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Texas Instruments LM2592HVT-ADJ/NOPB
- Part No.:
- LM2592HVT-ADJ/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- TO-220-5 Formed Leads
- Datasheet:
-
LM2592HVT-ADJ/NOPB.pdf
- Description:
- IC REG BUCK ADJ 2A TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,723
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Product details
Overview
LM2592HVT-ADJ/NOPB from Texas Instruments is a 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 from 1.2 V to 57 V (±4% tolerance), operates from 4.5 V to 60 V input, and integrates a 150-kHz fixed-frequency oscillator and thermal/current protection - used in on-board 24-V/48-V buck regulators.
For engineers reviewing the LM2592HVT-ADJ/NOPB datasheet, LM2592HVT-ADJ/NOPB pinout, LM2592HVT-ADJ/NOPB application, or LM2592HVT-ADJ/NOPB equivalent, key selection criteria include its wide VIN range, ON/OFF control interface, feedback voltage accuracy (1.23 V ±3%), standby current (90 μA), and TO-220–compatible 5-pin package with integrated switch and protection.
Technical Context
The LM2592HVT-ADJ/NOPB implements a monolithic buck topology with an internal N-channel DMOS switch, fixed 150-kHz oscillator, and voltage-mode PWM control loop referenced to a precision 1.23-V feedback threshold. Its two-stage current limit (2.4 A typical peak) and thermal shutdown ensure fault robustness without external sensing components.
It supports external ON/OFF logic control (VIH = 1.3 V, VIL = 0.6 V), operates in continuous or discontinuous conduction mode depending on load and inductor value, and requires only five external components - input capacitor, output capacitor, catch diode, inductor, and feedback resistor divider - for full regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 60 V - supports direct connection to 24-V, 36-V, and 48-V industrial bus rails without pre-regulation. |
| Output Current | 2 A DC - sufficient for powering FPGA I/O banks, microcontroller cores, or analog subsystems from a single stage. |
| Feedback Voltage | 1.23 V ±3% - sets output via resistive divider; enables precise 1.2–57 V adjustment with <±4% total output error over line/load/temp. |
| Switching Frequency | 150 kHz (±15%) - allows use of low-cost, high-saturation-current inductors and reduces EMI filtering burden vs. lower-frequency alternatives. |
| Standby Current | 90 μA typical - enables low-power sleep modes in battery-backed or energy-conscious systems without auxiliary LDOs. |
| Current Limit | 2.4 A minimum peak - provides hard short-circuit protection while allowing margin above 2-A rated load for transient surges. |
| Thermal Shutdown | 150 °C junction - self-protects during overload or poor heatsinking; automatic recovery after cooldown. |
Pinout & Package
LM2592HVT-ADJ/NOPB is supplied in a 5-pin TO-220 (NDH) package with through-hole mounting and integral heat sink tab. The package measures 14.986 mm × 10.16 mm and features exposed metal for thermal conduction to PCB copper or external heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: +VIN | Power Input | Accepts 4.5–60 V DC; requires local low-ESR bypass capacitor to supply pulsed switch current and suppress transients. |
| 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 Return | Common return for internal circuitry, feedback network, and external components; must be low-impedance path to minimize noise. |
| 4: Feedback | Error Amplifier Input | Senses regulated output via resistor divider; 1.23-V reference sets VOUT = 1.23 × (1 + R1/R2); bias current ≤50 nA minimizes divider error. |
| 5: ON/OFF | Control Logic Input | Active-low enable: ≤0.6 V = ON, ≥2 V = OFF; 90-μA standby draw when high; max 25-V absolute rating protects against overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Input Range (4.5–60 V) | Eliminates need for upstream pre-regulators in 24-V/48-V systems, reducing BOM count and board space. |
| Adjustable Output (1.2–57 V) | Supports diverse rail requirements (e.g., 3.3 V for logic, 12 V for actuators, 24 V for sensors) with one footprint. |
| Integrated Switch & Protection | Reduces external component count to just 5 parts; built-in thermal shutdown and current limiting simplify safety certification. |
| ON/OFF Control Interface | Enables system-level power sequencing and low-power sleep states without external MOSFET drivers or logic gates. |
| Fixed 150-kHz Oscillator | Ensures predictable EMI profile and simplifies filter design; avoids frequency jitter issues seen in variable-frequency controllers. |
Applications
| Industrial PLC Power Supply | Automotive Body Control Module |
|---|---|
|
Use Scenario: Converts 24-V vehicle battery or 48-V industrial bus to stable 5-V or 3.3-V for MCU and CAN transceivers. IC Role / Device Role / Timing Role: Primary step-down regulator providing isolated, regulated DC power with fast transient response to load steps. Use Value: Delivers 2-A output at >75% efficiency across 12–60 V input, enabling compact heatsink-free designs in constrained enclosures. |
Use Scenario: Powers infotainment SoC I/O rails and sensor interfaces in vehicles where input voltage varies from 9 V (cranking) to 16 V (running). IC Role / Device Role / Timing Role: Buck converter with UVLO-compatible ON/OFF control, ensuring clean power-up sequencing and brownout immunity. Use Value: Maintains regulation down to 4.5 V input and withstands 60-V load dump spikes - critical for automotive-grade reliability. |
| Telecom Remote Radio Unit | Test Equipment Auxiliary Supply |
|
Use Scenario: Generates programmable bias voltages (e.g., 12 V, 24 V) for RF power amplifiers in 5G small cells powered from −48-V DC plant. IC Role / Device Role / Timing Role: Adjustable buck regulator configured as positive-output stage fed from rectified −48-V source. Use Value: Achieves 1.2–57 V output with ±4% accuracy using only two resistors - eliminates need for multiple fixed-output regulators. |
Use Scenario: Provides user-configurable auxiliary rails (e.g., ±15 V, +5 V) in benchtop power analyzers and signal generators. IC Role / Device Role / Timing Role: Compact, thermally robust DC-DC stage delivering stable, low-noise power independent of main AC-DC supply. Use Value: TO-220 package enables direct heatsink mounting; 150-kHz switching minimizes conducted EMI into sensitive analog measurement circuits. |
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 and higher quiescent current (5 mA vs. 90 μA). | Better suited for higher-load applications (>2 A); less optimal for ultra-low-power standby modes. | Select when load exceeds 2 A or when higher current margin is required; verify thermal layout for increased dissipation. |
| TPS54202DRT | 2-A synchronous buck with 4.5–28-V input, 500-kHz switching, and integrated high-/low-side FETs; no external diode needed. | Offers higher efficiency at light loads and smaller solution size, but limited to ≤28 V input - unsuitable for 48-V+ systems. | Prefer for space-constrained, low-input-voltage designs where efficiency >85% at 100-mA load is critical. |
Compared with LM2592HVT-ADJ/NOPB, LM2596HV-ADJ trades lower standby current for higher output capability, while TPS54202DRT improves light-load efficiency and integration at the cost of input voltage headroom - making LM2592HVT-ADJ/NOPB uniquely balanced for 48-V industrial buck conversion with low-quiescent operation.
Availability
LM2592HVT-ADJ/NOPB is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, telecom infrastructure, and test equipment requiring stable component supply and long-term manufacturability.
Supply support for LM2592HVT-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 ICs, with decades of expertise in high-reliability power conversion solutions.
The LM2592HV series was engineered for rugged, high-input-voltage DC-DC conversion in harsh environments - targeting industrial controls, transportation systems, and distributed power architectures where simplicity, thermal resilience, and wide VIN range are essential.
FAQ
What is the maximum input voltage rating for LM2592HVT-ADJ/NOPB?
The LM2592HVT-ADJ/NOPB has an absolute maximum input voltage rating of 63 V, with recommended operating range from 4.5 V to 60 V. Operation at 60 V is fully specified across temperature and load conditions, making it suitable for 48-V nominal systems experiencing load dump or surge events. Exceeding 63 V risks permanent damage per Absolute Maximum Ratings.
How does the feedback pin (Pin 4) function in LM2592HVT-ADJ/NOPB?
In LM2592HVT-ADJ/NOPB, Pin 4 (Feedback) connects to a precision 1.23-V internal reference. Output voltage is set by a resistor divider (R1–R2) between VOUT and GND, where VOUT = 1.23 × (1 + R1/R2). The pin draws only 10–50 nA bias current, minimizing divider error. For outputs >10 V or low-ESR capacitors, a feedforward capacitor across R2 improves loop stability.
Can LM2592HVT-ADJ/NOPB be used in a negative-output (inverting) configuration?
Yes - LM2592HVT-ADJ/NOPB supports inverting buck-boost topologies. By bootstrapping the GND pin to the negative output and referencing the Feedback pin to that node, it regulates negative voltages (e.g., −5 V, −12 V). The maximum |VIN| + |VOUT| must not exceed 60 V, and a Schottky catch diode plus isolation diode are required per TI Application Note AN-1157.
What thermal considerations apply to LM2592HVT-ADJ/NOPB in TO-220 package?
The LM2592HVT-ADJ/NOPB in NDH (TO-220-5) package has a junction-to-ambient thermal resistance (RθJA) of 50 °C/W on a standard 4-layer JEDEC board. To maintain TJ ≤125 °C at 2-A load and 60-V input, a minimum 2.5 cm² copper pour under the tab is recommended. Thermal shutdown activates at 150 °C and recovers automatically after cooldown.
Is LM2592HVT-ADJ/NOPB RoHS-compliant and lead-free?
Yes - LM2592HVT-ADJ/NOPB carries the "/NOPB" suffix, indicating lead-free (Pb-free) and RoHS-compliant construction per Texas Instruments' packaging standards. It meets J-STD-020 moisture sensitivity level (MSL) 3 and is qualified for reflow soldering per IPC/JEDEC J-STD-020.
LM2592HVT-ADJ/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- TO-220-5 Formed Leads
- 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:
- Through Hole
- Supplier Device Package:
- TO-220-5
LM2592HVT-ADJ/NOPB FAQ
1.How can I place an order for LM2592HVT-ADJ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2592HVT-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 LM2592HVT-ADJ/NOPB reliable?
The price and inventory of LM2592HVT-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 LM2592HVT-ADJ/NOPB is usually 5 days.
3.What payment methods are accepted for LM2592HVT-ADJ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2592HVT-ADJ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2592HVT-ADJ/NOPB?
LM2592HVT-ADJ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2592HVT-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 LM2592HVT-ADJ/NOPB?
For technical support, including LM2592HVT-ADJ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2592HVT-ADJ/NOPB requirements.
6.How does Aetrix verify that LM2592HVT-ADJ/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2592HVT-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 LM2592HVT-ADJ/NOPB meets industry standards.
7.What is the process for return or replacement of LM2592HVT-ADJ/NOPB?
All LM2592HVT-ADJ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2592HVT-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 LM2592HVT-ADJ/NOPB part is unused and in its original packaging.
Return procedure for LM2592HVT-ADJ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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