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LP2952AIM/NOPB Equivalent & Substitute Parts
Part Overview
The LP2952AIM/NOPB is a linear voltage regulator IC from Texas Instruments designed for positive adjustable (fixed) output applications. This Surface Mount device delivers 250mA output current in a 16-SOIC package and operates across an input voltage range of up to 30V with output adjustability from 1.23V to 29V. The part is currently Active in product status with 978 pieces in stock. Equivalent and substitute parts are identified based on matching electrical specifications, package configuration, and functional characteristics to support design flexibility and supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | LP2952AIM/NOPB |
| Manufacturer | Texas Instruments |
| Category | Power Management (PMIC) |
| Output Configuration | Positive |
| Output Type | Adjustable (Fixed) |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 30V |
| Voltage - Output (Min/Fixed) | 1.23V (5V) |
| Voltage - Output (Max) | 29V |
| Current - Output | 250mA |
| Voltage Dropout (Max) | 0.8V @ 250mA |
| Current - Quiescent (Iq) | 170 µA |
| Current - Supply (Max) | 33 mA |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature, Reverse Polarity |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the LP2952AIM/NOPB are identified based on the following critical parameters that determine functional equivalence:
- Output Configuration: Positive
- Output Type: Adjustable (Fixed)
- Number of Regulators: 1
- Voltage - Input (Max): 30V
- Voltage - Output Range: 1.23V to 29V
- Current - Output: 250mA
- Voltage Dropout: 0.8V @ 250mA
- Current - Quiescent (Iq): 170 µA
- Control Features: Enable
- Protection Features: Over Current, Over Temperature, Reverse Polarity
- Operating Temperature: -40°C ~ 125°C
- Package / Case: 16-SOIC (0.154", 3.90mm Width)
All identified substitute parts maintain these core electrical and mechanical specifications. Variations in packaging format (Bulk vs. Tape & Reel), manufacturer designation, and compliance certifications are noted but do not affect functional interchangeability in circuit design.
Parameter Comparison
| Part Number | Manufacturer | Packaging | Output Current | Voltage Dropout @ 250mA | Quiescent Current | Operating Temp | RoHS Status | Inventory |
|---|---|---|---|---|---|---|---|---|
| LP2952AIM/NOPB | Texas Instruments | Bulk | 250mA | 0.8V | 170 µA | -40°C ~ 125°C | ROHS3 Compliant | 978 Pcs |
| LP2952AIMX/NOPB | Texas Instruments | Tape & Reel (TR) | 250mA | 0.8V | 170 µA | -40°C ~ 125°C | ROHS3 Compliant | 5300 Pcs |
| LP2952AIM | National Semiconductor | - | 250mA | 0.6V @ 100mA | 170 µA | -40°C ~ 125°C (TJ) | RoHS non-compliant | 4033 Pcs |
| LP2952AIM-TI | Texas Instruments | Bulk | 250mA | 0.8V | 170 µA | -40°C ~ 125°C | RoHS non-compliant | 5026 Pcs |
| LP2952IM | National Semiconductor | Bulk | 250mA | 0.8V | 170 µA | -40°C ~ 125°C | RoHS non-compliant | 2478 Pcs |
| LP2952IM-TI | Texas Instruments | Bulk | 250mA | 0.8V | 170 µA | -40°C ~ 125°C | RoHS non-compliant | 7070 Pcs |
| LP2953IM | National Semiconductor | - | 250mA | 0.8V | 170 µA | -40°C ~ 125°C | RoHS non-compliant | 2200 Pcs |
| LP2953IM/NOPB | National Semiconductor | Bulk | 250mA | 0.8V | 170 µA | -40°C ~ 125°C | RoHS non-compliant | 1012 Pcs |
Engineering Selection Recommendations
Primary Equivalent (Highest Compliance Match): LP2952AIMX/NOPB from Texas Instruments is the direct equivalent with identical electrical specifications and ROHS3 compliance matching the main part. The only difference is packaging format (Tape & Reel vs. Bulk), which affects procurement and handling but not circuit performance. This part offers the highest inventory availability at 5300 pieces.
Secondary Equivalents (Texas Instruments, RoHS Non-Compliant): LP2952AIM-TI and LP2952IM-TI maintain all electrical specifications and are manufactured by Texas Instruments. These parts are RoHS non-compliant but suitable for applications where RoHS3 certification is not required. LP2952IM-TI offers the highest inventory among Texas Instruments alternatives at 7070 pieces.
National Semiconductor Alternatives: LP2952AIM, LP2952IM, LP2953IM, and LP2953IM/NOPB from National Semiconductor provide functional equivalence with matching electrical performance. All are RoHS non-compliant. LP2952AIM shows a voltage dropout specification of 0.6V @ 100mA (versus 0.8V @ 250mA for the main part), which represents improved performance at lower current levels. These parts are suitable for designs where manufacturer source flexibility is required.
Compliance Considerations: If RoHS3 compliance is mandatory, LP2952AIMX/NOPB is the only certified substitute. For applications without RoHS requirements, all listed alternatives are electrically interchangeable.
Frequently Asked Questions (FAQ)
Q: Can LP2952AIMX/NOPB replace LP2952AIM/NOPB directly? A: Yes. LP2952AIMX/NOPB is a direct parametric equivalent with identical electrical specifications, output current, voltage dropout, and operating temperature range. The difference is packaging format (Tape & Reel vs. Bulk), which does not affect circuit functionality.
Q: What is the difference between LP2952 and LP2953 series parts? A: Both LP2952 and LP2953 variants listed maintain identical electrical specifications for this application. The base product number difference reflects design revision or manufacturer designation but does not alter functional performance in the 16-SOIC package configuration.
Q: Are National Semiconductor parts compatible with Texas Instruments designs? A: Yes. National Semiconductor LP2952 and LP2953 variants maintain the same electrical specifications, output current (250mA), voltage dropout (0.8V @ 250mA), quiescent current (170 µA), and 16-SOIC package. They are functionally interchangeable in circuit design.
Q: Does the voltage dropout specification difference in LP2952AIM matter? A: LP2952AIM specifies 0.6V @ 100mA versus 0.8V @ 250mA for the main part. This represents performance at different load currents. At full 250mA output, dropout performance is equivalent. The 0.6V specification at lower current indicates improved efficiency at reduced loads.
Q: Which substitute part has the best inventory availability? A: LP2952IM-TI from Texas Instruments has the highest inventory at 7070 pieces, followed by LP2952AIMX/NOPB at 5300 pieces.
Q: Is RoHS compliance important for my application? A: If your design or end-product requires RoHS3 certification, use LP2952AIMX/NOPB or LP2952AIM/NOPB. All other listed substitutes are RoHS non-compliant. Verify your application requirements before selection.
Q: Can I mix packaging formats (Bulk vs. Tape & Reel) in production? A: Electrically, yes. However, Tape & Reel packaging (LP2952AIMX/NOPB) is optimized for automated assembly, while Bulk packaging is suitable for manual or mixed-volume operations. Confirm your assembly process requirements before substitution.
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