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Texas Instruments LM2672M-5.0
- Part No.:
- LM2672M-5.0
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2672M-5.0.pdf
- Description:
- IC REG BUCK 5V 1A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,719
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Product details
Overview
LM2672M-5.0 from Texas Instruments is a monolithic step-down (buck) DC-DC switching regulator delivering 1-A output current with fixed 5-V output, ±1.5% output voltage tolerance over line and load, 260-kHz fixed-frequency operation, and up to 90% efficiency at 12-V input. It serves as a high-efficiency primary or preregulator in industrial power supplies and embedded systems requiring stable 5-V rail generation from 8–40-V inputs.
For engineers reviewing the LM2672M-5.0 datasheet, LM2672M-5.0 pinout, LM2672M-5.0 application, or LM2672M-5.0 equivalent, key selection considerations include its SOIC-8 package compatibility, internal DMOS switch with 0.3-Ω typical RDS(ON), TTL-compatible ON/OFF control with 50-μA standby current, and soft-start/synchronization capability for EMI-sensitive designs.
Technical Context
The LM2672M-5.0 integrates a DMOS power MOSFET switch, fixed 260-kHz PWM oscillator, internal frequency compensation, and feedback amplifier with 1.21-V reference. Its control architecture uses voltage-mode PWM with cycle-by-cycle current limiting and thermal shutdown-no external compensation required.
It operates across –40°C to +125°C junction temperature, supports input voltages from 6.5 V to 40 V, and delivers regulated 5-V output with dropout behavior defined by duty cycle limits (max 95%) and switch RDS(ON). Synchronization via the SYNC pin enables precise ripple frequency control above 260 kHz, while the CB pin drives the high-side gate using a bootstrap capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±1.5% over full line/load/temperature range-ensures stable logic rail without external resistor network. |
| Max Output Current | 1 A continuous-supports microcontroller cores, FPGAs, and peripheral ICs without derating at 25°C ambient. |
| Input Voltage Range | 6.5 V to 40 V-enables direct use with 12-V, 24-V, and 36-V industrial bus systems. |
| Switching Frequency | 260 kHz fixed-permits compact 47–68-μH inductors and reduces EMI compared to lower-frequency buck converters. |
| RDS(ON) | 0.3 Ω typical at 25°C-minimizes conduction loss and self-heating under 1-A load, enabling PCB copper trace heat sinking only. |
| Standby Current | 50 μA at TJ = 25°C-enables low-power shutdown mode for battery-backed or energy-conscious systems. |
| Efficiency | 90% at VIN = 12 V, IOUT = 1 A-reduces thermal load and improves system-level power density vs. linear regulators. |
Pinout & Package
LM2672M-5.0 is packaged in an 8-pin SOIC (D package), body size 5.00 mm × 6.20 mm, with exposed pad not present. Pin functions are validated per TI SNVS136L datasheet Rev L (June 2016).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CB) | Bootstrap capacitor connection | Connects 0.01-μF ceramic capacitor to VSW to elevate gate drive above VIN-critical for full enhancement of internal DMOS switch. |
| 2 (SS) | Soft-start timing node | Capacitor from SS to GND sets output voltage ramp time-prevents inrush current and stabilizes startup into large capacitive loads. |
| 3 (SYNC) | External clock synchronization input | Accepts TTL/CMOS clock >260 kHz to lock switching frequency-enables deterministic EMI filtering and multi-rail phase alignment. |
| 4 (FB) | Feedback sense input | Internally tied to 5-V output divider-no external resistors needed; floating or shorted to VOUT ensures regulation accuracy. |
| 5 (ON/OFF) | Enable/disable control input | TTL-compatible: ≥1.4 V enables regulator; ≤0.8 V disables with 50-μA quiescent draw-supports microcontroller GPIO control. |
| 6 (GND) | Power ground | Main return path for input/output capacitors and switch current-requires low-inductance layout to minimize noise coupling. |
| 7 (VIN) | Main power input | Accepts 6.5–40 V DC; connects to high-frequency bypass capacitor-shortest possible trace to CIN and GND is mandatory. |
| 8 (VSW) | Switch node output | Drives external inductor and Schottky catch diode-high dv/dt node requiring tight loop area to reduce radiated emissions. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated DMOS power switch | Eliminates external MOSFET and driver-reduces BOM count and layout complexity while maintaining 1-A capability. |
| Patented internal frequency compensation | Enables stable operation with standard 47–68-μH inductors and 47–68-μF output capacitors-no external compensation network required. |
| TTL shutdown with 50-μA standby | Allows seamless integration into low-power sleep modes without auxiliary circuitry-meets industrial watchdog and wake-on-event requirements. |
| Soft-start and sync capability | Prevents output overshoot during startup and enables synchronized switching across multiple rails-critical for noise-sensitive analog or RF subsystems. |
| Thermal shutdown + current limit protection | Provides fault recovery without external sensing-protects against sustained overload, short-circuit, and ambient overheating up to 150°C junction. |
Applications
| Industrial PLC Power Supply | Automotive Body Control Module |
|---|---|
Use Scenario: Generating clean 5-V rail from 24-V vehicle battery for MCU, CAN transceivers, and sensor interfaces under cold-crank (6.5-V) and load-dump (40-V) conditions. IC Role / Device Role / Timing Role: Primary buck regulator providing isolated, regulated 5-V supply with fast transient response to load steps from 10 mA to 1 A. Use Value: 90% efficiency minimizes heat buildup in sealed enclosures; ±1.5% tolerance ensures reliable digital logic operation across temperature extremes. | Use Scenario: Converting 12-V automotive battery to stable 5-V for infotainment microcontrollers and display drivers in dashboard electronics. IC Role / Device Role / Timing Role: High-reliability step-down converter with integrated protection-handles wide input variation and meets AEC-Q200 stress requirements when paired with automotive-grade passives. Use Value: 260-kHz fixed frequency simplifies EMI filter design; SYNC pin allows alignment with other switching rails to avoid beat frequencies. |
| Point-of-Load Converter for FPGA Boards | Industrial IoT Sensor Hub |
Use Scenario: Local 5-V supply for FPGA I/O banks and configuration memory on compact carrier boards powered from 24-V backplane. IC Role / Device Role / Timing Role: Compact, self-contained buck regulator with minimal external components-fits tight board space and avoids complex controller+MOSFET layouts. Use Value: SOIC-8 footprint enables easy routing; soft-start prevents FPGA configuration corruption during power-up sequencing. | Use Scenario: Powering ARM Cortex-M based sensor nodes with wireless modules (LoRa, NB-IoT) from 12–36-V field wiring. IC Role / Device Role / Timing Role: Primary DC-DC stage converting unregulated field voltage to 5-V for MCU, ADC, and RF front-end-operates continuously in harsh environments. Use Value: –40°C to +125°C rating ensures reliability in outdoor enclosures; thermal shutdown prevents failure during prolonged overloads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2576-5.0 | 52-kHz switching frequency, higher RDS(ON) (0.4 Ω), no SYNC or soft-start pins | Larger magnetics required; less suitable for EMI-constrained or fast-transient applications | Choose for cost-sensitive, non-EMI-critical 1-A designs where board space and efficiency are secondary. |
| TPS54202D | 2-A output, 400–2500-kHz adjustable frequency, integrated high-/low-side MOSFETs, smaller 8-pin SO-PowerPAD | Higher current, better light-load efficiency, but requires external compensation and more complex layout | Choose when scaling beyond 1 A or needing programmable frequency and enhanced thermal performance in space-constrained designs. |
Compared with LM2576-5.0, LM2672M-5.0 offers higher efficiency and tighter regulation at 260 kHz; versus TPS54202D, it trades higher current and flexibility for simpler implementation and proven robustness in legacy industrial designs.
Availability
LM2672M-5.0 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, FPGA power delivery, and IoT sensor hub applications requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for LM2672M-5.0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and power management technologies, with leadership in high-reliability industrial and automotive ICs.
The LM2672M-5.0 belongs to TI's SIMPLE SWITCHER® family-designed for ease of use in cost-sensitive, high-efficiency DC-DC conversion applications where minimal external components and proven layout independence are critical.
FAQ
What is the maximum input voltage rating for LM2672M-5.0?
The absolute maximum input voltage for LM2672M-5.0 is 45 V, but the recommended operating range is 6.5 V to 40 V per the datasheet. Operation above 40 V risks exceeding safe operating area limits and may trigger internal protection circuits. For sustained reliability in 36-V industrial systems, 40 V represents the practical upper limit with margin.
Does LM2672M-5.0 require external feedback resistors to set its output voltage?
No, LM2672M-5.0 does not require external feedback resistors. As a fixed-output variant, it contains internal precision resistor dividers calibrated for 5.0 V ±1.5% regulation. The FB pin is internally connected to the output divider-simply tie FB directly to the output capacitor for proper operation, unlike the adjustable LM2672MX version.
Can LM2672M-5.0 synchronize to an external clock signal?
Yes, LM2672M-5.0 supports external clock synchronization via the SYNC pin. When driven with a TTL/CMOS-compatible signal above 260 kHz (e.g., 400 kHz), the internal oscillator locks to the external frequency. This feature enables EMI reduction through frequency spreading or deterministic ripple placement-critical in communication and medical equipment designs using LM2672M-5.0.
What thermal management is required for LM2672M-5.0 at full 1-A load?
At full 1-A load and 12-V input, LM2672M-5.0 dissipates approximately 0.7 W. With its SOIC-8 package RθJA of 105°C/W, this yields ~74°C rise above ambient-well within the 125°C max junction limit. TI specifies that PCB copper traces serve as sufficient heatsinking; no external heatsink or thermal pad is required if minimum copper area guidelines (≥1 in² per GND/VIN pin) are followed.
Is LM2672M-5.0 RoHS compliant and halogen-free?
Yes, LM2672M-5.0 is RoHS compliant and halogen-free per Texas Instruments' official product change notices and material declarations. The SOIC-8 package uses lead-free matte tin plating and meets JEDEC J-STD-609A Class 1 moisture sensitivity level (MSL-1), supporting standard reflow profiles without baking.
LM2672M-5.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM2672M-5.0 FAQ
1.How can I place an order for LM2672M-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2672M-5.0 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM2672M-5.0 reliable?
The price and inventory of LM2672M-5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2672M-5.0 is usually 5 days.
3.What payment methods are accepted for LM2672M-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2672M-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2672M-5.0?
LM2672M-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2672M-5.0 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM2672M-5.0?
For technical support, including LM2672M-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2672M-5.0 requirements.
6.How does Aetrix verify that LM2672M-5.0 is sourced from the original manufacturer or authorized distributors?
All LM2672M-5.0 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM2672M-5.0 meets industry standards.
7.What is the process for return or replacement of LM2672M-5.0?
All LM2672M-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM2672M-5.0, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM2672M-5.0 part is unused and in its original packaging.
Return procedure for LM2672M-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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