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Part Details for L4973V3.3 by STMicroelectronics
Results Overview of L4973V3.3 by STMicroelectronics
- Distributor Offerings: (6 listings)
- Number of FFF Equivalents: (0 replacements)
- CAD Models: (Available)
- Number of Functional Equivalents: (3 options)
- 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.
Applications
Energy and Power Systems
Transportation and Logistics
Renewable Energy
Automotive
L4973V3.3 Information
L4973V3.3 by STMicroelectronics is a Switching Regulator or Controller.
Switching Regulator or Controllers are under the broader part category of Power Circuits.
A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.
Price & Stock for L4973V3.3
| Part # | Distributor | Description | Stock | Price | Buy | |
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DISTI #
70407374
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RS | Stepdown switch regulator, L4973V3.3 3.5A Min Qty: 10 Package Multiple: 1 Container: Bulk | 0 |
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$2.7900 / $3.8900 | RFQ |
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STMicroelectronics | 3.5 A step down switching regulator RoHS: Compliant Min Qty: 1 | 650 |
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$3.7200 / $5.9400 | Buy Now |
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DISTI #
L4973V3.3
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Avnet Silica | Conv DCDC Single Step Down 8V to 55V 18Pin PDIP Tube (Alt: L4973V3.3) RoHS: Compliant Min Qty: 20 Package Multiple: 20 Lead time: 143 Weeks, 0 Days | Silica - 0 |
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Buy Now | |
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Cytech Systems Limited | IC REG BUCK ADJ/0.5V 3.5A 18DIP | 500 |
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RFQ | |
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DISTI #
L4973V3.3
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EBV Elektronik | Conv DCDC Single Step Down 8V to 55V 18Pin PDIP Tube (Alt: L4973V3.3) RoHS: Compliant Min Qty: 20 Package Multiple: 20 Lead time: 143 Weeks, 0 Days | EBV - 0 |
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Buy Now | |
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Vyrian | Other Function Semiconductors | 25 |
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RFQ |
Part Details for L4973V3.3
L4973V3.3 CAD Models
L4973V3.3 Part Data Attributes
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L4973V3.3
STMicroelectronics
Buy Now
Datasheet
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Compare Parts:
L4973V3.3
STMicroelectronics
3.5 A step down switching regulator
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| Rohs Code | Yes | |
| Part Life Cycle Code | Obsolete | |
| Ihs Manufacturer | STMICROELECTRONICS | |
| Part Package Code | DIP | |
| Package Description | LEAD FREE, PLASTIC, DIP-18 | |
| Pin Count | 18 | |
| Reach Compliance Code | not_compliant | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.01 | |
| Samacsys Manufacturer | STMicroelectronics | |
| Analog IC - Other Type | SWITCHING REGULATOR | |
| Control Mode | VOLTAGE-MODE | |
| Control Technique | PULSE WIDTH MODULATION | |
| Input Voltage-Max | 55 V | |
| Input Voltage-Min | 8 V | |
| Input Voltage-Nom | 24 V | |
| JESD-30 Code | R-PDIP-T18 | |
| JESD-609 Code | e3 | |
| Number of Functions | 1 | |
| Number of Terminals | 18 | |
| Output Current-Max | 5.5 A | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Code | DIP | |
| Package Equivalence Code | DIP18,.3 | |
| Package Shape | RECTANGULAR | |
| Package Style | IN-LINE | |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED | |
| Qualification Status | Not Qualified | |
| Seated Height-Max | 5.1 mm | |
| Surface Mount | NO | |
| Switcher Configuration | BUCK | |
| Switching Frequency-Max | 300 kHz | |
| Technology | BCDMOS | |
| Terminal Finish | Matte Tin (Sn) | |
| Terminal Form | THROUGH-HOLE | |
| Terminal Pitch | 2.54 mm | |
| Terminal Position | DUAL | |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED | |
| Width | 7.62 mm |
Alternate Parts for L4973V3.3
This table gives cross-reference parts and alternative options found for L4973V3.3. 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 L4973V3.3, 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 |
|---|---|---|---|---|
| L4973V3 | STMicroelectronics | Check for Price | 3.5A SWITCHING REGULATOR, 300kHz SWITCHING FREQ-MAX, PDIP18, POWER, PLASTIC, DIP-18 | L4973V3.3 vs L4973V3 |
| L4973V5 | STMicroelectronics | Check for Price | 3.5A SWITCHING REGULATOR, 300kHz SWITCHING FREQ-MAX, PDIP18, POWER, PLASTIC, DIP-18 | L4973V3.3 vs L4973V5 |
| L4973V5.1 | STMicroelectronics | Check for Price | 3.5 A step down switching regulator | L4973V3.3 vs L4973V5.1 |
L4973V3.3 Frequently Asked Questions (FAQ)
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The L4973V3.3 can handle input voltages up to 15V, but it's recommended to keep it below 12V for optimal performance and reliability.
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To ensure stability, make sure to use a minimum output capacitance of 10uF, and a maximum ESR of 1 ohm. Also, keep the input and output capacitors close to the IC and use a good quality PCB layout.
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The L4973V3.3 requires a minimum load current of 5mA to regulate properly. If the load current is less than 5mA, the output voltage may not be regulated accurately.
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The L4973V3.3 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 voltage according to the temperature derating curve in the datasheet.
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The output voltage of the L4973V3.3 is fixed at 3.3V, but it can be adjusted using an external resistor divider network. The output voltage can be calculated using the formula: Vout = 3.3V * (1 + R1/R2), where R1 and R2 are the resistors in the divider network.