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LM22676MRX-5.0/NOPB
Texas Instruments
IC REG BUCK 5V 3A 8SOPWR
20145 Pcs New Original In Stock
Buck Switching Regulator IC Positive Fixed 5V 1 Output 3A 8-PowerSOIC (0.154", 3.90mm Width)
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5.0 / 5.0
- (335 Ratings)
LM22676MRX-5.0/NOPB
Product Overview
1359666
DiGi Electronics Part Number
LM22676MRX-5.0/NOPB-DGManufacturer
Texas Instruments
LM22676MRX-5.0/NOPB
Description
IC REG BUCK 5V 3A 8SOPWRInventory
20145 Pcs New Original In Stock
Buck Switching Regulator IC Positive Fixed 5V 1 Output 3A 8-PowerSOIC (0.154", 3.90mm Width)
Quantity
Minimum 1
Minimum 1
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LM22676MRX-5.0/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)
4.5V
Voltage - Input (Max)
42V
Voltage - Output (Min/Fixed)
5V
Voltage - Output (Max)
-
Current - Output
3A
Frequency - Switching
500kHz
Synchronous Rectifier
No
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
8-PowerSOIC (0.154", 3.90mm Width)
Supplier Device Package
8-SO PowerPad
Base Product Number
LM22676
Datasheet & Documents
Manufacturer Product Page
LM22676MRX-5.0/NOPB Specifications
HTML Datasheet
LM22676MRX-5.0/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
296-43596-2
LM22676MRX-5.0
296-43596-1
296-43596-6
LM22676MRX-5.0/NOPB-DG
LM22676MRX-5.0-DG
Standard Package
2,500
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
我很滿意這家店的商品品質，且價格非常具有競爭力，是理想的購物選擇。
de desembre 02, 2025
Ce que j'aime chez DiGi Electronics, c'est leur capacité à proposer une grande diversité de produits performants et innovants.
de desembre 02, 2025
価格の安さだけでなく、アフターケアも万全です。本当におすすめです。
de desembre 02, 2025
Their inventory reliability ensures we never face delays or shortages.
de desembre 02, 2025
Their packaging solutions are tailored to keep sensitive electronics safe from static, impact, and moisture.
de desembre 02, 2025
Affordable prices combined with excellent customer care make DiGi a top choice.
de desembre 02, 2025
DiGi Electronics consistently delivers on their promise of timely shipping and strong after-sales support.
de desembre 02, 2025
I am very satisfied with the long-lasting performance and careful packaging of my purchase.
de desembre 02, 2025
Customer feedback seems to be a priority for DiGi Electronics, which is commendable.
de desembre 02, 2025
Fast delivery times and proactive support create a trustworthy shopping environment.
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Frequently Asked Questions (FAQ)
How can I ensure thermal stability when using the LM22676MRX-5.0/NOPB in a high-temperature environment without active cooling?
To maintain thermal stability with the LM22676MRX-5.0/NOPB in high-temperature environments, optimize the PCB layout by using sufficient copper area for thermal dissipation, particularly connected to the PowerPad. TI recommends at least 2in² of copper for the VIN, PGND, and BOOT connections. Use multiple thermal vias under the PowerPad to transfer heat to internal or backside ground planes. Avoid placing heat-sensitive components nearby. With 3A load at high VIN (>12V), junction temperature can approach 125°C even at room temperature without proper heatsinking—consider derating load current or using forced airflow in enclosed systems to mitigate thermal runaway risk.
Can the LM22676MRX-5.0/NOPB replace the LM2676-5.0 in existing designs, and what are the critical differences to watch for?
Yes, the LM22676MRX-5.0/NOPB can generally replace the LM2677-5.0 or LM2678-5.0 in design-ins with caution. Key differences include higher switching frequency (500kHz vs 260kHz), which reduces inductor size but increases switching losses, and the LM22676's enhanced thermal performance via PowerSO-8 package. Ensure your input filter and output inductor are re-evaluated for higher frequency ripple. Also verify transient response under dynamic loads—faster switching may require damping adjustments in COUT ESR. The LM22676MRX-5.0/NOPB offers better efficiency above 12V VIN, but may be more susceptible to PCB layout parasitics due to faster edges.
What are the risks of using the LM22676MRX-5.0/NOPB near its minimum input voltage of 4.5V under full 3A load?
Operating the LM22676MRX-5.0/NOPB near 4.5V input with a 3A load risks output dropout and instability due to reduced duty cycle headroom—typical dropout is ~500mV but varies with load and temperature. At 4.5V VIN, the effective duty cycle approaches 90%, increasing conduction losses and reducing efficiency. This can lead to thermal issues under continuous load. Ensure input supply does not sag below 4.5V during transients (e.g., battery discharge or hot-plugging). Consider adding input capacitance (≥100μF low-ESR) close to VIN-PGND to handle surge currents and avoid premature shutdown or erratic regulation.
How should I select external components for the LM22676MRX-5.0/NOPB to minimize EMI in sensitive analog circuits?
To minimize EMI with the LM22676MRX-5.0/NOPB, use a shielded inductor with low radiated emissions (e.g., Würth 7440708330 or Coilcraft XGL4020-333), rated ≥4A saturation and low DCR. Place input ceramic capacitors (≥10μF, X7R, 1210 or larger) as close as possible to VIN and PGND pins to suppress high-frequency noise. Add a 100nF ceramic bypass capacitor in parallel with the feedback resistor divider. Use a small RC snubber (e.g., 10Ω + 100pF) across the catch diode (e.g., SB540) to damp switching ringing. Route high-current loops (VIN → inductor → catch diode → PGND) tightly and avoid routing sensitive analog traces underneath or adjacent to switching nodes.
Is the LM22676MRX-5.0/NOPB suitable for automotive load dump conditions where input voltage can spike transiently above 42V?
The LM22676MRX-5.0/NOPB has an absolute maximum input voltage of 42V, making it marginally suitable for mild automotive load dump scenarios if peak transients stay within this limit. However, typical load dump pulses (e.g., ISO 7637-2 Pulse 5a) can exceed 60V—using the LM22676MRX-5.0/NOPB directly in such environments without protection risks permanent damage. Always add a transient voltage suppression (TVS) diode (e.g., SMAJ43A) on the input rail, or use a pre-filter circuit like a Zener clamp or active protection IC (e.g., TI TPS2400). Derating the device below 36V nominal VIN adds robustness for long-term automotive reliability.
Quality Assurance (QC)
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LM22676MRX-5.0/NOPB CAD Models
Texas Instruments LM22676MRX-5.0/NOPB PCB symbols & footprints
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