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Part Details for LF33ABDT by STMicroelectronics
Results Overview of LF33ABDT by STMicroelectronics
- Distributor Offerings: (4 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
Industrial Automation
Energy and Power Systems
Healthcare
Transportation and Logistics
Renewable Energy
Automotive
Robotics and Drones
LF33ABDT Information
LF33ABDT by STMicroelectronics is a Linear Regulator IC.
Linear Regulator ICs 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 LF33ABDT
| Part # | Distributor | Description | Stock | Price | Buy | |
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Ameya Holding Limited | IC REG LDO 3.3V 0.5A DPAK | 663 |
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RFQ | |
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Component Electronics, Inc | IN STOCK SHIP TODAY | 6 |
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$0.7500 / $1.1500 | Buy Now |
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Vyrian | Regulators | 734 |
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RFQ | |
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Win Source Electronics | IC REG LDO 3.3V 0.5A DPAK | 40920 |
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$0.5143 / $0.6642 | Buy Now |
Part Details for LF33ABDT
LF33ABDT CAD Models
LF33ABDT Part Data Attributes
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LF33ABDT
STMicroelectronics
Buy Now
Datasheet
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Compare Parts:
LF33ABDT
STMicroelectronics
3.3V FIXED POSITIVE LDO REGULATOR, 0.7V DROPOUT, PSSO2, LEAD FREE, DPAK-3
Select a part to compare: |
| Rohs Code | Yes | |
| Part Life Cycle Code | Obsolete | |
| Ihs Manufacturer | STMICROELECTRONICS | |
| Part Package Code | TO-252 | |
| Package Description | LEAD FREE, DPAK-3 | |
| Pin Count | 3 | |
| Reach Compliance Code | not_compliant | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.01 | |
| Samacsys Manufacturer | STMicroelectronics | |
| Adjustability | FIXED | |
| Dropout Voltage1-Max | 0.7 V | |
| Dropout Voltage1-Nom | 0.4 V | |
| Input Voltage Absolute-Max | 40 V | |
| Input Voltage-Max | 16 V | |
| Input Voltage-Min | 4.3 V | |
| JESD-30 Code | R-PSSO-G2 | |
| JESD-609 Code | e3 | |
| Length | 6.5 mm | |
| Line Regulation-Max | 0.016% | |
| Load Regulation-Max | 0.016% | |
| Moisture Sensitivity Level | 1 | |
| Number of Functions | 1 | |
| Number of Outputs | 1 | |
| Number of Terminals | 2 | |
| Operating Temperature TJ-Max | 125 °C | |
| Operating Temperature TJ-Min | -40 °C | |
| Output Current1-Max | 0.5 A | |
| Output Voltage1-Max | 3.366 V | |
| Output Voltage1-Min | 3.234 V | |
| Output Voltage1-Nom | 3.3 V | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Code | TO-252 | |
| Package Equivalence Code | SMSIP3H,.38,90TB | |
| Package Shape | RECTANGULAR | |
| Package Style | SMALL OUTLINE | |
| Peak Reflow Temperature (Cel) | 260 | |
| Qualification Status | Not Qualified | |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR | |
| Seated Height-Max | 2.63 mm | |
| Surface Mount | YES | |
| Technology | BIPOLAR | |
| Terminal Finish | Matte Tin (Sn) - annealed | |
| Terminal Form | GULL WING | |
| Terminal Pitch | 2.28 mm | |
| Terminal Position | SINGLE | |
| Time@Peak Reflow Temperature-Max (s) | 30 | |
| Voltage Tolerance-Max | 2% | |
| Width | 6.1 mm |
Alternate Parts for LF33ABDT
This table gives cross-reference parts and alternative options found for LF33ABDT. 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 LF33ABDT, 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 |
|---|---|---|---|---|
| LF33ABDT-TR | STMicroelectronics | $0.7048 | Very low drop voltage regulator with inhibit | LF33ABDT vs LF33ABDT-TR |
| NCP5501DT33RKG | onsemi | $0.3377 | LDO Regulator, 500 mA, 1.25 to 5 V, High PSRR, Adjustable Vout: 3.3 V, DPAK (SINGLE GAUGE) TO-252, 2500-REEL | LF33ABDT vs NCP5501DT33RKG |
| LF33CDT-TR | STMicroelectronics | $0.6972 | Very low drop voltage regulator with inhibit | LF33ABDT vs LF33CDT-TR |
LF33ABDT Frequently Asked Questions (FAQ)
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STMicroelectronics provides a recommended PCB layout in the application note AN1071, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize noise.
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The output capacitor value depends on the output voltage, output current, and desired ripple voltage. A general rule of thumb is to use a capacitor with a value between 10uF to 22uF, with a voltage rating at least 2x the output voltage. Consult the datasheet and application notes for more specific guidance.
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Although the datasheet specifies a maximum input voltage of 15V, it's recommended to limit the input voltage to 12V to ensure reliable operation and prevent damage to the device.
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To ensure stability, follow the recommended PCB layout, use a sufficient output capacitor, and add a 10nF to 100nF capacitor between the VIN and GND pins to filter out high-frequency noise. Additionally, ensure that the input voltage is well-regulated and the output load is within the specified range.
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The typical dropout voltage of the LF33ABDT is around 1.5V to 2V, depending on the output current and input voltage. This means that the input voltage should be at least 1.5V to 2V higher than the desired output voltage to ensure proper regulation.