
| Package Shape | Rectangular | |
| Package Style | Small Outline | |
| Qualification Status | Not Qualified | |
| Seated Height-Max | 2.64 Mm | |
| Supply Current-Max (Isup) | 8.5 Ma | |
| Supply Voltage-Max (Vsup) | 36 V | |
| Supply Voltage-Min (Vsup) | 8 V | |
| Surface Mount | Yes | |
| Technology | Nmos | |
| Temperature Grade | Other | |
| Terminal Finish | Tin Lead | |
| Terminal Form | Gull Wing | |
| Terminal Pitch | 1.27 Mm | |
| Terminal Position | Dual | |
| Width | 7.49 Mm |
Alternate Parts for A3949SLB
This table gives cross-reference parts and alternative options found for A3949SLB. 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 A3949SLB, 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 |
|---|---|---|---|---|
| A3950SLPTR-T | Allegro MicroSystems LLC | $2.2275 | 2.8A, PDSO16 | A3949SLB vs A3950SLPTR-T |
| A3949SLB-T | Allegro MicroSystems LLC | Check for Price | 2.8A, NMOS, PDSO16 | A3949SLB vs A3949SLB-T |
| A3949SLBTR | Allegro MicroSystems LLC | Check for Price | 2.8A, NMOS, PDSO16 | A3949SLB vs A3949SLBTR |
| A3950SEUTR-T | Allegro MicroSystems LLC | Check for Price | 2.8A | A3949SLB vs A3950SEUTR-T |
A3949SLB Frequently Asked Questions (FAQ)
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The A3949SLB can operate from -40°C to 150°C, but the recommended operating temperature range is -20°C to 85°C for optimal performance.
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The A3949SLB requires a single 5V supply voltage (VCC) and a separate 5V supply voltage (VDD) for the logic interface. Ensure both supplies are decoupled with 0.1 μF capacitors and connected to a stable 5V power source.
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Keep the PCB layout as compact as possible, with the A3949SLB at the center. Use a 4-layer PCB with a solid ground plane on the bottom layer, and ensure all sensitive signals are routed on the top layer. Avoid routing signals under the device.
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The A3949SLB can be configured for different motor types by adjusting the external resistors (R Sense) and capacitors (C Filter) on the sense lines. Refer to the application note AN296070 for specific configuration guidelines.
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The A3949SLB has a maximum current rating of 2.5A per phase, with a peak current limit of 3.5A. Ensure the device is properly heatsinked and the PCB is designed to handle the maximum current.