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Texas Instruments LM22675QMRE-5.0/NOPB
- Part No.:
- LM22675QMRE-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM22675QMRE-5.0/NOPB.pdf
- Description:
- IC REG BUCK 5V 1A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:625
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Product details
Overview
LM22675QMRE-5.0/NOPB from Texas Instruments is a 42 V, 1 A synchronous step-down DC/DC regulator in an SO PowerPAD-8 package, featuring fixed 5.0 V output, 500 kHz switching frequency, ±1.5% feedback reference accuracy, and integrated bootstrap diode. It delivers >90% efficiency in industrial power rails converting 12 V or 24 V inputs to stable 5 V for microcontrollers and interface ICs.
For engineers reviewing the LM22675QMRE-5.0/NOPB datasheet, LM22675QMRE-5.0/NOPB pinout, LM22675QMRE-5.0/NOPB application, or LM22675QMRE-5.0/NOPB equivalent, key selection criteria include input voltage range (4.5–42 V), thermal shutdown threshold (150°C), minimum on-time (100 ns), soft-start duration (500 µs), and compatibility with low-ESR ceramic output capacitors.
Technical Context
The LM22675QMRE-5.0/NOPB implements voltage-mode PWM control with input voltage feedforward to stabilize loop gain across wide VIN variations. Its internal Type III compensation is optimized for fixed 5 V output, eliminating external compensation components.
It integrates a 200 mΩ N-channel MOSFET switch, precision enable input with 1.6 V threshold and 0.6 V hysteresis, and a dedicated BOOT pin driving the high-side gate via external 10 nF ceramic capacitor. Thermal shutdown activates at 150°C with 15°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±1.5% over –40°C to +125°C junction temperature |
| Input Voltage Range | 4.5 V to 42 V - supports direct connection to 12 V, 24 V, and 36 V industrial rails |
| Switching Frequency | 500 kHz ±20% - enables compact 2.2 µH inductors and <10 µF ceramic output capacitance |
| Max Output Current | 1 A continuous - limited by internal current sense and thermal design with RθJA = 60°C/W |
| Quiescent Current | 3.4 mA typical at VOUT = 5 V - ensures low no-load power loss in always-on systems |
| Standby Current | 25 µA typical in shutdown - meets battery-backed system leakage requirements |
| Min On-Time | 100 ns - supports high VIN/VOUT ratios (e.g., 42 V → 5 V) without pulse-skipping |
| Thermal Shutdown | 150°C activation with ~15°C hysteresis - protects against sustained overload or poor PCB heatsinking |
Pinout & Package
LM22675QMRE-5.0/NOPB uses the HSOP-8 (SO PowerPAD-8) 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 | Drives high-side MOSFET gate; requires 10 nF ceramic capacitor between BOOT and SW |
| EN | Enable control input | Active-high logic; 1.6 V threshold with 0.6 V hysteresis; internal 6 µA pullup |
| SW | Power switch node | Connects to external Schottky diode cathode and inductor; swings from GND to VIN |
| FB | Feedback input | Internally tied to 5 V output divider; shorted directly to VOUT for fixed 5 V operation |
| GND | Power and signal ground | Primary return path; must be connected to exposed thermal pad for thermal performance |
| VIN | Main input supply | Accepts 4.5–42 V; bypassed with ≥10 µF ceramic capacitor near pin |
| NC (Pins 2, 3) | No-connect terminals | Not electrically bonded; serve only as thermal conduction paths to PCB |
| EP (Exposed Pad) | Thermal and ground plane | Must be soldered to ≥1 in² copper area tied to GND for RθJA ≤60°C/W |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bootstrap diode | Eliminates external bootstrap diode, reducing BOM count and layout complexity |
| Internal loop compensation | Enables stable operation with standard 2.2 µH inductors and 10–22 µF ceramic output caps-no external compensation required |
| Stable with low-ESR ceramics | Supports X5R/X7R MLCCs down to 5 mΩ ESR, enabling smaller, more reliable output filtering vs. electrolytics |
| 500 µs soft-start | Prevents inrush current into downstream loads and avoids bus droop during power-up sequencing |
| WEBENCH® enabled | Full schematic generation, thermal simulation, and BoM export available via TI's online design tool |
| AEC-Q100 Grade 1 qualified | Validated for automotive applications with guaranteed operation from –40°C to +125°C junction temperature |
Applications
| Industrial PLC I/O Module | Automotive Body Control Module |
|---|---|
Use Scenario: Powering isolated CAN transceivers and digital I/O drivers from a 24 V rail in programmable logic controllers. IC Role / Device Role / Timing Role: Primary 5 V buck regulator supplying logic-level interfaces and microcontroller peripherals. Use Value: Delivers 1 A at >90% efficiency with minimal thermal rise on FR4 PCBs, meeting EN 61000-6-4 emission limits due to fixed 500 kHz frequency. | Use Scenario: Generating 5 V for microcontroller, LIN transceiver, and sensor signal conditioning in door module electronics. IC Role / Device Role / Timing Role: Main system power supply with AEC-Q100 Grade 1 qualification and thermal shutdown for under-hood reliability. Use Value: Withstands 42 V load-dump transients and operates continuously at 125°C junction temperature, eliminating need for external transient protection. |
| Telecom Remote Radio Unit | Medical Point-of-Care Monitor |
Use Scenario: Converting -48 V telecom supply (via intermediate 12 V stage) to clean 5 V for FPGA configuration and Ethernet PHY. IC Role / Device Role / Timing Role: Secondary 5 V regulator in multi-rail power architecture requiring tight line regulation and low noise. Use Value: ±1.5% output accuracy and <10 mVpp ripple ensure reliable FPGA boot and Ethernet link stability under varying line conditions. | Use Scenario: Providing regulated 5 V to patient-connected analog front-end and display controller in portable diagnostic devices. IC Role / Device Role / Timing Role: Safety-critical power stage with low standby current and thermal fault protection. Use Value: 25 µA shutdown current extends battery life; thermal shutdown prevents overheating during extended use in enclosed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM22670MRE-5.0/NOPB | Same pinout and electrical specs, but rated for 0°C to +125°C (not automotive-grade); lacks AEC-Q100 qualification | Suitable for commercial/industrial use only; not validated for automotive vibration, temperature cycling, or ESD robustness | Select when AEC-Q100 compliance is unnecessary and cost sensitivity is higher |
| TPS54302DDCR | 3.5–28 V input, 3 A output, 2.5 V to 6 V adjustable output; no fixed 5 V option; requires external compensation | Better suited for higher-current or wider-VIN applications where 5 V is set via resistor divider | Choose when >1 A load or tighter output adjustability is needed, accepting added design complexity |
Compared with LM22670MRE-5.0/NOPB, the LM22675QMRE-5.0/NOPB adds automotive qualification and extended –40°C start-up capability; versus TPS54302DDCR, it trades current headroom and flexibility for plug-and-play fixed 5 V operation with zero external compensation.
Availability
LM22675QMRE-5.0/NOPB is available at Aetrix Electronics and suitable for industrial control, automotive body electronics, and telecom remote units requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LM22675QMRE-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 personal electronics markets.
The LM22675 product line delivers SIMPLE SWITCHER® step-down regulators targeting space-constrained, high-reliability power conversion where ease of design-in and thermal robustness are critical.
FAQ
What is the maximum input voltage rating for LM22675QMRE-5.0/NOPB?
The absolute maximum input voltage for LM22675QMRE-5.0/NOPB is 43 V, but the recommended operating range is 4.5 V to 42 V. Operation above 42 V risks exceeding safe SOA limits, especially under high ambient temperatures or poor PCB thermal design. The device has been validated for 42 V continuous operation with full 1 A load at 125°C junction temperature per its AEC-Q100 Grade 1 qualification.
Does LM22675QMRE-5.0/NOPB require an external feedback resistor divider?
No, LM22675QMRE-5.0/NOPB does not require an external feedback resistor divider because it features a factory-trimmed internal 5.0 V reference and fixed-output architecture. The FB pin is internally connected to the output divider network; users connect FB directly to the VOUT node. This eliminates resistor tolerance errors and reduces board space versus adjustable versions like LM22675-ADJ.
Can LM22675QMRE-5.0/NOPB operate with ceramic output capacitors only?
Yes, LM22675QMRE-5.0/NOPB is explicitly designed to be stable with low-ESR ceramic capacitors - including X5R and X7R MLCCs - without requiring additional series resistance. The internal Type III compensation and voltage-mode architecture ensure phase margin >45° with typical 10–22 µF ceramic outputs, avoiding the size, aging, and reliability drawbacks of aluminum electrolytics.
What is the purpose of the exposed thermal pad on LM22675QMRE-5.0/NOPB?
The exposed thermal pad (EP) on LM22675QMRE-5.0/NOPB serves as the primary thermal conduction path from the die to the PCB. It must be soldered to a solid GND copper pour of at least 1 in² to achieve the specified RθJA of 60°C/W. Failure to properly connect the EP results in elevated junction temperatures, premature thermal shutdown, and reduced output current capability - particularly critical in automotive and industrial environments where ambient temperatures exceed 85°C.
How does the enable pin (EN) function on LM22675QMRE-5.0/NOPB?
The EN pin on LM22675QMRE-5.0/NOPB is a precision enable input with a 1.6 V typical turn-on threshold and 0.6 V hysteresis. It features an internal 6 µA pullup, allowing direct connection to VIN for always-on operation or to a resistor divider for sequenced startup. Pulling EN below 1.3 V disables the regulator, reducing quiescent current to 25 µA. The pin tolerates up to 6 V absolute maximum and must never be driven above that level.
LM22675QMRE-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
LM22675QMRE-5.0/NOPB FAQ
1.How can I place an order for LM22675QMRE-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM22675QMRE-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 LM22675QMRE-5.0/NOPB reliable?
The price and inventory of LM22675QMRE-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 LM22675QMRE-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM22675QMRE-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM22675QMRE-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM22675QMRE-5.0/NOPB?
LM22675QMRE-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM22675QMRE-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 LM22675QMRE-5.0/NOPB?
For technical support, including LM22675QMRE-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM22675QMRE-5.0/NOPB requirements.
6.How does Aetrix verify that LM22675QMRE-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM22675QMRE-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 LM22675QMRE-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM22675QMRE-5.0/NOPB?
All LM22675QMRE-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM22675QMRE-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 LM22675QMRE-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM22675QMRE-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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