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Texas Instruments LM2592HVS-3.3
- Part No.:
- LM2592HVS-3.3
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
LM2592HVS-3.3.pdf
- Description:
- IC REG BUCK 3.3V 2A TO263
- Quantity:
- Payment:
- Shipping:
Inventory:1,399
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Product details
Overview
LM2592HVS-3.3 from Texas Instruments is a monolithic nonsynchronous step-down (buck) DC-DC switching regulator delivering 3.3 V at up to 2 A load current, with ±4% output voltage tolerance over line and load, 150-kHz fixed-frequency operation, and input voltage support up to 60 V. It integrates internal frequency compensation and thermal/current protection, and is used in industrial power supplies, automotive subsystems, and embedded systems requiring robust 3.3-V rail generation from wide-input sources.
For engineers reviewing the LM2592HVS-3.3 datasheet, LM2592HVS-3.3 pinout, LM2592HVS-3.3 application, or LM2592HVS-3.3 equivalent, key selection criteria include its 60-V max input rating, 2-A continuous output capability, ON/OFF control interface, 90-μA standby quiescent current, and compatibility with standard TO-220 and DDPAK-5 packages for thermal management in high-voltage buck designs.
Technical Context
The LM2592HVS-3.3 implements a fixed-frequency (150 kHz) current-mode buck topology with an integrated N-channel power switch and internal oscillator. Its feedback loop senses output voltage directly at the FB pin (shorted internally to output for fixed versions), enabling stable regulation without external resistor dividers.
It supports active mode (ON/OFF pin ≤0.6 V) and shutdown mode (ON/OFF pin ≥2 V), drawing only 90 μA typical standby current. Protection includes two-stage current limiting (2.4–3.7 A peak), thermal shutdown, and absolute maximum ratings covering 63-V input and 25-V ON/OFF pin voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±4% (3.168–3.432 V) across 4.75–60 V input and 0.2–2 A load |
| Max Input Voltage | 60 V - enables direct regulation from 48-V industrial or 36-V automotive battery rails |
| Switching Frequency | 150 kHz (±15%) - allows use of compact 22–47 μH inductors and standard electrolytic output capacitors |
| Output Current | 2 A DC continuous - supports logic rails, microcontrollers, and peripheral ICs without external current boosting |
| Quiescent Current | 90 μA in shutdown - minimizes battery drain in always-on systems with enable control |
| Efficiency | 76% at 12 VIN/3.3 VOUT/2 A - reduces thermal load vs. linear regulators in high-dropout scenarios |
| Saturation Voltage | 1.3 V typical at 2 A - defines minimum dropout (VIN − VOUT) ≈ 1.3 V + diode drop in practical layout |
Pinout & Package
LM2592HVS-3.3 is available in 5-pin TO-220 (NDH) and 5-pin DDPAK/TO-263 (KTT) packages. Both feature identical pinout and thermal performance (RθJA = 50°C/W on JEDEC 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +VIN | Input supply | Accepts 4.75–60 V DC; requires low-ESR input capacitor placed adjacent to minimize switching transients |
| Output | Switch node | Drives external catch diode and inductor; swings between ~(+VIN − 1.3 V) and ~−0.5 V during operation |
| Ground | Power and signal reference | Common return for input cap, output cap, and feedback path; must be low-impedance plane for stability |
| Feedback | Regulation sense | Internally tied to output for fixed 3.3-V version; not user-accessible - no external divider needed |
| ON/OFF | Enable control | Logic-level shutdown: ≥2 V disables regulator (90 μA IQ); ≤0.6 V or floating enables operation |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2-A power switch | Eliminates need for external MOSFET and gate driver, reducing BOM count and PCB area in buck converters |
| 150-kHz fixed oscillator | Enables predictable EMI profile and simplifies filter design using off-the-shelf 22–47 μH shielded inductors |
| Thermal shutdown + current limit | Self-protects against overload, short-circuit, or inadequate heatsinking without external circuitry |
| ON/OFF pin with 90-μA standby | Supports system-level power sequencing and low-power sleep modes in battery-powered applications |
| ±4% output tolerance | Meets tight regulation requirements for 3.3-V digital logic, FPGAs, and communication interfaces without post-regulation |
Applications
| Industrial Power Supply | Automotive Body Control Module |
|---|---|
Use Scenario: Generating 3.3-V logic rail from 24-V truck battery with load dumps up to 60 V. IC Role / Device Role / Timing Role: Primary buck regulator providing isolated, protected 3.3-V supply for MCU and CAN transceivers. Use Value: Withstands 60-V transients and delivers 2 A continuously, eliminating need for pre-regulator stages or oversized linear regulators. | Use Scenario: Powering infotainment microcontroller and sensors in passenger compartment under cold-crank (4.5 V) and load-dump (60 V) conditions. IC Role / Device Role / Timing Role: Main 3.3-V DC-DC converter with ON/OFF control synchronized to vehicle ignition state. Use Value: 90-μA shutdown current extends battery life during vehicle off-state; ±4% tolerance ensures reliable digital operation across temperature. |
| Programmable Logic Controller (PLC) | Point-of-Load Converter for FPGA |
Use Scenario: Converting 48-V backplane voltage to 3.3-V I/O rail in DIN-rail mounted PLC with convection cooling. IC Role / Device Role / Timing Role: High-input-voltage buck regulator operating at 150 kHz to minimize filter size in space-constrained enclosures. Use Value: TO-220 package provides adequate thermal dissipation without forced air; fixed 3.3-V output eliminates calibration overhead. | Use Scenario: Providing clean, regulated 3.3-V supply to FPGA configuration and I/O banks in telecom base station card. IC Role / Device Role / Timing Role: Point-of-load regulator with fast transient response and integrated protection for sensitive digital loads. Use Value: 2-A capability supports FPGA core + I/O simultaneously; thermal shutdown prevents damage during FPGA configuration surge currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2596S-3.3 | Same 3.3-V fixed output, but 150-kHz frequency, 3-A rating, and wider input range (4–40 V); uses different pinout and lacks ON/OFF control. | Not suitable where >40-V input or enable functionality is required; better for lower-input, higher-current designs. | Select LM2596S-3.3 only if input stays below 40 V and 3-A output is needed; LM2592HVS-3.3 remains preferred for 60-V input or ON/OFF sequencing. |
| TPS54202DRT | 2-A synchronous buck with 4.5–28-V input, 500-kHz switching, integrated high-side/low-side MOSFETs, and adjustable output; no fixed 3.3-V variant. | Requires external resistor divider and offers higher efficiency at lower input voltages, but cannot replace LM2592HVS-3.3 in 60-V applications. | Choose TPS54202DRT for compact, high-efficiency 12-V or 24-V point-of-load designs; LM2592HVS-3.3 is irreplaceable for 36–60-V input systems. |
Compared with LM2596S-3.3 and TPS54202DRT, the LM2592HVS-3.3 uniquely combines 60-V input tolerance, fixed 3.3-V output, ON/OFF control, and TO-220/DDPAK packaging-making it the sole option for ruggedized industrial and automotive buck conversion where input voltage exceeds 40 V and simplicity is prioritized over synchronous efficiency.
Availability
LM2592HVS-3.3 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and programmable logic controllers requiring stable component supply with long-term lifecycle assurance.
Supply support for LM2592HVS-3.3 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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management technologies with broad industrial, automotive, and communications reach.
The LM2592HV series was designed specifically for high-input-voltage, medium-current buck conversion in harsh environments-emphasizing ruggedness, minimal external components, and ease of implementation over ultra-high efficiency or digital control.
FAQ
What is the maximum input voltage rating for the LM2592HVS-3.3?
The LM2592HVS-3.3 has an absolute maximum input voltage rating of 63 V, with recommended operation up to 60 V. This allows direct connection to 48-V industrial buses and automotive systems experiencing load dump transients. Exceeding 60 V risks violating recommended operating conditions and may trigger thermal shutdown or reduce long-term reliability, even if within absolute maximum limits.
Does the LM2592HVS-3.3 require external feedback resistors to set the 3.3-V output?
No, the LM2592HVS-3.3 is a fixed-output variant: its feedback pin is internally connected to the output, so no external resistor divider is needed. This simplifies design, improves accuracy (±4% over line/load/temp), and eliminates drift from resistor tolerances or thermal coefficients-unlike the adjustable LM2592HV-ADJ version which requires two precision resistors.
How does the ON/OFF pin function on the LM2592HVS-3.3?
The ON/OFF pin on the LM2592HVS-3.3 provides logic-level enable control: driving it to ≥2 V places the LM2592HVS-3.3 in shutdown mode (IQ ≈ 90 μA), while leaving it floating or pulling it to ≤0.6 V enables normal operation. The threshold is typically 1.3 V, and the pin must never exceed 25 V. This allows integration into power-sequencing circuits without additional level-shifting.
What package options are available for the LM2592HVS-3.3?
The LM2592HVS-3.3 is offered in two thermally robust 5-pin packages: TO-220 (NDH) and DDPAK/TO-263 (KTT). Both share identical pinout and electrical characteristics. The TO-220 version suits through-hole prototyping and medium-volume assembly, while the surface-mount DDPAK enables automated reflow and improved thermal performance on copper-filled PCBs.
Can the LM2592HVS-3.3 be used in a negative-output (inverting) configuration?
Yes-the LM2592HVS-3.3 can be configured as a positive-to-negative inverter by bootstrapping its ground pin to the negative output, as documented in TI's Application Note AN-1157. In this topology, the regulator senses the inverted output via the feedback pin. However, the total voltage across the IC (|VIN| + |VOUT|) must remain ≤60 V, and external diodes and careful layout are required for stability and noise isolation.
LM2592HVS-3.3 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:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- 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-3.3 FAQ
1.How can I place an order for LM2592HVS-3.3 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2592HVS-3.3 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-3.3 reliable?
The price and inventory of LM2592HVS-3.3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2592HVS-3.3 is usually 5 days.
3.What payment methods are accepted for LM2592HVS-3.3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2592HVS-3.3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2592HVS-3.3?
LM2592HVS-3.3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2592HVS-3.3 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-3.3?
For technical support, including LM2592HVS-3.3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2592HVS-3.3 requirements.
6.How does Aetrix verify that LM2592HVS-3.3 is sourced from the original manufacturer or authorized distributors?
All LM2592HVS-3.3 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-3.3 meets industry standards.
7.What is the process for return or replacement of LM2592HVS-3.3?
All LM2592HVS-3.3 units undergo pre-shipment inspection (PSI). If there is an issue with LM2592HVS-3.3, 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-3.3 part is unused and in its original packaging.
Return procedure for LM2592HVS-3.3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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