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Texas Instruments LM2592HVT-3.3/NOPB
- Part No.:
- LM2592HVT-3.3/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- TO-220-5 Formed Leads
- Datasheet:
-
LM2592HVT-3.3/NOPB.pdf
- Description:
- IC REG BUCK 3.3V 2A TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:268
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Product details
Overview
LM2592HVT-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 peak-current limiting for robust power conversion in embedded power supplies.
For engineers reviewing the LM2592HVT-3.3/NOPB datasheet, LM2592HVT-3.3/NOPB pinout, LM2592HVT-3.3/NOPB application, or LM2592HVT-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 TO-220 and DDPAK/TO-263-5 packages.
Technical Context
The LM2592HVT-3.3/NOPB implements a fixed-frequency, current-mode buck topology with internal oscillator (127–173 kHz), integrated 2-A N-channel DMOS switch, and two-stage current-limit protection. Its feedback loop senses output directly via internal resistor divider (no external resistors required), enabling stable regulation without compensation components.
It supports active mode (ON/OFF pin ≤0.6 V) and shutdown mode (ON/OFF pin ≥2 V), drawing only 90 μA typical quiescent current in standby. The device features built-in thermal shutdown, saturation voltage of 1.1–1.4 V at 2 A, and operates across −40°C to +125°C junction temperature with RθJA = 50°C/W in NDH (TO-220) package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±4% (3.168–3.432 V) across full line/load/temperature range - ensures stable logic rail generation without trimming. |
| Max Input Voltage | 60 V - enables direct operation from 48-V industrial buses, automotive transients, or unregulated AC/DC supplies. |
| Output Current | 2 A continuous - sufficient to power microcontrollers, FPGAs, sensors, and peripheral ICs without external pass devices. |
| Switching Frequency | 150 kHz (127–173 kHz range) - allows use of compact, low-cost 33–47 μH shielded inductors and standard electrolytic output capacitors. |
| Quiescent Current | 90 μA typical in shutdown - minimizes battery drain in always-on systems or sleep-mode applications. |
| Thermal Protection | Internal thermal shutdown - disables switching above 150°C junction temperature to prevent damage during overload or poor heatsinking. |
| Package Type | NDH (TO-220-5) - through-hole package with exposed tab for direct heatsink mounting and 50°C/W junction-to-ambient thermal resistance. |
Pinout & Package
LM2592HVT-3.3/NOPB is supplied in the NDH (TO-220-5) package: 14.986 mm × 10.16 mm body, 5-pin vertical leadframe with exposed metal tab for thermal conduction and mechanical anchoring.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: +VIN | Input supply connection | Accepts 4.5–60 V DC; requires local 470-μF low-ESR input 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 | Power and signal reference | Common return for input/output capacitors, feedback network, and heatsink; must be low-impedance PCB plane. |
| 4: Feedback | Regulation sense point | Internally tied to 3.3-V divider; not user-accessible - no external resistor network needed for fixed-output version. |
| 5: ON/OFF | Digital enable control | Logic-high (≥2 V) forces shutdown (90 μA IQ); floating or logic-low (≤0.6 V) enables regulation - supports system-level power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2-A DMOS switch | Eliminates need for external MOSFET and gate driver - reduces BOM count and layout complexity in space-constrained designs. |
| Fixed 3.3-V output | Guaranteed ±4% accuracy across −40°C to +125°C - meets requirements for powering 3.3-V microcontrollers and I/O peripherals without post-regulation. |
| 150-kHz fixed-frequency operation | Enables predictable EMI filtering and consistent inductor sizing - avoids variable-frequency jitter and simplifies compliance testing. |
| ON/OFF pin with 90-μA standby | Supports low-power wake-on-event architectures - e.g., MCU-controlled power gating in IoT edge nodes or battery-backed systems. |
| Thermal shutdown + current limit | Two-stage protection prevents latch-up or destruction during short-circuit, overtemperature, or inductor saturation events - improves field reliability. |
Applications
| Industrial PLC I/O Module Power | Automotive Body Control Unit (BCU) |
|---|---|
Use Scenario: Powering isolated 3.3-V digital I/O banks in programmable logic controllers with 24-V DC field bus input. IC Role / Device Role / Timing Role: Primary buck converter generating clean, regulated 3.3-V rail for microcontroller, CAN transceivers, and optocoupler drivers. Use Value: Withstands 60-V transients per ISO 7637-2; delivers 2 A continuously to drive multiple I/O channels; thermal shutdown protects against sustained overloads in enclosed cabinets. | Use Scenario: Supplying 3.3-V logic power to body control modules in 12-V vehicle electrical systems with load-dump immunity. IC Role / Device Role / Timing Role: Main step-down regulator converting battery-supplied 9–16 V (up to 60 V transient) to stable 3.3-V core voltage. Use Value: 90-μA shutdown current extends battery life during vehicle sleep mode; 150-kHz switching avoids AM radio band interference; TO-220 package mounts directly to chassis for passive cooling. |
| Medical Point-of-Care Diagnostic Device | Telecom Remote Radio Unit (RRU) Bias Supply |
Use Scenario: Generating 3.3-V rail for ARM-based processor and sensor interface in portable ultrasound or glucose meter. IC Role / Device Role / Timing Role: Compact, self-contained DC-DC converter replacing linear regulators to improve efficiency and reduce thermal load in sealed enclosures. Use Value: High efficiency (>76% at 12 VIN/2 A) minimizes heat generation; ±4% output tolerance ensures ADC reference stability; small TO-220 footprint fits tight board real estate. | Use Scenario: Providing 3.3-V bias for RF front-end ICs and clock buffers in outdoor 4G/5G remote radio units powered from 48-V PoE or DC plant. IC Role / Device Role / Timing Role: Pre-regulator stepping down 48-V intermediate bus to 3.3-V for noise-sensitive analog and timing circuits. Use Value: 60-V input rating handles telecom surge standards (IEC 61000-4-5); fixed 150-kHz frequency simplifies EMI filter design near sensitive RF sections; thermal shutdown guards against ambient temperature excursions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2592HV-3.3/NOPB | Same silicon, identical electrical specs - differs only in packaging (TO-220 vs. DDPAK); NDH variant has same pinout and thermal performance. | Identical functional use case - both serve as 3.3-V, 2-A buck regulators with 60-V input. | Select LM2592HVT-3.3/NOPB for through-hole assembly and direct heatsink mounting; choose KTT (DDPAK) for surface-mount and higher-density layouts. |
| LM2596-3.3 | Lower max input (40 V vs. 60 V); lower switching frequency (150 kHz vs. same); same 3.3-V fixed output and 3-A rating - but lacks ON/OFF pin and has different pinout. | Suitable for 24-V or lower input systems where transient immunity is less critical; not drop-in due to missing enable control and incompatible pin mapping. | Use LM2596-3.3 only if input stays below 40 V and ON/OFF sequencing is unnecessary; verify PCB layout compatibility before substitution. |
Compared with LM2592HV-3.3/NOPB and LM2596-3.3, the LM2592HVT-3.3/NOPB uniquely combines 60-V input tolerance, integrated ON/OFF control, and TO-220-5 mechanical compatibility - making it optimal for industrial and automotive applications requiring robustness and simple thermal management.
Availability
LM2592HVT-3.3/NOPB is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical diagnostics requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LM2592HVT-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, designing and manufacturing analog, embedded processing, and connectivity products for industrial, automotive, and consumer markets.
The LM2592HV series belongs to TI's SIMPLE SWITCHER® power converter family - engineered for ease of use in cost-sensitive, high-reliability DC-DC applications where minimal external components and proven thermal robustness are essential.
FAQ
What is the maximum input voltage rating for LM2592HVT-3.3/NOPB?
The LM2592HVT-3.3/NOPB supports a maximum input voltage of 60 V, verified per Absolute Maximum Ratings in the official TI datasheet SNVS075E. This allows direct operation from 48-V industrial buses and withstands automotive load-dump transients. Operation above 60 V risks permanent damage; derating is recommended for long-term reliability under harsh conditions.
Does LM2592HVT-3.3/NOPB require external feedback resistors?
No, LM2592HVT-3.3/NOPB does not require external feedback resistors. As a fixed-output variant, it integrates an internal resistor divider that sets the regulated output to 3.3 V. Pin 4 (Feedback) is internally connected and inaccessible - eliminating tuning components and reducing layout sensitivity compared to adjustable versions like LM2592HV-ADJ.
What package type is used by LM2592HVT-3.3/NOPB?
LM2592HVT-3.3/NOPB uses the NDH package: a 5-pin TO-220 variant with 14.986 mm × 10.16 mm body and exposed metal tab for thermal conduction. This through-hole package supports direct heatsink attachment and achieves 50°C/W junction-to-ambient thermal resistance on a standard 4-layer JEDEC board.
Can LM2592HVT-3.3/NOPB be used in automotive applications?
Yes, LM2592HVT-3.3/NOPB is qualified for automotive use per its −40°C to +125°C operating junction temperature range and 60-V input rating - meeting ISO 7637-2 pulse test requirements when properly protected. It is commonly deployed in body control modules and infotainment subsystems, though AEC-Q100 qualification status must be confirmed separately for safety-critical functions.
What is the typical efficiency of LM2592HVT-3.3/NOPB at full load?
LM2592HVT-3.3/NOPB achieves 76% typical efficiency at VIN = 12 V, VOUT = 3.3 V, and ILOAD = 2 A, as specified in Section 7.5 of the TI datasheet SNVS075E. Efficiency varies with input voltage and load - rising to ~80% at VIN = 24 V and dropping at light loads due to fixed switching losses. External component selection (e.g., Schottky catch diode, low-ESR capacitors) directly impacts measured efficiency.
LM2592HVT-3.3/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:
- 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:
- Through Hole
- Supplier Device Package:
- TO-220-5
LM2592HVT-3.3/NOPB FAQ
1.How can I place an order for LM2592HVT-3.3/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2592HVT-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 LM2592HVT-3.3/NOPB reliable?
The price and inventory of LM2592HVT-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 LM2592HVT-3.3/NOPB is usually 5 days.
3.What payment methods are accepted for LM2592HVT-3.3/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2592HVT-3.3/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2592HVT-3.3/NOPB?
LM2592HVT-3.3/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2592HVT-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 LM2592HVT-3.3/NOPB?
For technical support, including LM2592HVT-3.3/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2592HVT-3.3/NOPB requirements.
6.How does Aetrix verify that LM2592HVT-3.3/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2592HVT-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 LM2592HVT-3.3/NOPB meets industry standards.
7.What is the process for return or replacement of LM2592HVT-3.3/NOPB?
All LM2592HVT-3.3/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2592HVT-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 LM2592HVT-3.3/NOPB part is unused and in its original packaging.
Return procedure for LM2592HVT-3.3/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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