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Texas Instruments LM2575HVT-15/NOPB
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- Part No.:
- LM2575HVT-15/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- TO-220-5
- Datasheet:
-
LM2575HVT-15/NOPB.pdf
- Description:
- IC REG BUCK 15V 1A TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,018
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Product details
Overview
LM2575HVT-15/NOPB from Texas Instruments is a monolithic 1A step-down (buck) switching voltage regulator with fixed 15V output, 60V maximum input voltage rating, 52 kHz fixed-frequency internal oscillator, and thermal shutdown/current limit protection. It drives 1A loads with ±4% output voltage tolerance over line and load conditions and replaces linear regulators in industrial power supplies requiring high efficiency and minimal external components.
For engineers reviewing the LM2575HVT-15/NOPB datasheet, LM2575HVT-15/NOPB pinout, LM2575HVT-15/NOPB application, or LM2575HVT-15/NOPB equivalent, this device is selected for high-input-voltage DC-DC conversion where input up to 60V, output stability at 15V/1A, thermal robustness in TO-220 packages, and compatibility with standard off-the-shelf inductors are critical design requirements.
Technical Context
The LM2575HVT-15/NOPB integrates a PWM controller, power switch, oscillator, error amplifier, and current-limit circuit in a single TO-220 package. Its fixed-frequency 52 kHz operation enables predictable EMI filtering and stable loop compensation using only four external components: input capacitor, output capacitor, catch diode, and inductor.
It employs cycle-by-cycle current limiting and thermal shutdown for fault protection, with TTL-compatible ON/OFF control enabling low-power standby mode (50 μA typical quiescent current). The 15V output is internally trimmed and does not require external feedback resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 15 V ±4% over 18–60 V input and 0.2–1 A load - ensures stable rail for analog front-ends or motor drivers without trimming. |
| Input Voltage Range | 4.75 V to 60 V - supports wide-range industrial inputs including 48 V telecom, 36 V battery systems, and unregulated rectified AC. |
| Output Current | 1 A continuous - sufficient for powering microcontrollers, sensors, and interface ICs without external pass devices. |
| Switching Frequency | 52 kHz fixed - simplifies EMI filter design and allows use of low-cost, high-saturation-current inductors (e.g., PE-52627). |
| Efficiency | 88% at VIN = 18 V, IOUT = 1 A - reduces thermal load vs. linear regulators; eliminates need for heatsink under typical conditions. |
| Thermal Resistance | θJA = 65 °C/W (TO-220, no heatsink); θJC = 2 °C/W - enables direct PCB mounting with minimal copper area for thermal relief. |
| Standby Current | 50 μA typical (ON/OFF pin high) - supports low-power sleep modes in battery-backed or energy-conscious systems. |
Pinout & Package
LM2575HVT-15/NOPB uses a 5-lead TO-220 package (Package Number NDH0005D), with the tab electrically connected to Pin 2 (Output) and thermally coupled to the die. Mounting requires isolation if output is not ground-referenced.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Input | VIN supply connection | Accepts 4.75–60 V; requires local 100 μF/75 V aluminum electrolytic bypass capacitor. |
| 2 - Output | Regulated 15 V switching node | Drives inductor and output capacitor; tab is internally connected to this pin for thermal conduction. |
| 3 - Ground | Power and signal reference | Single-point ground connection required; must tie to input and output capacitor negatives and diode cathode. |
| 4 - Feedback | Internal voltage reference sense | Internally tied to 15 V output; no external resistor network needed for fixed-output version. |
| 5 - ON/OFF | TTL-compatible enable control | Logic high (>2.2 V) enables regulation; logic low (<0.8 V) disables output and reduces IQ to 50 μA. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1A power switch | Eliminates external MOSFET and gate driver; supports full 1A load with <1.4 V saturation voltage at peak current. |
| Fixed 15 V output trim | ±4% accuracy over temperature and line/load - removes need for calibration or trimming in production. |
| 52 kHz oscillator + internal compensation | Enables stable operation with only 4 external parts - no loop compensation design or external timing capacitor required. |
| TTL shutdown with 50 μA standby | Allows system-level power sequencing and battery-saving sleep states without auxiliary circuitry. |
| Thermal shutdown + cycle-by-cycle current limit | Protects against sustained overload or short-circuit without external sensing; self-resets on cooling or current reduction. |
Applications
| Industrial Power Supplies | Automotive Aftermarket Electronics |
|---|---|
|
Use Scenario: Converting 24–48 V vehicle battery or industrial bus to stable 15 V for analog instrumentation or actuator drivers. IC Role / Device Role / Timing Role: Primary buck regulator providing isolated, regulated 15 V rail with high input voltage tolerance and thermal resilience. Use Value: Replaces inefficient linear pre-regulators; maintains regulation during cold-crank (down to 6 V) and load-dump transients (up to 60 V). |
Use Scenario: Powering CAN transceivers, display controllers, or GPS modules in dashcams or telematics units. IC Role / Device Role / Timing Role: Fixed-output DC-DC converter delivering clean 15 V from noisy automotive battery with built-in transient protection. Use Value: Delivers 1 A at 88% efficiency with integrated current limiting - avoids fuse blowing during ESD or surge events. |
| Programmable Logic Controllers (PLCs) | Test & Measurement Equipment |
|
Use Scenario: Generating 15 V bias for op-amps, ADC references, or isolated I/O modules in modular PLC backplanes. IC Role / Device Role / Timing Role: On-card switching regulator replacing bulky transformer-based supplies in space-constrained DIN-rail enclosures. Use Value: Operates reliably across −40°C to +125°C junction range; withstands 60 V input surges common in industrial 24 V systems. |
Use Scenario: Supplying precision 15 V rails for analog front-ends in portable multimeters or oscilloscope probes. IC Role / Device Role / Timing Role: High-efficiency pre-regulator feeding low-noise LDOs to minimize thermal drift and ripple. Use Value: Reduces heat generation vs. linear solutions - critical for handheld form factors with limited airflow and thermal mass. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2575T-15 | Standard-voltage version (max VIN = 40 V); identical pinout, 15 V output, and TO-220 package. | Not suitable for >40 V input systems (e.g., 48 V telecom, industrial 36 V+ buses). | Select LM2575HVT-15/NOPB when input may exceed 40 V; otherwise LM2575T-15 offers cost parity for ≤40 V designs. |
| LM2596T-15 | Higher 3 A output current, 150 kHz switching frequency, and improved efficiency (≥92% at 1 A), but requires different inductor and layout. | Supports higher power density and lower output ripple, but needs revised compensation and EMI filtering. | Choose LM2596T-15 for new designs needing >1 A or better efficiency; retain LM2575HVT-15/NOPB for legacy compatibility and proven reliability in 1 A, 52 kHz systems. |
Compared with LM2575T-15, LM2575HVT-15/NOPB adds 20 V input headroom critical for surge-prone environments; versus LM2596T-15, it trades higher current and frequency for simpler magnetics, lower EMI, and drop-in replacement in existing LM2575 layouts.
Availability
LM2575HVT-15/NOPB is available at Aetrix Electronics and suitable for industrial power supplies, automotive electronics, programmable logic controllers, and test equipment requiring stable component supply with long-term manufacturability and consistent parametric performance.
Supply support for LM2575HVT-15/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 ICs, with decades of expertise in high-reliability power conversion solutions.
The LM2575HVT series belongs to TI's SIMPLE SWITCHER® portfolio, designed specifically for engineers seeking easy-to-use, robust, and cost-effective buck regulators that minimize external component count while maintaining performance across harsh industrial and automotive environments.
FAQ
What is the maximum input voltage rating for LM2575HVT-15/NOPB?
The LM2575HVT-15/NOPB supports a maximum input voltage of 60 V, verified per Absolute Maximum Ratings in the official TI datasheet SNVS106E. This HV rating distinguishes it from the standard LM2575T-15 (40 V max), making LM2575HVT-15/NOPB suitable for 48 V systems, industrial 36 V+ rails, and transient-tolerant applications where input surges exceed 40 V.
Does LM2575HVT-15/NOPB require external feedback resistors?
No, LM2575HVT-15/NOPB does not require external feedback resistors. As a fixed-output variant, its 15 V regulation is achieved via internal resistor divider and trimmed reference; Pin 4 (Feedback) is internally connected to the output and must remain unconnected in standard operation.
What package type and thermal characteristics apply to LM2575HVT-15/NOPB?
LM2575HVT-15/NOPB uses a 5-lead TO-220 package (NDH0005D) with the metal tab electrically tied to Pin 2 (Output). Its thermal resistance is θJA = 65 °C/W (no heatsink, minimal copper) and θJC = 2 °C/W, enabling direct PCB mounting and efficient heat transfer through the tab when soldered to adequate copper area.
Can LM2575HVT-15/NOPB be used in battery-powered applications with low standby power?
Yes, LM2575HVT-15/NOPB supports low-power standby via its TTL-compatible ON/OFF pin (Pin 5): applying logic low disables regulation and reduces quiescent current to 50 μA typical, making it suitable for battery-backed systems requiring extended sleep duration without significant drain.
What are the key external components required for LM2575HVT-15/NOPB operation?
LM2575HVT-15/NOPB requires exactly four external components: an input capacitor (100 μF, 75 V aluminum electrolytic), output capacitor (330 μF, 25 V), catch diode (Schottky, e.g., SR103 or MBR340), and inductor (330 μH, rated ≥1.15 A, e.g., PE-52627). No compensation network or feedback resistors are needed.
LM2575HVT-15/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):
- 15V
- 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-15/NOPB FAQ
1.How can I place an order for LM2575HVT-15/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2575HVT-15/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-15/NOPB reliable?
The price and inventory of LM2575HVT-15/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-15/NOPB is usually 5 days.
3.What payment methods are accepted for LM2575HVT-15/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2575HVT-15/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2575HVT-15/NOPB?
LM2575HVT-15/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2575HVT-15/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-15/NOPB?
For technical support, including LM2575HVT-15/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2575HVT-15/NOPB requirements.
6.How does Aetrix verify that LM2575HVT-15/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2575HVT-15/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-15/NOPB meets industry standards.
7.What is the process for return or replacement of LM2575HVT-15/NOPB?
All LM2575HVT-15/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2575HVT-15/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-15/NOPB part is unused and in its original packaging.
Return procedure for LM2575HVT-15/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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