LM2577T-12/LF03Alternatives & Equivalent Parts
About LM2577T-12/LF03
LM2577T-12/LF03 is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Transistor Outline, Vertical package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
Specification Comparison
| Parameter | LM2577T-12/LF03Source | LM2577M-ADJ | LM2576T-5.0 |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Package Type | Transistor Outline, Vertical | Small Outline Packages | Other |
| Pin Count | 5 | 24 | 3 |
| Temperature Range | -40.0°C ~ 125.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 125.0°C |
| Price | $12.5000 | $4.8854 | $1.1201 |
| Electrical Parameters | |||
| Pbfree Code | No | No | Yes |
| YTEOL | 0 | — | 0 |
| Analog IC - Other Type | SWITCHING REGULATOR | SWITCHING REGULATOR | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE | CURRENT-MODE | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION |
| Input Voltage-Max | 40 V | 40 V | 40 V |
| Input Voltage-Min | 3.5 V | 3.5 V | 4 V |
| Input Voltage-Nom | 5 V | 5 V | 12 V |
| JESD-30 Code | R-PZIP-T5 | R-PDSO-G24 | R-PSFM-T5 |
| JESD-609 Code | e3 | e0 | e0 |
| Number of Functions | 1 | 1 | 1 |
| Output Current-Max | 6 A | 6 A | 3 A |
| Output Voltage-Max | 12.6 V | — | 37 V |
| Output Voltage-Min | 11.4 V | — | 3.3 V |
| Output Voltage-Nom | 12 V | 1.23 V | 5 V |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | ZIP5,.15,.2,67TB | SOP24,.4 | — |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | IN-LINE | SMALL OUTLINE | FLANGE MOUNT |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified |
| Supply Current-Max (Isup) | 85 mA | — | — |
| Surface Mount | NO | YES | NO |
| Switcher Configuration | BOOST | BOOST | BUCK |
| Switching Frequency-Max | 62 kHz | 62 kHz | 63 kHz |
| Technology | BIPOLAR | BIPOLAR | — |
| Temperature Grade | AUTOMOTIVE | AUTOMOTIVE | AUTOMOTIVE |
| Terminal Finish | MATTE TIN | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE | GULL WING | THROUGH-HOLE |
| Terminal Pitch | 1.7 mm | 1.27 mm | 1.7 mm |
| Terminal Position | ZIG-ZAG | DUAL | SINGLE |
| ## LM2577T-12/LF03 Alternates Showing results | Image | — | — |
| Reach Compliance Code | — | Compliant | — |
| Peak Reflow Temperature (Cel) | — | 260 | NOT APPLICABLE |
| Subcategory | — | Switching Regulator or Controllers | — |
| Time@Peak Reflow Temperature-Max (s) | — | 40 | NOT APPLICABLE |
| ## LM2577M-ADJ Alternates Showing results | — | Image | — |
| Date Of Intro | — | — | 1993-01-01 |
| Number of Outputs | — | — | 1 |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
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Why Look for Alternatives?
Finding alternatives for LM2577T-12/LF03 is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating LM2577T-12/LF03 replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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Request Alternatives for LM2577T-12/LF03FAQ
What is equivalent to LM2577T-12/LF03?
Known equivalents for LM2577T-12/LF03 include LM2577M-ADJ, LM2576T-5.0. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of LM2577T-12/LF03?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify LM2577T-12/LF03 alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.