My Inquiry
My Account
onsemi LM2576TV-005
- Part No.:
- LM2576TV-005
- Manufacturer:
- onsemi
- Package:
- -
- Datasheet:
-
LM2576TV-005.pdf
- Description:
- IC REG SW 3A 5V STEPDOWN TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,819
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2576TV-005 from onsemi is a monolithic 3.0 A, 5.0 V fixed-output step-down (buck) switching regulator in TO-220 package. It operates from 7.0 V to 40 V input, delivers ±4% output voltage accuracy over line/load/temperature, features 52 kHz internal oscillator, cycle-by-cycle current limiting, thermal shutdown, and TTL-compatible ON/OFF control - used in industrial power supplies and embedded DC-DC conversion.
For engineers reviewing the LM2576TV-005 datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed 3.0 A output current, fixed 5.0 V output with ±4% tolerance, TO-220 thermal performance (RJC = 5.0 °C/W), 80 µA standby current, and compatibility with standard off-the-shelf inductors (e.g., 100 µH Pulse PE-92108).
Technical Context
The LM2576TV-005 integrates a 3.0 A NPN switch, 1.235 V bandgap reference, error amplifier, 52 kHz oscillator, and thermal/current protection circuitry. Its fixed-output architecture eliminates external feedback resistors, simplifying design while maintaining regulation across −40 °C to +125 °C junction temperature.
It implements voltage-mode PWM control with fixed frequency operation and automatic frequency foldback (to ~18 kHz) during overload or short-circuit events - reducing average power dissipation without external components. The internal switch saturation voltage is 1.5 V (typ) at 3.0 A, enabling high efficiency (>77% at 12 VIN/3.0 A) without heatsink under moderate loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±4% over full line/load/temperature range - ensures stable logic supply without trimming. |
| Max Output Current | 3.0 A continuous - supports single-rail microcontroller, FPGA I/O, or sensor subsystems without external current boosting. |
| Input Voltage Range | 7.0 V to 40 V - accommodates 12 V/24 V industrial buses and battery-derived inputs with margin. |
| Oscillator Frequency | 52 kHz ±10% (±2% from 0 °C to 125 °C) - enables use of low-cost, high-saturation-current inductors with minimal EMI filtering. |
| Standby Quiescent Current | 80 µA typical at 25 °C - allows low-power shutdown mode for battery-backed systems. |
| Thermal Resistance (Junction-to-Case) | 5.0 °C/W - supports direct heatsink mounting via Pin 3 (GND/Heatsink tab) for >2 W dissipation without PCB copper pour. |
| Protection Features | Cycle-by-cycle current limiting + thermal shutdown - prevents damage during output shorts or overloads without external sensing. |
Pinout & Package
LM2576TV-005 uses TO-220 package (Case 314B), with heatsink surface electrically connected to Pin 3 (GND). The 5-pin configuration supports direct mounting to metal chassis or heatsinks for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Vin | Positive input supply | Accepts 7–40 V unregulated DC; requires local 100 µF low-ESR capacitor to suppress switching transients. |
| 2 - Output | Emiter of internal NPN switch | Delivers regulated 5.0 V; PCB copper area must be minimized to reduce EMI coupling into sensitive analog circuits. |
| 3 - GND | Circuit ground / Heatsink connection | Common return path and thermal interface; must be connected to large copper plane or external heatsink for thermal performance. |
| 4 - Feedback | Regulation sense input | Internally tied to 5.0 V output divider; not accessible in fixed-version - no external resistor network required. |
| 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 5.0 V output | Eliminates external feedback resistors - reduces BOM count and layout sensitivity vs. adjustable versions. |
| 3.0 A guaranteed output | Supports high-current digital loads (e.g., ARM Cortex-M7 SoCs, multi-channel ADCs) without derating or parallel devices. |
| 52 kHz fixed-frequency operation | Enables predictable EMI spectrum and compatibility with low-cost, high-current inductors (e.g., Pulse PE-92108, 100 µH). |
| TTL shutdown capability | Allows system-level power sequencing and sleep-mode control using standard logic signals - no level-shifting needed. |
| Integrated thermal/current protection | Self-protecting under fault conditions - no external circuitry required for safe operation in harsh environments. |
Applications
| Industrial PLC Power Supply | Embedded Microcontroller Board |
|---|---|
|
Use Scenario: Providing clean 5.0 V rail for CPU, memory, and I/O in DIN-rail mounted programmable logic controllers operating from 24 V DC bus. IC Role / Device Role / Timing Role: Primary buck converter delivering regulated 5.0 V at up to 3.0 A, replacing linear regulators to avoid thermal throttling. Use Value: Enables compact, fanless enclosure design with >77% efficiency at full load - reducing heat sink size by >60% vs. LM7805-based solution. |
Use Scenario: Powering ARM-based evaluation boards with USB peripherals, Ethernet PHY, and SD card interface from 12 V wall adapter. IC Role / Device Role / Timing Role: Main 5.0 V system rail generator with ON/OFF control synchronized to host processor sleep states. Use Value: 80 µA standby current extends battery backup runtime; fixed output eliminates calibration drift in field-deployed units. |
| Automotive Body Control Module | Test Equipment Power Subsystem |
|
Use Scenario: Generating 5.0 V for CAN transceivers and microcontrollers in 12 V vehicle electrical systems with load dump transients. IC Role / Device Role / Timing Role: Input-stage buck regulator preceding LDOs, handling wide input range (7–40 V) including cold-crank and load-dump conditions. Use Value: Withstands 45 V absolute max input and −40 °C to +125 °C operation - meets AEC-Q100 stress requirements without derating. |
Use Scenario: Stable 5.0 V source for precision analog front-ends in portable multimeters and signal generators powered from Li-ion packs. IC Role / Device Role / Timing Role: High-PSRR, low-noise DC-DC stage feeding low-dropout regulators for ADC reference and op-amp rails. Use Value: Fixed 5.0 V output with ±4% tolerance ensures consistent measurement accuracy across temperature and input voltage variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2576T-5.0 | Same electrical specs, but TO-220 Case 314D (no heatsink tab connection to Pin 3); RJA = 65 °C/W vs. 65 °C/W for TV suffix. | Limited thermal performance in high-ambient or sealed enclosures due to lack of direct heatsink interface. | Select LM2576TV-005 when direct heatsink mounting or >2 W continuous dissipation is required. |
| MP1584EN-LF-Z | 3 A synchronous buck, 2 MHz switching, smaller SOIC-8 package; no integrated catch diode required. | Higher efficiency at light loads and smaller footprint, but requires careful layout for EMI and lacks built-in thermal shutdown latch. | Choose MP1584EN-LF-Z for space-constrained designs needing >90% efficiency above 500 mA; retain LM2576TV-005 for ruggedness and ease of thermal management. |
Compared with LM2576T-5.0, LM2576TV-005 offers superior thermal path via Pin 3 heatsink connection, while MP1584EN-LF-Z trades robustness and simplicity for higher frequency and synchronous rectification - making LM2576TV-005 optimal for industrial environments where reliability and thermal margin outweigh size constraints.
Availability
LM2576TV-005 is available at Aetrix Electronics and suitable for industrial PLCs, embedded microcontroller boards, automotive body control modules, and test equipment requiring stable component supply with long lifecycle support.
Supply support for LM2576TV-005 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 power management, analog, and sensor solutions for automotive, industrial, and cloud infrastructure markets.
The LM2576 series was designed as a rugged, easy-to-use buck regulator family for cost-sensitive industrial and embedded applications - prioritizing thermal resilience, minimal external components, and wide-input-voltage operation over ultra-high efficiency or miniaturization.
FAQ
What is the maximum input voltage rating for LM2576TV-005?
The LM2576TV-005 has an absolute maximum input voltage of 45 V, with recommended operating range of 7.0 V to 40 V. Exceeding 45 V risks permanent damage. For automotive applications with load dump transients, external clamping (e.g., TVS diode) is advised even though the device withstands brief 45 V peaks per datasheet limits.
Does LM2576TV-005 require an external catch diode?
Yes, LM2576TV-005 requires an external Schottky catch diode (e.g., MBR360 or 1N5822) connected between Pin 2 (Output) and Pin 3 (GND). The internal switch is NPN-based and non-synchronous; omitting the diode causes catastrophic failure during switch-off transitions due to inductive kickback.
Can LM2576TV-005 be used in adjustable-output configurations?
No - LM2576TV-005 is a fixed 5.0 V output variant. Its feedback node (Pin 4) is internally connected to the output divider and not accessible. To achieve adjustable output, use LM2576ADJ with external R1/R2 resistors; the TV-005 cannot be reconfigured without hardware modification.
What thermal performance can be expected from LM2576TV-005 in TO-220 package?
With Pin 3 (GND/heatsink tab) mounted to a 10 cm² aluminum heatsink, LM2576TV-005 sustains 3.0 A output at 12 VIN with junction temperature <100 °C at 25 °C ambient. Its RJC = 5.0 °C/W enables >2.5 W continuous dissipation before thermal shutdown activates - significantly exceeding LM2576T-5.0's capability.
Is LM2576TV-005 RoHS and REACH compliant?
Yes, LM2576TV-005 is offered in Pb-free (RoHS-compliant) packaging per onsemi's product change notices. The TO-220 package carries Moisture Sensitivity Level (MSL) 1 - unlimited floor life at ≤30 °C/85% RH - eliminating bake requirements prior to assembly.
LM2576TV-005 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
LM2576TV-005 FAQ
1.How can I place an order for LM2576TV-005 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2576TV-005 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-005 reliable?
The price and inventory of LM2576TV-005 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2576TV-005 is usually 5 days.
3.What payment methods are accepted for LM2576TV-005?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2576TV-005 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2576TV-005?
LM2576TV-005 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2576TV-005 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-005?
For technical support, including LM2576TV-005 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2576TV-005 requirements.
6.How does Aetrix verify that LM2576TV-005 is sourced from the original manufacturer or authorized distributors?
All LM2576TV-005 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-005 meets industry standards.
7.What is the process for return or replacement of LM2576TV-005?
All LM2576TV-005 units undergo pre-shipment inspection (PSI). If there is an issue with LM2576TV-005, 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-005 part is unused and in its original packaging.
Return procedure for LM2576TV-005:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2576TV-005 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
