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LM2575HVS-12/NOPB
Texas Instruments
IC REG BUCK 12V 1A DDPAK
1456 Pcs New Original In Stock
Buck Switching Regulator IC Positive Fixed 12V 1 Output 1A TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
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5.0 / 5.0
- (365 Ratings)
LM2575HVS-12/NOPB
Product Overview
1318034
DiGi Electronics Part Number
LM2575HVS-12/NOPB-DGManufacturer
Texas Instruments
LM2575HVS-12/NOPB
Description
IC REG BUCK 12V 1A DDPAKInventory
1456 Pcs New Original In Stock
Buck Switching Regulator IC Positive Fixed 12V 1 Output 1A TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Quantity
Minimum 1
Minimum 1
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LM2575HVS-12/NOPB Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - DC DC Switching Regulators
Packaging
Tube
Series
SIMPLE SWITCHER®
Product Status
Active
Function
Step-Down
Output Configuration
Positive
Topology
Buck
Output Type
Fixed
Number of Outputs
1
Voltage - Input (Min)
4V
Voltage - Input (Max)
60V
Voltage - Output (Min/Fixed)
12V
Voltage - Output (Max)
-
Current - Output
1A
Frequency - Switching
52kHz
Synchronous Rectifier
No
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Supplier Device Package
TO-263 (DDPAK-5)
Base Product Number
LM2575
Datasheet & Documents
Manufacturer Product Page
LM2575HVS-12/NOPB Specifications
HTML Datasheet
LM2575HVS-12/NOPB-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
-LM2575HVS-12/NOPB-DG
NATNSCLM2575HVS-12/NOPB
2156-LM2575HVS-12/NOPB-TI
-LM2575HVS-12-NDR
*LM2575HVS-12/NOPB
LM2575HVS12NOPB
LM2575HVS-12-NDR
Standard Package
45
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
Je suis impressionné par l'assistance après-vente, ils prennent le temps de vraiment aider leurs clients.
de desembre 02, 2025
The reliable packaging from DiGi Electronics prevents any damage, and their pricing is highly attractive.
de desembre 02, 2025
DiGi Electronics offers affordable prices without compromising on quality—that’s impressive.
de desembre 02, 2025
The company's support staff are knowledgeable and resolve concerns efficiently.
de desembre 02, 2025
Easy to modify my cart before finalizing the purchase, thanks to the user-friendly design.
de desembre 02, 2025
Their customer support after purchase is one of the best I’ve experienced.
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Frequently Asked Questions (FAQ)
When designing a high-voltage input system, what are the critical considerations for selecting the LM2575HVS-12/NOPB to avoid potential thermal runaway, especially if input voltage fluctuates near its 60V maximum?
The LM2575HVS-12/NOPB's maximum input voltage of 60V is a key design parameter. When operating near this limit, especially with fluctuating input, it's crucial to accurately calculate the power dissipation. Even though the LM2575HVS-12/NOPB has built-in thermal protection, sustained operation at the edge of its voltage range can lead to excessive junction temperatures, potentially exceeding safe operating limits if cooling is inadequate. A conservative approach involves simulating worst-case scenarios, considering component tolerances and varying load conditions. Ensure proper heatsinking via the TO-263 package's thermal pad, and consider using a PCB with adequate copper pour for heat dissipation to mitigate thermal risks and ensure long-term reliability of the LM2575HVS-12/NOPB.
I need to replace an older switching regulator in an industrial control panel with the LM2575HVS-12/NOPB, but my original design used a different 12V, 1A buck regulator with a similar TO-220 package. What are the primary risks and design adjustments needed when migrating to the LM2575HVS-12/NOPB in its TO-263 (DDPAK-5) package?
Migrating to the LM2575HVS-12/NOPB from a TO-220 part requires careful attention to mounting and thermal management. The TO-263 (DDPAK-5) package of the LM2575HVS-12/NOPB offers superior thermal performance due to its exposed thermal pad designed for surface mounting with adequate copper. Ensure your PCB layout has a sufficient copper pad connected to the thermal pad of the LM2575HVS-12/NOPB for efficient heat sinking. Failing to do so can lead to overheating, even if the electrical specifications appear similar. Also, confirm that the external component selection (inductor, capacitors) is compatible with the LM2575HVS-12/NOPB's 52kHz switching frequency and ripple current requirements to maintain optimal performance and avoid circuit instability.
What is the safest de-rating strategy for the LM2575HVS-12/NOPB's 1A output current in a mission-critical, high-temperature automotive environment where the ambient temperature can reach 125°C, to prevent premature failure of the LM2575HVS-12/NOPB?
For mission-critical applications operating at high ambient temperatures like 125°C, de-rating the LM2575HVS-12/NOPB's 1A output current is essential. A prudent strategy would be to de-rate to approximately 60-70% of its rated current, meaning targeting a maximum continuous output of 600mA to 700mA. This significantly reduces the power dissipation and junction temperature of the LM2575HVS-12/NOPB, extending its operational lifespan and improving reliability. Coupled with effective heatsinking and a PCB layout optimized for thermal conductivity, this de-rating approach provides a robust solution for demanding automotive environments.
If my input voltage source for the LM2575HVS-12/NOPB is a noisy, unregulated DC-DC converter or a battery experiencing significant voltage sag, how can I best filter the input to prevent transients from exceeding the LM2575HVS-12/NOPB's 60V maximum rating and causing damage?
To protect the LM2575HVS-12/NOPB from input voltage transients and noise, particularly from unregulated or noisy sources, a robust input filtering network is crucial. Beyond the basic input capacitor, consider adding a series ferrite bead or a small inductor in conjunction with a larger bulk capacitor (e.g., electrolytic or tantalum) and a smaller ceramic bypass capacitor placed close to the LM2575HVS-12/NOPB's input pins. This multi-stage filtering helps attenuate high-frequency noise and slow down voltage spikes, preventing them from reaching the LM2575HVS-12/NOPB and potentially exceeding its 60V input limit. Careful selection of component values is necessary to avoid excessive voltage drop and maintain the regulator's stability.
I'm considering the LM2575HVS-12/NOPB for a new design, but also looking at a synchronous buck converter like the TPS561208 for potentially higher efficiency. What are the main trade-offs in terms of efficiency, component count, and board space when choosing the non-synchronous LM2575HVS-12/NOPB versus a more complex synchronous option like the TPS561208 for a 1A, 12V output application?
The choice between the non-synchronous LM2575HVS-12/NOPB and a synchronous converter like the TPS561208 involves significant trade-offs. The LM2575HVS-12/NOPB offers simplicity and a lower component count, typically requiring fewer external parts and thus reducing board space and assembly costs. Its ease of use makes it ideal for applications where absolute peak efficiency is not the primary driver. The TPS561208, being a synchronous converter, will generally offer higher efficiency, especially at lighter loads, due to the elimination of the diode forward voltage drop. However, this comes at the cost of increased complexity, potentially more external components (though often smaller), and a higher switching frequency which might require more careful layout to manage EMI. For a 1A, 12V output, if efficiency is paramount and board space allows, the synchronous option might be preferred. If cost, simplicity, and a robust, well-understood design are key, the LM2575HVS-12/NOPB remains a strong contender.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
LM2575HVS-12/NOPB CAD Models
Texas Instruments LM2575HVS-12/NOPB PCB symbols & footprints
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