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LM2675MX-12/NOPB
Texas Instruments
IC REG BUCK 12V 1A 8SOIC
10350 Pcs New Original In Stock
Buck Switching Regulator IC Positive Fixed 12V 1 Output 1A 8-SOIC (0.154", 3.90mm Width)
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5.0 / 5.0
- (310 Ratings)
LM2675MX-12/NOPB
Product Overview
1310946
DiGi Electronics Part Number
LM2675MX-12/NOPB-DGManufacturer
Texas Instruments
LM2675MX-12/NOPB
Description
IC REG BUCK 12V 1A 8SOICInventory
10350 Pcs New Original In Stock
Buck Switching Regulator IC Positive Fixed 12V 1 Output 1A 8-SOIC (0.154", 3.90mm Width)
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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LM2675MX-12/NOPB Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - DC DC Switching Regulators
Packaging
Cut Tape (CT) & Digi-Reel®
Series
SIMPLE SWITCHER®
Product Status
Active
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)
12V
Voltage - Output (Max)
-
Current - Output
1A
Frequency - Switching
260kHz
Synchronous Rectifier
No
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Supplier Device Package
8-SOIC
Base Product Number
LM2675
Datasheet & Documents
Manufacturer Product Page
LM2675MX-12/NOPB Specifications
HTML Datasheet
LM2675MX-12/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
296-35410-2
LM2675MX-12/NOPB-DG
LM2675MX-12-NDR
LM2675MX12NOPB
296-35410-6
*LM2675MX-12/NOPB
296-35410-1
Standard Package
2,500
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
모든 구매 과정에서 가격 우위와 서비스가 최고였습니다. 매우 만족스러워요.
de desembre 02, 2025
Ich habe bisher kaum eine bessere Lieferungserfahrung gemacht, sowohl bei Pünktlichkeit als auch bei Produktqualität.
de desembre 02, 2025
DiGi Electronics’ online platform loads quickly and is visually appealing, enhancing the overall shopping experience.
de desembre 02, 2025
Thanks to their transparent pricing, I never encountered any surprises at checkout.
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Frequently Asked Questions (FAQ)
What are the key design risks when using the LM2675MX-12/NOPB in high-vibration industrial environments, and how can layout and component selection mitigate them?
The LM2675MX-12/NOPB’s 8-SOIC package and external inductor are susceptible to mechanical stress in high-vibration settings. Poor PCB mounting or inadequate solder fillets can lead to fatigue failures over time. To mitigate this, use a rigid PCB substrate, secure the inductor with adhesive if necessary, and ensure the 8-SOIC footprint follows TI’s recommended pad geometry with thermal vias for stress distribution. Additionally, select inductors rated for automotive or industrial vibration standards (e.g., AEC-Q200) and avoid placing the device near board edges or connectors where flexure is highest.
Can the LM2675MX-12/NOPB safely replace an LM2596-12 in a 24V-to-12V automotive application, and what trade-offs should I expect?
While both the LM2675MX-12/NOPB and LM2596-12 are 12V fixed-output buck regulators, direct replacement isn’t risk-free. The LM2675MX-12/NOPB has a lower max input voltage (40V vs. 45V for LM2596), so transient spikes above 40V—common in automotive load-dump scenarios—could damage it. Also, the LM2675 operates at 260kHz (vs. 150kHz for LM2596), allowing smaller output capacitors but increasing EMI. If replacing, add a TVS diode rated for ISO 7637-2 transients and verify thermal performance under full load, as the LM2675’s SOIC package has higher thermal resistance than the TO-220 typically used with LM2596.
How does the absence of synchronous rectification in the LM2675MX-12/NOPB impact efficiency at light loads, and what design choices can compensate for this limitation?
The LM2675MX-12/NOPB uses a diode-based output stage, which results in higher conduction losses at light loads compared to synchronous buck converters like the TPS54302. This leads to reduced efficiency below 200mA, making it less ideal for always-on IoT or sensor nodes. To mitigate, consider adding a small preload resistor to maintain minimum current, or use pulse-skipping mode-compatible feedback techniques. However, for applications requiring high light-load efficiency, evaluate alternatives such as the LM5164 or TPS562200, which offer synchronous rectification and better standby performance.
What layout practices are critical to avoid instability when designing with the LM2675MX-12/NOPB in space-constrained PCBs with long input traces?
Long input traces increase parasitic inductance, which can cause voltage ringing and instability in the LM2675MX-12/NOPB due to its fixed-frequency hysteretic control. Keep the input capacitor (CIN) within 5mm of the VIN and GND pins, using a low-ESR ceramic type (e.g., 10µF X7R). Route SW node traces short and wide to minimize EMI and coupling. Avoid running sensitive analog lines (like FB) near the SW node. If space forces compromises, add a small RC snubber across the diode to dampen ringing, but verify loop stability with a transient load test using a electronic load or step-response analyzer.
Is the LM2675MX-12/NOPB suitable for 24/7 operation in outdoor telecom enclosures where ambient temperatures reach 60°C, and how should derating be applied?
Yes, but with careful thermal derating. The LM2675MX-12/NOPB is rated for -40°C to 125°C junction temperature, but at 60°C ambient and 1A output from 24V input, power dissipation can exceed 1.5W, pushing TJ close to limits in an 8-SOIC without a heatsink. Use a 4-layer PCB with internal ground planes connected to the exposed pad via multiple vias to improve heat spreading. Derate output current by 20% above 50°C ambient, or consider forced airflow. For mission-critical outdoor use, validate thermal performance with IR imaging under worst-case conditions, and consider the LM2678 (in TO-220) for higher reliability in extreme environments.
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.
LM2675MX-12/NOPB CAD Models
Texas Instruments LM2675MX-12/NOPB PCB symbols & footprints
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