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LM5008MM Buck Switching Regulator IC Equivalent & Substitute Parts
Part Overview
The LM5008MM is a buck switching regulator IC manufactured by Texas Instruments, designed for positive adjustable output applications. This device functions as a step-down converter with a fixed output of 2.5V and a maximum output current of 350mA. The part is currently in Last Time Buy status, indicating limited availability and the necessity to identify equivalent alternatives for ongoing design requirements and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LM5008MM |
| Function | Step-Down (Buck) |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 9.5V |
| Voltage - Input (Max) | 95V |
| Voltage - Output (Min/Fixed) | 2.5V |
| Voltage - Output (Max) | 75V |
| Current - Output | 350mA |
| Frequency - Switching | 50kHz ~ 600kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the LM5008MM is determined by strict equivalence across the following critical parameters:
- Functional Topology: Buck (step-down) switching regulator
- Output Configuration: Positive adjustable output
- Electrical Specifications: Input voltage range 9.5V to 95V, output voltage range 2.5V to 75V, output current 350mA
- Switching Frequency: 50kHz to 600kHz
- Package Compatibility: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Thermal Operating Range: -40°C to 125°C (TJ)
- Regulatory Compliance: ROHS3 Compliant, MSL Level 1
The LM5008MM/NOPB is identified as the manufacturer-recommended substitute. This part maintains identical electrical and mechanical specifications while differing only in product status and regulatory classification.
Parameter Comparison
| Parameter | LM5008MM | LM5008MM/NOPB |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Function | Step-Down | Step-Down |
| Output Configuration | Positive | Positive |
| Output Type | Adjustable | Adjustable |
| Number of Outputs | 1 | 1 |
| Voltage - Input (Min) | 9.5V | 9.5V |
| Voltage - Input (Max) | 95V | 95V |
| Voltage - Output (Min/Fixed) | 2.5V | 2.5V |
| Voltage - Output (Max) | 75V | 75V |
| Current - Output | 350mA | 350mA |
| Frequency - Switching | 50kHz ~ 600kHz | 50kHz ~ 600kHz |
| Synchronous Rectifier | No | No |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Last Time Buy | Not For New Designs |
| REACH Status | REACH Affected | REACH Unaffected |
Engineering Selection Recommendations
The LM5008MM/NOPB serves as the direct substitute for the LM5008MM. Both parts are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications. The primary distinction lies in product lifecycle status and regulatory classification.
The LM5008MM is designated Last Time Buy, indicating restricted availability. The LM5008MM/NOPB is classified as Not For New Designs, reflecting its position in the product lifecycle. However, both parts satisfy ROHS3 compliance and MSL Level 1 requirements.
Selection between these parts should be based on inventory availability and supply chain requirements. The LM5008MM/NOPB offers an alternative source when the primary part number reaches end-of-life conditions.
Frequently Asked Questions (FAQ)
Q: Are the LM5008MM and LM5008MM/NOPB electrically interchangeable?
A: Yes. Both parts maintain identical electrical specifications including input voltage range (9.5V to 95V), output voltage range (2.5V to 75V), output current (350mA), and switching frequency (50kHz to 600kHz).
Q: Can these parts be used interchangeably in PCB designs?
A: Yes. Both parts use the same package format (8-TSSOP, 8-MSOP with 0.118" width, 3.00mm) and mounting type (Surface Mount), ensuring direct PCB compatibility without layout modifications.
Q: What is the significance of the product status difference?
A: The LM5008MM is in Last Time Buy status, indicating limited production availability. The LM5008MM/NOPB is Not For New Designs, reflecting its position in the product lifecycle. Both designations indicate reduced availability compared to active production parts.
Q: Are there compliance differences between these parts?
A: The LM5008MM is REACH Affected, while the LM5008MM/NOPB is REACH Unaffected. Both maintain ROHS3 compliance and MSL Level 1 ratings. Compliance requirements should be verified against specific application and regional regulations.
Q: What is the thermal operating range for these regulators?
A: Both parts operate across a junction temperature range of -40°C to 125°C (TJ), suitable for industrial and commercial applications.
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