LM51551QDSSRQ1Alternatives & Equivalent Parts
About LM51551QDSSRQ1
LM51551QDSSRQ1 is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Small Outline No-lead package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
Specification Comparison
| Parameter | LM51551QDSSRQ1Source | LM51551DSST | LM51551DSSR | XLM51551QDSSTQ1 | LM51551QDSSTQ1 |
|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package Type | Small Outline No-lead | Small Outline No-lead | Small Outline No-lead | Small Outline No-lead | Small Outline No-lead |
| Pin Count | 13 | 13 | 13 | 13 | 13 |
| Temperature Range | -40.0°C ~ 150.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 150.0°C | -40.0°C ~ 150.0°C |
| Price | $0.8200 | $1.4376 | $0.9963 | — | $1.9321 |
| Electrical Parameters | |||||
| Pbfree Code | Yes | Yes | Yes | — | Yes |
| Date Of Intro | 2019-06-29 | 2018-12-16 | 2018-12-16 | 2018-08-31 | 2019-06-29 |
| YTEOL | 15 | 15 | 15 | 0 | 15 |
| Analog IC - Other Type | SWITCHING CONTROLLER | SWITCHING CONTROLLER | SWITCHING CONTROLLER | SWITCHING CONTROLLER | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE | CURRENT-MODE | CURRENT-MODE | CURRENT-MODE | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION |
| Input Voltage-Max | 45 V | 45 V | 45 V | 45 V | 45 V |
| Input Voltage-Min | 1.5 V | 1.5 V | 1.5 V | 2.97 V | 1.5 V |
| Input Voltage-Nom | 12 V | 12 V | 12 V | 12 V | 12 V |
| JESD-30 Code | R-PDSO-N12 | R-PDSO-N12 | R-PDSO-N12 | R-PDSO-N12 | R-PDSO-N12 |
| JESD-609 Code | e3 | e4 | e4 | — | e3 |
| Number of Functions | 1 | 1 | 1 | 1 | 1 |
| Number of Outputs | 1 | 1 | 1 | — | 1 |
| Output Current-Max | 15 A | — | — | — | 15 A |
| Output Voltage-Max | 300 V | 300 V | 300 V | — | 300 V |
| Output Voltage-Min | 1.5 V | 1.5 V | 1.5 V | — | 1.5 V |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC12,.08,20 | SOLCC12,.08,20 | SOLCC12,.08,20 | — | SOLCC12,.08,20 |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE | SMALL OUTLINE, HEAT SINK/SLUG | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 | 260 | 260 | — | 260 |
| Screening Level | AEC-Q100 | — | — | AEC-Q100 | AEC-Q100 |
| Supply Current-Max (Isup) | 0.54 mA | — | — | — | 0.54 mA |
| Surface Mount | YES | YES | YES | YES | YES |
| Switcher Configuration | BUCK-BOOST | BUCK-BOOST | BUCK-BOOST | BOOST | BUCK-BOOST |
| Switching Frequency-Max | 2200 kHz | 2200 kHz | 2200 kHz | 2420 kHz | 2200 kHz |
| Technology | BICMOS | — | — | — | BICMOS |
| Temperature Grade | AUTOMOTIVE | AUTOMOTIVE | AUTOMOTIVE | AUTOMOTIVE | AUTOMOTIVE |
| Terminal Finish | Tin (Sn) | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | — | Matte Tin (Sn) |
| Terminal Form | NO LEAD | NO LEAD | NO LEAD | NO LEAD | NO LEAD |
| Terminal Pitch | 0.5 mm | 0.5 mm | 0.5 mm | 0.5 mm | 0.5 mm |
| Terminal Position | DUAL | DUAL | DUAL | DUAL | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 | 30 | 30 | — | 30 |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Quick Links
Switching Controller, Current-mode, 2200kHz Switching Freq-Max, PDSO12
Switching Controller, Current-mode, 2200kHz Switching Freq-Max, PDSO12
Switching Controller, Current-mode, 2420kHz Switching Freq-Max, PDSO12
Switching Controller, Current-mode, 15A, 2200kHz Switching Freq-Max, BICMOS, PDSO12
Why Look for Alternatives?
Finding alternatives for LM51551QDSSRQ1 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 LM51551QDSSRQ1 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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What is equivalent to LM51551QDSSRQ1?
Known equivalents for LM51551QDSSRQ1 include LM51551DSST, LM51551DSSR, XLM51551QDSSTQ1. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of LM51551QDSSRQ1?
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 LM51551QDSSRQ1 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.