My Inquiry
My Account
Texas Instruments LM22672QMRX-5.0/NOPB
- Part No.:
- LM22672QMRX-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM22672QMRX-5.0/NOPB.pdf
- Description:
- IC REG BUCK 5V 1A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:1,222
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM22672QMRX-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 control, telecom power, and embedded systems requiring stable 5 V rails from 12 V or 24 V inputs.
For engineers reviewing the LM22672QMRX-5.0/NOPB datasheet, LM22672QMRX-5.0/NOPB pinout, LM22672QMRX-5.0/NOPB application, or LM22672QMRX-5.0/NOPB equivalent, key selection considerations include its automotive-grade AEC-Q100 Grade 1 qualification, internal voltage-mode compensation, adjustable soft-start via external capacitor, and compatibility with low-ESR ceramic output capacitors without external loop compensation.
Technical Context
The LM22672QMRX-5.0/NOPB implements a voltage-mode PWM controller with input voltage feedforward for stable loop gain across wide VIN ranges (4.5 V–42 V). Its internal type III compensation is optimized for fixed 5 V output, eliminating need for external compensation components.
It integrates a bootstrap gate driver with built-in diode, supports frequency adjustment (200 kHz–1 MHz) or synchronization via RT/SYNC pin, and features precision enable with 1.6 V threshold and 0.6 V hysteresis, plus thermal shutdown at 150°C and cycle-by-cycle current limiting at 1.3 A (typ).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±1.5% over –40°C to +125°C; eliminates external resistor divider and associated tolerance stack-up. |
| Input Voltage Range | 4.5 V to 42 V; supports direct regulation from 12 V, 24 V, and 48 V industrial/automotive rails without pre-regulation. |
| Switching Frequency | 500 kHz default; enables compact 4.7 µH inductors and 22 µF ceramic output capacitors with minimal board area. |
| Max Output Current | 1 A continuous; sustained under full thermal derating with SO PowerPAD package mounted to ≥1 in² copper. |
| RDS(ON) | 200 mΩ (typ) at TJ = 25°C; reduces conduction loss and improves efficiency >90% at mid-load in typical 12 V→5 V designs. |
| Quiescent Current | 3.4 mA (typ) at VOUT = 5 V; enables low-power standby operation without external bias supply. |
| Enable Threshold | 1.6 V (typ) with 0.6 V hysteresis; allows precise power sequencing using simple resistor dividers from upstream rails. |
Pinout & Package
LM22672QMRX-5.0/NOPB uses the HSOP-8 (SO PowerPAD™) package with 4.89 mm × 3.90 mm body size and exposed thermal pad connected to GND for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply input | Provides gate drive voltage for internal high-side MOSFET; requires 10 nF ceramic capacitor between BOOT and SW. |
| EN | Enable control input | Logic-level on/off control with 1.6 V threshold; internal 6 µA pullup allows direct connection to VIN via resistor for automatic startup. |
| SW | Switch node output | Drives external inductor; swings from ~0 V to VIN; requires low-inductance layout to minimize EMI and ringing. |
| FB | Feedback reference input | Internally tied to 5.0 V reference; no external resistors needed-pin left unconnected in fixed-output configuration. |
| GND | Power and signal ground | Common return for power stage and control circuitry; exposed pad must be soldered to PCB GND plane for thermal and electrical integrity. |
| RT/SYNC | Oscillator mode control | Selects internal 500 kHz clock, resistor-adjusted frequency (200 kHz–1 MHz), or external synchronization; latched at startup. |
| SS | Soft-start timing input | Controls ramp rate of output voltage via external capacitor; default internal soft-start is ~500 µs. |
| VIN | Main power input | Accepts 4.5 V–42 V; requires local 10 µF ceramic input capacitor placed near VIN and GND pins. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated boot-strap diode | Eliminates external bootstrap diode, reducing BOM count and layout complexity while maintaining reliable high-side gate drive. |
| Stable with ceramic capacitors | Supports low-ESR ceramic output caps down to 22 µF without oscillation-no tantalum or electrolytic required. |
| Adjustable soft-start | External capacitor on SS pin extends startup time to prevent inrush current and overshoot in multi-rail systems. |
| WEBENCH® enabled | Full parametric design support in TI's WEBENCH tool-including component selection, efficiency simulation, thermal modeling, and PCB layout export. |
| AEC-Q100 Grade 1 qualified | Validated for automotive applications operating from –40°C to +125°C junction temperature with full reliability testing. |
Applications
| Industrial PLC Power Supply | Automotive Body Control Module |
|---|---|
Use Scenario: Regulating 24 V battery rail to clean 5 V for microcontroller, CAN transceivers, and sensor interfaces in harsh factory environments. IC Role / Device Role / Timing Role: Primary buck converter delivering regulated 5 V with high line/load regulation and immunity to voltage transients up to 42 V. Use Value: Enables single-stage conversion without pre-regulator, reducing solution size and improving system efficiency by >90% at 500 mA load. | Use Scenario: Powering infotainment MCU and display logic from vehicle 12 V battery with cold-crank (4.5 V) and load-dump (42 V) tolerance. IC Role / Device Role / Timing Role: AEC-Q100 qualified step-down regulator providing stable 5 V during cranking, restart, and transient events. Use Value: Guarantees uninterrupted operation across full automotive temperature range and meets ISO 7637-2 pulse immunity requirements via robust internal protection. |
| Telecom Remote Radio Unit | Embedded Medical Diagnostic Device |
Use Scenario: Generating isolated 5 V bias for RF front-end ICs and ADCs in outdoor small-cell base stations with limited airflow. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator with thermal shutdown and current limit protecting against antenna mismatch faults. Use Value: Maintains 1 A output with <15°C temperature rise over ambient when using 1 in² thermal pad copper, enabling fanless enclosure design. | Use Scenario: Providing noise-sensitive 5 V supply for analog front-end and data acquisition circuits in portable ultrasound or ECG equipment. IC Role / Device Role / Timing Role: Low-noise, tightly regulated DC/DC converter with precision enable for controlled power-up sequencing and low standby current. Use Value: Achieves <10 mVpp output ripple with proper ceramic cap selection, meeting medical-grade signal integrity requirements without post-regulation LDOs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM22670QMRX-5.0/NOPB | Lower 3 V minimum input voltage; same 5 V output, but rated only to 40 V max VIN and lacks AEC-Q100 qualification. | Suitable for non-automotive industrial use where input may dip below 4.5 V, but not for automotive or 42 V surge-prone systems. | Choose LM22672QMRX-5.0/NOPB when 42 V absolute maximum rating, AEC-Q100 Grade 1, or extended thermal range is required. |
| TPS54340QDDARQ1 | Higher 3.5 A output capability; adjustable output; requires external compensation; 42 V max VIN, AEC-Q100 Grade 1. | Used where higher current or programmable output is needed-adds design complexity and BOM cost versus fixed 5 V solution. | Choose LM22672QMRX-5.0/NOPB for cost-sensitive, space-constrained 1 A fixed-5 V applications with minimal external components. |
Compared with LM22670QMRX-5.0/NOPB and TPS54340QDDARQ1, the LM22672QMRX-5.0/NOPB delivers optimal balance of automotive qualification, 42 V surge tolerance, fixed 5 V simplicity, and SO PowerPAD thermal performance in a proven 1 A footprint-reducing validation effort and bill-of-materials count.
Availability
LM22672QMRX-5.0/NOPB is available at Aetrix Electronics and suitable for industrial control, automotive body electronics, and telecom remote radio units requiring stable component supply with long-term lifecycle assurance.
Supply support for LM22672QMRX-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 company specializing in analog, embedded processing, and power management ICs, with leadership in high-reliability automotive and industrial solutions.
The LM22672 product line delivers SIMPLE SWITCHER® buck regulators designed for ease-of-use in rugged DC/DC conversion-featuring internal compensation, wide input range, and automotive qualification for mission-critical power systems.
FAQ
What is the maximum input voltage rating for LM22672QMRX-5.0/NOPB?
The LM22672QMRX-5.0/NOPB has an absolute maximum input voltage rating of 43 V, with recommended operating range from 4.5 V to 42 V. This allows safe operation during automotive load-dump events and industrial 24 V/48 V rail transients. Exceeding 43 V risks permanent damage per the Absolute Maximum Ratings table in the SNVS588M datasheet.
Does LM22672QMRX-5.0/NOPB require external compensation components?
No, the LM22672QMRX-5.0/NOPB features fully internal voltage-mode loop compensation optimized for its fixed 5 V output. No external compensation network is needed-only standard input/output capacitors, inductor, and optional soft-start capacitor are required for basic operation.
How is the soft-start time adjusted on LM22672QMRX-5.0/NOPB?
The LM22672QMRX-5.0/NOPB provides adjustable soft-start via an external capacitor connected between the SS pin and GND. Typical values range from 100 nF to 1 µF, with approximate soft-start time calculated as TSS ≈ 26 × 103 × CSS. The internal soft-start defaults to ~500 µs when SS is left open.
Is LM22672QMRX-5.0/NOPB pin-compatible with other members of the LM2267x family?
Yes, all LM2267x variants-including LM22672QMRX-5.0/NOPB, LM22672QMRX-ADJ/NOPB, and LM22672QMRX-3.3/NOPB-share identical HSOP-8 (MR) package, pinout, and thermal pad layout. Only FB and RT/SYNC configurations differ between fixed and adjustable versions.
What thermal performance can be expected from LM22672QMRX-5.0/NOPB in a typical PCB layout?
With the exposed thermal pad soldered to ≥1 in² of 2-oz copper, the LM22672QMRX-5.0/NOPB achieves a junction-to-ambient thermal resistance (RθJA) of 60°C/W. At 1 A load and 12 V input, this yields ~15°C temperature rise above ambient-enabling reliable operation without forced air cooling in most industrial and automotive enclosures.
LM22672QMRX-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:
- Obsolete
- 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
LM22672QMRX-5.0/NOPB FAQ
1.How can I place an order for LM22672QMRX-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM22672QMRX-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 LM22672QMRX-5.0/NOPB reliable?
The price and inventory of LM22672QMRX-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 LM22672QMRX-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM22672QMRX-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM22672QMRX-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM22672QMRX-5.0/NOPB?
LM22672QMRX-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM22672QMRX-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 LM22672QMRX-5.0/NOPB?
For technical support, including LM22672QMRX-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM22672QMRX-5.0/NOPB requirements.
6.How does Aetrix verify that LM22672QMRX-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM22672QMRX-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 LM22672QMRX-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM22672QMRX-5.0/NOPB?
All LM22672QMRX-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM22672QMRX-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 LM22672QMRX-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM22672QMRX-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM22672QMRX-5.0/NOPB Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
