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Texas Instruments LM2592HVSX-ADJ/NOPB
- Part No.:
- LM2592HVSX-ADJ/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
LM2592HVSX-ADJ/NOPB.pdf
- Description:
- IC REG BUCK ADJ 2A TO263
- Quantity:
- Payment:
- Shipping:
Inventory:1,258
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Product details
Overview
LM2592HVSX-ADJ/NOPB from Texas Instruments is a monolithic nonsynchronous step-down DC-DC converter IC designed for high-voltage input applications, delivering up to 2 A load current with ±4% output voltage accuracy across line and load, 150-kHz fixed-frequency operation, and input voltage support up to 60 V. It serves as a primary buck regulator in industrial power supplies, battery-powered systems, and distributed power architectures requiring adjustable output from 1.2 V to 57 V.
For engineers reviewing the LM2592HVSX-ADJ/NOPB datasheet, LM2592HVSX-ADJ/NOPB pinout, LM2592HVSX-ADJ/NOPB application, or LM2592HVSX-ADJ/NOPB equivalent, key selection criteria include its 2-A switch current limit, 90-μA standby quiescent current, ON/OFF control interface, thermal shutdown protection, and compatibility with standard 5-pin TO-220 and DDPAK packages.
Technical Context
The LM2592HVSX-ADJ/NOPB integrates a 150-kHz oscillator, internal frequency compensation, and a 2-A N-channel MOSFET switch with 1.3-V typical saturation voltage. Its feedback loop senses output voltage via an external resistive divider referenced to a precise 1.23-V internal reference, enabling stable regulation across 1.2 V–57 V.
It operates in continuous or discontinuous conduction mode depending on load and inductor value, supports delayed start-up and undervoltage lockout via the ON/OFF pin, and features two-stage current limiting plus thermal shutdown for fault protection - all without requiring external timing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 60 V - supports wide-range industrial and automotive inputs without pre-regulation |
| Output Current | Up to 2 A DC - sufficient for powering microcontrollers, sensors, and analog circuitry directly |
| Feedback Reference | 1.23 V ±2.7% - enables accurate adjustable output setting using standard resistor tolerances |
| Switching Frequency | 150 kHz (±15%) - allows use of compact, low-cost inductors and capacitors |
| Standby Current | 90 μA typical - minimizes battery drain in always-on or low-power wake-up systems |
| Current Limit | 2.4 A to 3.7 A peak - provides robust overload protection while supporting transient loads |
| Thermal Shutdown | Activates at 150°C junction temperature - prevents permanent damage during sustained overloads or poor heatsinking |
Pinout & Package
LM2592HVSX-ADJ/NOPB is supplied in a 5-pin TO-220 (NDH) package with through-hole mounting and integrated heat sink tab. The package measures 14.986 mm × 10.16 mm and supports direct PCB heatsinking via the exposed tab connected to Pin 3 (Ground).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: +VIN | Power Input | Accepts 4.5–60 V DC; requires local low-ESR bypass capacitor to handle high di/dt switching currents |
| 2: Output | Switch Node | Drives external catch diode and inductor; swings between ~(+VIN − 1.3 V) and −0.5 V during operation |
| 3: Ground | Reference & Thermal Path | Common return for all signals and primary thermal conduction path to PCB copper or heatsink |
| 4: Feedback | Regulation Sense | Compares divided output voltage to 1.23-V internal reference; bias current ≤50 nA minimizes divider error |
| 5: ON/OFF | Control Input | Logic-level shutdown: ≥2 V disables regulator (90 μA IQ); ≤0.6 V or floating enables operation |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Output Range | 1.2 V to 57 V - configurable via external resistor divider without changing IC, supporting diverse system rails |
| Integrated Switch | 2-A N-channel MOSFET with 1.3-V saturation - eliminates need for external high-side switch and reduces BOM count |
| Fixed 150-kHz Oscillator | No external timing components required - simplifies layout and improves EMI predictability vs variable-frequency designs |
| ON/OFF Control Interface | CMOS-compatible logic input with 1.3-V threshold - enables clean enable/disable sequencing with microcontrollers or power supervisors |
| Thermal & Current Protection | Auto-recovering thermal shutdown and two-stage current limit - ensures safe operation under short-circuit or overheating conditions |
Applications
| Industrial Power Supply | Battery-Powered Equipment |
|---|---|
Use Scenario: Converting 24-V or 48-V DC distribution bus to 3.3-V or 5-V logic supply in PLC I/O modules or motor drives. IC Role / Device Role / Timing Role: Primary step-down regulator providing isolated, regulated DC output with high efficiency and minimal external components. Use Value: Enables compact, reliable power conversion at up to 81% efficiency (at 12-V input), reducing thermal load and board space versus linear regulators. | Use Scenario: Regulating lithium-ion battery pack (up to 58.8 V fully charged) to 12-V or 15-V intermediate rail for telemetry radios or sensor hubs. IC Role / Device Role / Timing Role: High-input-voltage buck controller managing wide VIN variation while maintaining tight output regulation during discharge cycles. Use Value: Supports full battery voltage range without input pre-regulation; 90-μA standby current extends shelf life and sleep-mode runtime. |
| Automotive Aftermarket Systems | Positive-to-Negative Converter |
Use Scenario: Powering infotainment head units or ADAS cameras from 12-V vehicle battery with load dump tolerance up to 60 V. IC Role / Device Role / Timing Role: Input-robust DC-DC converter handling cold-crank, load-dump, and reverse-polarity protected inputs. Use Value: Withstands 60-V absolute max input and includes thermal/current limiting - eliminates need for additional TVS or fuse coordination in many cases. | Use Scenario: Generating −5-V or −12-V rail from +12-V or +24-V source for op-amp biasing or analog signal conditioning. IC Role / Device Role / Timing Role: Buck-derived inverting topology using internal switch and external diode/inductor to produce negative output. Use Value: Leverages same IC for both buck and inverting functions - reduces inventory and design reuse; supports outputs beyond input magnitude (e.g., −57 V from +24 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2596HV-ADJ/NOPB | Higher 3-A output current, 150-kHz frequency, wider 4.5–60-V input, but larger TO-220-5 package footprint | Preferred where higher output current or improved thermal margin is required; not drop-in due to different pinout and higher IQ | Select when >2-A load capability is needed and board layout allows larger thermal pad area |
| LM5164QDDARQ1 | 40-V max input, 1-A output, 1-MHz switching, integrated high-side FET and bootstrap diode, AEC-Q100 qualified | Suitable for automotive-grade designs requiring qualification and higher frequency; lacks 60-V input and 2-A rating of LM2592HVSX-ADJ/NOPB | Choose for automotive production where qualification and reliability certification are mandatory |
Compared with LM2596HV-ADJ/NOPB, LM2592HVSX-ADJ/NOPB offers lower cost and smaller solution size for 2-A applications; compared with LM5164QDDARQ1, it delivers higher input voltage tolerance and output current but lacks automotive qualification and high-frequency operation.
Availability
LM2592HVSX-ADJ/NOPB is available at Aetrix Electronics and suitable for industrial power supplies, battery management systems, and automotive aftermarket electronics requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LM2592HVSX-ADJ/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 company specializing in analog, embedded processing, and power management technologies, with decades of leadership in switching regulator design and manufacturing.
The LM2592HV product line was developed to deliver simple, robust, high-voltage buck conversion for industrial, telecom, and transportation applications where reliability, wide input range, and minimal external components are critical.
FAQ
What is the maximum input voltage rating for LM2592HVSX-ADJ/NOPB?
The LM2592HVSX-ADJ/NOPB has an absolute maximum input voltage rating of 63 V, with recommended operating range from 4.5 V to 60 V. Operation above 60 V risks exceeding safe operating area limits and may trigger internal protection circuits. For sustained 60-V operation, ensure adequate PCB copper area and thermal management per TI's thermal metrics for the NDH package.
How does the feedback pin (Pin 4) function in LM2592HVSX-ADJ/NOPB?
The feedback pin of LM2592HVSX-ADJ/NOPB senses the output voltage via an external resistor divider and compares it to an internal 1.23-V reference. Its bias current is ≤50 nA, minimizing divider error. When used with a feedforward capacitor (CFF), it adds phase lead for stability at high output voltages - but requires a Schottky clamp diode to ground if input exceeds 40 V to prevent negative voltage spikes.
Can LM2592HVSX-ADJ/NOPB be used in a positive-to-negative inverting configuration?
Yes, LM2592HVSX-ADJ/NOPB supports positive-to-negative conversion by bootstrapping the ground pin to the negative output. The regulator regulates the inverted voltage via the feedback network. Maximum input+|output| voltage must remain ≤60 V; peak switch current must stay below 2.3 A minimum current limit. External diodes and careful layout are required for stability and noise isolation.
What is the purpose of the ON/OFF pin (Pin 5) on LM2592HVSX-ADJ/NOPB?
The ON/OFF pin of LM2592HVSX-ADJ/NOPB provides logic-level enable/disable control: driving it ≥2 V places LM2592HVSX-ADJ/NOPB in shutdown mode (IQ ≈90 μA), while leaving it floating or pulling it ≤0.6 V enables normal operation. It supports delayed start-up, undervoltage lockout, and system-level power sequencing - with input current <15 μA in either state.
Does LM2592HVSX-ADJ/NOPB require external compensation components?
No, LM2592HVSX-ADJ/NOPB includes internal frequency compensation optimized for standard buck configurations using typical inductor and capacitor values. No external compensation network is needed for stable operation with recommended external components (e.g., 33–47 μH inductor, 220 μF output capacitor). Layout and component ESR remain critical for loop stability, especially when using low-ESR ceramic outputs.
LM2592HVSX-ADJ/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263 (DDPAK-5)
LM2592HVSX-ADJ/NOPB FAQ
1.How can I place an order for LM2592HVSX-ADJ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2592HVSX-ADJ/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 LM2592HVSX-ADJ/NOPB reliable?
The price and inventory of LM2592HVSX-ADJ/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2592HVSX-ADJ/NOPB is usually 5 days.
3.What payment methods are accepted for LM2592HVSX-ADJ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2592HVSX-ADJ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2592HVSX-ADJ/NOPB?
LM2592HVSX-ADJ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2592HVSX-ADJ/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 LM2592HVSX-ADJ/NOPB?
For technical support, including LM2592HVSX-ADJ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2592HVSX-ADJ/NOPB requirements.
6.How does Aetrix verify that LM2592HVSX-ADJ/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2592HVSX-ADJ/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 LM2592HVSX-ADJ/NOPB meets industry standards.
7.What is the process for return or replacement of LM2592HVSX-ADJ/NOPB?
All LM2592HVSX-ADJ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2592HVSX-ADJ/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 LM2592HVSX-ADJ/NOPB part is unused and in its original packaging.
Return procedure for LM2592HVSX-ADJ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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