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LMR10510XMFE/NOPB
Texas Instruments
IC REG BUCK ADJ 1A SOT23-5
3715 Pcs New Original In Stock
Buck Switching Regulator IC Positive Adjustable 0.6V 1 Output 1A SC-74A, SOT-753
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5.0 / 5.0
- (449 Ratings)
LMR10510XMFE/NOPB
Product Overview
1300643
DiGi Electronics Part Number
LMR10510XMFE/NOPB-DGManufacturer
Texas Instruments
LMR10510XMFE/NOPB
Description
IC REG BUCK ADJ 1A SOT23-5Inventory
3715 Pcs New Original In Stock
Buck Switching Regulator IC Positive Adjustable 0.6V 1 Output 1A SC-74A, SOT-753
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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LMR10510XMFE/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
Adjustable
Number of Outputs
1
Voltage - Input (Min)
3V
Voltage - Input (Max)
5.5V
Voltage - Output (Min/Fixed)
0.6V
Voltage - Output (Max)
4.5V
Current - Output
1A
Frequency - Switching
1.6MHz
Synchronous Rectifier
No
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
SC-74A, SOT-753
Supplier Device Package
SOT-23-5
Base Product Number
LMR10510
Datasheet & Documents
HTML Datasheet
LMR10510XMFE/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
-LMR10510XMFE/NOPBCT
LMR10510XMFENOPB
LMR10510XMFE/NOPBDKR
-LMR10510XMFE-NDR
-LMR10510XMFE/NOPBCT-DG
LMR10510XMFE/NOPBTR
LMR10510XMFE/NOPBCT
Standard Package
250
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
가격 좋아서 가성비 최고이고, 서비스도 친절해서 추천하고 싶어요.
de desembre 02, 2025
The packaging for DiGi Electronics components is consistently secure and well-protected, ensuring safe delivery every time.
de desembre 02, 2025
Getting my components quickly has enabled me to keep my momentum going without delays.
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Frequently Asked Questions (FAQ)
What are the key design risks when using the LMR10510XMFE/NOPB in a space-constrained PCB layout with high-frequency noise sensitivity?
The LMR10510XMFE/NOPB operates at a fixed 1.6MHz switching frequency, which can couple noise into sensitive analog circuits if layout best practices aren't followed. Due to its small SOT-23-5 package and high di/dt switching loops, improper placement of the input capacitor, inductor, and feedback network can lead to excessive EMI, voltage ripple, or instability. To mitigate risk, place the input ceramic capacitor as close as possible to the VIN and GND pins, use a tight switch node loop, and avoid routing sensitive signals under the inductor or IC. A ground plane beneath the device is recommended, but ensure it doesn’t create parasitic capacitance that affects feedback stability. Poor layout may also cause thermal hotspots despite the low 1A output capability, especially near other heat-generating components.
Can the LMR10510XMFE/NOPB reliably replace the older LM2576 in a 5V-to-3.3V, 800mA industrial application, and what design changes are required?
While the LMR10510XMFE/NOPB offers higher efficiency and a smaller footprint than the LM2576, direct drop-in replacement is not advisable due to fundamental architectural differences. The LMR10510XMFE/NOPB is a non-synchronous buck converter with a 3V–5.5V input range, making it suitable for 5V systems, but it requires a Schottky diode (already internal in some reference designs) and careful output capacitor selection due to its 1.6MHz operation. Unlike the LM2576’s 52kHz switching frequency, the higher frequency demands low-ESR ceramic capacitors (e.g., X5R/X7R) for stability—electrolytics used with the LM2576 may cause instability. Additionally, the feedback voltage is 0.6V (vs. 1.23V on LM2576), so the resistor divider must be recalculated. Thermal performance is better, but verify junction temperature under load given the smaller package.
How does the absence of synchronous rectification in the LMR10510XMFE/NOPB impact efficiency and thermal performance in low-output-voltage applications like 0.8V core supplies?
The LMR10510XMFE/NOPB uses an internal N-channel MOSFET for the high-side switch but relies on an external Schottky diode for freewheeling current, which introduces conduction losses—especially at low output voltages like 0.8V where diode forward voltage drop becomes a significant portion of the output. This results in lower efficiency (typically 75–82% at 0.8V/500mA) compared to synchronous buck regulators like the TPS62130. The power dissipation increases junction temperature, which may require thermal vias or copper pours despite the SOT-23-5 package’s limited thermal mass. For battery-powered or thermally constrained designs, this trade-off between cost/size and efficiency should be evaluated; consider synchronous alternatives if >85% efficiency is required at light loads.
What reliability concerns should be considered when deploying the LMR10510XMFE/NOPB in automotive or industrial environments operating near -40°C or 125°C junction temperatures?
Although the LMR10510XMFE/NOPB is rated for -40°C to 125°C junction temperature, real-world reliability depends on derating and PCB thermal design. At high ambient temperatures (e.g., >85°C), the 1A output current must be derated due to increased RDS(on) and switching losses, potentially reducing effective capacity by 20–30%. Additionally, ceramic capacitors (especially X5R) can lose significant capacitance at low temperatures, risking output voltage overshoot or instability during cold starts. Ensure capacitor selection accounts for DC bias and temperature derating. The MSL-1 rating allows unlimited floor life, but in high-vibration environments (e.g., automotive under-hood), verify mechanical robustness of the SOT-23-5 package and solder joints. Long-term reliability also depends on avoiding repetitive overcurrent events, as the part lacks advanced protection features like hiccup-mode current limiting.
Is the LMR10510XMFE/NOPB a viable alternative to the MP2307DN for a 5V-to-1.8V, 1A point-of-load application, and what are the critical trade-offs?
The LMR10510XMFE/NOPB can serve as a functional alternative to the MP2307DN in a 5V-to-1.8V, 1A application, but with notable trade-offs. While both support similar input/output ranges, the MP2307DN is a synchronous buck converter with higher peak efficiency (~90% vs. ~80% for LMR10510XMFE/NOPB at 1.8V) and better light-load performance due to pulse-skipping mode. The LMR10510XMFE/NOPB’s fixed 1.6MHz frequency simplifies noise filtering but lacks efficiency optimization at light loads. Additionally, the MP2307DN includes integrated synchronous rectification, reducing BOM count and thermal stress. However, the LMR10510XMFE/NOPB offers superior noise predictability and lower cost in high-volume designs. If your system prioritizes efficiency and thermal performance under variable loads, the MP2307DN is preferable; if cost, simplicity, and noise control are critical, the LMR10510XMFE/NOPB is a solid choice—provided output capacitor selection and layout are optimized for stability.
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.
LMR10510XMFE/NOPB CAD Models
Texas Instruments LMR10510XMFE/NOPB PCB symbols & footprints
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