LM391N-100Alternatives & Equivalent Parts
About LM391N-100
LM391N-100 is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Dual-In-Line 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 | LM391N-100Source | LD1117S12TR | CY7C68013A-56LTXC | SI8660BC-B-IS1R | C0805C100J5GACTU |
|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | STMicroelectronics | Cypress Semiconductor | Silicon Labs | Kemet |
| Package Type | Dual-In-Line Packages | SOT223 (3-Pin) | Quad Flat No-Lead | Small Outline Packages | Other |
| Pin Count | 16 | 4 | 57 | 16 | 2 |
| Temperature Range | — | — | ~ 70.0°C | — | — |
| Price | — | $0.1910 | $7.3631 | $1.5920 | $0.0060 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | OBSOLETE | ACTIVE | OBSOLETE | — | — |
| Electrical Parameters | |||||
| YTEOL | 0 | 6.2 | 0 | — | — |
| Consumer IC Type | AUDIO AMPLIFIER | — | — | — | — |
| Factory Lead Time | — | 12 Weeks | — | — | — |
| Adjustability | — | FIXED | — | — | — |
| Dropout Voltage1-Max | — | 1.2 V | — | — | — |
| Dropout Voltage1-Nom | — | 1.1 V | — | — | — |
| Input Voltage Absolute-Max | — | 15 V | — | — | — |
| Input Voltage-Max | — | 15 V | — | — | — |
| Input Voltage-Min | — | 1.5 V | — | — | — |
| JESD-30 Code | — | R-PDSO-G4 | S-XQCC-N56 | — | — |
| JESD-609 Code | — | e3 | e3 | — | — |
| Line Regulation-Max | — | 0.016% | — | — | — |
| Load Regulation-Max | — | 0.0048% | — | — | — |
| Number of Functions | — | 1 | — | — | — |
| Number of Outputs | — | 1 | — | — | — |
| Operating Temperature TJ-Max | — | 125 °C | — | — | — |
| Output Current1-Max | — | 1.3 A | — | — | — |
| Output Voltage1-Max | — | 1.26 V | — | — | — |
| Output Voltage1-Min | — | 1.14 V | — | — | — |
| Output Voltage1-Nom | — | 1.2 V | — | — | — |
| Package Body Material | — | PLASTIC/EPOXY | UNSPECIFIED | — | — |
| Package Equivalence Code | — | SOT-223 | LCC56,.31SQ,20 | — | — |
| Package Shape | — | RECTANGULAR | SQUARE | — | — |
| Package Style | — | SMALL OUTLINE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | — | — |
| Packing Method | — | TR, 7 INCH | — | — | — |
| Peak Reflow Temperature (Cel) | — | 260 | 260 | — | — |
| Qualification Status | — | Not Qualified | — | — | — |
| Regulator Type | — | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR | — | — | — |
| Surface Mount | — | YES | YES | — | — |
| Technology | — | BIPOLAR | CMOS | — | — |
| Terminal Finish | — | Matte Tin (Sn) - annealed | Matte Tin (Sn) | — | — |
| Terminal Form | — | GULL WING | NO LEAD | — | — |
| Terminal Pitch | — | 2.3 mm | 0.5 mm | — | — |
| Terminal Position | — | DUAL | QUAD | — | — |
| Time@Peak Reflow Temperature-Max (s) | — | 30 | 20 | — | — |
| Voltage Tolerance-Max | — | 2% | — | — | — |
| ## LD1117S12TR Alternates Showing results | — | Image | — | — | — |
| Address Bus Width | — | — | 16 | — | — |
| Bus Compatibility | — | — | I2C; UART; USB | — | — |
| Clock Frequency-Max | — | — | 48 MHz | — | — |
| Data Transfer Rate-Max | — | — | 60 MBps | — | — |
| External Data Bus Width | — | — | 8 | — | — |
| Supply Current-Max | — | — | 85 mA | — | — |
| Supply Voltage-Max | — | — | 3.6 V | — | — |
| Supply Voltage-Min | — | — | 3 V | — | — |
| Supply Voltage-Nom | — | — | 3.3 V | — | — |
| 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.
Need pricing on these alternatives?
Get one quote covering all 4 alternatives for LM391N-100 — response within 24 hours.
Quick Links
Why Look for Alternatives?
Finding alternatives for LM391N-100 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 LM391N-100 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 LM391N-100?
Known equivalents for LM391N-100 include LD1117S12TR, CY7C68013A-56LTXC, SI8660BC-B-IS1R. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of LM391N-100?
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 LM391N-100 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.