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Texas Instruments LM2590HVS-5.0
- Part No.:
- LM2590HVS-5.0
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
LM2590HVS-5.0.pdf
- Description:
- IC REG BUCK 5V 1A TO263
- Quantity:
- Payment:
- Shipping:
Inventory:2,330
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Product details
Overview
LM2590HVS-5.0 from Texas Instruments is a monolithic 1-A, 150-kHz non-synchronous step-down (buck) DC-DC converter with fixed 5.0-V output, 4.5–60-V input range, and ±4% output voltage tolerance over line/load/temperature. It integrates internal frequency compensation, thermal shutdown, current limiting, and an error flag for power-good monitoring in industrial power supplies.
For engineers reviewing the LM2590HVS-5.0 datasheet, LM2590HVS-5.0 pinout, LM2590HVS-5.0 application, or LM2590HVS-5.0 equivalent, key selection considerations include its 60-V max input rating, 90-µA standby current in shutdown mode, 1.23-V internal feedback reference, and TO-263-7 package with exposed thermal pad for high-power-density designs.
Technical Context
The LM2590HVS-5.0 implements a fixed-frequency PWM control architecture with an internal 150-kHz oscillator, enabling predictable EMI behavior and simplified filter design. Its non-synchronous topology uses an integrated NPN bipolar switch with 0.95-V typical saturation voltage at 1 A, requiring an external Schottky catch diode (e.g., 1N5824).
Supervisory functions include undervoltage lockout via SD/SS pin threshold (1.3 V typ), programmable soft-start using an external capacitor on Pin 7, and a delay-controlled open-collector flag output (Pin 3) that asserts low when output drops below 95% of nominal - with delay timing set by a capacitor on Pin 5 and internal 3-µA current source.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±4% over –40°C to +125°C, 7–60 V input, 0.2–1 A load - ensures stable rail for microcontrollers and sensors without external feedback resistors. |
| Input Voltage Range | 4.5 V to 60 V - supports wide-input industrial, automotive, and telecom applications including 24-V and 48-V bus systems. |
| Switching Frequency | 150 kHz (±15%) - enables use of compact 33–68 µH inductors and reduces switching loss vs. lower-frequency alternatives. |
| Max Output Current | 1 A DC continuous - sufficient for powering FPGA I/O banks, analog front-ends, or multiple logic ICs from a single regulator stage. |
| Standby Quiescent Current | 90 µA typical at VIN = 60 V - minimizes battery drain in always-on systems during shutdown mode. |
| Thermal Protection | Internal thermal shutdown with automatic recovery - prevents permanent damage during overload or poor heatsinking conditions. |
| Efficiency | 82% typical at VIN = 12 V, IOUT = 1 A - balances performance and cost for medium-power buck conversion without synchronous rectification. |
Pinout & Package
LM2590HVS-5.0 is housed in a 7-pin TO-263 (KTW) surface-mount package with exposed thermal pad (10.10 mm × 8.89 mm), optimized for PCB heat dissipation in high-current applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VIN | Positive input supply | Accepts 4.5–60 V unregulated DC; requires ≥330 µF low-ESR input capacitor to handle peak switch currents and suppress transients. |
| 2: Output | Internal NPN switch collector | Swings between ~VIN–0.95 V and –0.5 V; connects to inductor and catch diode anode - forms main power path. |
| 3: Flag | Open-collector error flag | Active-low signal (≤0.7 V @ 3 mA sink) when VOUT < 4.75 V; requires external pull-up resistor (e.g., 4.7 kΩ) to monitored rail. |
| 4: GND | Circuit ground reference | Common return for internal circuitry, feedback divider, and thermal pad - must be connected to large copper area for thermal management. |
| 5: Delay | Flag delay timing node | Charged by internal 3-µA current source; time to flag assertion = CDELAY × 1.3 V / 3 µA - sets power-good delay after regulation achieved. |
| 6: Feedback | Regulation sense input | Internally tied to 5-V output; not user-accessible in fixed versions - eliminates need for external resistor divider. |
| 7: SD/SS | Shutdown/Soft-start control | Drives low (≤0.6 V) for shutdown (90 µA IQ); floating or >2 V enables operation; capacitor here controls output voltage ramp rate. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1-A NPN switch | Eliminates need for external high-side transistor - reduces BOM count and layout complexity in buck topologies. |
| Programmable soft-start | Capacitor on SD/SS pin (Pin 7) controls output voltage rise time - prevents inrush current into downstream capacitive loads. |
| Power-good flag with delay | Open-collector Flag (Pin 3) + Delay (Pin 5) enable reliable system sequencing - avoids false assertions during startup transients. |
| Wide-input 60-V rating | Supports direct connection to 48-V industrial buses or automotive cold-crank scenarios without pre-regulation. |
| Thermal shutdown & current limit | Two-stage current limiting and junction temperature cutoff protect against short-circuit and overheating failures in field-deployed equipment. |
Applications
| Industrial PLC Power Supply | Automotive Body Control Module |
|---|---|
Use Scenario: Providing regulated 5-V rail for microcontroller, CAN transceiver, and sensor interface in programmable logic controller backplane. IC Role / Device Role / Timing Role: Primary step-down regulator converting 24-V DC bus to isolated 5-V logic supply with power-good signaling for system reset coordination. Use Value: 60-V input rating withstands 24-V bus transients; 82% efficiency minimizes thermal load in sealed enclosures; flag output synchronizes firmware boot sequence. | Use Scenario: Generating 5-V supply for body electronics (door locks, lighting controllers) in 12-V automotive systems with cold-crank tolerance. IC Role / Device Role / Timing Role: Non-synchronous buck converter delivering 1-A load current while surviving 60-V load-dump pulses per ISO 7637-2. Use Value: 90-µA shutdown current extends battery life during vehicle sleep mode; thermal shutdown prevents failure during under-hood temperature excursions. |
| Telecom Remote Radio Unit | Test Equipment Auxiliary Supply |
Use Scenario: Converting 48-V PoE++ or telecom rectifier output to 5-V for FPGA configuration and ADC reference in remote radio head. IC Role / Device Role / Timing Role: High-input-voltage buck regulator with precise 5-V output and power-good flag for FPGA configuration state machine. Use Value: ±4% output tolerance ensures stable ADC reference; 150-kHz switching allows compact magnetics compatible with dense RF board layouts. | Use Scenario: On-board 5-V supply for digital I/O, calibration DACs, and communication interfaces in benchtop test instruments. IC Role / Device Role / Timing Role: Fixed-output DC-DC converter providing low-noise, well-regulated 5-V rail with soft-start to prevent measurement disturbance during power-up. Use Value: Soft-start capacitor on SD/SS pin eliminates output overshoot; TO-263 thermal pad enables conduction cooling in fanless instrument chassis. |
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 | TO-220-7 package (14.99 mm × 10.16 mm); higher RθJA (50°C/W vs. 20–30°C/W for TO-263); identical electrical specs. | Suitable for through-hole prototyping or low-volume assemblies where thermal mass of TO-220 suffices. | Select LM2590T-5.0 when manual soldering, heatsink mounting, or legacy footprint compatibility is required. |
| LM2596S-5.0 | Lower max input (40 V vs. 60 V); 150-kHz frequency; same 1-A rating but no flag/delay pins - lacks power-good supervision. | Applicable where input stays ≤40 V and system-level power sequencing is handled externally. | Choose LM2596S-5.0 only if 60-V input tolerance and flag functionality are unnecessary - lower cost but reduced feature set. |
Compared with LM2590T-5.0, the LM2590HVS-5.0 offers superior thermal performance in surface-mount layouts; versus LM2596S-5.0, it adds critical supervision features and 20-V higher input capability - making it essential for harsh-environment or safety-monitored designs.
Availability
LM2590HVS-5.0 is available at Aetrix Electronics and suitable for industrial PLC power supplies, automotive body control modules, and telecom remote radio units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2590HVS-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, specializing in analog, embedded processing, and power management technologies with broad industrial and automotive design expertise.
The LM2590HV product line was designed specifically for rugged, wide-input-voltage DC-DC conversion in industrial automation, transportation, and infrastructure equipment - emphasizing reliability, thermal robustness, and integrated protection features.
FAQ
What is the maximum input voltage rating for the LM2590HVS-5.0?
The LM2590HVS-5.0 supports a maximum input voltage of 60 V, with absolute maximum rating at 63 V. This allows direct operation from 48-V telecom systems, 24-V industrial buses, and automotive applications subject to load-dump transients. Operation above 60 V violates recommended conditions and risks permanent damage.
Does the LM2590HVS-5.0 require external feedback resistors to set the 5-V output?
No, the LM2590HVS-5.0 is a fixed-output version with internal feedback network - Pin 6 (Feedback) is internally connected to the 5-V output. Unlike the adjustable LM2590HV-ADJ variant, no external resistors are needed, simplifying design and improving output accuracy stability.
How does the Flag and Delay functionality work on the LM2590HVS-5.0?
The LM2590HVS-5.0 uses Pin 3 (Flag) as an open-collector output that goes low when output drops below 4.75 V (95% of 5 V). Pin 5 (Delay) accepts a capacitor to program the time delay before Flag asserts high after regulation is achieved - governed by internal 3-µA current source charging to 1.3 V threshold.
What package type is used for the LM2590HVS-5.0, and how should the thermal pad be handled?
The LM2590HVS-5.0 uses a 7-pin TO-263 (KTW) package with exposed thermal pad. The pad must be soldered to a minimum 2.5 in² copper area on the PCB for optimal thermal performance (RθJA ≈ 30°C/W). For highest reliability, connect the pad directly to system ground and use multiple thermal vias.
Can the LM2590HVS-5.0 be used in synchronous rectification configurations?
No, the LM2590HVS-5.0 is a non-synchronous buck regulator with an integrated NPN switch and requires an external Schottky catch diode (e.g., 1N5824). It does not support synchronous rectification - no gate drive signals or complementary switch control are provided. For synchronous operation, consider TI's TPS543x or LM5116 families instead.
LM2590HVS-5.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- 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:
- Surface Mount
- Supplier Device Package:
- TO-263 (DDPAK-7)
LM2590HVS-5.0 FAQ
1.How can I place an order for LM2590HVS-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2590HVS-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 LM2590HVS-5.0 reliable?
The price and inventory of LM2590HVS-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 LM2590HVS-5.0 is usually 5 days.
3.What payment methods are accepted for LM2590HVS-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2590HVS-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2590HVS-5.0?
LM2590HVS-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2590HVS-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 LM2590HVS-5.0?
For technical support, including LM2590HVS-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2590HVS-5.0 requirements.
6.How does Aetrix verify that LM2590HVS-5.0 is sourced from the original manufacturer or authorized distributors?
All LM2590HVS-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 LM2590HVS-5.0 meets industry standards.
7.What is the process for return or replacement of LM2590HVS-5.0?
All LM2590HVS-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM2590HVS-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 LM2590HVS-5.0 part is unused and in its original packaging.
Return procedure for LM2590HVS-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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