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LM2592HVS-ADJ
Texas Instruments
IC REG BUCK ADJ 2A DDPAK
5000263 Pcs New Original In Stock
Buck Switching Regulator IC Positive Adjustable 1.2V 1 Output 2A TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
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5.0 / 5.0
- (504 Ratings)
LM2592HVS-ADJ
Product Overview
1304144
DiGi Electronics Part Number
LM2592HVS-ADJ-DGManufacturer
Texas Instruments
LM2592HVS-ADJ
Description
IC REG BUCK ADJ 2A DDPAKInventory
5000263 Pcs New Original In Stock
Buck Switching Regulator IC Positive Adjustable 1.2V 1 Output 2A TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Quantity
Minimum 1
Minimum 1
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LM2592HVS-ADJ Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - DC DC Switching Regulators
Packaging
Tube
Series
SIMPLE SWITCHER®
Product Status
Last Time Buy
Function
Step-Down
Output Configuration
Positive
Topology
Buck
Output Type
Adjustable
Number of Outputs
1
Voltage - Input (Min)
4.5V
Voltage - Input (Max)
60V
Voltage - Output (Min/Fixed)
1.2V
Voltage - Output (Max)
57V
Current - Output
2A
Frequency - Switching
150kHz
Synchronous Rectifier
No
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Supplier Device Package
TO-263 (DDPAK-5)
Base Product Number
LM2592
Datasheet & Documents
Manufacturer Product Page
LM2592HVS-ADJ Specifications
HTML Datasheet
LM2592HVS-ADJ-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
LM2592HVS-ADJ-DG
TEXTISLM2592HVS-ADJ
296-37721-5
2156-LM2592HVS-ADJ-TI
Standard Package
45
Alternative Parts
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MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
発送がいつもスムーズで、梱包も丁寧です。
de desembre 02, 2025
Every purchase I’ve made has shown consistent excellence in quality, making me a loyal customer.
de desembre 02, 2025
The craftsmanship is impeccable, reflecting high standards of manufacturing.
de desembre 02, 2025
We appreciate their proactive approach in offering support whenever we need it.
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Frequently Asked Questions (FAQ)
What are the key reliability risks when using the LM2592HVS-ADJ in high-vibration industrial environments, and how does its TO-263 package affect long-term solder joint integrity?
The LM2592HVS-ADJ's TO-263 (DDPAK-5) surface-mount package is susceptible to mechanical stress in high-vibration applications due to its relatively large mass and limited lead compliance. Over time, repeated thermal cycling combined with vibration can induce fatigue cracks in solder joints—especially at the thermal pad. To mitigate this, use a robust PCB layout with adequate thermal vias under the tab, apply conformal coating to reduce mechanical stress transfer, and consider underfill or potting for mission-critical systems. Additionally, avoid mounting the device near board edges or unsupported spans longer than 25 mm to minimize flexure-induced failures.
Can the LM2592HVS-ADJ safely replace an LM2596HVS-ADJ in an existing 48V-to-12V/2A design without modifying the feedback network or output capacitors?
While both are adjustable buck regulators from the SIMPLE SWITCHER® family, direct replacement of the LM2596HVS-ADJ with the LM2592HVS-ADJ is not recommended without validation. The LM2592HVS-ADJ has a lower peak current limit (~3A vs ~4A) and different internal compensation, which may affect transient response and stability under load steps. Although both operate at 150 kHz and support similar input/output ranges, the LM2592HVS-ADJ’s reduced current capability increases risk of premature current limiting during startup or overload. Re-evaluate the feedback resistor values and ensure output capacitance meets the LM2592HVS-ADJ’s stability criteria—particularly ESR and capacitance value—to avoid subharmonic oscillation or poor load regulation.
How does the lack of synchronous rectification in the LM2592HVS-ADJ impact efficiency and thermal performance in low-output-voltage applications like 3.3V from a 24V input?
The LM2592HVS-ADJ uses a non-synchronous buck topology with an external Schottky diode for freewheeling, which results in significantly higher conduction losses at low output voltages. In a 24V-to-3.3V conversion, the duty cycle is ~14%, meaning the diode conducts over 85% of the switching cycle, leading to dominant I²R and Vf losses. This can reduce efficiency by 8–12% compared to a synchronous alternative like the TPS54260. Expect higher junction temperatures under continuous 2A load—use a heatsink or large copper pour on the PCB. For designs where thermal headroom is tight or battery life critical, consider migrating to a synchronous converter despite the LM2592HVS-ADJ’s simplicity and cost advantage.
Given that the LM2592HVS-ADJ is in Last Time Buy status, what long-term supply chain risks should designers consider, and are there pin-compatible drop-in replacements with better lifecycle support?
The LM2592HVS-ADJ’s Last Time Buy status signals end-of-life risk, making it unsuitable for new designs requiring 5+ year production lifecycles. While LM2592HVS-ADJ/NOPB is a RoHS-compliant variant, it shares the same obsolescence timeline. There is no true pin-compatible drop-in replacement, but the Texas Instruments TPS54360 (in DDPAK-7) offers similar 60V input, 3.5A output capability with synchronous rectification and enhanced features. Alternatively, the MP4420 from Monolithic Power Systems provides a compact, modern alternative with better efficiency and active supply. Plan for last-time purchase stocking or redesign using a current-generation part to avoid future line-down scenarios.
What layout practices are critical to prevent instability or EMI issues when designing with the LM2592HVS-ADJ in a space-constrained 2-layer PCB?
In 2-layer PCBs, poor layout is the leading cause of instability and radiated EMI with the LM2592HVS-ADJ. Minimize the high-di/dt loop formed by the input capacitor, IC, and diode by placing C_IN within 5 mm of VIN and GND pins. Use a solid ground plane on the bottom layer and connect the thermal tab directly to it with multiple vias (≥6). Keep the feedback trace away from the inductor and switch node to avoid noise coupling—route it differentially if possible. Avoid splitting the ground plane under the regulator. Even with limited layers, a well-placed 10µF ceramic input cap (X7R, 100V rating) and low-ESR output cap (e.g., 22µF ceramic + 100µF electrolytic) will stabilize the control loop and reduce output ripple below 50mVpp under 2A load.
Quality Assurance (QC)
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LM2592HVS-ADJ CAD Models
Texas Instruments LM2592HVS-ADJ PCB symbols & footprints
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