My Inquiry
My Account
Texas Instruments LM22676QMR-5.0/NOPB
- Part No.:
- LM22676QMR-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM22676QMR-5.0/NOPB.pdf
- Description:
- IC REG BUCK 5V 3A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:400
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM22676QMR-5.0/NOPB from Texas Instruments is an automotive-grade, 42 V input, 3 A synchronous step-down DC/DC regulator with fixed 5.0 V output, 500 kHz switching frequency, ±1.5% feedback reference accuracy, and integrated bootstrap diode. It operates from –40°C to +125°C junction temperature and delivers >90% efficiency in industrial power conversion applications.
For engineers reviewing the LM22676QMR-5.0/NOPB datasheet, LM22676QMR-5.0/NOPB pinout, LM22676QMR-5.0/NOPB application, or LM22676QMR-5.0/NOPB equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, internal voltage-mode compensation, 120 mΩ high-side MOSFET (PFM package), precision enable threshold (1.6 V typ), and thermal shutdown at 150°C.
Technical Context
The LM22676QMR-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 configurations, eliminating external compensation components.
It integrates a 42 V, 120 mΩ N-channel MOSFET switch and uses a bootstrap capacitor between BOOT and SW to drive the high-side gate. Minimum on-time (100 ns) and off-time (200 ns) constrain duty-cycle limits, enabling stable operation down to 5 V output from up to 42 V input while ensuring boot-cap recharge and current-sense accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 42 V - supports direct connection to 12 V/24 V automotive rails and industrial supplies without pre-regulation. |
| Output Voltage | Fixed 5.0 V ±1.5% - eliminates external feedback divider; enables plug-and-play 5 V system rail generation. |
| Max Output Current | 3 A - sufficient for powering microcontrollers, sensors, and interface ICs in embedded control modules. |
| Switching Frequency | 500 kHz - allows use of compact 2.2–10 µH inductors and low-ESR ceramic output capacitors. |
| MOSFET RDS(on) | 120 mΩ (PFM package) - reduces conduction loss and thermal stress at full load under automotive ambient conditions. |
| Enable Threshold | 1.6 V (typ), 0.6 V hysteresis - enables precise power sequencing with resistor dividers from upstream rails. |
| Quiescent Current | 3.4 mA (active), 25 µA (shutdown) - supports low-power sleep modes in always-on vehicle subsystems. |
Pinout & Package
LM22676QMR-5.0/NOPB is housed in an HSOP-8 (PFM) package with exposed thermal pad, measuring 4.89 mm × 3.90 mm. The exposed pad must be soldered to a PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW) | Switch Node | Drives external inductor; swings from GND to VIN; requires low-inductance layout to minimize EMI and ringing. |
| 2 (VIN) | Main Input Supply | Accepts 4.5–42 V; must be decoupled with ≥10 µF ceramic capacitor near pin. |
| 3 (BOOT) | Bootstrap Supply | Connects to SW via 10 nF ceramic capacitor; provides gate drive voltage for internal high-side MOSFET. |
| 4 (GND) | Power Ground | System return path; tied to exposed pad; must be low-impedance copper pour for thermal dissipation. |
| 5 (NC) | No Connect | Internally unconnected; electrically isolated but thermally conductive; may be grounded for thermal enhancement. |
| 6 (FB) | Feedback Input | Internally connected to 5 V reference; shorted directly to VOUT for fixed-output operation. |
| 7 (EN) | Enable Control | Logic-level input; 1.6 V threshold enables regulation; <1.3 V disables with 25 µA shutdown current. |
| 8 (NC) | No Connect | Internally unconnected; same thermal role as Pin 5; recommended to ground for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualified | Validated for automotive use from –40°C to +125°C junction temperature with robust HBM ESD (±2 kV). |
| Integrated Bootstrap Diode | Eliminates external bootstrap diode; reduces BOM count and layout complexity in high-reliability systems. |
| Internal Soft-Start | 500 µs typical ramp time prevents inrush current and output overshoot during power-up. |
| Stable with Ceramic Capacitors | Supports low-ESR MLCCs on input/output; avoids electrolytic capacitors and associated lifetime/reliability concerns. |
| Thermal Shutdown & Current Limit | 150°C shutdown with 135°C hysteresis; peak current limit protects against short-circuit faults without external sensing. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Power Rail |
|---|---|
Use Scenario: Supplies 5 V to microcontroller, CAN transceiver, and sensor interface circuitry in door module or lighting control unit. IC Role / Device Role / Timing Role: Primary 5 V buck regulator converting 12 V battery rail; handles cold-crank (4.5 V) and load-dump (42 V) transients. Use Value: AEC-Q100 qualification ensures reliability over 15-year vehicle life; 500 kHz switching minimizes filter size in space-constrained modules. | Use Scenario: Powers digital logic and analog front-end circuits in modular programmable logic controller chassis. IC Role / Device Role / Timing Role: Fixed-output DC/DC stage delivering clean 5 V from 24 V industrial bus; supports hot-swap and brownout recovery. Use Value: ±1.5% output accuracy maintains ADC reference stability; 3 A capability supports multiple I/O channels simultaneously. |
| Telecom Remote Radio Unit (RRU) | Medical Diagnostic Sensor Interface |
Use Scenario: Generates 5 V bias for RF front-end ICs and FPGA configuration in outdoor base station equipment. IC Role / Device Role / Timing Role: Secondary power stage downstream of 48 V intermediate bus; operates continuously under high ambient temperature. Use Value: 120 mΩ RDS(on) and exposed-pad thermal design sustain 3 A output at +85°C ambient without derating. | Use Scenario: Provides isolated 5 V supply for patient-connected analog signal conditioning and data acquisition circuits. IC Role / Device Role / Timing Role: Safety-critical power converter feeding isolated ADCs and low-noise amplifiers in portable diagnostic devices. Use Value: Internal soft-start prevents sensor offset drift during power-up; low quiescent current extends battery runtime in handheld units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM22670QMR-5.0/NOPB | Lower 36 V max input; same 3 A rating, 500 kHz, and AEC-Q100 Grade 1 qualification. | Suitable where input never exceeds 36 V (e.g., 24 V-only systems); smaller thermal footprint. | Select when VIN stays ≤36 V to reduce cost and simplify transient protection. |
| TPS54360QPWPRQ1 | 60 V input, 3.5 A, adjustable output; external compensation; no integrated bootstrap diode. | Better for wide-input designs requiring >42 V or programmable output; needs additional components. | Choose when future-proofing for higher input or flexible output voltage is required. |
Compared with LM22676QMR-5.0/NOPB, LM22670QMR-5.0/NOPB offers identical functionality at lower voltage stress, while TPS54360QPWPRQ1 trades integration for extended input range and configurability-neither is pin-compatible, but both serve overlapping automotive and industrial buck applications.
Availability
LM22676QMR-5.0/NOPB is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and telecom remote radio units requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for LM22676QMR-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 designing analog, embedded processing, and connectivity technologies for industrial, automotive, and communications markets.
The LM22676-Q1 product line delivers SIMPLE SWITCHER® automotive-grade DC/DC regulators targeting high-reliability power conversion in engine control, chassis, and infotainment systems.
FAQ
What is the maximum input voltage rating for LM22676QMR-5.0/NOPB?
The LM22676QMR-5.0/NOPB has an absolute maximum input voltage of 43 V and a recommended operating range of 4.5 V to 42 V. This allows direct connection to 12 V and 24 V automotive batteries, including load-dump transients up to 42 V. Operation beyond 42 V risks permanent damage, and the device incorporates internal protection to prevent latch-up during brief overvoltage events.
Does LM22676QMR-5.0/NOPB require an external feedback resistor divider?
No, LM22676QMR-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 node, enabling direct connection to VOUT. This simplifies layout, improves accuracy, and eliminates resistor tolerance and temperature drift errors inherent in external dividers.
What package type and thermal characteristics apply to LM22676QMR-5.0/NOPB?
LM22676QMR-5.0/NOPB uses the HSOP-8 (PFM) package with an exposed thermal pad measuring 4.89 mm × 3.90 mm. Its junction-to-ambient thermal resistance (RθJA) is 22°C/W when mounted on a 2-layer PCB with 1 in² copper area under the exposed pad. Proper soldering of the pad to a solid ground plane is mandatory to achieve rated 3 A output current at +125°C junction temperature.
How does the enable function operate on LM22676QMR-5.0/NOPB?
The EN pin on LM22676QMR-5.0/NOPB provides precision enable control with a 1.6 V typical threshold and 0.6 V hysteresis. Pulling EN below 1.3 V disables regulation and reduces quiescent current to 25 µA. An internal 6 µA pull-up allows direct connection to VIN for always-on operation, or a resistor divider for sequenced startup. Exceeding 6 V on EN violates absolute maximum ratings and may damage the pin.
Is LM22676QMR-5.0/NOPB compatible with ceramic output capacitors?
Yes, LM22676QMR-5.0/NOPB is explicitly designed to be stable with low-ESR ceramic capacitors on both input and output. Its internally compensated voltage-mode control loop eliminates the need for electrolytic or tantalum capacitors. TI recommends ≥22 µF X5R/X7R MLCCs at the output, placed close to the FB and GND pins, to ensure optimal transient response and avoid oscillation under light-load conditions.
LM22676QMR-5.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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
LM22676QMR-5.0/NOPB FAQ
1.How can I place an order for LM22676QMR-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM22676QMR-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 LM22676QMR-5.0/NOPB reliable?
The price and inventory of LM22676QMR-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 LM22676QMR-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM22676QMR-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM22676QMR-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM22676QMR-5.0/NOPB?
LM22676QMR-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM22676QMR-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 LM22676QMR-5.0/NOPB?
For technical support, including LM22676QMR-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM22676QMR-5.0/NOPB requirements.
6.How does Aetrix verify that LM22676QMR-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM22676QMR-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 LM22676QMR-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM22676QMR-5.0/NOPB?
All LM22676QMR-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM22676QMR-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 LM22676QMR-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM22676QMR-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM22676QMR-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…
