My Inquiry
My Account
Texas Instruments LM22670TJE-5.0/NOPB
- Part No.:
- LM22670TJE-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-7 Thin
- Datasheet:
-
LM22670TJE-5.0/NOPB.pdf
- Description:
- IC REG BUCK 5V 3A TO263-7
- Quantity:
- Payment:
- Shipping:
Inventory:5,485
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM22670TJE-5.0/NOPB from Texas Instruments is a 42-V input, 3-A synchronous step-down DC/DC regulator in HSOP-8 PowerPAD™ package, delivering fixed 5.0 V output with ±1.5% feedback reference accuracy, 500 kHz default switching frequency, and integrated boot-strap diode for high-side gate drive. It operates across –40°C to 125°C junction temperature and supports industrial power rails converting 12 V or 24 V inputs to stable 5 V logic supplies.
For engineers reviewing the LM22670TJE-5.0/NOPB datasheet, LM22670TJE-5.0/NOPB pinout, LM22670TJE-5.0/NOPB application, or LM22670TJE-5.0/NOPB equivalent, key selection criteria include its 4.5–42 V wide VIN range, internal voltage-mode compensation, thermal shutdown protection, precision enable threshold (1.6 V typ), and compatibility with low-ESR ceramic output capacitors without external loop components.
Technical Context
The LM22670TJE-5.0/NOPB implements a voltage-mode PWM controller with input voltage feedforward to stabilize loop gain against VIN variation, enabling optimized transient response. Its internal Type III compensation network is pre-tuned for fixed 5 V output operation and eliminates need for external compensation components.
It integrates a 120 mΩ N-channel MOSFET switch (PFM package), bootstrap capacitor charging circuitry with minimum off-time enforcement (100 ns), and precision enable with 0.6 V hysteresis. The RT/SYNC pin supports three modes: internal 500 kHz oscillator, resistor-adjustable 200 kHz–1 MHz, or external synchronization - but not simultaneous adjustment and sync.
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, and 36 V industrial/commercial rails without pre-regulation. |
| Output Voltage | Fixed 5.0 V ±1.5% - eliminates external feedback divider, reducing BOM count and layout sensitivity. |
| Max Output Current | 3 A continuous - enables single-regulator supply for FPGA I/O banks, microcontroller cores, or multi-rail PMIC front-ends. |
| Switching Frequency | 500 kHz default (±20%) - balances efficiency, EMI, and external component size; adjustable via RT/SYNC resistor. |
| RDS(ON) | 120 mΩ (PFM package) - limits conduction loss at full load; validated over –40°C to 125°C junction range. |
| Quiescent Current | 3.4 mA typical at VFB = 5 V - ensures low no-load power draw in always-on subsystems. |
| Enable Threshold | 1.6 V typical falling threshold with 0.6 V hysteresis - enables clean sequencing with resistor-divider control from auxiliary rails. |
Pinout & Package
LM22670TJE-5.0/NOPB uses the HSOP-8 PowerPAD™ package (4.89 mm × 3.90 mm) with exposed thermal pad connected to GND for enhanced heat dissipation. RθJA = 60°C/W with 1 in² copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch Node | High-current drain of internal N-MOSFET; connects to inductor and bootstrap capacitor negative terminal. |
| 2 VIN | Main Input Supply | Primary power input (4.5–42 V); feeds internal LDO, gate driver, and bias circuits. |
| 3 BOOT | Bootstrap Supply | Connects to SW and external 10 nF ceramic capacitor; provides floating gate drive voltage for high-side switch. |
| 4 GND | Power Ground | System return path for input/output currents and internal circuitry; tied to exposed pad. |
| 5 RT/SYNC | Oscillator Control | Selects operating mode: floating = 500 kHz internal clock; resistor-to-GND = adjustable frequency; external clock = sync mode. |
| 6 FB | Feedback Input | Monitors regulated 5 V output internally; no external resistor divider required for this fixed-output variant. |
| 7 EN | Enable Control | Logic-level ON/OFF control; 1.6 V falling threshold enables precise power sequencing with minimal external components. |
| 8 EP | Exposed Pad | Thermal and electrical connection to GND; mandatory PCB copper connection for thermal performance and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated voltage-mode control | Eliminates external compensation network - reduces design time and layout risk for 5 V output applications. |
| Integrated bootstrap diode | Removes need for external Schottky diode in boot circuit - simplifies bill-of-materials and improves reliability. |
| Stable with ceramic output capacitors | Supports low-ESR MLCCs (e.g., 22 µF X5R) - avoids electrolytic capacitors, enabling compact, long-life designs. |
| 500 µs internal soft-start | Prevents inrush current and output overshoot during power-up - protects downstream loads without external timing components. |
| Precision enable with UVLO | Combines 1.6 V enable threshold and 4.3 V input UVLO - allows robust start-up control and battery discharge prevention. |
Applications
| Industrial PLC I/O Module | Telecom Line Card Power |
|---|---|
|
Use Scenario: Converting 24 V backplane rail to isolated 5 V for digital I/O drivers and sensor interfaces in programmable logic controllers. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator providing clean, sequenced 5 V supply with thermal fault protection. Use Value: Delivers 3 A at >90% efficiency with no external compensation, meeting IEC 61000-4-2/4-4 immunity requirements via stable ceramic filtering. |
Use Scenario: Generating 5 V for Ethernet PHYs, SerDes, and management microcontrollers on telecom line cards powered from –48 V DC via intermediate 12 V bus. IC Role / Device Role / Timing Role: Secondary buck stage regulating 12 V intermediate rail to tightly controlled 5 V logic supply. Use Value: Fixed 5 V output with ±1.5% accuracy ensures compliance with IEEE 802.3 compliance margins; 500 kHz switching avoids interference with 10/100/1000BASE-T signaling bands. |
| Automotive Body Control Module | Embedded Vision System |
|
Use Scenario: Powering MCU, CAN transceivers, and LED drivers from vehicle 12 V battery rail subject to load dump and cold-crank conditions. IC Role / Device Role / Timing Role: Main system regulator with wide-input tolerance and precision enable for ignition-synchronized startup. Use Value: 42 V absolute max rating withstands ISO 7637-2 pulse 5a (load dump); –40°C to 125°C operation supports under-hood placement. |
Use Scenario: Supplying 5 V to image sensors, ISP processors, and USB 2.0 interfaces in smart cameras and edge AI vision systems. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator with low-noise output for analog sensor biasing and digital core logic. Use Value: Internal soft-start and low output ripple (<15 mVpp) prevent image artifacts; HSOP-8 PowerPAD™ enables thermal management in space-constrained 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 |
|---|---|---|---|
| LM22671TJE-5.0/NOPB | Same pinout and features, but rated for 45 V max input and includes improved thermal performance (RθJA = 55°C/W). | Preferred for new designs requiring higher input voltage margin or extended thermal headroom in high-ambient environments. | Select LM22671TJE-5.0/NOPB when operating near 42 V VIN or ambient temperatures exceed 85°C. |
| TPS54340DDAR | 42 V, 3.5 A buck with adjustable frequency (100 kHz–2.5 MHz), but requires external compensation and boot diode. | Better suited for designs needing >500 kHz operation or tighter output voltage adjustability beyond fixed 5 V. | Choose TPS54340DDAR only if frequency flexibility above 1 MHz or adjustable VOUT is mandatory; adds design complexity. |
Compared with LM22670TJE-5.0/NOPB, LM22671TJE-5.0/NOPB offers higher input voltage margin and lower thermal resistance, while TPS54340DDAR trades simplicity for wider frequency range and adjustable output - making LM22670TJE-5.0/NOPB optimal for cost-sensitive, fixed-5V industrial applications where ease-of-use and proven stability are prioritized.
Availability
LM22670TJE-5.0/NOPB is available at Aetrix Electronics and suitable for industrial control, telecom power conversion, and embedded vision systems requiring stable component supply, long-term lifecycle support, and automotive-grade reliability validation.
Supply support for LM22670TJE-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 specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability DC/DC conversion solutions.
LM22670TJE-5.0/NOPB belongs to TI's SIMPLE SWITCHER® family - engineered for rapid, robust power design in industrial, automotive, and communications equipment where minimal external components and guaranteed stability are critical.
FAQ
What is the maximum input voltage rating for LM22670TJE-5.0/NOPB?
The LM22670TJE-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 direct use with 24 V and 36 V industrial rails and tolerance for transient overvoltages up to load dump levels defined in ISO 7637-2. Operation beyond 42 V risks permanent damage and voids warranty compliance.
Does LM22670TJE-5.0/NOPB require an external feedback resistor divider?
No, LM22670TJE-5.0/NOPB does not require an external feedback resistor divider because it is the fixed 5.0 V output variant. The FB pin is internally connected to the 5.0 V regulation node, and the ±1.5% reference accuracy is maintained across temperature and line/load conditions without external components - a key differentiator from the adjustable -ADJ version.
Can LM22670TJE-5.0/NOPB synchronize to an external clock?
Yes, LM22670TJE-5.0/NOPB can synchronize to an external clock via the RT/SYNC pin, provided the external signal meets specifications: rising-edge triggered, 1.75 V synchronization threshold, amplitude compliant with VSYNC min/max values, and frequency between 500 kHz and 1 MHz. Synchronization is latched at startup and reverts to 500 kHz internal clock if the external signal is lost during operation.
What thermal performance can be expected from LM22670TJE-5.0/NOPB in HSOP-8 PowerPAD™ package?
LM22670TJE-5.0/NOPB in HSOP-8 PowerPAD™ achieves RθJA = 60°C/W with 1 in² PCB copper pour, dropping to ~42–48°C/W with optimized thermal vias and 2–3 in² copper. At 3 A load and 12 V input, junction temperature rise remains within safe limits up to 85°C ambient - verified by TI's AN-1797 thermal guidelines and supported by the exposed pad's direct GND connection.
Is LM22670TJE-5.0/NOPB qualified for automotive applications?
LM22670TJE-5.0/NOPB is not automotive-qualified; it is the commercial-grade variant. For automotive use, TI offers the LM22670-Q1 (AEC-Q100 Grade 1, –40°C to +125°C), which shares identical electrical specs and pinout but includes additional qualification testing and traceability. LM22670TJE-5.0/NOPB is intended for industrial, telecom, and embedded applications outside safety-critical automotive domains.
LM22670TJE-5.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- TO-263-7 Thin
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263-7 Thin
LM22670TJE-5.0/NOPB FAQ
1.How can I place an order for LM22670TJE-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM22670TJE-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 LM22670TJE-5.0/NOPB reliable?
The price and inventory of LM22670TJE-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 LM22670TJE-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM22670TJE-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM22670TJE-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM22670TJE-5.0/NOPB?
LM22670TJE-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM22670TJE-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 LM22670TJE-5.0/NOPB?
For technical support, including LM22670TJE-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM22670TJE-5.0/NOPB requirements.
6.How does Aetrix verify that LM22670TJE-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM22670TJE-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 LM22670TJE-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM22670TJE-5.0/NOPB?
All LM22670TJE-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM22670TJE-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 LM22670TJE-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM22670TJE-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM22670TJE-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…
