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Texas Instruments LM2592HVS-ADJ/NOPB
- Part No.:
- LM2592HVS-ADJ/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
LM2592HVS-ADJ/NOPB.pdf
- Description:
- IC REG BUCK ADJ 2A TO263
- Quantity:
- Payment:
- Shipping:
Inventory:1,963
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Product details
Overview
LM2592HVS-ADJ/NOPB from Texas Instruments is a monolithic nonsynchronous step-down DC-DC converter IC designed for high-input-voltage industrial and automotive power supplies. It delivers up to 2 A load current with adjustable output voltage (1.2 V to 57 V), operates from 4.5 V to 60 V input, features 150-kHz fixed-frequency switching, and includes ON/OFF control with 90 μA standby current. It is used in on-card buck regulators requiring wide VIN range and robust thermal protection.
For engineers reviewing the LM2592HVS-ADJ/NOPB datasheet, LM2592HVS-ADJ/NOPB pinout, LM2592HVS-ADJ/NOPB application, or LM2592HVS-ADJ/NOPB equivalent, key selection criteria include input voltage headroom (≤60 V), feedback reference tolerance (±4% over line/load/temp), switch saturation voltage (1.3 V typ at 2 A), thermal shutdown behavior, and compatibility with external Schottky catch diodes and low-ESR output capacitors.
Technical Context
The LM2592HVS-ADJ/NOPB implements a current-mode controlled buck topology with internal 150-kHz oscillator, integrated 2-A N-channel DMOS switch, and precision 1.23-V feedback reference. Its two-stage current limit and thermal shutdown provide fault protection without external circuitry.
It operates in continuous or discontinuous conduction mode depending on load and inductor value, supports delayed start-up via ON/OFF pin RC network, and accepts feedforward compensation (CFF) for improved loop stability at high output voltages (>10 V) or low-ESR capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 60 V - supports direct connection to 48-V industrial rails or automotive battery systems with transient margin. |
| Output Voltage Range | 1.2 V to 57 V (adjustable) - set by external resistor divider; ±4% tolerance ensures stable regulation across full line/load/temperature range. |
| Max Output Current | 2 A DC - sustained load capability with thermal derating above 125°C junction temperature. |
| Switching Frequency | 150 kHz (±15%) - enables use of compact 33–47 μH inductors and reduces EMI compared to lower-frequency alternatives. |
| Feedback Reference Voltage | 1.23 V (±3.3%) - precise internal bandgap reference enabling accurate output programming with standard 1% resistors. |
| Standby Quiescent Current | 90 μA typical - enables ultra-low-power shutdown for battery-backed or energy-sensitive systems. |
| Switch Saturation Voltage | 1.3 V typical at 2 A - directly impacts conduction loss and efficiency at high load; limits minimum practical duty cycle. |
Pinout & Package
LM2592HVS-ADJ/NOPB is packaged in a 5-pin TO-220 (NDH) package with exposed tab for thermal dissipation (RθJA = 50°C/W on JEDEC 4-layer board). The pinout is optimized for minimal PCB layout complexity and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: +VIN | Power Input | Accepts 4.5–60 V DC; requires local 470-μF low-ESR aluminum electrolytic 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; must be routed short and wide to minimize ringing. |
| 3: Ground | Power & Signal Reference | Common return for input/output capacitors, feedback network, and ON/OFF pull-down; connects to exposed tab for thermal path. |
| 4: Feedback | Regulation Sense | Monitors output via resistor divider; 1.23-V reference sets VOUT = 1.23 × (1 + R1/R2); sensitive to noise-requires guard ring and short trace. |
| 5: ON/OFF | Enable Control | Logic-level shutdown: ≥2 V disables regulator (90 μA IQ); ≤0.6 V or floating enables operation; max 25 V absolute rating. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Input Range (4.5–60 V) | Eliminates need for preregulator stages in 24/48-V industrial systems and accommodates automotive cold-crank transients. |
| Integrated 2-A Power Switch | Reduces BOM count and layout area; avoids gate-drive design complexity while maintaining >75% efficiency at 12-V IN / 3-V OUT / 2-A. |
| Fixed 150-kHz Oscillator | Enables predictable EMI filtering and consistent inductor sizing; eliminates external timing components required in variable-frequency controllers. |
| Thermal Shutdown + Current Limit | Self-protecting under overload or ambient overheating-no external sensing or latch circuitry needed for basic reliability. |
| ON/OFF Pin with Low-IQ Standby | Supports system-level power sequencing and sleep modes; 90 μA shutdown current extends battery life in portable or remote applications. |
Applications
| Industrial 24-V Power Distribution | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Converting 24-V rail to 5-V or 3.3-V for microcontrollers, CAN transceivers, and sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Primary step-down regulator providing isolated, regulated DC power with high input transient tolerance. Use Value: Operates reliably across −40°C to +125°C ambient; withstands 60-V surges per ISO 7637-2; eliminates need for external UVLO circuitry. |
Use Scenario: Generating stable 5-V supply for infotainment head units and lighting controllers in 12-V vehicle architectures. IC Role / Device Role / Timing Role: Buck converter handling cold-crank (4.5 V) and load-dump (60 V) conditions while delivering 2-A peak current. Use Value: Internal current limiting prevents fuse blowout during motor stall events; thermal shutdown protects against enclosure overheating. |
| Programmable Test Equipment Power | Positive-to-Negative Converter |
|
Use Scenario: Adjustable output stage in bench power supplies or automated test fixtures requiring 1.2–57-V programmable DC outputs. IC Role / Device Role / Timing Role: Core voltage-setting element with external resistor divider and optional feedforward capacitor for stability. Use Value: ±4% output tolerance ensures calibration-grade accuracy; 150-kHz switching enables fast transient response (<50 μs) to load steps. |
Use Scenario: Generating −5-V or −12-V from +12-V or +24-V input in analog signal conditioning circuits or op-amp bias rails. IC Role / Device Role / Timing Role: Inverting buck-boost configuration using ground-referenced feedback and bootstrapped GND pin. Use Value: Supports bidirectional voltage conversion without dedicated inverting ICs; maximum input+|output| ≤60 V ensures safe operation. |
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 | Higher 3-A output current, 150-kHz frequency, but larger TO-220-5 package footprint and higher quiescent current (5 mA active vs. 10 mA). | Better suited for higher-current loads; less suitable where board space or standby power is constrained. | Choose LM2596HV-ADJ when >2 A output is required and thermal management allows higher power dissipation. |
| LM2678-ADJ | 2.5-A output, 260-kHz switching, integrated soft-start, but narrower 8–40 V input range and no ON/OFF pin. | Lacks enable control and wide-VIN capability; optimized for mid-range industrial supplies rather than automotive transients. | Prefer LM2678-ADJ only when 260-kHz operation is mandatory for EMI compliance and input stays within 40 V. |
Compared with LM2592HVS-ADJ/NOPB, LM2596HV-ADJ offers higher current but larger thermal footprint, while LM2678-ADJ trades wide input range and enable functionality for faster switching and soft-start-neither is pin-compatible, and all require distinct PCB layouts and external component recalculations.
Availability
LM2592HVS-ADJ/NOPB is available at Aetrix Electronics and suitable for industrial power distribution, automotive body electronics, and programmable test equipment requiring stable component supply with long-term lifecycle support.
Supply support for LM2592HVS-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 leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability DC-DC conversion.
The LM2592HV family was engineered for rugged, wide-input-voltage step-down regulation in harsh environments-targeting industrial controls, transportation systems, and distributed power architectures where simplicity, thermal resilience, and transient tolerance are critical.
FAQ
What is the maximum input voltage rating for LM2592HVS-ADJ/NOPB?
The LM2592HVS-ADJ/NOPB has an absolute maximum input voltage rating of 63 V, with recommended operating range up to 60 V. This allows direct use with 48-V industrial buses and automotive systems experiencing load-dump transients. Operation beyond 60 V risks permanent damage even if brief, and the device will shut down thermally before reaching destructive levels under overload.
How is the output voltage set on LM2592HVS-ADJ/NOPB?
The LM2592HVS-ADJ/NOPB uses a resistor divider from output to ground, with the midpoint connected to the Feedback pin. The internal 1.23-V reference forces VOUT = 1.23 × (1 + R1/R2), where R1 connects to VOUT and R2 to GND. For best accuracy, use 1% metal-film resistors and keep the FB trace short and guarded to avoid noise coupling that could destabilize regulation.
Does LM2592HVS-ADJ/NOPB require an external catch diode?
Yes, LM2592HVS-ADJ/NOPB requires an external Schottky catch diode (e.g., 3.3-A, 60-V rated) connected from the Output pin to ground. The internal switch does not include synchronous rectification, so the diode provides the inductor's freewheeling path during switch-off. TI recommends placing it close to the IC with short traces to minimize reverse recovery losses and EMI.
What thermal performance can be expected from LM2592HVS-ADJ/NOPB in a TO-220 package?
In the NDH (TO-220-5) package, LM2592HVS-ADJ/NOPB has a junction-to-ambient thermal resistance (RθJA) of 50°C/W on a standard JEDEC 4-layer board. At 2-A load and 12-V input, typical power dissipation is ~2.6 W, resulting in ~130°C junction rise above ambient-well within the 150°C max rating. Use of a heatsink or copper pour on the tab significantly improves thermal margin.
Can LM2592HVS-ADJ/NOPB be used in a negative-output configuration?
Yes, LM2592HVS-ADJ/NOPB supports positive-to-negative conversion by bootstrapping the Ground pin to the negative output and referencing the Feedback pin to ground. The maximum sum of |VOUT| + VIN must not exceed 60 V. TI provides verified schematics (e.g., Figure 24 in SNVS075E) and cautions about added diodes for stability and ripple isolation in this topology.
LM2592HVS-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:
- Tube
- 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)
LM2592HVS-ADJ/NOPB FAQ
1.How can I place an order for LM2592HVS-ADJ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2592HVS-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 LM2592HVS-ADJ/NOPB reliable?
The price and inventory of LM2592HVS-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 LM2592HVS-ADJ/NOPB is usually 5 days.
3.What payment methods are accepted for LM2592HVS-ADJ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2592HVS-ADJ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2592HVS-ADJ/NOPB?
LM2592HVS-ADJ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2592HVS-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 LM2592HVS-ADJ/NOPB?
For technical support, including LM2592HVS-ADJ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2592HVS-ADJ/NOPB requirements.
6.How does Aetrix verify that LM2592HVS-ADJ/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2592HVS-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 LM2592HVS-ADJ/NOPB meets industry standards.
7.What is the process for return or replacement of LM2592HVS-ADJ/NOPB?
All LM2592HVS-ADJ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2592HVS-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 LM2592HVS-ADJ/NOPB part is unused and in its original packaging.
Return procedure for LM2592HVS-ADJ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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