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LM2675N-5.0
Texas Instruments
IC REG BUCK 5V 1A 8DIP
66099 Pcs New Original In Stock
Buck Switching Regulator IC Positive Fixed 5V 1 Output 1A 8-DIP (0.300", 7.62mm)
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5.0 / 5.0
- (475 Ratings)
LM2675N-5.0
Product Overview
1353743
DiGi Electronics Part Number
LM2675N-5.0-DGManufacturer
Texas Instruments
LM2675N-5.0
Description
IC REG BUCK 5V 1A 8DIPInventory
66099 Pcs New Original In Stock
Buck Switching Regulator IC Positive Fixed 5V 1 Output 1A 8-DIP (0.300", 7.62mm)
Quantity
Minimum 1
Minimum 1
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LM2675N-5.0 Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - DC DC Switching Regulators
Packaging
-
Series
SIMPLE SWITCHER®
Product Status
Obsolete
Function
Step-Down
Output Configuration
Positive
Topology
Buck
Output Type
Fixed
Number of Outputs
1
Voltage - Input (Min)
6.5V
Voltage - Input (Max)
40V
Voltage - Output (Min/Fixed)
5V
Voltage - Output (Max)
-
Current - Output
1A
Frequency - Switching
260kHz
Synchronous Rectifier
No
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Supplier Device Package
8-PDIP
Base Product Number
LM2675
Datasheet & Documents
HTML Datasheet
LM2675N-5.0-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
2156-LM2675N-5.0-TI
TEXTISLM2675N-5.0
Standard Package
40
Alternative Parts
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DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Umweltbewusst und günstiger sind bei DiGi Electronics keine Gegensätze. Ich bin sehr zufrieden.
de desembre 02, 2025
常に迅速なレスポンスと丁寧な対応で、気持ちよく買い物できました。
de desembre 02, 2025
The support staff was very friendly and made me feel comfortable throughout my purchase.
de desembre 02, 2025
Fast shipping once again; I received my order in just a couple of days.
de desembre 02, 2025
DiGi Electronics is my go-to company for dependable and friendly service.
de desembre 02, 2025
Outstanding value combined with a clean, easy-to-navigate website.
de desembre 02, 2025
Their after-sales support demonstrates real care for customers.
de desembre 02, 2025
I value their honest pricing approach and commitment to customer satisfaction.
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Frequently Asked Questions (FAQ)
Can the LM2675N-5.0 be used in new designs given its obsolete status, and what are the long-term supply chain risks?
The LM2675N-5.0 is listed as obsolete by Texas Instruments, meaning it's no longer recommended for new designs due to long-term availability risks. While 66,080 units are currently in stock, future production is not guaranteed. For new designs, consider alternatives like the LM2675N-5.0/NOPB (pin-compatible, Pb-free) or modern drop-in replacements such as the NCV51411DR2G, which offers similar step-down performance with improved efficiency and ongoing manufacturer support. Designers should assess lifetime buy requirements and evaluate second-source options to mitigate obsolescence-related discontinuities in production.
What are the key thermal design considerations when operating the LM2675N-5.0 at full 1A load in a high ambient temperature environment?
Operating the LM2675N-5.0 at its maximum 1A output in environments approaching 125°C junction temperature requires careful PCB thermal management. Since the device lacks synchronous rectification, conduction and switching losses increase thermal stress. Use a minimum 1 in² copper area with thermal vias to ground planes for effective heat dissipation. In enclosed or sealed systems, consider derating current to 700mA or adding forced airflow. Monitor TJ under worst-case line and load conditions to prevent thermal shutdown or long-term reliability degradation.
How does the LM2675N-5.0 compare to modern synchronous buck regulators like the TPS54331 in terms of efficiency and external component count?
Compared to modern synchronous buck regulators such as the TPS54331, the LM2675N-5.0 exhibits lower efficiency—especially at light loads—due to its non-synchronous design that uses a catch diode instead of an internal FET. This increases power loss and thermal load. The LM2675N-5.0 also requires a Schottky diode (e.g., 1N5822), whereas the TPS54331 integrates MOSFETs, reducing external component count and board space. For designs prioritizing efficiency, thermal performance, and footprint, upgrading to a synchronous alternative like the TPS54331 is advisable despite higher initial cost.
Is the LM2675N-5.0 suitable for automotive applications given its operating temperature range and RoHS compliance?
The LM2675N-5.0 supports a junction temperature range of -40°C to 125°C, making it thermally suitable for most automotive environments. However, it is marked as RoHS non-compliant due to lead content, which may conflict with modern automotive environmental standards (e.g., ELV Directive). For automotive designs requiring long-term compliance and reliability, consider the LM2675N-5.0/NOPB (lead-free variant) or the AEC-Q100 qualified NCV51411DR2G, which is specifically designed for automotive use and meets RoHS and REACH requirements. Always validate against system-level certification needs.
What are the risks of using the LM2675N-5.0 in an input voltage scenario where supply occasionally dips to 6V?
The LM2675N-5.0 has a minimum input voltage of 6.5V for reliable 5V fixed output regulation. Operating below this threshold—such as at 6V—can cause the regulator to drop out, resulting in unstable output voltage and potential system reset or malfunction. In battery-powered or brownout-prone systems, this margin is critical. To mitigate risk, either ensure the input never falls below 6.5V or consider a buck-boost regulator alternative such as the TPS63020, which maintains 5V output even when input dips below the nominal output voltage.
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.
LM2675N-5.0 CAD Models
Texas Instruments LM2675N-5.0 PCB symbols & footprints
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