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Texas Instruments LM22676QMRE-5.0/NOPB
- Part No.:
- LM22676QMRE-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM22676QMRE-5.0/NOPB.pdf
- Description:
- IC REG BUCK 5V 3A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:242
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Product details
Overview
LM22676QMRE-5.0/NOPB from Texas Instruments is a 42 V, 3 A synchronous step-down DC/DC regulator in an exposed-pad HSOP-8 package, delivering fixed 5.0 V output with ±1.5% feedback reference accuracy, 500 kHz switching frequency, and integrated bootstrap diode - used in industrial power rails requiring stable 5 V at up to 3 A from 4.5–42 V input.
For engineers reviewing the LM22676QMRE-5.0/NOPB datasheet, LM22676QMRE-5.0/NOPB pinout, LM22676QMRE-5.0/NOPB application, or LM22676QMRE-5.0/NOPB equivalent, key selection criteria include its automotive-grade AEC-Q100 Grade 1 qualification (–40°C to +125°C), internal voltage-mode compensation, 25 µA shutdown current, and compatibility with low-ESR ceramic output capacitors.
Technical Context
The LM22676QMRE-5.0/NOPB implements a voltage-mode PWM controller with input voltage feedforward to stabilize loop gain across wide VIN ranges. Its internal type III compensation network is optimized for fixed 5 V output, eliminating external compensation components.
It integrates a 120 mΩ N-channel MOSFET switch, precision enable input with 1.6 V threshold and 0.6 V hysteresis, and thermal shutdown at 150°C. The BOOT/SW bootstrap circuit requires a 10 nF ceramic capacitor and mandates ≥5 mA minimum load for reliable gate drive recharge during each off-time cycle.
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 conversion from 12 V/24 V industrial and automotive rails |
| Max Output Current | 3 A continuous - limited by internal 120 mΩ MOSFET RDS(ON) and thermal design |
| Switching Frequency | 500 kHz ±20% - enables compact magnetics and fast transient response |
| Quiescent Current | 3.4 mA typical at VFB = 5 V - ensures high light-load efficiency |
| Shutdown Current | 25 µA typical - reduces system standby power in battery-backed applications |
| Enable Threshold | 1.6 V typical falling edge with 0.6 V hysteresis - enables precise power sequencing |
Pinout & Package
LM22676QMRE-5.0/NOPB uses an HSOP-8 (PowerPAD™) package with 4.89 mm × 3.90 mm body size and thermally enhanced exposed pad soldered to PCB ground plane for improved thermal dissipation (RθJA = 22°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 4.5–42 V DC; must be decoupled near pin with low-ESR ceramic capacitor |
| EN | Enable control input | Precision logic-level input; <1.6 V disables regulator, >2.2 V enables; internal 6 µA pullup |
| SW | Switch node output | Drives external inductor; swings from ~0 V to VIN; requires tight layout to minimize EMI |
| BOOT | Bootstrap supply terminal | Connects to SW via 10 nF ceramic capacitor; supplies gate drive for internal high-side MOSFET |
| FB | Feedback input | Internally connected to 5 V divider; shorted directly to VOUT for fixed-output operation |
| GND | Power and signal ground | Common return path; must be low-impedance and tied to exposed pad |
| Exposed Pad | Thermal & electrical ground | Electrically connected to GND internally; requires solid solder mask-defined thermal relief to PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Bootstrap Diode | Eliminates external bootstrap diode, reducing BOM count and layout area in HSOP-8 footprint |
| Internal Compensation | Optimized type III network for fixed 5 V output - no external compensation components required |
| Soft-Start | Fixed 500 µs ramp time - prevents inrush current and output overshoot at startup |
| AEC-Q100 Grade 1 | Qualified for automotive applications with guaranteed operation from –40°C to +125°C junction temperature |
| Stable with Ceramic Capacitors | Supports low-ESR ceramic output caps down to 22 µF - simplifies filtering and improves reliability vs. electrolytics |
Applications
| Industrial PLC Power Supply | Automotive Body Control Module |
|---|---|
|
Use Scenario: Converting 24 V vehicle battery rail to clean 5 V for microcontroller, CAN transceivers, and sensors in under-hood modules. IC Role / Device Role / Timing Role: Primary 5 V point-of-load regulator with automotive-grade thermal and ESD robustness. Use Value: Delivers 3 A at 5 V with <25 µA shutdown current, enabling always-on functionality without excessive battery drain. |
Use Scenario: Providing regulated 5 V to programmable logic controllers in factory automation cabinets fed from 24 V DC industrial supplies. IC Role / Device Role / Timing Role: Fixed-output buck converter with internal compensation and wide-input tolerance for unregulated plant power. Use Value: Eliminates need for external compensation and soft-start timing components, reducing design cycle time and BOM cost. |
| Telecom Remote Radio Unit | Medical Diagnostic Equipment |
|
Use Scenario: Generating 5 V from 48 V intermediate bus in outdoor small-cell base station RF units operating at elevated ambient temperatures. IC Role / Device Role / Timing Role: High-efficiency, thermally robust DC/DC stage supporting 500 kHz switching and 125°C junction operation. Use Value: Achieves >90% efficiency at full load while maintaining stability with ceramic output capacitors - critical for fanless enclosures. |
Use Scenario: Powering FPGA, ADCs, and interface ICs in portable ultrasound or patient monitoring devices requiring low-noise, reliable 5 V. IC Role / Device Role / Timing Role: Safety-critical power rail regulator with thermal shutdown and current limiting for fault containment. Use Value: Integrated protection features (thermal shutdown, current limit, UVLO) reduce need for external supervision circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM22676QMR-5.0/NOPB | Same silicon, identical electrical specs, but in TO-263-3 (D²PAK) package with larger thermal mass and higher RθJA (60°C/W) | Preferred where board space allows larger footprint and higher peak power dissipation is needed | Select when thermal margin is constrained and PCB real estate permits D²PAK mounting |
| LM2676-5.0 | Legacy 3 A buck regulator with 260 kHz switching, higher RDS(ON) (170 mΩ), no integrated bootstrap diode, and non-automotive qualification | Suitable only for cost-sensitive, non-automotive, lower-frequency designs with relaxed EMI and thermal requirements | Choose only if legacy compatibility or lower switching noise is prioritized over efficiency and footprint |
Compared with LM22676QMRE-5.0/NOPB, the LM22676QMR-5.0/NOPB offers superior thermal performance in high-power intermittent loads but requires more PCB area; the LM2676-5.0 trades efficiency, integration, and qualification for lower cost and reduced EMI in less demanding applications.
Availability
LM22676QMRE-5.0/NOPB is available at Aetrix Electronics and suitable for industrial control, automotive body electronics, and telecom infrastructure requiring stable component supply with AEC-Q100 compliance and long-term manufacturability.
Supply support for LM22676QMRE-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 designing analog, embedded processing, and connectivity technologies for industrial, automotive, and communications markets.
The LM22676 product line delivers SIMPLE SWITCHER® buck regulators optimized for ease of use, minimal external components, and robust operation across harsh input voltage and temperature conditions.
FAQ
What is the maximum input voltage rating for LM22676QMRE-5.0/NOPB?
The absolute maximum input voltage for LM22676QMRE-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 operating area limits and may trigger internal protection circuits. The device is specifically designed for 24 V and 48 V intermediate bus applications with transient headroom.
Does LM22676QMRE-5.0/NOPB require an external feedback resistor divider?
No - LM22676QMRE-5.0/NOPB has an internal resistor divider configured for fixed 5.0 V output, so the FB pin must be connected directly to the output. Unlike the -ADJ variant, no external resistors are needed, simplifying layout and improving accuracy by eliminating resistor tolerance and thermal drift effects.
What thermal considerations apply to LM22676QMRE-5.0/NOPB in HSOP-8 package?
LM22676QMRE-5.0/NOPB in HSOP-8 has RθJA = 22°C/W when the exposed pad is properly soldered to a ≥1 in² copper pour on the PCB. Thermal performance depends critically on pad solder coverage and ground plane connectivity. Junction temperature must remain ≤125°C for continuous 3 A operation; derating is required above 85°C ambient.
Can LM22676QMRE-5.0/NOPB be used with ceramic output capacitors?
Yes - LM22676QMRE-5.0/NOPB is explicitly characterized and stabilized for use with low-ESR ceramic capacitors, including X5R and X7R types. A minimum of 22 µF is recommended at the output. This eliminates electrolytic capacitor aging and leakage concerns while improving transient response and reliability.
Is LM22676QMRE-5.0/NOPB qualified for automotive applications?
Yes - LM22676QMRE-5.0/NOPB is AEC-Q100 Grade 1 qualified (–40°C to +125°C junction temperature) and designated as an automotive-grade part. It includes enhanced ESD protection (2 kV HBM), extended temperature validation, and production lot traceability per automotive quality standards.
LM22676QMRE-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:
- 3A
- 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
LM22676QMRE-5.0/NOPB FAQ
1.How can I place an order for LM22676QMRE-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM22676QMRE-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 LM22676QMRE-5.0/NOPB reliable?
The price and inventory of LM22676QMRE-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 LM22676QMRE-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM22676QMRE-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM22676QMRE-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM22676QMRE-5.0/NOPB?
LM22676QMRE-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM22676QMRE-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 LM22676QMRE-5.0/NOPB?
For technical support, including LM22676QMRE-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM22676QMRE-5.0/NOPB requirements.
6.How does Aetrix verify that LM22676QMRE-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM22676QMRE-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 LM22676QMRE-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM22676QMRE-5.0/NOPB?
All LM22676QMRE-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM22676QMRE-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 LM22676QMRE-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM22676QMRE-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM22676QMRE-5.0/NOPB Tags
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