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Texas Instruments LM2575HVMX-5.0
- Part No.:
- LM2575HVMX-5.0
- Manufacturer:
- Texas Instruments
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
LM2575HVMX-5.0.pdf
- Description:
- IC REG BUCK 5V 1A 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,405
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Product details
Overview
LM2575HVMX-5.0 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, and integrated thermal shutdown and cycle-by-cycle current limiting. It delivers stable 5V power for industrial power supplies requiring high input voltage tolerance and minimal external components.
For engineers reviewing the LM2575HVMX-5.0 datasheet, LM2575HVMX-5.0 pinout, LM2575HVMX-5.0 application, or LM2575HVMX-5.0 equivalent, key selection criteria include its 60V input capability, TO-263 (DDPAK) package thermal performance, ±4% output voltage accuracy over line/load/temperature, and compatibility with standard off-the-shelf inductors and Schottky catch diodes.
Technical Context
The LM2575HVMX-5.0 implements a fixed-frequency pulse-width modulation (PWM) buck topology with internal 52 kHz oscillator and integrated N-channel DMOS power switch. Its control loop uses voltage-mode feedback referenced to a 1.23V internal bandgap, enabling stable regulation without external compensation.
It features TTL-compatible ON/OFF control (50 μA standby current), cycle-by-cycle peak current limiting (1.7–3.2 A), and thermal shutdown activation at 150°C junction temperature. The device operates across −40°C to +125°C junction temperature range and supports continuous 1A output current under specified thermal conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±4% over 8–60V input, 0.2–1A load, −40°C to +125°C - ensures stable logic supply rail under wide industrial input variation. |
| Input Voltage Range | 4.75V to 60V - supports 48V telecom, 36V automotive, and unregulated industrial DC inputs without pre-regulation. |
| Output Current | 1A continuous - drives microcontrollers, sensors, and peripheral ICs directly without external pass devices. |
| Switching Frequency | 52 kHz (±10%) - enables use of low-cost, high-saturation-current toroidal inductors and reduces EMI filtering complexity. |
| Efficiency | 77% at 12VIN/5VOUT/1A - minimizes thermal load vs. linear regulators, reducing or eliminating need for heatsinks. |
| Thermal Resistance | θJA = 37°C/W (DDPAK on 1 in² copper) - enables 1A operation at ambient up to +85°C without forced air. |
| Standby Current | 50 μA typical - supports low-power sleep modes in battery-backed or energy-conscious systems. |
Pinout & Package
LM2575HVMX-5.0 is housed in a 5-lead DDPAK/TO-263 surface-mount package (package code KTT0005B), featuring an exposed thermal pad for enhanced PCB heat dissipation. Mounting requires soldering the thermal pad to ≥1 in² of copper area to achieve θJA = 37°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Input | Unregulated DC input supply | Accepts 4.75–60V; requires local 47–100 μF aluminum electrolytic bypass capacitor. |
| 2 - Output | Regulated 5.0V switching node | Drives external catch diode anode and output inductor; high di/dt node requiring short PCB traces. |
| 3 - Ground | Power and signal reference | Must connect to thermal pad and system ground plane with low-inductance path; single-point grounding recommended. |
| 4 - Feedback | Voltage sense input (not used in fixed-output version) | Internally connected to 5.0V divider; left unconnected - no external resistor network required. |
| 5 - ON/OFF | TTL-compatible enable/disable 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 |
|---|---|
| High-voltage input capability | 60V absolute maximum input enables direct connection to 48V industrial buses and battery systems without pre-regulators. |
| Integrated protection | Thermal shutdown and cycle-by-cycle current limiting prevent damage during overload, short-circuit, or elevated ambient conditions. |
| Minimal external components | Only four external parts required: input capacitor, output capacitor, inductor, and Schottky catch diode - accelerates design and reduces BOM cost. |
| Standard inductor compatibility | Optimized for widely available 330 μH inductors (e.g., Pulse PE-52627), eliminating custom magnetics and simplifying sourcing. |
| TTL shutdown interface | 50 μA standby current and logic-level control allow seamless integration into microcontroller-managed power sequencing. |
Applications
| Industrial Power Supplies | Automotive Control Units |
|---|---|
|
Use Scenario: Converting 24V or 48V vehicle battery or plant bus to clean 5V for ECUs, CAN transceivers, and sensor interfaces. IC Role / Device Role / Timing Role: Primary buck regulator providing isolated, regulated 5V rail with high input transient tolerance. Use Value: Eliminates need for discrete MOSFET driver + controller; withstands load dump (up to 60V) without derating or protection circuitry. |
Use Scenario: On-board power conversion in engine control modules, body controllers, and ADAS subsystems operating from 12V/24V batteries. IC Role / Device Role / Timing Role: Fixed-output DC-DC converter delivering robust 5V supply with built-in thermal and overcurrent protection. Use Value: Supports AEC-Q100-relevant reliability via P+ product enhancement testing and 125°C junction operation. |
| Telecom Remote Units | Programmable Logic Controllers |
|
Use Scenario: Powering FPGA I/O banks, Ethernet PHYs, and management microcontrollers in outdoor base station radios and remote radio heads. IC Role / Device Role / Timing Role: High-input-voltage buck regulator supplying 5V logic rail with low standby current during sleep modes. Use Value: 60V input rating accommodates -48V telecom rectified bus with margin; 50 μA shutdown current extends backup battery life. |
Use Scenario: Distributed power architecture in modular PLC backplanes where each I/O module requires independent 5V regulation. IC Role / Device Role / Timing Role: Compact, thermally efficient 1A buck converter mounted directly on I/O carrier boards. Use Value: TO-263 package with 37°C/W θJA enables convection-cooled 1A operation in dense, sealed enclosures. |
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 | TO-220 package, 40V max input, higher θJA (65°C/W), same electrical specs. | Suitable for lower-power, through-hole designs with heatsink mounting; not rated for 48V+ industrial inputs. | Select LM2575T-5.0 only when input voltage remains ≤40V and board space allows TO-220 footprint. |
| LM2596SX-5.0 | 1.5A output, 150 kHz switching, adjustable soft-start, different pinout and layout requirements. | Better suited for higher-current or noise-sensitive applications; requires redesign of inductor, diode, and compensation. | Choose LM2596SX-5.0 if >1A output or improved ripple/noise performance is required - not a drop-in replacement. |
Compared with LM2575T-5.0, LM2575HVMX-5.0 provides 50% higher input voltage headroom and superior thermal performance in surface-mount form; versus LM2596SX-5.0, it offers proven industrial reliability at lower cost and simpler layout, albeit with reduced current and frequency flexibility.
Availability
LM2575HVMX-5.0 is available at Aetrix Electronics and suitable for industrial power supplies, automotive control units, telecom remote units, and programmable logic controllers requiring stable component supply with long-term lifecycle support.
Supply support for LM2575HVMX-5.0 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 series was designed specifically for industrial and automotive applications demanding wide-input-voltage buck regulation with minimal external components and robust fault protection.
FAQ
What is the maximum input voltage rating for LM2575HVMX-5.0?
The LM2575HVMX-5.0 has an absolute maximum input voltage rating of 63V and a recommended operating maximum of 60V. This allows direct use with 48V industrial buses and automotive systems subject to load dump transients, unlike standard LM2575 variants limited to 40V. Operation above 60V risks permanent damage.
Does LM2575HVMX-5.0 require external feedback resistors?
No. The LM2575HVMX-5.0 is a fixed-output version with internal resistor divider set to 5.0V; the Feedback (pin 4) is internally connected and must remain unconnected. External resistors are only required for the adjustable (ADJ) variant, such as LM2575HVMX-ADJ.
What thermal performance can be expected from LM2575HVMX-5.0 in a real PCB layout?
With the DDPAK/TO-263 package soldered to 1 in² of copper area, LM2575HVMX-5.0 achieves θJA = 37°C/W. At 1A load and 25°C ambient, junction temperature rises ~37°C - well within the 125°C max rating. Reducing copper area increases thermal resistance proportionally; 0.5 in² yields θJA = 50°C/W.
Can LM2575HVMX-5.0 be used in automotive applications?
Yes. LM2575HVMX-5.0 operates from −40°C to +125°C junction temperature and supports 60V input, making it suitable for automotive control units. While not AEC-Q200 certified as a standalone part, its P+ product enhancement testing and field-proven reliability support automotive use when qualified per system-level requirements.
What catch diode is recommended for LM2575HVMX-5.0?
A Schottky diode with ≥30V reverse voltage rating and ≥1.2A average current rating is recommended - e.g., SR103 (30V, 1A) or MBR240 (40V, 2A). The diode must handle peak currents up to 3.2A during current limit events and be placed adjacent to the IC to minimize parasitic inductance in the high-di/dt return path.
LM2575HVMX-5.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
LM2575HVMX-5.0 FAQ
1.How can I place an order for LM2575HVMX-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2575HVMX-5.0 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 LM2575HVMX-5.0 reliable?
The price and inventory of LM2575HVMX-5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2575HVMX-5.0 is usually 5 days.
3.What payment methods are accepted for LM2575HVMX-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2575HVMX-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2575HVMX-5.0?
LM2575HVMX-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2575HVMX-5.0 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 LM2575HVMX-5.0?
For technical support, including LM2575HVMX-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2575HVMX-5.0 requirements.
6.How does Aetrix verify that LM2575HVMX-5.0 is sourced from the original manufacturer or authorized distributors?
All LM2575HVMX-5.0 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 LM2575HVMX-5.0 meets industry standards.
7.What is the process for return or replacement of LM2575HVMX-5.0?
All LM2575HVMX-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM2575HVMX-5.0, 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 LM2575HVMX-5.0 part is unused and in its original packaging.
Return procedure for LM2575HVMX-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2575HVMX-5.0 Tags
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