My Inquiry
My Account
Texas Instruments LM22675MRX-5.0/NOPB
- Part No.:
- LM22675MRX-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM22675MRX-5.0/NOPB.pdf
- Description:
- IC REG BUCK 5V 1A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:1,985
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM22675MRX-5.0/NOPB from Texas Instruments is a fixed 5 V, 1 A synchronous step-down DC/DC regulator in an HSOP-8 PowerPAD package. It integrates a 200 mΩ N-channel MOSFET switch, operates from 4.5 V to 42 V input, delivers ±1.5% output voltage accuracy over –40°C to 125°C, and uses internal voltage-mode control with 500 kHz switching frequency for compact filter design.
For engineers reviewing the LM22675MRX-5.0/NOPB datasheet, LM22675MRX-5.0/NOPB pinout, LM22675MRX-5.0/NOPB application, or LM22675MRX-5.0/NOPB equivalent, key selection criteria include input voltage range (4.5–42 V), thermal performance in SO PowerPAD-8, fixed 5 V output tolerance, enable threshold hysteresis (0.6 V), and compatibility with low-ESR ceramic output capacitors.
Technical Context
The LM22675MRX-5.0/NOPB implements a voltage-mode PWM controller with input voltage feedforward to stabilize loop gain across input variations. Its internal Type III compensation is optimized for fixed 5 V output, eliminating external compensation components.
It integrates a bootstrap diode, soft-start (500 µs typ), precision enable (1.6 V threshold, 0.6 V hysteresis), and thermal shutdown (150°C). The device supports stable operation with ceramic output capacitors and enforces minimum on-time (100 ns) and off-time (200 ns) to ensure boot-cap recharge and current-sense accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V, ±1.5% accuracy over full temperature and line range - ensures reliable logic-level supply without external feedback resistors. |
| Input Voltage Range | 4.5 V to 42 V - supports industrial 24 V rails, automotive battery transients, and telecom 48 V derived supplies. |
| Max Output Current | 1 A continuous - sufficient for powering microcontrollers, sensors, and interface ICs in embedded systems. |
| Switching Frequency | 500 kHz (±100 kHz) - enables use of small inductors (e.g., 10–22 µH) and low-ESR ceramic capacitors for compact, low-profile designs. |
| RDS(ON) | 0.24 Ω (typ) at TJ = 25°C - minimizes conduction loss and improves efficiency (>90% typical at 12 VIN/5 VOUT/0.5 A). |
| Quiescent Current | 3.4 mA (typ) at VOUT = 5 V - balances light-load efficiency and fast transient response. |
| Standby Current | 25 µA (typ) in shutdown - critical for battery-backed or always-on subsystems requiring ultra-low leakage. |
| Junction Temp Range | –40°C to 125°C - qualified for industrial and automotive under-hood environments without derating. |
Pinout & Package
LM22675MRX-5.0/NOPB is housed in an HSOP-8 (SO PowerPAD-8) package with 4.89 mm × 3.90 mm body size and exposed thermal pad. The exposed pad must be soldered to a PCB ground plane for optimal thermal performance (RθJA = 60°C/W with 1 in² copper).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply input | Connects to SW node via 10 nF ceramic capacitor; provides gate drive voltage for internal high-side MOSFET. |
| EN | Enable control input | Logic-compatible input with 1.6 V turn-on threshold and 0.6 V hysteresis; internal 6 µA pull-up allows direct VIN tie for always-on operation. |
| SW | Power switch output | Drives external inductor; swings from GND to VIN; requires Schottky catch diode or synchronous rectifier. |
| FB | Feedback reference input | Internally connected to 5 V output divider (7.38 kΩ/2.55 kΩ); shorted directly to VOUT for fixed 5 V operation. |
| GND | Power and signal ground | Common return for power stage and control circuitry; must be low-impedance connection to exposed pad. |
| VIN | Main input supply | Accepts 4.5–42 V; bypassed with ≥10 µF ceramic capacitor near pin to suppress high-frequency noise. |
| NC (Pins 2, 3) | No-connect terminals | Not electrically bonded; serve as thermal conduction paths only - must not be routed or connected. |
| EP (Exposed Pad) | Thermal & ground terminal | Must be soldered to solid GND plane; primary path for heat dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated boot-strap diode | Eliminates external bootstrap diode, reducing BOM count and layout area while ensuring reliable high-side gate drive. |
| Internal soft-start (500 µs) | Prevents inrush current and output overshoot during power-up; no external capacitor required. |
| Stable with ceramic capacitors | Supports low-ESR, high-frequency ceramic output caps (e.g., X5R/X7R 10–47 µF), enabling smaller footprint and lower cost vs. electrolytic solutions. |
| WEBENCH® enabled | Full design support via TI's online tool including component selection, efficiency simulation, thermal modeling, and PCB layout export. |
| Thermal shutdown & current limit | Protects against sustained overload and PCB overheating; trips at 150°C junction temp and 1.5 A peak switch current (typ). |
| Precision enable with UVLO | Enables clean power sequencing and external undervoltage lockout using resistor dividers - critical for battery-powered systems. |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Powering isolated CAN transceivers, analog sensor front-ends, and digital I/O drivers in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Primary 5 V point-of-load regulator converting 24 V field bus to logic supply; handles load steps up to 800 mA with <1% droop. Use Value: High input voltage range tolerates 24 V rail transients; SO PowerPAD-8 package ensures robust thermal performance in sealed enclosures. | Use Scenario: Supplying microcontroller core, LIN transceiver, and LED driver circuits in door module electronics. IC Role / Device Role / Timing Role: Main 5 V regulator fed from vehicle battery (9–16 V nominal, up to 42 V load dump); manages cold-crank (4.5 V min) and start-stop cycles. Use Value: –40°C to 125°C rating meets AEC-Q100 Grade 1 requirements; precision enable allows coordinated wake-up with main ECU. |
| Telecom Remote Radio Unit | Medical Point-of-Care Monitor |
Use Scenario: Generating stable 5 V from 48 V backplane for FPGA configuration, ADC reference, and Ethernet PHY. IC Role / Device Role / Timing Role: Secondary buck converter downstream of intermediate 12 V rail; delivers low-noise 5 V with <10 mVpp ripple at full load. Use Value: 500 kHz switching enables small 12 µH inductor and 22 µF ceramic output cap; internal compensation avoids tuning effort. | Use Scenario: Powering ARM-based display controller, touch interface, and patient sensor interface in portable diagnostic devices. IC Role / Device Role / Timing Role: Primary system regulator converting single-cell Li-ion (3.0–4.2 V) or USB 5 V input to clean 5 V for mixed-signal subsystems. Use Value: 25 µA shutdown current extends battery life; fixed 5 V output eliminates feedback resistor errors and layout sensitivity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM22670MRX-5.0/NOPB | Same pinout, 500 kHz, but rated for 3 A output and higher RDS(ON) (0.12 Ω); larger thermal pad area. | Higher current capability suits systems with future expansion headroom or parallel load sharing. | Select when >1 A load margin is required and board space allows larger thermal pad routing. |
| TPS54202DRCT | 3–28 V input, 2 A, 500 kHz, integrated FETs, but requires external compensation and has no internal boot diode. | Lacks integrated bootstrap diode and fixed 5 V option - increases BOM and layout complexity for simple 5 V conversion. | Choose only if adjustable output or higher current is needed; avoid for drop-in 5 V replacement due to pinout and feature mismatch. |
Compared with LM22675MRX-5.0/NOPB, LM22670MRX-5.0/NOPB offers higher current headroom at the cost of larger thermal solution, while TPS54202DRCT introduces design overhead with external compensation and missing bootstrap diode - making LM22675MRX-5.0/NOPB the optimal choice for cost-sensitive, space-constrained 1 A fixed-5 V applications.
Availability
LM22675MRX-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, long-term lifecycle support, and AEC-Q100-aligned reliability.
Supply support for LM22675MRX-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 consumer markets.
The LM22675MRX-5.0/NOPB belongs to TI's SIMPLE SWITCHER® family - engineered for ease-of-use in non-isolated DC/DC buck conversion, emphasizing minimal external components, internal compensation, and robust operation across harsh input conditions.
FAQ
What is the recommended input capacitor for LM22675MRX-5.0/NOPB?
A minimum 10 µF X5R/X7R ceramic capacitor placed within 5 mm of the VIN and GND pins is recommended for LM22675MRX-5.0/NOPB. This value ensures effective high-frequency noise suppression and stable operation across the 4.5–42 V input range. For high-transient environments (e.g., automotive load dump), adding a 47–100 µF aluminum polymer capacitor in parallel improves bulk energy storage without compromising stability.
Can LM22675MRX-5.0/NOPB operate with an input voltage below 4.5 V?
No, LM22675MRX-5.0/NOPB cannot reliably operate below 4.5 V. Its absolute minimum recommended input voltage is 4.5 V per the datasheet's Recommended Operating Conditions. Below this, internal biasing fails, UVLO activates, and regulation ceases. For sub-4.5 V inputs, consider alternatives like TPS62130 or LM2678, as LM22675MRX-5.0/NOPB lacks functionality in that range.
Does LM22675MRX-5.0/NOPB require an external bootstrap diode?
No, LM22675MRX-5.0/NOPB does not require an external bootstrap diode. It integrates a bootstrap diode internally between the BOOT and SW pins, simplifying layout and reducing component count. Only a 10 nF ceramic capacitor between BOOT and SW is required - no additional diode or charge pump circuitry is needed for normal operation.
What is the thermal resistance (RθJA) of LM22675MRX-5.0/NOPB in its HSOP-8 package?
The junction-to-ambient thermal resistance (RθJA) of LM22675MRX-5.0/NOPB is 60°C/W when mounted on 1 in² of 2-oz copper connected to the exposed pad. This value assumes optimal PCB layout with thermal vias under the pad. RθJA can vary from 42°C/W (with aggressive copper pour) to 115°C/W (minimal copper), so thermal design must verify actual board layout meets target junction temperature limits.
Is LM22675MRX-5.0/NOPB pin-compatible with LM22675-ADJ variants?
Yes, LM22675MRX-5.0/NOPB is pin-compatible with LM22675-ADJ variants in the same HSOP-8 package. Both share identical pinout (BOOT, EN, SW, FB, GND, VIN, NC×2, EP), allowing direct PCB reuse. However, the FB pin function differs: LM22675MRX-5.0/NOPB connects FB directly to VOUT, while LM22675-ADJ requires an external resistor divider - requiring minor schematic revision for feedback network.
LM22675MRX-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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
LM22675MRX-5.0/NOPB FAQ
1.How can I place an order for LM22675MRX-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM22675MRX-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 LM22675MRX-5.0/NOPB reliable?
The price and inventory of LM22675MRX-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 LM22675MRX-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM22675MRX-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM22675MRX-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM22675MRX-5.0/NOPB?
LM22675MRX-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM22675MRX-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 LM22675MRX-5.0/NOPB?
For technical support, including LM22675MRX-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM22675MRX-5.0/NOPB requirements.
6.How does Aetrix verify that LM22675MRX-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM22675MRX-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 LM22675MRX-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM22675MRX-5.0/NOPB?
All LM22675MRX-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM22675MRX-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 LM22675MRX-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM22675MRX-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM22675MRX-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…
