LM3940IS-3.3/NOPBAlternatives & Equivalent Parts
About LM3940IS-3.3/NOPB
LM3940IS-3.3/NOPB is a Integrated Circuit component manufactured by Texas Instruments. It comes in a TO-XXX (Inc. DPAK) package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
Specification Comparison
| Parameter | LM3940IS-3.3/NOPBSource | LM3940IS-3.3 | LM3940ISX-3.3/NOPB | LM3940ISX-3.3 | TPS2044BD | TUSB2046IBVF |
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package Type | TO-XXX (Inc. DPAK) | Other | Other | Other | — | Quad Flat Packages |
| Pin Count | 4 | 4 | 4 | 4 | — | 32 |
| Temperature Range | -40.0°C ~ 125.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 125.0°C | — | -40.0°C ~ 85.0°C |
| Price | $1.4225 | $1.4225 | $0.9750 | $0.9750 | $1.9583 | — |
| Electrical Parameters | ||||||
| Pbfree Code | Yes | Yes | Yes | Yes | — | Yes |
| Reach Compliance Code | Not Compliant | — | — | — | — | — |
| YTEOL | 15 | 0 | 15 | 0 | — | 15 |
| Adjustability | FIXED | FIXED | FIXED | FIXED | — | — |
| Dropout Voltage1-Max | 1 V | 1 V | 1 V | 1 V | — | — |
| Dropout Voltage1-Nom | 0.31 V | 0.31 V | 0.31 V | 0.31 V | — | — |
| Input Voltage Absolute-Max | 7.5 V | 7.5 V | 7.5 V | 7.5 V | — | — |
| Input Voltage-Max | 5.5 V | 5.5 V | 5.5 V | 5.5 V | — | — |
| Input Voltage-Min | 4.5 V | 4.5 V | 4.5 V | 4.5 V | — | — |
| JESD-30 Code | R-PSSO-G3 | R-PSSO-G3 | R-PSSO-G3 | R-PSSO-G3 | — | S-PQFP-G32 |
| JESD-609 Code | e3 | e0 | e3 | e0 | — | e4 |
| Line Regulation-Max | 0.04% | 0.04% | 0.04% | 0.04% | — | — |
| Load Regulation-Max | 0.08% | 0.08% | 0.08% | 0.08% | — | — |
| Number of Functions | 1 | 1 | 1 | 1 | — | — |
| Number of Outputs | 1 | 1 | 1 | 1 | — | — |
| Operating Temperature TJ-Max | 125 °C | 125 °C | 125 °C | 125 °C | — | — |
| Operating Temperature TJ-Min | -40 °C | -40 °C | -40 °C | -40 °C | — | — |
| Output Current1-Max | 1 A | 1 A | 1 A | 1 A | — | — |
| Output Voltage1-Max | 3.47 V | 3.47 V | 3.47 V | 3.47 V | — | — |
| Output Voltage1-Min | 3.13 V | 3.13 V | 3.13 V | 3.13 V | — | — |
| Output Voltage1-Nom | 3.3 V | 3.3 V | 3.3 V | 3.3 V | — | — |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | — | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP3H,.55TB | SMSIP3H,.55TB | SMSIP3H,.55TB | SMSIP3H,.55TB | — | — |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | — | SQUARE |
| Package Style | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE | — | FLATPACK, LOW PROFILE |
| Packing Method | TUBE | TUBE | TR | TR | — | — |
| Peak Reflow Temperature (Cel) | 245 | 235 | 245 | 235 | — | 260 |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified | Not Qualified | — | — |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR | — | — |
| Surface Mount | YES | YES | YES | YES | — | YES |
| Technology | BIPOLAR | BIPOLAR | BIPOLAR | BIPOLAR | — | CMOS |
| Terminal Finish | Matte Tin (Sn) | Tin/Lead (Sn/Pb) | Matte Tin (Sn) | Tin/Lead (Sn/Pb) | — | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING | GULL WING | GULL WING | GULL WING | — | GULL WING |
| Terminal Pitch | 2.54 mm | 2.54 mm | 2.54 mm | 2.54 mm | — | 0.8 mm |
| Terminal Position | SINGLE | SINGLE | SINGLE | SINGLE | — | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 | NOT SPECIFIED | 30 | NOT SPECIFIED | — | 30 |
| Voltage Tolerance-Max | 5.2% | 5.2% | 5.2% | 5.2% | — | — |
| ## LM3940IS-3.3/NOPB Alternates Showing results | Image | — | — | — | — | — |
| Date Of Intro | — | 1995-01-01 | — | 1995-01-01 | — | 2017-07-06 |
| ## LM3940IS-3.3 Alternates Showing results | — | Image | — | — | — | — |
| ## LM3940ISX-3.3/NOPB Alternates Showing results | — | — | Image | — | — | — |
| Additional Feature | — | — | — | — | — | SUPPORTS 6-MHZ OPERATION THROUGH A CRYSTAL INPUT OR A 48-MHZ INPUT CLOCK |
| Bus Compatibility | — | — | — | — | — | VBUS |
| Clock Frequency-Max | — | — | — | — | — | 6 MHz |
| Data Transfer Rate-Max | — | — | — | — | — | 1.5 MBps |
| Supply Current-Max | — | — | — | — | — | 40 mA |
| Supply Voltage-Max | — | — | — | — | — | 3.6 V |
| Supply Voltage-Min | — | — | — | — | — | 3.3 V |
| Supply Voltage-Nom | — | — | — | — | — | 3.3 V |
| Temperature Grade | — | — | — | — | — | INDUSTRIAL |
| uPs/uCs/Peripheral ICs Type | — | — | — | — | — | BUS CONTROLLER, UNIVERSAL SERIAL BUS |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Quick Links
Regulator, 3.3V, 1V Dropout, BIPolar, PSSO3
Regulator, 3.3V, 1V Dropout, BIPolar, PSSO3
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Why Look for Alternatives?
Finding alternatives for LM3940IS-3.3/NOPB 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 LM3940IS-3.3/NOPB 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 LM3940IS-3.3/NOPBFAQ
What is equivalent to LM3940IS-3.3/NOPB?
Known equivalents for LM3940IS-3.3/NOPB include LM3940IS-3.3, LM3940ISX-3.3/NOPB, LM3940ISX-3.3. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of LM3940IS-3.3/NOPB?
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 LM3940IS-3.3/NOPB 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.