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Texas Instruments LM2575HVT-5.0/NOPB
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- Part No.:
- LM2575HVT-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- TO-220-5
- Datasheet:
-
LM2575HVT-5.0/NOPB.pdf
- Description:
- IC REG BUCK 5V 1A TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:434
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Product details
Overview
LM2575HVT-5.0/NOPB from Texas Instruments is a monolithic 1A step-down (buck) switching voltage regulator with fixed 5.0V output, 60V maximum input voltage rating, 52 kHz fixed-frequency internal oscillator, ±4% output voltage tolerance, and integrated thermal shutdown and cycle-by-cycle current limiting. It replaces linear regulators in industrial power supplies requiring high efficiency and minimal external components.
For engineers reviewing the LM2575HVT-5.0/NOPB datasheet, LM2575HVT-5.0/NOPB pinout, LM2575HVT-5.0/NOPB application, or LM2575HVT-5.0/NOPB equivalent, this page delivers verified technical context, TO-220 package pin mapping, real-world application constraints, and validated alternative options for buck converter design validation and BOM optimization.
Technical Context
The LM2575HVT-5.0/NOPB implements a fixed-frequency PWM buck topology with internal NPN switch, feedback comparator, oscillator, and protection circuitry. Its 52 kHz switching frequency enables use of standard off-the-shelf inductors and reduces EMI compared to higher-frequency alternatives.
It operates across an input range of 8–60V and maintains regulated 5.0V output at up to 1A load current with line regulation ≤0.5% and load regulation ≤1.0%. Standby current is 50 μA typical when TTL-level shutdown is asserted via the ON/OFF pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±4% over full temperature and load range - ensures stable logic supply under varying conditions. |
| Input Voltage Range | 8V to 60V - supports wide-input industrial, automotive, and telecom power rails without pre-regulation. |
| Output Current | 1A continuous - sufficient for powering microcontrollers, sensors, and interface ICs directly. |
| Switching Frequency | 52 kHz fixed - simplifies EMI filtering and allows use of low-cost, high-saturation-current inductors. |
| Efficiency | 77% at VIN = 12V, IOUT = 1A - reduces thermal load vs. linear regulators and minimizes heatsink requirements. |
| Thermal Shutdown | Active at TJ ≥150°C - protects device during overload or poor PCB thermal design. |
| Standby Current | 50 μA typical - enables low-power system sleep modes without disabling upstream supplies. |
Pinout & Package
LM2575HVT-5.0/NOPB uses a 5-lead TO-220 package (package number NDH0005D) with exposed metal tab electrically connected to Pin 2 (Output). Mounting the tab to a heatsink improves thermal performance (θJA = 45°C/W with 4 in² copper).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Input | Main DC input connection | Accepts 8–60V unregulated supply; requires local 100 μF/75V electrolytic bypass capacitor. |
| 2 - Output | Regulated 5.0V output node | Drives 1A load; connects to inductor and output capacitor; tab is internally tied to this pin. |
| 3 - Ground | Power and signal reference | Low-impedance return path for switch current and feedback network; must be single-point grounded. |
| 4 - Feedback | Voltage sense input | Internally referenced to 1.23V; unused in fixed-output versions but internally connected to set 5.0V. |
| 5 - ON/OFF | TTL-compatible enable control | Logic-high (>2.2V) enables regulation; logic-low (<0.8V) disables output and reduces quiescent current to 50 μA. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated NPN power switch | Eliminates need for external transistor and driver, reducing component count and layout complexity. |
| Internal frequency compensation | Enables stable operation with only four external components: input cap, output cap, inductor, and catch diode. |
| Cycle-by-cycle current limit | Protects against short-circuit and overload by limiting peak switch current to 1.7–3.2A depending on temperature. |
| Wide-input HV variant | 60V max input supports 48V systems, PoE-powered equipment, and battery-backed industrial rails. |
| TTL shutdown capability | Allows system-level power sequencing and low-power sleep states without auxiliary control circuitry. |
Applications
| Industrial Power Supply | Automotive Body Control Module |
|---|---|
Use Scenario: Converting 24V vehicle battery rail to stable 5V for MCU and CAN transceivers. IC Role / Device Role / Timing Role: Primary buck regulator providing isolated, efficient 5V domain with fault protection. Use Value: Withstands load dump transients up to 60V and maintains regulation during cold-crank (6.5V min), eliminating need for external transient suppressors. |
Use Scenario: On-board 5V supply for door module microcontroller, window motor drivers, and LED indicators. IC Role / Device Role / Timing Role: Central power management IC delivering regulated 5V with thermal and overcurrent protection. Use Value: 1A output supports simultaneous actuation of multiple loads; 52 kHz switching avoids AM radio band interference. |
| Programmable Logic Controller (PLC) I/O Card | Test & Measurement Equipment |
Use Scenario: Local 5V rail generation on modular I/O cards powered from 48V backplane. IC Role / Device Role / Timing Role: Point-of-load (POL) buck converter supplying isolated logic and sensor interface circuits. Use Value: 60V input rating eliminates need for intermediate 12V stage; TO-220 package allows direct heatsinking to card chassis. |
Use Scenario: Internal 5V supply for digital control section in portable oscilloscopes and multimeters. IC Role / Device Role / Timing Role: High-efficiency pre-regulator feeding low-noise LDOs for analog front-end circuitry. Use Value: 77% efficiency at 1A reduces self-heating in sealed enclosures; standby mode enables battery-saving deep-sleep states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2575T-5.0 | Standard-voltage version: max input 40V vs. 60V for LM2575HVT-5.0/NOPB; identical pinout, package, and 5V output spec. | Not suitable for >40V input systems (e.g., 48V telecom, industrial 24/48V dual-rail designs). | Select LM2575T-5.0 only if input never exceeds 40V and cost sensitivity outweighs future-proofing. |
| LM2596S-5.0 | Higher 3A output current, 150 kHz switching, and improved efficiency (up to 92%), but requires different inductor and layout; SO-8 package vs. TO-220. | Supports higher-power loads but demands revised thermal design and EMI filtering due to higher frequency. | Choose LM2596S-5.0 when >1A output or tighter size constraints justify redesign; not drop-in compatible. |
Compared with LM2575T-5.0, LM2575HVT-5.0/NOPB adds 20V input headroom critical for robustness in variable industrial rails; versus LM2596S-5.0, it trades higher current and efficiency for proven reliability, simpler magnetics, and TO-220 thermal handling in legacy designs.
Availability
LM2575HVT-5.0/NOPB is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and test equipment requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for LM2575HVT-5.0/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 leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability power conversion ICs.
The LM2575HV product line was designed specifically for industrial and automotive applications demanding extended input voltage range (up to 60V), rugged thermal performance, and minimal external component count in buck regulator implementations.
FAQ
What is the maximum input voltage rating for LM2575HVT-5.0/NOPB?
The LM2575HVT-5.0/NOPB supports a maximum input voltage of 60V, confirmed in the Absolute Maximum Ratings table of the official TI datasheet (SNVS106E). This distinguishes it from the standard LM2575 series (40V max) and enables use in 48V systems, industrial 24/48V dual-rail supplies, and battery-backed applications where transient overvoltage may occur. Operation above 60V risks permanent damage.
Does LM2575HVT-5.0/NOPB require external compensation components?
No, LM2575HVT-5.0/NOPB includes internal frequency compensation and requires only four external components: input capacitor, output capacitor, power inductor, and catch diode. The internal compensation network is optimized for stability with standard 330 µH inductors and 330–470 µF output capacitors, eliminating the need for external RC networks or loop compensation adjustments in typical applications.
Can LM2575HVT-5.0/NOPB be used in adjustable-output configurations?
No, LM2575HVT-5.0/NOPB is a fixed-output variant with internal resistor divider setting 5.0V output; its Feedback (Pin 4) is not accessible for external programming. For adjustable operation, use LM2575HVT-ADJ, which provides a 1.23V reference and requires two external resistors to set output voltage between 1.23V and 57V. Attempting to modify LM2575HVT-5.0/NOPB for adjustability will result in incorrect regulation or failure.
What thermal performance can be expected from LM2575HVT-5.0/NOPB in a TO-220 package?
With proper PCB heatsinking (4 in² copper area), LM2575HVT-5.0/NOPB achieves θJA = 45°C/W, allowing ~1A continuous output at ambient temperatures up to +75°C without additional heatsink. Without copper area, θJA rises to 65°C/W, limiting full-load operation to ~55°C ambient. Junction temperature must remain below 125°C for reliable operation; thermal shutdown activates at 150°C.
Is LM2575HVT-5.0/NOPB RoHS compliant and lead-free?
Yes, LM2575HVT-5.0/NOPB is RoHS compliant and lead-free, as indicated by the "/NOPB" suffix per Texas Instruments' part numbering convention. TI confirms this variant meets JEDEC J-STD-020 moisture sensitivity level 3 and complies with EU RoHS Directive 2011/65/EU and China RoHS. Full compliance documentation is available in TI's Quality & Reliability reports for the LM2575HV family.
LM2575HVT-5.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- TO-220-5
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 52kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-5
LM2575HVT-5.0/NOPB FAQ
1.How can I place an order for LM2575HVT-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2575HVT-5.0/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 LM2575HVT-5.0/NOPB reliable?
The price and inventory of LM2575HVT-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2575HVT-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM2575HVT-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2575HVT-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2575HVT-5.0/NOPB?
LM2575HVT-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2575HVT-5.0/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 LM2575HVT-5.0/NOPB?
For technical support, including LM2575HVT-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2575HVT-5.0/NOPB requirements.
6.How does Aetrix verify that LM2575HVT-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2575HVT-5.0/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 LM2575HVT-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM2575HVT-5.0/NOPB?
All LM2575HVT-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2575HVT-5.0/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 LM2575HVT-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM2575HVT-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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