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LM25007MMX/NOPB
Texas Instruments
IC REG BUCK ADJ 500MA 8VSSOP
20652 Pcs New Original In Stock
Buck Switching Regulator IC Positive Adjustable 2.5V 1 Output 500mA 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
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5.0 / 5.0
- (462 Ratings)
LM25007MMX/NOPB
Product Overview
1307754
DiGi Electronics Part Number
LM25007MMX/NOPB-DGManufacturer
Texas Instruments
LM25007MMX/NOPB
Description
IC REG BUCK ADJ 500MA 8VSSOPInventory
20652 Pcs New Original In Stock
Buck Switching Regulator IC Positive Adjustable 2.5V 1 Output 500mA 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Quantity
Minimum 1
Minimum 1
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LM25007MMX/NOPB Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - DC DC Switching Regulators
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Function
Step-Down
Output Configuration
Positive
Topology
Buck
Output Type
Adjustable
Number of Outputs
1
Voltage - Input (Min)
9V
Voltage - Input (Max)
42V
Voltage - Output (Min/Fixed)
2.5V
Voltage - Output (Max)
37V
Current - Output
500mA
Frequency - Switching
Up to 800kHz
Synchronous Rectifier
No
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package
8-VSSOP
Base Product Number
LM25007
Datasheet & Documents
Manufacturer Product Page
LM25007MMX/NOPB Specifications
HTML Datasheet
LM25007MMX/NOPB-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
296-LM25007MMX/NOPBDKR
296-LM25007MMX/NOPBCT
296-LM25007MMX/NOPBTR
LM25007MMX/NOPB-DG
Standard Package
3,500
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Their customer service team is genuinely friendly and very helpful during my visits.
de desembre 02, 2025
Their dedicated staff ensures a smooth and pleasant purchasing experience.
de desembre 02, 2025
The affordability of their products is a key reason I choose DiGi Electronics.
de desembre 02, 2025
DiGi Electronics’s stock levels are consistently high, allowing us to avoid supply chain disruptions.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the LM25007MMX/NOPB in a high-temperature industrial application, and how can thermal shutdown be avoided?
When designing with the LM25007MMX/NOPB in high-ambient-temperature environments (e.g., industrial controls or automotive underhood systems), the primary risk is exceeding the junction temperature limit of 125°C. Even though the device has thermal shutdown protection, frequent triggering degrades reliability. To mitigate this, ensure adequate PCB copper pour for heatsinking—use at least 1 in² of solid copper connected to the exposed pad (if present; note that LM25007MMX/NOPB does not have a thermal pad in 8-VSSOP), and minimize trace resistance in VIN and GND paths. Derate the maximum load current above 85°C ambient, and consider forced airflow or lowering switching frequency to reduce power loss. Always verify thermal performance under worst-case load and input conditions.
How does the LM25007MMX/NOPB compare to the LM2678-5.0 in terms of dropout voltage and load regulation when stepping down from 9V to 5V?
The LM25007MMX/NOPB offers a higher input voltage range (up to 42V vs 40V) but lacks synchronous rectification, resulting in higher dropout and poorer efficiency under light to medium loads compared to the LM2678-5.0. At 500mA load, the LM25007MMX/NOPB may drop out below 8V input when regulating to 5V due to its internal high-side switch RDS(on) and diode losses, while the LM2678-5.0 maintains regulation down to ~7.5V due to better efficiency. For fixed 5V outputs above 7.5V input, the LM2678-5.0 is preferred for better thermal performance. However, if adjustable output and >40V transient tolerance are needed, the LM25007MMX/NOPB provides greater design flexibility despite lower efficiency.
Can the LM25007MMX/NOPB replace the NCP3063 in a 12V to 3.3V, 400mA buck converter design without changing the PCB layout?
Replacing the NCP3063 with the LM25007MMX/NOPB in a 12V-to-3.3V design is not drop-in compatible and requires a PCB redesign. The NCP3063 typically uses external FETs and operates at lower frequencies (~100kHz), allowing through-hole inductors and larger footprints. The LM25007MMX/NOPB integrates the high-side switch and supports up to 800kHz operation, enabling smaller magnetics—but it comes in a surface-mount 8-VSSOP package, necessitating rework of layout and thermal vias. Additionally, the feedback reference voltage differs (2.5V for LM25007MMX/NOPB vs 1.25V for NCP3063), so the resistor divider must be recalculated. Maintain tight loop compensation and minimize hot-loop area to prevent EMI issues.
What are the reliability concerns when using the LM25007MMX/NOPB in an automotive 12V system with frequent load dump events up to 40V?
While the LM25007MMX/NOPB has a maximum input rating of 42V, repeated exposure to load dump transients near this limit—common in automotive 12V systems—increases long-term stress on the internal switch and reduces MTBF. Although it survives short-duration transients, lack of integrated transient voltage suppression (TVS) or foldback protection means external clamping (e.g., a transient-voltage-suppression diode rated at 45V) is strongly recommended. Also, ensure input capacitance is sufficient (≥10µF ceramic) and placed close to VIN-GND to absorb fast spikes. For enhanced reliability in harsh environments, consider adding a pre-filter stage or selecting industrial-grade variants with guardbanding, maintaining at least a 10% voltage margin below 42V.
How should feedback resistors be selected for stable output voltage adjustment in the LM25007MMX/NOPB, and what impact does divider current have on regulation accuracy?
For the LM25007MMX/NOPB, the feedback resistor divider should set the output voltage according to Vout = 2.5V × (1 + R1/R2), referencing its 2.5V internal feedback threshold. To minimize error from feedback pin bias current (<100nA), the divider current should exceed 1µA—preferably 5–10µA for stable regulation. Using high resistance values (e.g., R2=100kΩ) improves efficiency but increases noise susceptibility and settling time. Avoid values over 300kΩ total to prevent instability. Use 1% tolerance or better resistors, place them close to the FB pin, and route away from switching nodes. Poor layout or excessively high resistances can lead to output drift or oscillation under dynamic loads.
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LM25007MMX/NOPB CAD Models
Texas Instruments LM25007MMX/NOPB PCB symbols & footprints
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