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Texas Instruments LM22672QMRE-5.0/NOPB
- Part No.:
- LM22672QMRE-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM22672QMRE-5.0/NOPB.pdf
- Description:
- IC REG BUCK 5V 1A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:420
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Product details
Overview
LM22672QMRE-5.0/NOPB from Texas Instruments is a 42-V, 1-A synchronous step-down DC/DC regulator with fixed 5.0 V output, 500 kHz switching frequency, ±1.5% feedback reference accuracy, and integrated 200 mΩ N-channel MOSFET. It operates across –40°C to +125°C junction temperature and supports industrial power conversion from 12 V or 24 V rails.
For engineers reviewing the LM22672QMRE-5.0/NOPB datasheet, LM22672QMRE-5.0/NOPB pinout, LM22672QMRE-5.0/NOPB application, or LM22672QMRE-5.0/NOPB equivalent, key selection criteria include input voltage range (4.5–42 V), thermal performance in HSOP-8 PowerPAD, soft-start programmability via SS pin, and synchronization capability via RT/SYNC.
Technical Context
The LM22672QMRE-5.0/NOPB implements voltage-mode PWM control with input voltage feedforward for stable loop gain across wide VIN variations. Its internally compensated Type III compensation network is optimized for fixed 5 V output and ceramic output capacitors.
It integrates a bootstrap diode and gate driver for high-side N-MOSFET operation, requires external BOOT-SW capacitor (10 nF ceramic), and supports three oscillator modes: internal 500 kHz default, resistor-adjustable (200 kHz–1 MHz), or external synchronization (up to 1 MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±1.5% (4.925–5.075 V) over full temperature and line range |
| Input Voltage Range | 4.5 V to 42 V - supports direct regulation from 12 V/24 V industrial rails and automotive battery transients |
| Switching Frequency | 500 kHz typical (400–600 kHz over temp); adjustable 200 kHz–1 MHz or synchronizable up to 1 MHz |
| Max Output Current | 1 A continuous - limited by internal 200 mΩ N-MOSFET RDS(on) and thermal design in HSOP-8 PowerPAD |
| Quiescent Current | 3.4 mA typical at VOUT = 5 V - enables low-power standby without external bias supply |
| Enable Threshold | 1.6 V typical falling threshold with 0.6 V hysteresis - allows precise sequencing and external UVLO implementation |
| Junction Temp Range | –40°C to +125°C - qualified for extended industrial and automotive-grade operation |
Pinout & Package
LM22672QMRE-5.0/NOPB uses an HSOP-8 package (4.89 mm × 3.90 mm) with exposed thermal pad (EP) that must be soldered to PCB ground for thermal management and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply input | Provides gate drive voltage for internal high-side N-MOSFET; requires 10 nF ceramic capacitor between BOOT and SW |
| EN | Enable control input | Active-high logic input; 1.6 V threshold with 0.6 V hysteresis enables precise power sequencing and external UVLO |
| SW | Switch node output | Drives external inductor; swings from ~0 V to VIN; connects directly to BOOT capacitor and external diode/FET |
| FB | Feedback reference input | Internally tied to 5.0 V reference; no external divider required for fixed-output configuration |
| GND | Power and signal ground | System return path; EP (exposed pad) must be connected to GND for thermal and EMI performance |
| RT/SYNC | Oscillator mode control | Selects internal 500 kHz, resistor-adjustable, or external sync mode; latched at startup based on pin voltage |
| SS | Soft-start timing input | Sinks 50 µA current; external capacitor sets ramp time (e.g., 100 nF ≈ 500 µs, 1 µF ≈ 5 ms) |
| VIN | Main power input | Supplies internal LDO, gate driver, and control circuitry; accepts 4.5–42 V with transient tolerance |
Key Features
| Feature | Design Value |
|---|---|
| Integrated boot-strap diode | Eliminates external diode requirement and reduces BOM count while enabling efficient high-side gate drive |
| Stable with ceramic capacitors | Internal compensation ensures stability using low-ESR ceramic output caps - no electrolytic or tantalum needed |
| Adjustable soft-start | Single external capacitor on SS pin controls output voltage ramp rate, limiting inrush current into downstream loads |
| Precision enable with UVLO | EN pin provides both on/off control and configurable undervoltage lockout - prevents operation below safe input thresholds |
| Thermal shutdown & current limit | 150°C junction shutdown and 1.3–1.7 A peak current limit protect against overload, short-circuit, and thermal runaway |
Applications
| Industrial PLC I/O Power | Automotive Body Control Module |
|---|---|
Use Scenario: Regulating 24 V battery rail to 5 V for microcontroller, CAN transceivers, and sensor interfaces in harsh environments. IC Role / Device Role / Timing Role: Primary 5 V point-of-load regulator with thermal robustness and transient immunity. Use Value: Delivers 1 A at 5 V with <1.5% output error across –40°C to +125°C, meeting AEC-Q100 Grade 1 requirements. | Use Scenario: Powering infotainment system peripherals including USB hubs and display controllers from 12 V vehicle bus. IC Role / Device Role / Timing Role: Fixed-output buck converter providing clean, sequenced 5 V supply with EN-controlled startup. Use Value: Enables reliable cold-crank operation down to 4.5 V input and withstands load-dump transients up to 42 V. |
| Telecom Remote Radio Unit | Embedded Edge Gateway |
Use Scenario: Converting 48 V backplane supply to isolated 5 V for FPGA configuration and interface logic in outdoor base stations. IC Role / Device Role / Timing Role: High-input-voltage step-down regulator supporting remote monitoring and fault reporting via EN/SS pins. Use Value: 500 kHz switching enables compact magnetics; RT/SYNC pin allows EMI reduction through frequency coordination. | Use Scenario: Providing main 5 V rail for ARM-based gateway SoC, Ethernet PHY, and wireless modules in smart infrastructure nodes. IC Role / Device Role / Timing Role: Primary system regulator with soft-start and thermal protection for unattended field deployment. Use Value: Integrated loop compensation eliminates tuning effort; exposed pad ensures thermal reliability under sustained 1 A load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM22670MR-5.0/NOPB | Same pinout, same 5 V output, but 3 V minimum input (vs. 4.5 V) and lower 36 V max input (vs. 42 V) | Limited to lower-voltage systems; not suitable for 24 V industrial or automotive transients | Choose when input never exceeds 36 V and minimum start-up voltage is ≤3 V |
| TPS54302DDCR | 3.5–28 V input, 3 A output, 2.2 MHz switching, no integrated bootstrap diode | Higher current, higher frequency, but requires external bootstrap diode and more complex layout | Choose for space-constrained designs needing >1 A or faster transient response, accepting added component count |
Compared with LM22672QMRE-5.0/NOPB, LM22670MR-5.0/NOPB trades input voltage range for lower start-up voltage, while TPS54302DDCR offers higher current and frequency at the cost of external bootstrap support and reduced HV robustness.
Availability
LM22672QMRE-5.0/NOPB is available at Aetrix Electronics and suitable for industrial control, automotive body electronics, and telecom power conversion requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for LM22672QMRE-5.0/NOPB 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 leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The LM22672 product line delivers SIMPLE SWITCHER® buck regulators with integrated high-side FETs, designed for rugged, low-component-count DC/DC conversion in harsh environments.
FAQ
What is the maximum input voltage rating for LM22672QMRE-5.0/NOPB?
The absolute maximum input voltage for LM22672QMRE-5.0/NOPB is 43 V, with recommended operating range from 4.5 V to 42 V. This allows reliable operation across automotive load-dump transients and industrial 24 V rail variations. The device maintains regulation and thermal safety within this range when used with proper PCB copper area on the exposed pad.
Does LM22672QMRE-5.0/NOPB require an external feedback resistor divider?
No, LM22672QMRE-5.0/NOPB does not require an external feedback resistor divider because it features a factory-trimmed internal 5.0 V reference connected directly to the FB pin. This simplifies design, improves accuracy (±1.5%), and eliminates resistor tolerance and drift errors inherent in external dividers.
How is thermal performance managed in LM22672QMRE-5.0/NOPB?
LM22672QMRE-5.0/NOPB uses an HSOP-8 PowerPAD package with an exposed thermal pad (EP) that must be soldered to a minimum 1-inch² copper pour connected to GND. With this layout, its junction-to-ambient thermal resistance (RθJA) is 60°C/W, enabling 1 A continuous operation at +125°C ambient when properly heatsinked.
Can LM22672QMRE-5.0/NOPB synchronize to an external clock?
Yes, LM22672QMRE-5.0/NOPB can synchronize to an external clock applied to the RT/SYNC pin. The external clock must be 500 kHz–1 MHz, have valid logic levels per datasheet specs (VSYNC = 1.75 V threshold), and be present during startup. If lost during operation, the device automatically reverts to its internal 500 kHz oscillator.
What is the purpose of the SS pin on LM22672QMRE-5.0/NOPB?
The SS (soft-start) pin on LM22672QMRE-5.0/NOPB sinks a constant 50 µA current, allowing an external capacitor to set the output voltage ramp time. For example, a 100 nF capacitor yields ~500 µs soft-start, reducing inrush current and preventing output overshoot during power-up or recovery from fault conditions.
LM22672QMRE-5.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 1A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
LM22672QMRE-5.0/NOPB FAQ
1.How can I place an order for LM22672QMRE-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM22672QMRE-5.0/NOPB 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 LM22672QMRE-5.0/NOPB reliable?
The price and inventory of LM22672QMRE-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM22672QMRE-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM22672QMRE-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM22672QMRE-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM22672QMRE-5.0/NOPB?
LM22672QMRE-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM22672QMRE-5.0/NOPB 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 LM22672QMRE-5.0/NOPB?
For technical support, including LM22672QMRE-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM22672QMRE-5.0/NOPB requirements.
6.How does Aetrix verify that LM22672QMRE-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM22672QMRE-5.0/NOPB 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 LM22672QMRE-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM22672QMRE-5.0/NOPB?
All LM22672QMRE-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM22672QMRE-5.0/NOPB, 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 LM22672QMRE-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM22672QMRE-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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