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Texas Instruments LM2592HVSX-3.3/NOPB
- Part No.:
- LM2592HVSX-3.3/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
LM2592HVSX-3.3/NOPB.pdf
- Description:
- IC REG BUCK 3.3V 2A TO263
- Quantity:
- Payment:
- Shipping:
Inventory:1,867
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Product details
Overview
LM2592HVSX-3.3/NOPB 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 input voltage support up to 60 V, fixed 150-kHz switching frequency, and ±4% output voltage tolerance over line and load. It operates in industrial temperature range (−40°C to +125°C) and integrates thermal shutdown and current-limit protection for robust power conversion in off-line or high-voltage bus applications.
For engineers reviewing the LM2592HVSX-3.3/NOPB datasheet, LM2592HVSX-3.3/NOPB pinout, LM2592HVSX-3.3/NOPB application, or LM2592HVSX-3.3/NOPB equivalent, key selection criteria include its 60-V max input rating, 2-A continuous output capability, ON/OFF control interface, low 90-μA standby current, and compatibility with standard 5-pin TO-220 and DDPAK packages for thermal management in space-constrained designs.
Technical Context
The LM2592HVSX-3.3/NOPB implements a fixed-frequency, current-mode buck topology with internal compensation and a single N-channel DMOS power switch. Its oscillator runs at 150 kHz (±15%), enabling use of compact external inductors and capacitors while maintaining stable regulation across 4.5–60 V input and 0.2–2 A load.
Control logic includes an ON/OFF pin with 1.3 V typical threshold, supporting active-high shutdown and <90 μA quiescent current in standby. Protection features are two-stage current limiting (2.4–3.7 A peak) and thermal shutdown at 150°C junction temperature, with no external sensing components required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±4% (3.168–3.432 V) over full input/load/temperature range |
| Max Input Voltage | 60 V - supports direct connection to 48-V industrial buses or unregulated AC/DC rails |
| Output Current | 2 A continuous - sufficient for powering microcontrollers, FPGAs, and analog subsystems |
| Switching Frequency | 150 kHz ±15% - enables use of ≤33 μH inductors and reduces EMI filtering complexity |
| Quiescent Current | 90 μA standby (ISTBY), 5–10 mA active (IQ) - suitable for battery-backed or low-power wake-up systems |
| Efficiency | 76% at VIN = 12 V, IOUT = 2 A - balances thermal performance and component count in mid-power designs |
| Thermal Shutdown | 150°C junction - self-protects under overload or poor heatsinking without external circuitry |
Pinout & Package
LM2592HVSX-3.3/NOPB is supplied in a 5-pin TO-220 (NDH) package with 14.986 mm × 10.16 mm body size and through-hole mounting. The package provides low thermal resistance (RθJA = 50°C/W on JEDEC 4-layer board) and integrated heat slug for direct heatsink attachment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: +VIN | Input supply rail | Accepts 4.5–60 V DC; requires local 470-μF low-ESR capacitor to handle 2-A switching 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 | Power and signal reference | Must be connected to low-impedance ground plane; shared return for input/output capacitors and feedback network |
| 4: Feedback | Regulation sense input | Internally tied to 3.3 V output; not user-adjustable - disables external resistor divider in fixed-version variants |
| 5: ON/OFF | Digital enable control | Active-low logic: ≤0.6 V enables regulation; ≥2 V forces 90-μA standby mode; max 25 V absolute rating |
Key Features
| Feature | Design Value |
|---|---|
| Wide input voltage range | 4.5 V to 60 V - eliminates need for preregulation when interfacing with 24-V/48-V industrial or automotive supplies |
| Integrated protection | Thermal shutdown + two-stage current limit - prevents damage during short-circuit or overheating without external fault monitoring |
| Low standby consumption | 90 μA ISTBY - extends battery life in always-on systems with periodic wake-up requirements |
| Fixed-frequency operation | 150-kHz oscillator - simplifies EMI filter design and avoids variable-frequency noise spreading |
| Simple external component count | Only 1 inductor, 2 capacitors, 1 Schottky diode required - reduces BOM cost and layout area vs. controller-based solutions |
Applications
| Industrial Power Supply | Automotive Subsystem |
|---|---|
Use Scenario: Converting 24-V vehicle battery or 48-V telecom bus to stable 3.3-V rail for CAN transceivers and microcontrollers. IC Role / Device Role / Timing Role: Primary step-down regulator providing isolated, regulated 3.3-V supply with transient immunity against load dump and cold-crank conditions. Use Value: Withstands 60-V max input and −40°C to +125°C operation, eliminating need for external TVS or pre-regulator stages in harsh environments. | Use Scenario: Generating 3.3 V for infotainment SoCs and ADAS sensors from unregulated 12-V battery with minimal footprint. IC Role / Device Role / Timing Role: High-efficiency buck converter operating at fixed 150-kHz frequency to simplify EMC compliance in dense PCB layouts. Use Value: Delivers 2 A continuously with 76% efficiency at 12-V input, reducing thermal load and enabling TO-220 mounting without forced air cooling. |
| Programmable Logic Power | Industrial IoT Node |
Use Scenario: Powering FPGA I/O banks or CPLD cores requiring precise 3.3-V supply with fast load transient response. IC Role / Device Role / Timing Role: Main DC-DC regulator supplying configurable logic devices; leverages internal compensation for stable loop behavior with standard output caps. Use Value: ±4% output tolerance ensures reliable logic-level margin across temperature and line variations, avoiding timing violations in high-speed digital interfaces. | Use Scenario: Providing regulated 3.3-V power to wireless modules (LoRa, NB-IoT), sensors, and MCU in battery- or energy-harvesting powered edge nodes. IC Role / Device Role / Timing Role: Primary power converter with ON/OFF pin enabling deep-sleep control synchronized to sensor sampling intervals. Use Value: 90-μA standby current minimizes quiescent drain during multi-second sleep cycles, extending operational lifetime in remote deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2592HVSX-5.0/NOPB | Fixed 5-V output; identical pinout, package, and electrical specs except VOUT and feedback configuration | Used where 5-V logic or USB-peripheral power is required instead of 3.3-V | Select only if system requires 5-V output - not a drop-in replacement for 3.3-V designs due to different regulation setpoint |
| LM2596SX-3.3/NOPB | Same 3.3-V output but 150-kHz frequency, 3-A rating, and higher 40-V max input; uses same TO-220-5 package | Better suited for higher-current loads (>2 A) or lower-input-voltage systems (<40 V) | Prefer for new designs needing headroom in current or thermal margin; not pin-compatible due to different feedback pin behavior and internal architecture |
Compared with LM2592HVSX-3.3/NOPB, the LM2592HVSX-5.0/NOPB shares identical form-factor and protection features but targets 5-V systems, while the LM2596SX-3.3/NOPB offers higher current capability and lower input voltage limit - both require schematic and layout review before substitution.
Availability
LM2592HVSX-3.3/NOPB is available at Aetrix Electronics and suitable for industrial power supplies, automotive subsystems, and programmable logic applications requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized channels.
Supply support for LM2592HVSX-3.3/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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management ICs with broad industrial, automotive, and communications market reach.
The LM2592HV series belongs to TI's SIMPLE SWITCHER® power converter family, designed specifically for ease-of-use in non-isolated DC-DC buck applications where minimal external components, wide input range, and rugged operation are critical.
FAQ
What is the maximum input voltage rating for LM2592HVSX-3.3/NOPB?
The LM2592HVSX-3.3/NOPB has a maximum input voltage rating of 60 V, with recommended operating range from 4.5 V to 60 V. Absolute maximum stress rating is 63 V per the datasheet's Absolute Maximum Ratings table. Exceeding 60 V during normal operation risks violating recommended conditions and may impact reliability or regulation accuracy. This rating enables direct use with 48-V industrial buses and unregulated offline supplies.
Does LM2592HVSX-3.3/NOPB require external compensation components?
No, LM2592HVSX-3.3/NOPB does not require external compensation components. It integrates internal frequency compensation optimized for standard buck configurations using a 33-μH inductor and 220-μF output capacitor, as validated in TI's test circuits. The fixed-output version ties the Feedback pin internally to the 3.3-V output, eliminating the need for external resistor dividers or feedforward networks - simplifying design and improving stability across temperature and load.
What package type is used for LM2592HVSX-3.3/NOPB?
LM2592HVSX-3.3/NOPB is packaged in a 5-pin TO-220 (NDH) variant with a 14.986 mm × 10.16 mm body size and through-hole mounting. This package features an exposed metal tab for thermal conduction to a heatsink and achieves 50°C/W junction-to-ambient thermal resistance on a JEDEC-standard 4-layer board. It is pin-compatible with the 5-pin DDPAK/TO-263 (KTT) variant but differs in mounting method and thermal path.
Can LM2592HVSX-3.3/NOPB be used in negative-output (inverting) configurations?
Yes, LM2592HVSX-3.3/NOPB can be configured as a positive-to-negative inverting regulator by bootstrapping the ground pin to the negative output, as documented in TI's Application Note AN-1157 and Section 10.1.5 of the datasheet. However, this requires additional external diodes and careful attention to voltage stress - the sum of |VIN| + |VOUT| must remain ≤60 V. The fixed 3.3-V version is less common in inverting use than the adjustable variant, but functional validation is supported.
What is the typical efficiency of LM2592HVSX-3.3/NOPB at full load?
The typical efficiency of LM2592HVSX-3.3/NOPB is 76% at VIN = 12 V and IOUT = 2 A, as specified in Section 7.5 of the datasheet. Efficiency varies with input voltage and load - it improves at higher VIN (e.g., >24 V) due to reduced duty cycle and worsens below 6 V due to increased conduction losses. Peak efficiency exceeds 80% near 24–36 V input under 1-A load, consistent with its 150-kHz fixed-frequency, nonsynchronous buck architecture.
LM2592HVSX-3.3/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:
- 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)
LM2592HVSX-3.3/NOPB FAQ
1.How can I place an order for LM2592HVSX-3.3/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2592HVSX-3.3/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-3.3/NOPB reliable?
The price and inventory of LM2592HVSX-3.3/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-3.3/NOPB is usually 5 days.
3.What payment methods are accepted for LM2592HVSX-3.3/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2592HVSX-3.3/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2592HVSX-3.3/NOPB?
LM2592HVSX-3.3/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2592HVSX-3.3/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-3.3/NOPB?
For technical support, including LM2592HVSX-3.3/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2592HVSX-3.3/NOPB requirements.
6.How does Aetrix verify that LM2592HVSX-3.3/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2592HVSX-3.3/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-3.3/NOPB meets industry standards.
7.What is the process for return or replacement of LM2592HVSX-3.3/NOPB?
All LM2592HVSX-3.3/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2592HVSX-3.3/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-3.3/NOPB part is unused and in its original packaging.
Return procedure for LM2592HVSX-3.3/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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