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Texas Instruments LM2590HVT-5.0
- Part No.:
- LM2590HVT-5.0
- Manufacturer:
- Texas Instruments
- Package:
- TO-220-7 Formed Leads
- Datasheet:
-
LM2590HVT-5.0.pdf
- Description:
- IC REG BUCK 5V 1A TO220-7
- Quantity:
- Payment:
- Shipping:
Inventory:4,580
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Product details
Overview
LM2590HVT-5.0 from Texas Instruments is a monolithic 1-A, 150-kHz non-synchronous step-down (buck) DC-DC regulator with fixed 5.0-V output, 60-V maximum input voltage, ±4% output voltage tolerance over line and load, and integrated shutdown/soft-start and error flag functions. It delivers stable 5-V power for industrial control modules, automotive subsystems, and distributed power rails requiring high-input-voltage conversion.
For engineers reviewing the LM2590HVT-5.0 datasheet, LM2590HVT-5.0 pinout, LM2590HVT-5.0 application, or LM2590HVT-5.0 equivalent, key selection criteria include its 60-V input rating, 1-A guaranteed load current, TO-220 thermal performance, error flag delay timing, and soft-start programmability via external capacitor on the SD/SS pin.
Technical Context
The LM2590HVT-5.0 integrates a fixed-frequency 150-kHz oscillator, internal compensation, thermal shutdown, and two-stage current limiting. Its non-synchronous architecture uses an external Schottky catch diode and requires no external feedback resistors for the fixed 5.0-V version.
It operates in continuous conduction mode at full load with typical efficiency of 82% at 12-V input/1-A load, and supports undervoltage lockout via external circuitry on the SD/SS pin. The error flag (open-collector) asserts low when output drops below 95% of nominal, with programmable delay via capacitor on Pin 5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±4% over full line (7–60 V), load (0.2–1 A), and temperature (–40°C to +125°C) range |
| Max Input Voltage | 60 V - enables direct regulation from 48-V industrial buses or automotive transients without pre-regulation |
| Switching Frequency | 150 kHz (±15%) - allows use of compact 33–68 µH inductors and reduces EMI compared to lower-frequency buck converters |
| Output Current | Guaranteed 1 A DC - supports single-rail microcontroller systems, sensors, and interface ICs without derating |
| Quiescent Current | 90 µA typical in shutdown - minimizes standby power in always-on applications such as telematics or alarm systems |
| Thermal Resistance | RθJA = 50°C/W (TO-220, 1 in² copper) - enables 1-A operation up to +125°C ambient with minimal heatsinking |
Pinout & Package
LM2590HVT-5.0 is supplied in a 7-pin TO-220 package (NDZ) with tab-connected to Pin 4 (GND); body size 14.99 mm × 10.16 mm. The tab provides primary thermal path to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Positive input supply | Accepts 7–60 V unregulated DC; requires ≥330 µF low-ESR input capacitor to handle peak switch current |
| 2 - Output | Internal power switch drain | Drives external catch diode (e.g., 1N5824); swings between ~VIN–0.95 V and –0.5 V during switching |
| 3 - Flag | Open-collector error flag | Active-low signal (≤0.7 V @ 3 mA sink) when output < 95% of 5.0 V; requires external pull-up resistor |
| 4 - GND | Circuit ground reference | Common return for input cap, output cap, feedback, and thermal tab; must be low-impedance PCB plane |
| 5 - Delay | Flag delay timing node | Charged by 3 µA internal current source; 0.1 µF capacitor yields ~100-ms delay before Flag goes high at startup |
| 6 - Feedback | Output voltage sense | Internally connected to 5.0-V output for fixed version; not user-accessible - no external resistor divider needed |
| 7 - SD/SS | Shutdown/Soft-start control | Drives low (≤0.6 V) for shutdown (90 µA IQ); capacitor here sets output ramp time (e.g., 10 nF ≈ 20 ms) |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage input capability | 60-V absolute max rating supports 48-V industrial, 36-V automotive, and PoE+ auxiliary rails without external protection |
| Integrated error flag with delay | Programmable power-good assertion delay (via CDELAY) prevents false flag assertion during output rise time |
| Two-stage current limiting | Peak switch current limit (1.9 A typ.) followed by foldback reduces stress during short-circuit events |
| Thermal shutdown protection | Activates at 150°C junction temperature and latches off until cool-down - prevents permanent damage under overload |
| Low-standby IQ | 90 µA shutdown current enables battery-backed systems (e.g., CAN nodes, RTUs) to operate >1 year on coin cell |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
|
Use Scenario: Powering isolated digital I/O drivers, ADC references, and RS-485 transceivers from a 24-V or 48-V backplane. IC Role / Device Role / Timing Role: Primary 5-V buck regulator delivering 1-A regulated rail; replaces discrete MOSFET+controller designs. Use Value: Eliminates need for external feedback network and compensates for wide input variation (24–48 V) while maintaining ±4% output accuracy. |
Use Scenario: Supplying 5-V logic for door module MCUs, LIN transceivers, and LED drivers in 12-V vehicle architectures with load dump immunity. IC Role / Device Role / Timing Role: High-input-voltage step-down converter handling 60-V transients per ISO 7637-2; provides clean 5-V rail with error flag for diagnostics. Use Value: Withstands automotive load dump without external TVS; error flag signals MCU on output dropout during cranking (battery dip to 6 V). |
| Distributed Telecom Power | Test & Measurement Equipment |
|
Use Scenario: Generating local 5-V bias for op-amps, DACs, and FPGA I/O banks in modular telecom cards powered from –48-V DC distribution. IC Role / Device Role / Timing Role: Non-isolated buck converter accepting positive 48-V input (derived from –48-V bus via polarity inversion) to produce 5-V output. Use Value: 150-kHz switching enables small magnetics; thermal design supports convection cooling in dense card cages without forced air. |
Use Scenario: Providing stable 5-V supply for precision analog front-ends, calibration references, and microcontroller subsystems in portable DMMs and oscilloscopes. IC Role / Device Role / Timing Role: Primary regulated rail generator with soft-start to prevent inrush into large output capacitance (≥220 µF). Use Value: Soft-start (via SD/SS capacitor) limits input current surge to <500 mA during power-up, protecting upstream LDOs or batteries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2590T-5.0 | Same architecture but 40-V max input (vs. 60 V); RθJA = 65°C/W (TO-220); no error flag delay function | Suitable only for ≤36-V systems; lacks programmable flag delay - less robust for power-good sequencing | Select LM2590HVT-5.0 when input exceeds 40 V or flag delay is required for system-level power sequencing. |
| LM2596HV-5.0 | Higher 150-kHz frequency same, but 3-A rated; different pinout (no Delay pin); no error flag; RθJA = 45°C/W (TO-220) | Supports higher load current but removes supervision features - requires external monitoring circuitry | Choose LM2590HVT-5.0 when diagnostic flag, delay timing, and 1-A precision regulation outweigh need for >1-A current. |
Compared with LM2590T-5.0 and LM2596HV-5.0, the LM2590HVT-5.0 uniquely combines 60-V input tolerance, integrated error flag with programmable delay, and guaranteed 1-A output in a thermally optimized TO-220 package - making it optimal for safety-critical or high-reliability 5-V rail generation where supervision and transient resilience are mandatory.
Availability
LM2590HVT-5.0 is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and telecom infrastructure requiring stable component supply with long-term manufacturability and consistent parametric performance.
Supply support for LM2590HVT-5.0 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 ICs, embedded processors, and power management solutions for industrial, automotive, and communications markets.
The LM2590HV family was developed specifically for high-input-voltage DC-DC conversion in harsh environments - targeting applications needing reliable 1-A buck regulation from 7–60 V inputs with built-in fault monitoring and thermal protection.
FAQ
What is the maximum input voltage rating for the LM2590HVT-5.0?
The LM2590HVT-5.0 has an absolute maximum input voltage rating of 63 V, with recommended operating range from 7 V to 60 V. This 60-V upper limit enables direct regulation from 48-V industrial buses and withstands automotive load dump transients per ISO 7637-2 without external clamping. Exceeding 60 V risks permanent damage even with brief exposure.
Does the LM2590HVT-5.0 require external feedback resistors to set the 5.0-V output?
No, the LM2590HVT-5.0 does not require external feedback resistors. As a fixed-output variant, its feedback pin (Pin 6) is internally connected to the 5.0-V output node. This eliminates resistor tolerance errors and layout sensitivity, ensuring the specified ±4% output accuracy over temperature and load without user configuration.
How is the error flag delay programmed on the LM2590HVT-5.0?
The error flag delay on the LM2590HVT-5.0 is programmed using a capacitor (CDELAY) connected from Pin 5 (Delay) to GND. An internal 3-µA current source charges this capacitor; when voltage reaches 1.25 V, the Flag pin (Pin 3) transitions high. A 0.1-µF capacitor yields approximately 100 ms delay, enabling reliable power-good assertion after output stabilization.
Can the LM2590HVT-5.0 be used in automotive applications with 12-V battery input?
Yes, the LM2590HVT-5.0 is qualified for automotive use with 12-V battery systems. Its 60-V input rating handles cold-crank dips (down to 6 V) and load dump spikes (up to 60 V), while the integrated thermal shutdown and current limiting protect against sustained overloads. TI specifies operation from –40°C to +125°C junction temperature, meeting AEC-Q100 stress requirements.
What is the typical efficiency of the LM2590HVT-5.0 at full load?
The LM2590HVT-5.0 achieves 82% typical efficiency at 12-V input, 5-V/1-A output, per TI's Electrical Characteristics table. Efficiency remains above 75% across 7–40 V input range at 1-A load. Performance depends on external components: using low-ESR capacitors (e.g., 220 µF output) and a Schottky catch diode (e.g., 1N5824) is essential to reach published values.
LM2590HVT-5.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- TO-220-7 Formed Leads
- 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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 150kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-7
LM2590HVT-5.0 FAQ
1.How can I place an order for LM2590HVT-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2590HVT-5.0 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 LM2590HVT-5.0 reliable?
The price and inventory of LM2590HVT-5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2590HVT-5.0 is usually 5 days.
3.What payment methods are accepted for LM2590HVT-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2590HVT-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2590HVT-5.0?
LM2590HVT-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2590HVT-5.0 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 LM2590HVT-5.0?
For technical support, including LM2590HVT-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2590HVT-5.0 requirements.
6.How does Aetrix verify that LM2590HVT-5.0 is sourced from the original manufacturer or authorized distributors?
All LM2590HVT-5.0 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 LM2590HVT-5.0 meets industry standards.
7.What is the process for return or replacement of LM2590HVT-5.0?
All LM2590HVT-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM2590HVT-5.0, 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 LM2590HVT-5.0 part is unused and in its original packaging.
Return procedure for LM2590HVT-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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