LD2981CM33TRAlternatives & Equivalent Parts
About LD2981CM33TR
LD2981CM33TR is a Integrated Circuit component manufactured by STMicroelectronics. It comes in a SOT23 (5-Pin) package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
Specification Comparison
| Parameter | LD2981CM33TRSource | LP2981IM5-3.3/NOPB | LP2981-33DBVT | TPS76201DBVR | ADUM4160BRWZ | ADUM6000ARWZ | OPA1637DGKT | 24LC025-I/ST | LD2981CU33TR | LD2981CM50TR |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices | Analog Devices | Texas Instruments | Microchip | STMicroelectronics | STMicroelectronics |
| Package Type | SOT23 (5-Pin) | SOT23 (5-Pin) | SOT23 (5-Pin) | SOT23 (5-Pin) | Small Outline Packages | Small Outline Packages | Small Outline Packages | Small Outline Packages | Other | SOT23 (5-Pin) |
| Pin Count | 5 | 5 | 5 | 5 | 16 | 16 | 8 | 8 | 3 | 5 |
| Temperature Range | — | -40.0°C ~ 125.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 105.0°C | -40.0°C ~ 105.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 85.0°C | — | — |
| Price | $0.2350 | $0.3375 | $0.1714 | $0.5537 | $6.8200 | $4.8545 | $1.7518 | — | — | $0.1987 |
| Electrical Parameters | ||||||||||
| Factory Lead Time | 12 Weeks | — | — | — | — | — | — | 17 Weeks | 12 Weeks | 12 Weeks |
| YTEOL | 6.4 | 15 | 0 | 15 | 10 | 10 | 15 | 8 | 6.2 | 6.4 |
| Adjustability | FIXED | FIXED | FIXED | ADJUSTABLE | — | — | — | — | FIXED | FIXED |
| Dropout Voltage1-Max | 0.375 V | 0.375 V | 0.375 V | — | — | — | — | — | 0.375 V | 0.375 V |
| Dropout Voltage1-Nom | 0.18 V | 0.2 V | 0.2 V | 0.1 V | — | — | — | — | 0.18 V | 0.12 V |
| Input Voltage Absolute-Max | 16 V | 16 V | 16 V | — | — | — | — | — | 16 V | 16 V |
| Input Voltage-Max | 16 V | 16 V | 16 V | 10 V | — | 5.5 V | — | — | 16 V | 16 V |
| Input Voltage-Min | 4.3 V | 4.3 V | 2.2 V | 2.7 V | — | 4.5 V | — | — | 2.5 V | 2.5 V |
| JESD-30 Code | R-PDSO-G5 | R-PDSO-G5 | R-PDSO-G5 | R-PDSO-G5 | R-PDSO-G16 | R-PDMA-G16 | S-PDSO-G8 | R-PDSO-G8 | R-PSSO-F3 | R-PDSO-G5 |
| JESD-609 Code | e3 | e3 | e4 | e4 | e3 | e3 | e4 | e3 | e3 | e3 |
| Line Regulation-Max | 0.0123% | 0.0124% | 0.0124% | — | — | — | — | — | 0.0124% | 0.016% |
| Number of Functions | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Number of Outputs | 1 | 1 | 1 | 1 | — | 2 | — | — | 1 | 1 |
| Operating Temperature TJ-Max | 125 °C | 125 °C | 125 °C | 125 °C | — | — | — | — | 125 °C | 125 °C |
| Operating Temperature TJ-Min | -40 °C | -40 °C | -40 °C | -40 °C | — | — | — | — | -40 °C | -40 °C |
| Output Current1-Max | 0.1 A | 0.1 A | 0.1 A | 0.1 A | — | — | — | — | 0.1 A | 0.1 A |
| Output Voltage1-Max | 3.415 V | 3.4155 V | 3.4155 V | 5.5 V | — | — | — | — | 3.415 V | 5.175 V |
| Output Voltage1-Min | 3.184 V | 3.1845 V | 3.1845 V | 0.7 V | — | — | — | — | 3.184 V | 4.825 V |
| Output Voltage1-Nom | 3.3 V | 3.3 V | 3.3 V | — | — | — | — | — | 3.3 V | 5 V |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 | TSOP5/6,.11,37 | TSOP5/6,.11,37 | TSOP5/6,.11,37 | — | SOP16,.4 | TSSOP8,.20 | TSSOP8,.25 | TO-243 | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | SQUARE | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH | SMALL OUTLINE | MICROELECTRONIC ASSEMBLY | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH | SMALL OUTLINE | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Packing Method | TR | TR | TR | TR | — | — | TR | — | TR | TR |
| Peak Reflow Temperature (Cel) | 260 | 260 | 260 | 260 | 260 | 260 | 260 | 260 | 260 | 260 |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified | Not Qualified | 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 | ADJUSTABLE 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 | YES | YES | YES | YES |
| Technology | BIPOLAR | BIPOLAR | BIPOLAR | PMOS | CMOS | HYBRID | BIPOLAR | CMOS | BIPOLAR | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) - annealed | Matte Tin (Sn) | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | Matte Tin (Sn) | Matte Tin (Sn) | Nickel/Palladium/Gold (Ni/Pd/Au) | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING | GULL WING | GULL WING | GULL WING | GULL WING | GULL WING | GULL WING | GULL WING | FLAT | GULL WING |
| Terminal Pitch | 0.95 mm | 0.95 mm | 0.95 mm | 0.95 mm | 1.27 mm | 1.27 mm | 0.65 mm | 0.65 mm | 1.5 mm | 0.95 mm |
| Terminal Position | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL | SINGLE | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 40 | 30 | 30 |
| Voltage Tolerance-Max | 3.5% | 3.5% | 3.5% | 3% | — | — | — | — | 3.5% | 3.5% |
| ## LD2981CM33TR Alternates Showing results | Image | — | — | — | — | — | — | — | — | — |
| Pbfree Code | — | Yes | — | Yes | No | No | Yes | Yes | — | — |
| Load Regulation-Max | — | 0.0016335% | 0.0016335% | — | — | 5% | — | — | — | 0.0216% |
| Line Regulation-Max (%/V) | — | — | — | 0.1 | — | — | — | — | — | — |
| Load Regulation-Max(%) | — | — | — | 1.71% | — | — | — | — | — | — |
| ## TPS76201DBVR Alternates Showing results | — | — | — | Image | — | — | — | — | — | — |
| Source Url Status Check Date | — | — | — | — | 2013-05-01 14:56:50.887 | — | — | — | — | — |
| Manufacturer Package Code | — | — | — | — | RW-16 | RW-16 | — | TSSOP-8 | — | — |
| Interface IC Type | — | — | — | — | DIGITAL ISOLATOR | — | — | — | — | — |
| Supply Voltage-Max | — | — | — | — | 3.6 V | — | — | — | — | — |
| Supply Voltage-Min | — | — | — | — | 3.1 V | — | — | — | — | — |
| Supply Voltage-Nom | — | — | — | — | 3.3 V | — | — | — | — | — |
| Temperature Grade | — | — | — | — | INDUSTRIAL | INDUSTRIAL | AUTOMOTIVE | INDUSTRIAL | — | — |
| ## ADUM4160BRWZ Alternates Showing results | — | — | — | — | Image | — | — | — | — | — |
| Additional Feature | — | — | — | — | — | ADDITIONAL OUTPUT VOLTAGE 3V ALSO AVAILABLE | — | — | — | — |
| Analog IC - Other Type | — | — | — | — | — | DC-DC REGULATED POWER SUPPLY MODULE | — | — | — | — |
| Control Mode | — | — | — | — | — | VOLTAGE-MODE | — | — | — | — |
| Input Voltage-Nom | — | — | — | — | — | 5 V | — | — | — | — |
| Output Current-Max | — | — | — | — | — | 0.09 A | — | — | — | — |
| Output Voltage-Max | — | — | — | — | — | 5.4 V | — | — | — | — |
| Output Voltage-Min | — | — | — | — | — | 4.7 V | — | — | — | — |
| Output Voltage-Nom | — | — | — | — | — | 5 V | — | — | — | — |
| Total Power Output-Max | — | — | — | — | — | 0.4 W | — | — | — | — |
| Trim/Adjustable Output | — | — | — | — | — | NO | — | — | — | — |
| Date Of Intro | — | — | — | — | — | — | 2020-06-04 | — | — | — |
| Amplifier Type | — | — | — | — | — | — | OPERATIONAL AMPLIFIER | — | — | — |
| Architecture | — | — | — | — | — | — | VOLTAGE-FEEDBACK | — | — | — |
| Average Bias Current-Max (IIB) | — | — | — | — | — | — | 0.002 µA | — | — | — |
| Bias Current-Max (IIB) @25C | — | — | — | — | — | — | 0.002 µA | — | — | — |
| Common-mode Reject Ratio-Min | — | — | — | — | — | — | 126 dB | — | — | — |
| Common-mode Reject Ratio-Nom | — | — | — | — | — | — | 140 dB | — | — | — |
| Frequency Compensation | — | — | — | — | — | — | YES | — | — | — |
| Input Offset Current-Max (IIO) | — | — | — | — | — | — | 0.001 µA | — | — | — |
| Input Offset Voltage-Max | — | — | — | — | — | — | 200 µV | — | — | — |
| Low-Bias | — | — | — | — | — | — | NO | — | — | — |
| Low-Offset | — | — | — | — | — | — | YES | — | — | — |
| Micropower | — | — | — | — | — | — | NO | — | — | — |
| Neg Supply Voltage Limit-Max | — | — | — | — | — | — | -20 V | — | — | — |
| Neg Supply Voltage-Nom (Vsup) | — | — | — | — | — | — | -2.5 V | — | — | — |
| Power | — | — | — | — | — | — | NO | — | — | — |
| Programmable Power | — | — | — | — | — | — | NO | — | — | — |
| Slew Rate-Nom | — | — | — | — | — | — | 15 V/us | — | — | — |
| Supply Current-Max | — | — | — | — | — | — | 1.2 mA | 0.003 mA | — | — |
| Supply Voltage Limit-Max | — | — | — | — | — | — | 20 V | — | — | — |
| Supply Voltage-Nom (Vsup) | — | — | — | — | — | — | 2.5 V | 5 V | — | — |
| Unity Gain BW-Nom | — | — | — | — | — | — | 7000 | — | — | — |
| Voltage Gain-Min | — | — | — | — | — | — | 562341.325 | — | — | — |
| Wideband | — | — | — | — | — | — | NO | — | — | — |
| ## OPA1637DGKT Alternates Showing results | — | — | — | — | — | — | Image | — | — | — |
| Clock Frequency-Max (fCLK) | — | — | — | — | — | — | — | 0.4 MHz | — | — |
| Data Retention Time-Min | — | — | — | — | — | — | — | 200 | — | — |
| Endurance | — | — | — | — | — | — | — | 1000000 Write/Erase Cycles | — | — |
| I2C Control Byte | — | — | — | — | — | — | — | 1010DDDR | — | — |
| Memory Density | — | — | — | — | — | — | — | 2048 bit | — | — |
| Memory IC Type | — | — | — | — | — | — | — | EEPROM | — | — |
| Memory Width | — | — | — | — | — | — | — | 8 | — | — |
| Number of Ports | — | — | — | — | — | — | — | 1 | — | — |
| Number of Words | — | — | — | — | — | — | — | 256 words | — | — |
| Number of Words Code | — | — | — | — | — | — | — | 256 | — | — |
| Operating Mode | — | — | — | — | — | — | — | SYNCHRONOUS | — | — |
| Organization | — | — | — | — | — | — | — | 256X8 | — | — |
| Output Characteristics | — | — | — | — | — | — | — | OPEN-DRAIN | — | — |
| Parallel/Serial | — | — | — | — | — | — | — | SERIAL | — | — |
| Programming Voltage | — | — | — | — | — | — | — | 5 V | — | — |
| Screening Level | — | — | — | — | — | — | — | TS 16949 | — | — |
| Serial Bus Type | — | — | — | — | — | — | — | I2C | — | — |
| Standby Current-Max | — | — | — | — | — | — | — | 0.000001 A | — | — |
| Supply Voltage-Max (Vsup) | — | — | — | — | — | — | — | 5.5 V | — | — |
| Supply Voltage-Min (Vsup) | — | — | — | — | — | — | — | 2.5 V | — | — |
| Write Cycle Time-Max (tWC) | — | — | — | — | — | — | — | 5 ms | — | — |
| Write Protection | — | — | — | — | — | — | — | HARDWARE | — | — |
| ## LD2981CM50TR Alternates Showing results | — | — | — | — | — | — | — | — | — | Image |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Quick Links
LP2981IM5-3.3/NOPBby Texas Instruments Fixed Positive LDO
Regulator, 3.3V, 0.375V Dropout, BIPolar, PDSO5
TPS76201DBVR
suggested
ADUM4160BRWZ
suggested
ADUM6000ARWZ
suggested
OPA1637DGKT
suggested
24LC025-I/ST
suggested
Why Look for Alternatives?
Finding alternatives for LD2981CM33TR 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 LD2981CM33TR 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 LD2981CM33TR?
Known equivalents for LD2981CM33TR include LP2981IM5-3.3/NOPB, LP2981-33DBVT, TPS76201DBVR. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of LD2981CM33TR?
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 LD2981CM33TR 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.