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onsemi LM2575TV-005G
- Part No.:
- LM2575TV-005G
- Manufacturer:
- onsemi
- Package:
- TO-220-5 Formed Leads
- Datasheet:
-
LM2575TV-005G.pdf
- Description:
- IC REG BUCK 5V 1A TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,312
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Product details
Overview
LM2575TV-005G from onsemi is a monolithic step-down (buck) switching regulator IC delivering 5.0 V fixed output at up to 1.0 A, with ±4% output voltage tolerance over line and load, 4.75 V to 40 V input range, and 52 kHz fixed-frequency operation. It integrates a 1.0 A switch, thermal shutdown, cycle-by-cycle current limiting, and TTL-compatible ON/OFF control - used in industrial power supplies, battery chargers, and embedded DC-DC conversion.
For engineers reviewing the LM2575TV-005G datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed 1.0 A output current, no heatsink requirement under typical loads, 80 µA standby quiescent current, and compatibility with standard off-the-shelf inductors (e.g., 330 µH).
Technical Context
The LM2575TV-005G implements a voltage-mode controlled buck converter with an internal 52 kHz oscillator, 1.235 V bandgap reference, and error amplifier driving a 1.0 A NPN switch. Its feedback loop uses a fixed internal resistor divider for 5.0 V regulation, eliminating external programming components.
Protection features include cycle-by-cycle current limiting (typ. 2.3 A peak), thermal shutdown, and 18 kHz frequency foldback during overload. The ON/OFF pin enables logic-level shutdown with 1.4 V typical threshold and 80 µA standby current at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±4% over −40°C to +125°C, 0.2–1.0 A load, 8.0–40 V input - ensures stable rail for microcontrollers and analog circuitry without trimming. |
| Max Output Current | 1.0 A continuous - supports moderate-power loads like sensors, displays, or logic families without external boost stages. |
| Input Voltage Range | 4.75 V to 40 V - accommodates wide-input applications including automotive (cold-crank), industrial 24 V systems, and unregulated wall adapters. |
| Switching Frequency | 52 kHz fixed (±10% over temp) - enables use of low-cost, high-saturation-current inductors and simplifies EMI filtering vs. higher-frequency alternatives. |
| Efficiency | 77% typ. at 12 VIN/5 VOUT/1.0 A - reduces thermal load vs. linear regulators; often eliminates need for heatsink in ambient ≤50°C. |
| Standby Quiescent Current | 80 µA typ. at 25°C when ON/OFF pin = 5 V - enables low-power sleep modes in battery-backed or energy-conscious systems. |
| Saturation Voltage | 1.0 V typ. at 1.0 A - defines minimum dropout: requires ≥6.0 V input for regulated 5.0 V output under full load. |
Pinout & Package
LM2575TV-005G uses the TO-220-5 (Case 314B) package with heatsink surface electrically connected to Pin 3 (GND). The exposed tab provides low thermal resistance (RJC = 5.0°C/W) and must be mounted to a heatsink or copper pour for >0.5 A continuous operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Vin | Positive input supply | Accepts 4.75–40 V unregulated DC; requires local 100 µF/50 V input capacitor to handle high di/dt switching currents. |
| 2 - Output | Emitter of internal NPN switch | Drives inductor; saturation voltage ~1.0 V limits minimum input; PCB copper area must be minimized to reduce EMI coupling. |
| 3 - GND | Circuit ground reference | Common return for input cap, output cap, and feedback network; single-point grounding recommended per layout guidelines. |
| 4 - Feedback | Regulation sense node | Internally tied to fixed 5.0 V divider; not user-accessible - eliminates external resistor selection errors for fixed-output version. |
| 5 - ON/OFF | Logic-enable control input | TTL-compatible: <1.4 V = ON, >2.2 V = OFF; draws <30 µA in active state; enables system-level power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1.0 A switch | Eliminates external MOSFET and gate driver; reduces BOM count and layout complexity for compact buck designs. |
| Fixed 5.0 V output | No external feedback resistors required - improves accuracy, temperature stability, and long-term reliability vs. adjustable variants. |
| Thermal shutdown + current limit | Self-protecting under short-circuit, overload, or overheating - prevents device destruction without external circuitry. |
| 52 kHz oscillator | Enables use of low-cost, high-current toroidal or drum-core inductors (e.g., Renco RL1952, Pulse PE-52627) with minimal size penalty. |
| 80 µA standby current | Supports ultra-low-power wake-on-event architectures where main regulator is disabled between active cycles. |
Applications
| Industrial Power Supply | Battery Charger Front-End |
|---|---|
|
Use Scenario: Converting 24 VDC factory bus to stable 5 V for PLC I/O modules and sensor interfaces. IC Role / Device Role / Timing Role: Primary step-down regulator providing isolated, ripple-controlled 5 V rail with fault protection. Use Value: Delivers 1.0 A at 77% efficiency with no heatsink needed below 50°C ambient - reduces enclosure size and cooling cost. |
Use Scenario: Pre-regulating variable solar or adapter input (12–36 V) to fixed 5 V before linear LDO stage in USB-C battery charger. IC Role / Device Role / Timing Role: Efficient bulk converter reducing dissipation in downstream linear regulator. Use Value: 52 kHz switching allows use of low-ESR aluminum electrolytics (COUT = 330 µF/16 V), lowering total solution cost vs. ceramic-only designs. |
| On-Card DC-DC Conversion | Automotive Accessory Module |
|
Use Scenario: Generating local 5 V from 12 V vehicle battery on infotainment daughterboard with space constraints. IC Role / Device Role / Timing Role: Compact, self-contained buck regulator replacing discrete switcher designs. Use Value: TO-220-5 package with GND-connected tab enables direct mounting to metal chassis for passive cooling - avoids fan or heatpipe. |
Use Scenario: Powering CAN transceiver and microcontroller in parking sensor ECU exposed to −40°C to +125°C ambient. IC Role / Device Role / Timing Role: AEC-Q100-compliant (NCV prefix variant) primary regulator meeting automotive thermal and reliability requirements. Use Value: Guaranteed operation from −40°C to +125°C junction temperature with ±4% output accuracy - ensures robust digital logic timing across full automotive range. |
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-5.0 | Same electrical specs; TO-220-5 package but non-Pb-free, obsolete per onsemi discontinuation notice (p.24) | No AEC-Q100 qualification; not suitable for new automotive designs requiring PPAP or Pb-free compliance | Select LM2575TV-005G for RoHS-compliant, production-ready designs requiring long-term availability. |
| MP1584EN-LF-Z | 4.5–28 V input, 1.5 A output, 1.5 MHz switching - smaller inductors/caps but higher EMI sensitivity | Requires careful layout for EMI; lacks integrated thermal foldback; not qualified for automotive temperature range | Choose MP1584EN-LF-Z only if board space is critical and input voltage never exceeds 28 V; verify EMI compliance in final system. |
Compared with LM2575T-5.0, LM2575TV-005G offers Pb-free construction and documented lifecycle support; versus MP1584EN-LF-Z, it trades higher-frequency efficiency for inherent EMI robustness, wider input range (40 V), and guaranteed automotive-grade thermal performance - making it preferable for industrial and legacy-automotive applications.
Availability
LM2575TV-005G is available at Aetrix Electronics and suitable for industrial power supplies, battery charger front-ends, and on-card DC-DC conversion requiring stable component supply, long-lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for LM2575TV-005G 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 automotive ICs.
The LM2575 series was designed as a simple, robust, low-component-count buck regulator family for cost-sensitive industrial and automotive applications - prioritizing ease of design, thermal resilience, and long-term manufacturability over ultra-high efficiency or miniaturization.
FAQ
What is the maximum input voltage rating for LM2575TV-005G?
The absolute maximum input voltage for LM2575TV-005G is 45 V, but the recommended operating maximum is 40 V per the datasheet's Operating Ratings. Exceeding 40 V risks violating the guaranteed ±4% output accuracy and may trigger thermal shutdown under sustained load due to increased power dissipation in the internal switch.
Does LM2575TV-005G require an external feedback resistor network?
No. LM2575TV-005G is the fixed 5.0 V output variant with an internal resistor divider connected to the feedback pin (Pin 4); no external resistors are needed. This differs from the adjustable LM2575ADJ version, which requires R1 and R2 to set VOUT. Using LM2575TV-005G eliminates resistor tolerance and drift errors.
Can LM2575TV-005G operate without a heatsink?
Yes - at 1.0 A load and 12 V input, LM2575TV-005G dissipates ~0.7 W (VSAT × IOUT ≈ 1.0 V × 0.7 A). With its RJA = 65°C/W (TO-220), junction rise is ~46°C above ambient. In ≤50°C ambient, TJ stays below 125°C, so no heatsink is required for many applications.
What is the purpose of the ON/OFF pin (Pin 5) on LM2575TV-005G?
Pin 5 provides TTL-compatible enable/disable control: <1.4 V turns the regulator ON; >2.2 V places it in low-power standby with 80 µA quiescent current. This allows system-level power sequencing, battery-saving sleep modes, or fault-initiated shutdown - all without external transistors or level shifters.
Which inductor value is recommended for LM2575TV-005G in a typical 12 V to 5 V, 1.0 A application?
For 12 V input, 5 V output, and 1.0 A load, the datasheet (Figure 18) specifies 330 µH (inductor code L330). Recommended parts include Renco RL1952 or Pulse PE-52627 - both rated for ≥1.5 A DC and 52 kHz operation, ensuring stable continuous conduction mode and <1% output ripple with 330 µF output capacitance.
LM2575TV-005G 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
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.75V
- Voltage - Input (Max):
- 40V
- 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
LM2575TV-005G FAQ
1.How can I place an order for LM2575TV-005G through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2575TV-005G 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 LM2575TV-005G reliable?
The price and inventory of LM2575TV-005G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2575TV-005G is usually 5 days.
3.What payment methods are accepted for LM2575TV-005G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2575TV-005G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2575TV-005G?
LM2575TV-005G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2575TV-005G 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 LM2575TV-005G?
For technical support, including LM2575TV-005G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2575TV-005G requirements.
6.How does Aetrix verify that LM2575TV-005G is sourced from the original manufacturer or authorized distributors?
All LM2575TV-005G 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 LM2575TV-005G meets industry standards.
7.What is the process for return or replacement of LM2575TV-005G?
All LM2575TV-005G units undergo pre-shipment inspection (PSI). If there is an issue with LM2575TV-005G, 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 LM2575TV-005G part is unused and in its original packaging.
Return procedure for LM2575TV-005G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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