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LM22677QTJE-5.0/NOPB
Texas Instruments
IC REG BUCK 5V 5A TO263-7
52852 Pcs New Original In Stock
Buck Switching Regulator IC Positive Fixed 5V 1 Output 5A TO-263-7 Thin
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5.0 / 5.0
- (397 Ratings)
LM22677QTJE-5.0/NOPB
Product Overview
1306499
DiGi Electronics Part Number
LM22677QTJE-5.0/NOPB-DGManufacturer
Texas Instruments
LM22677QTJE-5.0/NOPB
Description
IC REG BUCK 5V 5A TO263-7Inventory
52852 Pcs New Original In Stock
Buck Switching Regulator IC Positive Fixed 5V 1 Output 5A TO-263-7 Thin
Quantity
Minimum 1
Minimum 1
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LM22677QTJE-5.0/NOPB Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - DC DC Switching Regulators
Packaging
Cut Tape (CT)
Series
SIMPLE SWITCHER®
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
5A
Frequency - Switching
500kHz
Synchronous Rectifier
No
Operating Temperature
-40°C ~ 125°C (TJ)
Grade
Automotive
Qualification
AEC-Q100
Mounting Type
Surface Mount
Package / Case
TO-263-7 Thin
Supplier Device Package
TO-263-7 Thin
Base Product Number
LM22677
Datasheet & Documents
HTML Datasheet
LM22677QTJE-5.0/NOPB-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
-LM22677QTJE
*LM22677QTJE-5.0/NOPB
296-LM22677QTJE-5.0/NOPBCT
LM22677QTJE-5.0/NOPBCT
LM22677QTJE-5.0/NOPBTR-DG
296-LM22677QTJE-5.0/NOPBDKR
TEXTISLM22677QTJE-5.0/NOPB
296-LM22677QTJE-5.0/NOPBTR
2156-LM22677QTJE-5.0/NOPB-TI
LM22677QTJE-5.0/NOPBTR
-LM22677QTJE-5.0-NDR
LM22677QTJE-5.0/NOPBDKR
LM22677QTJE-5.0/NOPBDKR-DG
LM22677QTJE-5.0/NOPBCT-DG
LM22677QTJE50NOPB
Standard Package
250
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
丁寧なカスタマーサービスに感謝しています。迅速な配送もありがたかったです。
de desembre 02, 2025
配送予定の時間もきちんと守られていました。
de desembre 02, 2025
I value their consistent dependability and the helpfulness of their staff.
de desembre 02, 2025
The combination of cost savings and swift shipping makes shopping with DiGi Electronics a joy.
de desembre 02, 2025
I have received consistent quality and attentive support from DiGi Electronics.
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Frequently Asked Questions (FAQ)
What are the key design constraints when replacing a legacy linear regulator with the LM22677QTJE-5.0/NOPB in a high-vibration automotive environment?
When replacing a linear regulator with the LM22677QTJE-5.0/NOPB in high-vibration automotive applications, ensure mechanical stability of the TO-263-7 Thin package by using proper PCB pad design, thermal vias, and conformal coating. The device’s AEC-Q100 qualification and -40°C to 125°C operating range make it suitable, but switching noise and EMI must be carefully managed—use a Pi filter at the input and keep SW node traces short to avoid coupling. Unlike linear regulators, the buck topology introduces high di/dt loops; improper layout can cause instability or radiated emissions that fail CISPR 25 tests.
Can the LM22677QTJE-5.0/NOPB be safely substituted for the LM2596HVS-5.0 in a 24V industrial system, and what risks should I evaluate?
While both are 5V fixed-output buck regulators, substituting the LM2596HVS-5.0 with the LM22677QTJE-5.0/NOPB requires careful evaluation: the LM22677 supports up to 42V input (vs. 60V for LM2596HVS), so it's acceptable in 24V systems, but lacks synchronous rectification, leading to higher power loss at light loads. Additionally, the LM22677 operates at 500kHz, which may require different output filtering than the LM2596’s 150kHz. Verify inductor saturation current and ensure the chosen inductor (e.g., Coilcraft XAL6060) supports 5A with low DCR. Also, confirm PCB thermal relief matches the TO-263-7 Thin footprint to avoid solder joint fatigue.
How do I mitigate thermal runaway risks when operating the LM22677QTJE-5.0/NOPB near its 5A limit in a sealed automotive enclosure with limited airflow?
To prevent thermal runaway in confined spaces, calculate worst-case power dissipation (P = (Vin - Vout) × Iout + switching losses) and ensure junction temperature stays below 125°C. Use a high-thermal-conductivity PCB (e.g., 2-layer with 2 oz copper and thermal vias under the tab) and consider a small heatsink if ambient exceeds 85°C. The LM22677QTJE-5.0/NOPB has no built-in thermal shutdown below 150°C, so external monitoring or derating above 4A continuous is recommended. Measure tab temperature in situ—exceeding 110°C may indicate insufficient cooling, risking long-term reliability.
What layout practices are critical to avoid instability when integrating the LM22677QTJE-5.0/NOPB with a ceramic input capacitor in a space-constrained PCB design?
In compact layouts, placing the input ceramic capacitor (e.g., 10µF, X7R, 50V) more than 5mm from the VIN and GND pins of the LM22677QTJE-5.0/NOPB can introduce parasitic inductance, causing voltage spikes and erratic switching. Keep the high-current loop (VIN → Cin → GND → IC) as small as possible, using wide traces or copper pours. Avoid routing sensitive feedback traces near the SW node. A poor layout can trigger subharmonic oscillation despite correct compensation—use a 1kΩ resistor in series with the feedback divider to dampen high-frequency ringing if needed.
Is the LM22677QTJE-5.0/NOPB a reliable drop-in replacement for the MP2307DN in a 12V-to-5V automotive infotainment system, and what hidden failure modes should I consider?
Although both deliver 5V at 3A+, the LM22677QTJE-5.0/NOPB is not a direct drop-in for the MP2307DN due to differing control schemes (voltage-mode vs. current-mode) and enable logic. The MP2307DN has tighter line regulation and better transient response, while the LM22677’s 500kHz switching may interfere with AM radio bands—add an LC filter if audio noise is observed. Also, the LM22677 lacks integrated soft-start control; without an external RC delay, inrush current during startup could stress input connectors. Verify enable threshold compatibility and ensure the feedback network matches the fixed 5V output to avoid unintended regulation errors.
Quality Assurance (QC)
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LM22677QTJE-5.0/NOPB CAD Models
Texas Instruments LM22677QTJE-5.0/NOPB PCB symbols & footprints
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