LM3940ISX-3.3/NOPBAlternatives & Equivalent Parts
About LM3940ISX-3.3/NOPB
LM3940ISX-3.3/NOPB is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Other 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 | LM3940ISX-3.3/NOPBSource | LM3940IS-3.3 | LM3940IS-3.3/NOPB | LM3940ISX-3.3 | STM8S105S4T6CTR | PAM8320RDR |
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | STMicroelectronics | Diodes Inc. |
| Package Type | Other | Other | TO-XXX (Inc. DPAK) | Other | Quad Flat Packages | Small Outline Packages |
| Pin Count | 4 | 4 | 4 | 4 | 44 | 17 |
| 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 | -40.0°C ~ 85.0°C |
| Price | $0.9750 | $1.4225 | $1.4225 | $0.9750 | $1.3731 | $0.9590 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | OBSOLETE | ACTIVE | OBSOLETE | ACTIVE | ACTIVE |
| Electrical Parameters | ||||||
| Pbfree Code | Yes | Yes | Yes | Yes | — | — |
| YTEOL | 15 | 0 | 15 | 0 | 9 | 8 |
| 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-G44 | R-PDSO-G16 |
| JESD-609 Code | e3 | e0 | e3 | e0 | e3 | e3 |
| 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 | — | 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 | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP3H,.55TB | SMSIP3H,.55TB | SMSIP3H,.55TB | SMSIP3H,.55TB | QFP44,.47SQ,32 | — |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | SQUARE | RECTANGULAR |
| Package Style | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE | FLATPACK, LOW PROFILE | SMALL OUTLINE, HEAT SINK/SLUG |
| Packing Method | TR | TUBE | TUBE | TR | — | — |
| Peak Reflow Temperature (Cel) | 245 | 235 | 245 | 235 | 260 | 260 |
| Qualification Status | Not Qualified | 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 | YES |
| Technology | BIPOLAR | BIPOLAR | BIPOLAR | BIPOLAR | CMOS | CMOS |
| Terminal Finish | Matte Tin (Sn) | Tin/Lead (Sn/Pb) | Matte Tin (Sn) | Tin/Lead (Sn/Pb) | Matte Tin (Sn) - annealed | Matte Tin (Sn) |
| Terminal Form | GULL WING | 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 | 1.27 mm |
| Terminal Position | SINGLE | SINGLE | SINGLE | SINGLE | QUAD | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 | NOT SPECIFIED | 30 | NOT SPECIFIED | 30 | 30 |
| Voltage Tolerance-Max | 5.2% | 5.2% | 5.2% | 5.2% | — | — |
| ## LM3940ISX-3.3/NOPB Alternates Showing results | Image | — | — | — | — | — |
| Date Of Intro | — | 1995-01-01 | — | 1995-01-01 | — | — |
| ## LM3940IS-3.3 Alternates Showing results | — | Image | — | — | — | — |
| Reach Compliance Code | — | — | Not Compliant | — | — | — |
| ## LM3940IS-3.3/NOPB Alternates Showing results | — | — | Image | — | — | — |
| Has ADC | — | — | — | — | YES | — |
| Bit Size | — | — | — | — | 8 | — |
| Boundary Scan | — | — | — | — | NO | — |
| CPU Family | — | — | — | — | STM8 | — |
| Clock Frequency-Max | — | — | — | — | 16 MHz | — |
| DAC Channels | — | — | — | — | NO | — |
| DMA Channels | — | — | — | — | NO | — |
| Format | — | — | — | — | FIXED POINT | — |
| Integrated Cache | — | — | — | — | NO | — |
| Low Power Mode | — | — | — | — | YES | — |
| Number of External Interrupts | — | — | — | — | 31 | — |
| Number of I/O Lines | — | — | — | — | 34 | — |
| Number of Serial I/Os | — | — | — | — | 1 | — |
| Number of Timers | — | — | — | — | 5 | — |
| On Chip Data RAM Width | — | — | — | — | 8 | — |
| On Chip Program ROM Width | — | — | — | — | 8 | — |
| PWM Channels | — | — | — | — | YES | — |
| RAM (bytes) | — | — | — | — | 2048 | — |
| RAM (words) | — | — | — | — | 1024 | — |
| ROM (words) | — | — | — | — | 16384 | — |
| ROM Programmability | — | — | — | — | FLASH | — |
| Speed | — | — | — | — | 16 MHz | — |
| Supply Current-Max | — | — | — | — | 8 mA | — |
| Supply Voltage-Max | — | — | — | — | 5.5 V | — |
| Supply Voltage-Min | — | — | — | — | 3.3 V | — |
| Supply Voltage-Nom | — | — | — | — | 3.3 V | — |
| Temperature Grade | — | — | — | — | INDUSTRIAL | INDUSTRIAL |
| uPs/uCs/Peripheral ICs Type | — | — | — | — | MICROCONTROLLER, RISC | — |
| Factory Lead Time | — | — | — | — | — | 12 Weeks |
| Bandwidth-Nom | — | — | — | — | — | 20 kHz |
| Consumer IC Type | — | — | — | — | — | CLASS D AUDIO AMPLIFIER |
| Gain | — | — | — | — | — | 20 dB |
| Number of Channels | — | — | — | — | — | 1 |
| Output Power-Nom | — | — | — | — | — | 20 W |
| Supply Voltage-Max (Vsup) | — | — | — | — | — | 15 V |
| Supply Voltage-Min (Vsup) | — | — | — | — | — | 4.5 V |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
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Get one quote covering all 5 alternatives for LM3940ISX-3.3/NOPB — response within 24 hours.
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 LM3940ISX-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 LM3940ISX-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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FAQ
What is equivalent to LM3940ISX-3.3/NOPB?
Known equivalents for LM3940ISX-3.3/NOPB include LM3940IS-3.3, LM3940IS-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 LM3940ISX-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 LM3940ISX-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.