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Texas Instruments LM2575HVN-5.0
- Part No.:
- LM2575HVN-5.0
- Manufacturer:
- Texas Instruments
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
LM2575HVN-5.0.pdf
- Description:
- IC REG BUCK 5V 1A 16PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,937
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Product details
Overview
LM2575HVN-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, ±4% output voltage tolerance over line/load/temperature, 52 kHz fixed-frequency internal oscillator, and integrated thermal shutdown and cycle-by-cycle current limiting. It replaces linear regulators in industrial power supplies requiring high efficiency and minimal external components.
For engineers reviewing the LM2575HVN-5.0 datasheet, LM2575HVN-5.0 pinout, LM2575HVN-5.0 application, or LM2575HVN-5.0 equivalent, key selection criteria include input voltage range up to 60V, guaranteed 1A output current at 5V, TO-220-5 package thermal performance, and compatibility with standard off-the-shelf inductors and Schottky catch diodes.
Technical Context
The LM2575HVN-5.0 implements a fixed-frequency pulse-width modulation (PWM) buck topology with internal 52 kHz oscillator and integrated N-channel DMOS power switch. Regulation is achieved via feedback of the output voltage to an internal error amplifier comparing against a 1.23V reference.
It features TTL-compatible ON/OFF control (pin 5), cycle-by-cycle current limiting with 2.2A typical peak limit, thermal shutdown at ~165°C junction temperature, and 50 μA typical standby quiescent current when disabled. The device operates across −40°C to +125°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±4% over 8V–60V input, 0.2A–1A load, −40°C to +125°C |
| Max Input Voltage | 60V - enables direct regulation from 48V telecom or industrial bus rails without pre-regulation |
| Output Current | 1A continuous - supports single-rail microcontroller, FPGA I/O, or sensor subsystems |
| Oscillator Frequency | 52 kHz ±10% - balances EMI, inductor size, and capacitor ripple requirements |
| Efficiency | 77% at 12VIN/5VOUT/1A - reduces heat sink need vs. linear regulators |
| Quiescent Current | 5 mA operating / 50 μA standby - enables low-power sleep modes in battery-backed systems |
| Thermal Resistance | θJA = 85°C/W (PDIP) - requires PCB copper area or heatsink for full 1A operation at high ambient |
Pinout & Package
LM2575HVN-5.0 is housed in a 5-lead PDIP (plastic dual in-line package), package code DW0024B, with exposed pad not internally connected. Pin 1 is Output, Pin 2 is Ground, Pin 3 is Input, Pin 4 is Feedback (internally tied to 5V output), Pin 5 is ON/OFF.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Switched output node | Drives external inductor; connects to cathode of catch diode and output capacitor |
| 2 (GND) | Power and signal ground reference | Common return for internal circuitry, switch, and feedback amplifier; must be low-inductance connection |
| 3 (IN) | Main power input | Accepts 8–60V DC; requires local 47–100 μF aluminum electrolytic bypass capacitor |
| 4 (FEEDBACK) | Internal voltage sense point | Internally connected to 5V output; no external resistor required for fixed-version operation |
| 5 (ON/OFF) | Digital enable/disable control | TTL-compatible input: <1.0V = ON, >2.2V = OFF; draws ≤30 μA in shutdown |
Key Features
| Feature | Design Value |
|---|---|
| Integrated power switch | N-channel DMOS transistor with 0.9V typical saturation voltage at 1A - minimizes conduction loss |
| Fixed-frequency PWM control | 52 kHz oscillator with ±10% tolerance - simplifies EMI filtering and inductor selection |
| Protection functions | Auto-recovering thermal shutdown + cycle-by-cycle current limit - prevents damage during overload or short-circuit |
| Low-component count design | Only 4 external parts required: input cap, output cap, inductor, catch diode - accelerates prototyping |
| Wide-input industrial grade | 60V max input + −40°C to +125°C operating range - suitable for harsh environments without derating |
Applications
| Industrial Power Supply | Embedded Controller Board |
|---|---|
Use Scenario: 24V or 48V factory floor bus powering isolated 5V logic rails for PLC I/O modules. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator delivering stable 5V to microcontrollers, ADCs, and digital isolators. Use Value: Eliminates need for bulky linear regulators and heat sinks while maintaining ±4% output accuracy across wide input transients. |
Use Scenario: On-board 5V supply for ARM Cortex-M7-based edge gateway with Ethernet and RS-485 interfaces. IC Role / Device Role / Timing Role: Main system power regulator enabling low-noise 5V rail for mixed-signal peripherals and communication PHYs. Use Value: 52 kHz switching frequency avoids sensitive audio or RF bands; 1A capacity supports burst-mode Ethernet traffic without dropout. |
| Test Equipment Front-End | Legacy System Retrofit |
Use Scenario: Portable multimeter or oscilloscope accessory module powered from 9V alkaline or 12V Li-ion battery pack. IC Role / Device Role / Timing Role: Efficient pre-regulator stepping down variable battery voltage to clean 5V for precision analog front-end and display controller. Use Value: 77% efficiency at 1A extends battery life; 50 μA standby current preserves charge during instrument sleep mode. |
Use Scenario: Replacement of obsolete 7805 linear regulator in aging medical diagnostic equipment with 48V backplane. IC Role / Device Role / Timing Role: Drop-in efficiency upgrade maintaining same 5V output while reducing board temperature rise by >40°C. Use Value: TO-220-5 pinout matches legacy footprint; no PCB redesign needed; eliminates mandatory heat sink. |
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 architecture but rated for 40V max input (not 60V); TO-220-5 package with higher θJA (65°C/W unmounted) | Suitable only for ≤40V input systems; requires larger heatsink at full 1A load | Select LM2575T-5.0 only if input never exceeds 40V and thermal margin allows TO-220 mounting without extended copper. |
| LM2596S-5.0 | Higher 150 kHz switching frequency; 3A output rating; different pinout (TO-263-5); requires smaller inductor | Better suited for space-constrained designs; not pin-compatible; needs layout revision | Choose LM2596S-5.0 when board area is limited or future 3A headroom is required; LM2575HVN-5.0 remains optimal for 60V input robustness and drop-in replacement. |
Compared with LM2575T-5.0, LM2575HVN-5.0 delivers 50% higher input voltage capability and superior thermal performance in PDIP; versus LM2596S-5.0, it trades higher frequency for proven 60V ruggedness and direct legacy compatibility - making it the preferred choice for industrial retrofit and high-input-voltage reliability-critical designs.
Availability
LM2575HVN-5.0 is available at Aetrix Electronics and suitable for industrial power supplies, embedded controller boards, test equipment front-ends, and legacy system retrofits requiring stable component supply with long-term lifecycle assurance.
Supply support for LM2575HVN-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 ICs, with decades of expertise in switching regulator design and manufacturing.
The LM2575HVN-5.0 belongs to TI's SIMPLE SWITCHER® family - engineered specifically for cost-sensitive, high-reliability industrial and automotive power conversion where ease of use, ruggedness, and minimal external components are critical.
FAQ
What is the absolute maximum input voltage rating for the LM2575HVN-5.0?
The LM2575HVN-5.0 has an absolute maximum input voltage rating of 63V, with recommended operating maximum of 60V. This distinguishes it from standard LM2575 variants (45V abs max, 40V operating), enabling direct regulation from 48V industrial buses or unregulated 60V supplies without external pre-regulation. Exceeding 60V in normal operation risks exceeding thermal limits under full load.
Does the LM2575HVN-5.0 require external feedback resistors to set its 5.0V output?
No, the LM2575HVN-5.0 does not require external feedback resistors. Its feedback pin (Pin 4) is internally connected to the regulated 5.0V output, eliminating the need for external resistor dividers. This simplifies layout, improves accuracy by removing resistor tolerance and drift effects, and reduces bill-of-materials count - a key advantage over adjustable versions like LM2575HV-ADJ.
Can the LM2575HVN-5.0 be used in a synchronous rectification configuration?
No, the LM2575HVN-5.0 is not designed for synchronous rectification. It uses an internal N-channel DMOS switch paired with an external Schottky catch diode (e.g., SR103 or MBR340). The device lacks a second gate driver or timing control for a synchronous MOSFET; attempting to replace the diode with a MOSFET will result in shoot-through or improper switching behavior due to uncontrolled body diode conduction and lack of complementary drive.
What is the minimum input voltage required for the LM2575HVN-5.0 to regulate 5.0V output at full 1A load?
The LM2575HVN-5.0 requires a minimum input voltage of approximately 7.5V to sustain 5.0V output at 1A load, based on its typical 0.9V switch saturation voltage and diode forward drop. At lower inputs, duty cycle approaches 100%, causing increased conduction losses and potential thermal shutdown. For reliable 1A operation across temperature, ≥8V input is specified in the datasheet under all conditions.
How does the ON/OFF pin (Pin 5) function on the LM2575HVN-5.0?
The ON/OFF pin (Pin 5) provides TTL-compatible digital enable/disable control: applying <1.0V (typically 0V) enables regulation, while >2.2V (typically 5V or VIN) disables the output and reduces quiescent current to 50 μA typical. The pin draws ≤30 μA in shutdown and has no internal pull-up; an external pull-down resistor is recommended if left unconnected to prevent floating-state oscillation.
LM2575HVN-5.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 16-PDIP
LM2575HVN-5.0 FAQ
1.How can I place an order for LM2575HVN-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2575HVN-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 LM2575HVN-5.0 reliable?
The price and inventory of LM2575HVN-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 LM2575HVN-5.0 is usually 5 days.
3.What payment methods are accepted for LM2575HVN-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2575HVN-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2575HVN-5.0?
LM2575HVN-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2575HVN-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 LM2575HVN-5.0?
For technical support, including LM2575HVN-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2575HVN-5.0 requirements.
6.How does Aetrix verify that LM2575HVN-5.0 is sourced from the original manufacturer or authorized distributors?
All LM2575HVN-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 LM2575HVN-5.0 meets industry standards.
7.What is the process for return or replacement of LM2575HVN-5.0?
All LM2575HVN-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM2575HVN-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 LM2575HVN-5.0 part is unused and in its original packaging.
Return procedure for LM2575HVN-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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