L9781Alternatives & Equivalent Parts
About L9781
L9781 is a Integrated Circuit component manufactured by STMicroelectronics. It comes in a Quad Flat Packages package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Specification Comparison
| Parameter | L9781Source | L9780 | L9788 | L9780TR | L9788TR | L9758TR |
|---|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package Type | Quad Flat Packages | Quad Flat Packages | Quad Flat Packages | Quad Flat Packages | Quad Flat Packages | Small Outline Packages |
| Pin Count | 64 | 48 | 100 | 48 | 101 | 37 |
| Temperature Range | — | -40.0°C ~ 125.0°C | — | -40.0°C ~ 125.0°C | — | -40.0°C ~ 125.0°C |
| Price | $4.7899 | $5.5775 | $8.1300 | $5.0720 | $7.6500 | $4.7396 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | OBSOLETE |
| Electrical Parameters | ||||||
| Factory Lead Time | 52 Weeks | 26 Weeks | 36 Weeks | 26 Weeks | 36 Weeks | 52 Weeks |
| Analog IC - Other Type | ANALOG CIRCUIT | ANALOG CIRCUIT | ANALOG CIRCUIT | ANALOG CIRCUIT | ANALOG CIRCUIT | SWITCHING CONTROLLER |
| JESD-609 Code | e3 | e4 | — | e4 | — | — |
| Peak Reflow Temperature (Cel) | 260 | 260 | — | 260 | NOT SPECIFIED | — |
| Terminal Finish | Matte Tin (Sn) - annealed | Nickel/Palladium/Gold (Ni/Pd/Au) | — | Nickel/Palladium/Gold (Ni/Pd/Au) | — | — |
| JESD-30 Code | — | S-XQCC-N48 | — | S-XQCC-N48 | — | R-PDSO-G36 |
| Number of Functions | — | 1 | — | 1 | — | 1 |
| Package Body Material | — | UNSPECIFIED | — | UNSPECIFIED | — | PLASTIC/EPOXY |
| Package Shape | — | SQUARE | — | SQUARE | — | RECTANGULAR |
| Package Style | — | CHIP CARRIER | — | CHIP CARRIER | — | SMALL OUTLINE, SHRINK PITCH |
| Supply Voltage-Max (Vsup) | — | 5.1 V | — | 5.1 V | — | — |
| Supply Voltage-Min (Vsup) | — | 4.9 V | — | 4.9 V | — | — |
| Surface Mount | — | YES | — | YES | — | YES |
| Temperature Grade | — | AUTOMOTIVE | — | AUTOMOTIVE | — | AUTOMOTIVE |
| Terminal Form | — | NO LEAD | — | NO LEAD | — | GULL WING |
| Terminal Pitch | — | 0.5 mm | — | 0.5 mm | — | 0.65 mm |
| Terminal Position | — | QUAD | — | QUAD | — | DUAL |
| YTEOL | — | — | 9 | — | 9 | 0 |
| Time@Peak Reflow Temperature-Max (s) | — | — | — | — | NOT SPECIFIED | — |
| Control Mode | — | — | — | — | — | CURRENT-MODE |
| Input Voltage-Max | — | — | — | — | — | 40 V |
| Input Voltage-Min | — | — | — | — | — | 4 V |
| Input Voltage-Nom | — | — | — | — | — | 5.5 V |
| Package Equivalence Code | — | — | — | — | — | SSOP36,.56 |
| Qualification Status | — | — | — | — | — | Not Qualified |
| Switcher Configuration | — | — | — | — | — | BUCK-BOOST |
| Switching Frequency-Max | — | — | — | — | — | 450 kHz |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
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Quick Links
Why Look for Alternatives?
Finding alternatives for L9781 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 L9781 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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FAQ
What is equivalent to L9781?
Known equivalents for L9781 include L9780, L9788, L9780TR. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of L9781?
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 L9781 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.