LM22676QTJ-ADJ/NOPB Texas Instruments Integrated Circuit (Other) In Stock
The LM22676QTJ-ADJ/NOPB is a 3 A SIMPLE SWITCHER step-down voltage regulator with adjustable output as low as 1.285 V, accepting 4.5 V to 42 V input, featuring precision enable in a compact TO-263-7 package for industrial and automotive designs.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- LM22676QTJ-ADJ/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.4800(MOQ 500)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 3 A continuous output current with 4.5 V to 42 V wide input range, enabling single-IC regulation from 12 V automotive or 24 V industrial buses down to sub-2 V processor cores
- Adjustable output voltage as low as 1.285 V set by two external resistors, covering the broadest output range needed for modern DSPs, FPGAs, and microcontrollers
- Precision enable input with a well-defined threshold, allowing accurate power sequencing or system-level supervisory control without extra comparators
- AEC-Q100-qualified for automotive use, rated -40°C to +125°C, and housed in a thermally enhanced TO-263-7 package for minimal external heatsinking
Applications
The LM22676QTJ-ADJ/NOPB targets automotive ECUs, industrial motor drives, and distributed power architectures where a rugged 3 A buck regulator must accept wide input swings from unregulated 12 V or 24 V rails while delivering precisely regulated core voltages down to 1.285 V. Its precision enable pin and AEC-Q100 qualification also make it suitable for functional-safety power trees in ADAS modules and factory automation controllers operating across the full -40°C to +125°C temperature range.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | ALSO HAS ADJUSTABLE OUTPUT VOLTAGE AS LOW AS 1.285V |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 42V |
| Input Voltage-Min | 4.5V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PSSO-G7 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 3A |
| Output Voltage-Max | 37V |
| Output Voltage-Min | 1.285V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 500kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM22676QTJ-ADJ/NOPB:
Switching Regulator, Voltage-mode, 3A, 500kHz Switching Freq-Max, PSSO7
Switching Regulator, Voltage-mode, 3A, 500kHz Switching Freq-Max, PSSO7
Frequently Asked Questions
What is the maximum input voltage LM22676QTJ-ADJ/NOPB can handle, and does that cover 24 V industrial bus applications?
The LM22676QTJ-ADJ/NOPB accepts up to 42 V at its input, which comfortably covers 24 V nominal industrial bus voltages that can surge to 36 V during load dump or transient events. This margin makes the device suitable for direct connection to unregulated 24 V rails in PLC systems, motor drive controllers, and building automation equipment without an additional bulk capacitor clamp.
How low can LM22676QTJ-ADJ/NOPB regulate its output, and how is the target voltage set?
The LM22676QTJ-ADJ/NOPB regulates output voltage as low as 1.285 V, determined by a resistor divider from the output to the feedback pin referenced to an internal 1.285 V reference. Selecting two standard resistors from the formula in the datasheet sets any target between 1.285 V and approximately 35 V, covering core voltages for modern processors, DDR memory, and analog supply rails.
How does the precision enable pin on LM22676QTJ-ADJ/NOPB differ from a basic enable, and why does that matter for power sequencing?
The precision enable threshold on LM22676QTJ-ADJ/NOPB is tightly defined, typically 1.22 V rising and 1.10 V falling. This accurate threshold lets a supervisory circuit or resistor divider from a controlled rail precisely sequence power-on and power-off order, which is mandatory in multi-rail FPGA and DSP designs where core rails must stabilize before I/O rails within a few milliseconds.
For a TO-263-7 footprint, how much copper area is typically needed to keep LM22676QTJ-ADJ/NOPB within its thermal limits at full 3 A load?
The TO-263-7 package has a thermal resistance of approximately 5°C/W junction-to-case. At 3 A output with a 1 V dropout, power dissipation approaches 3 W, yielding a junction temperature rise of about 15°C above case temperature. A 2 cm² exposed copper pad on the PCB bottom typically keeps junction temperature below +125°C at +85°C ambient, but larger pours of 4 cm² to 6 cm² are preferred for worst-case automotive thermal margins.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 500+ | $2.7900 | $1395.00 |
| 1000+ | $2.6400 | $2640.00 |
| 10000+ | $2.4800 | $24800.00 |
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