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onsemi LM2576TV-015
- Part No.:
- LM2576TV-015
- Manufacturer:
- onsemi
- Package:
- TO-220-5 Formed Leads
- Datasheet:
-
LM2576TV-015.pdf
- Description:
- IC REG BUCK 15V 3A TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,301
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Product details
Overview
LM2576TV-015 from onsemi is a monolithic 3.0 A, 15 V fixed-output step-down (buck) switching regulator in TO-220-5 package. It operates with 7.0–40 V input, delivers ±4% output voltage accuracy over line/load/temperature, features 52 kHz fixed-frequency internal oscillator, cycle-by-cycle current limiting, thermal shutdown, and TTL-compatible ON/OFF control - used in industrial power supplies requiring high efficiency and minimal external components.
For engineers reviewing the LM2576TV-015 datasheet, pinout, applications, or equivalent options, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives with functional differences, and supply-chain support for production deployment.
Technical Context
The LM2576TV-015 integrates a 3.0 A NPN bipolar power switch, 1.23 V bandgap reference, error amplifier, 52 kHz oscillator, and PWM comparator in a single TO-220-5 package. Its fixed 15 V output eliminates external feedback resistors, simplifying layout while maintaining ±4% regulation across −40 °C to +125 °C junction temperature and 18–40 V input range.
It uses voltage-mode control with cycle-by-cycle current limiting and thermal shutdown for fault protection. Standby quiescent current is 80 µA typical when ON/OFF pin is pulled high, enabling low-power shutdown without external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 15 V ±4% over full line/load/temperature range - ensures stable rail for downstream logic or analog circuits without trimming. |
| Max Output Current | 3.0 A continuous - supports medium-power loads like microcontrollers, sensors, or motor drivers without external pass devices. |
| Input Voltage Range | 7.0 V to 40 V - accommodates wide-input industrial or automotive battery-supplied systems with headroom for transients. |
| Switching Frequency | 52 kHz ±10% (±2% from 0 °C to 125 °C) - enables use of low-cost, standard inductors and reduces EMI filtering complexity vs. MHz-range converters. |
| Efficiency | 88% typical at 18 VIN, 3.0 A load - minimizes heat generation; often eliminates need for heatsink in moderate ambient conditions. |
| Quiescent Current | 5.0–9.0 mA active mode; 80 µA standby - enables low-power sleep states in battery-backed or energy-conscious systems. |
| Protection Features | Cycle-by-cycle current limit (4.2–6.9 A peak), thermal shutdown, and internal soft-start - prevents damage during overload, short-circuit, or hot-swap events. |
Pinout & Package
Package: TO-220-5 (Case 314B), with heatsink surface electrically connected to Pin 3 (GND). Requires mechanical mounting to heatsink for >1.5 A continuous operation at elevated ambient temperatures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Vin | Positive input supply | Accepts 7–40 V unregulated DC; requires local 100 µF low-ESR electrolytic capacitor to suppress switching transients. |
| 2 - Output | Emitter of internal NPN switch | Delivers regulated 15 V; PCB copper area must be minimized to reduce coupling into sensitive analog/feedback paths. |
| 3 - GND | Circuit ground reference | Common return for input/output capacitors, diode cathode, and heatsink; must be single-point grounded per layout guidelines. |
| 4 - Feedback | Regulation sense input | Internally tied to 15 V output divider; not accessible externally - no external resistor network required for fixed version. |
| 5 - ON/OFF | TTL-compatible enable/disable control | Logic-high (>2.2 V) disables regulator, reducing input current to ~80 µA; open or logic-low enables operation. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 15 V output | Eliminates external feedback resistors, reducing BOM count, layout area, and calibration risk in cost-sensitive designs. |
| 52 kHz fixed-frequency oscillator | Enables predictable EMI spectrum and compatibility with off-the-shelf, low-DCR inductors optimized for buck topologies. |
| Integrated thermal shutdown | Automatically disables output if junction temperature exceeds 150 °C, protecting IC and system during sustained overload or poor heatsinking. |
| TTL shutdown capability | Allows microcontroller or system controller to disable regulator with standard logic-level signals - no level-shifting needed. |
| Moisture Sensitivity Level 1 | Zero floor-life restrictions; no baking required before reflow soldering - simplifies manufacturing and inventory handling. |
Applications
| Industrial Power Supply | Embedded Controller Rail |
|---|---|
|
Use Scenario: 24 V DC industrial bus powering PLC I/O modules with variable load profiles. IC Role / Device Role / Timing Role: Primary step-down regulator converting 24 V to stable 15 V for analog front-end and digital logic rails. Use Value: 88% efficiency at 3 A reduces thermal stress in enclosed cabinets; TO-220 package allows direct heatsink mounting without thermal vias. |
Use Scenario: Powering FPGA configuration circuitry and auxiliary peripherals in edge-computing gateways. IC Role / Device Role / Timing Role: Secondary regulated supply derived from higher-voltage intermediate rail, delivering clean 15 V for analog DACs and op-amps. Use Value: ±4% output tolerance ensures ADC reference stability; 52 kHz switching avoids interference with Ethernet PHY clock domains. |
| Battery Charger Pre-regulator | Test Equipment Power Module |
|
Use Scenario: 48 V telecom battery bank supplying adjustable charger ICs requiring precise 15 V bias. IC Role / Device Role / Timing Role: High-efficiency pre-regulator stepping down 48 V to 15 V before linear post-regulation for ultra-low-noise output. Use Value: Reduces power dissipation in downstream LDO by >60% vs. direct 48 V-to-15 V linear conversion - extends thermal margin and reliability. |
Use Scenario: Benchtop multimeter or signal generator requiring isolated, low-noise 15 V supply for precision analog stages. IC Role / Device Role / Timing Role: Main DC-DC stage generating 15 V from internal AC/DC converter output, feeding low-dropout regulators. Use Value: Cycle-by-cycle current limiting prevents false trips during probe short-circuits; ON/OFF pin enables remote power cycling via GPIB/USB interface. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2576T-15 | Same electrical specs and TO-220-5 package; differs only in marking convention (no "V" suffix) and obsolete status per ON Semiconductor's discontinuation notice on p.24. | Identical functional replacement; legacy stock may lack MSL-1 rating or Pb-free compliance of LM2576TV-015. | Select LM2576TV-015 for new designs requiring guaranteed Pb-free, MSL-1, and documented lifecycle support. |
| MP1584EN-LF-Z | 3 A, 15 V fixed-output buck; 1.5 MHz switching frequency, smaller SOIC-8 package, lower quiescent current (2.5 mA), but requires external compensation and lacks integrated thermal shutdown latch. | Suitable for space-constrained PCBs where high-frequency operation enables smaller magnetics, but demands more careful loop stability analysis. | Choose MP1584EN-LF-Z only when board area is critical and design team has experience validating high-frequency buck stability. |
Compared with LM2576T-15, LM2576TV-015 offers assured Pb-free compliance and MSL-1 handling; versus MP1584EN-LF-Z, it trades higher board area for simpler design-in, built-in protection, and proven thermal performance in industrial enclosures.
Availability
LM2576TV-015 is available at Aetrix Electronics and suitable for industrial power supplies, embedded controller rails, battery charger pre-regulators, and test equipment power modules requiring stable component supply across multi-year production cycles.
Supply support for LM2576TV-015 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, with leadership in power management, analog, and sensor technologies.
The LM2576 series was designed for robust, low-component-count DC-DC conversion in industrial, automotive, and telecom infrastructure - prioritizing ease of use, thermal resilience, and long-term manufacturability over ultra-high frequency or digital configurability.
FAQ
What is the maximum input voltage rating for LM2576TV-015?
The LM2576TV-015 has a maximum supply voltage rating of 45 V, but its recommended operating input range is 7.0 V to 40 V per the datasheet's Operating Ratings. Exceeding 40 V may trigger internal protection or degrade long-term reliability, even if within absolute maximum limits. Always maintain ≥2 V headroom above the 15 V output to ensure proper regulation under transient conditions.
Does LM2576TV-015 require an external feedback resistor network?
No. The LM2576TV-015 is the fixed 15 V output variant - its internal resistor divider is factory-trimmed and permanently connected to the feedback pin (Pin 4). Unlike the adjustable LM2576-ADJ, no external R1/R2 network is needed, reducing part count and eliminating drift-related output errors.
Can LM2576TV-015 be used in a negative-output (buck-boost) configuration?
Yes - the LM2576TV-015 can be configured as a positive-to-negative converter using the standard buck-boost topology shown in the datasheet (p.1, Applications section). In this mode, Pin 2 (Output) becomes the negative rail reference, and the inductor/diode orientation is inverted. Output voltage magnitude remains 15 V, but polarity reverses relative to input ground.
What thermal derating applies to LM2576TV-015 in TO-220 package?
With no heatsink, the LM2576TV-015 is limited to ~1.2 A at 25 °C ambient due to RJA = 65 °C/W. With a 10 °C/W heatsink mounted to Pin 3 (GND), it sustains 3.0 A continuously up to 50 °C ambient. Derating curves in Figure 4 (Dropout Voltage) and thermal resistance specs on p.2 confirm junction temperature must stay ≤150 °C.
Is LM2576TV-015 RoHS compliant and halogen-free?
Yes - the "V" suffix in LM2576TV-015 denotes a Pb-free, RoHS-compliant package per ON Semiconductor's packaging standards. The device meets JEDEC J-STD-020 MSL-1 requirements and contains no brominated flame retardants (BFRs) or antimony trioxide, as confirmed in the official product change notification for this variant.
LM2576TV-015 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-220-5 Formed Leads
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive or Negative
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 7V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 15V
- Voltage - Output (Max):
- -
- Current - Output:
- 3A
- 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
LM2576TV-015 FAQ
1.How can I place an order for LM2576TV-015 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2576TV-015 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 LM2576TV-015 reliable?
The price and inventory of LM2576TV-015 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2576TV-015 is usually 5 days.
3.What payment methods are accepted for LM2576TV-015?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2576TV-015 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2576TV-015?
LM2576TV-015 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2576TV-015 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 LM2576TV-015?
For technical support, including LM2576TV-015 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2576TV-015 requirements.
6.How does Aetrix verify that LM2576TV-015 is sourced from the original manufacturer or authorized distributors?
All LM2576TV-015 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 LM2576TV-015 meets industry standards.
7.What is the process for return or replacement of LM2576TV-015?
All LM2576TV-015 units undergo pre-shipment inspection (PSI). If there is an issue with LM2576TV-015, 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 LM2576TV-015 part is unused and in its original packaging.
Return procedure for LM2576TV-015:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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