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Texas Instruments LM2575HVN-15/NOPB
- Part No.:
- LM2575HVN-15/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
LM2575HVN-15/NOPB.pdf
- Description:
- IC REG BUCK 15V 1A 16PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,782
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Product details
Overview
LM2575HVN-15/NOPB from Texas Instruments is a monolithic 1A step-down (buck) switching voltage regulator with fixed 15V output, 60V maximum input voltage, 52 kHz fixed-frequency internal oscillator, ±4% output voltage tolerance at 15V, and thermal shutdown/current limit protection. It replaces linear regulators in industrial power supplies requiring high efficiency and minimal external components.
For engineers reviewing the LM2575HVN-15/NOPB datasheet, LM2575HVN-15/NOPB pinout, LM2575HVN-15/NOPB application, or LM2575HVN-15/NOPB equivalent, this page delivers verified technical context, real-world design meaning of key specs, TO-220 package terminal mapping, application-specific implementation value, and two validated alternative parts with precise functional and selection guidance.
Technical Context
The LM2575HVN-15/NOPB integrates a PWM controller, power switch, oscillator, error amplifier, and current-limit circuit in a single IC. Its 52 kHz fixed-frequency operation enables predictable EMI filtering and use of standard off-the-shelf inductors rated for ≥1.15 A DC and 52 kHz.
It operates in continuous conduction mode with cycle-by-cycle current limiting (2.2 A peak), 98% max duty cycle, and TTL-compatible ON/OFF control (12 μA standby current). Input voltage range spans 18–60 V, supporting wide-input industrial and automotive pre-regulation applications without external boost circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 15 V ±4% over 0.2–1 A load and 18–60 V input - ensures stable rail for analog front-ends or logic interfaces without external feedback resistors. |
| Max Input Voltage | 60 V - supports direct connection to unregulated 48 V telecom or industrial bus systems without pre-drop stage. |
| Switching Frequency | 52 kHz ±10% - enables use of low-cost, high-saturation-current inductors (e.g., Pulse PE-52627) and simplifies EMI filter design. |
| Output Current | 1 A continuous - sufficient to power microcontrollers, sensors, and isolated gate drivers without heat sink under typical PCB copper area. |
| Efficiency | 88% at VIN = 18 V, IOUT = 1 A - reduces power loss by >60% versus linear regulators, minimizing thermal stress in enclosed enclosures. |
| Quiescent Current | 5 mA operating / 50 μA standby - enables low-power sleep modes in battery-backed or energy-harvesting systems. |
| Thermal Resistance | θJA = 100°C/W (SOIC) - requires minimum 1 in² copper pour for full 1 A operation at 125°C ambient per TI layout guidelines. |
Pinout & Package
LM2575HVN-15/NOPB uses a 5-lead SOIC (Small Outline Integrated Circuit) package (Package Number DW0024B), surface-mount, with exposed thermal pad connected to GND for enhanced heat dissipation. Pin 1 is marked by dot or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input voltage supply | Accepts 18–60 V DC; requires ≥47 μF low-ESR aluminum electrolytic capacitor placed within 5 mm of pin. |
| 2 (OUT) | Switched output node | Drives external catch diode anode and inductor; connects to LC filter output; not internally regulated - voltage set by external components. |
| 3 (GND) | Power and signal ground | Common return for input cap, output cap, diode cathode, and feedback network; must tie to thermal pad for θJA = 100°C/W rating. |
| 4 (FEEDBACK) | Output voltage sense | Internally compared to 1.23 V reference; unused in fixed-output versions - left open or grounded per TI recommendation. |
| 5 (ON/OFF) | TTL-compatible enable control | Logic high (>2.2 V) enables regulation; logic low (<0.8 V) disables output and reduces IQ to 50 μA - used for system-level power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1A power switch | Eliminates need for external MOSFET and driver, reducing BOM count and layout complexity in space-constrained designs. |
| Fixed 52 kHz oscillator | Enables deterministic loop compensation and eliminates external timing components - critical for repeatable production validation. |
| TTL shutdown capability | Allows clean system-level power-down with <100 μA standby current, meeting IEC 62301 standby power requirements. |
| Thermal shutdown + current limit | Protects against sustained overload or short-circuit without external sensing - prevents catastrophic failure during field deployment. |
| Requires only 4 external components | Input cap, output cap, inductor, and catch diode - accelerates prototyping and reduces qualification effort for Class B/C industrial systems. |
Applications
| Industrial Power Supply | Automotive Pre-Regulator |
|---|---|
Use Scenario: Provides stable 15 V rail for PLC I/O modules operating from 24 V or 48 V DC bus with ±20% line variation. IC Role / Device Role / Timing Role: Primary buck converter delivering regulated 15 V at up to 1 A with 88% efficiency and no heatsink required on 2-layer board. Use Value: Replaces LM7815 linear regulator, cutting thermal load by 7.5 W at full load and eliminating forced-air cooling. |
Use Scenario: Generates 15 V intermediate rail from vehicle battery (9–16 V nominal, up to 60 V load dump) for infotainment audio amplifiers. IC Role / Device Role / Timing Role: High-input-voltage buck regulator with built-in 60 V absolute max rating and cycle-by-cycle current limiting for surge resilience. Use Value: Survives ISO 7637-2 pulse 5a (75 V/100 ms) without latch-off or component stress, enabling single-stage conversion. |
| On-Card DC-DC Converter | Positive-to-Negative Inverter |
Use Scenario: Local 15 V generation on motor drive control boards where 24 V backplane is shared across multiple subsystems. IC Role / Device Role / Timing Role: Compact SOIC-based buck regulator mounted directly adjacent to MCU and gate drivers to minimize noise coupling. Use Value: Achieves <50 mVpp output ripple with 330 μH inductor and 330 μF output capacitor - meets ADC reference stability requirements. |
Use Scenario: Generates –15 V rail from +15 V supply for op-amp biasing in precision instrumentation front-ends. IC Role / Device Role / Timing Role: Configured as buck-boost inverting topology using same external components as buck mode per TI Figure 25. Use Value: Delivers –15 V at 300 mA with <±5% regulation - avoids need for separate negative charge-pump IC or transformer-based solution. |
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-15 | TO-220 package (θJA = 65°C/W), higher thermal performance but through-hole mounting; identical electrical specs. | Preferred for high-reliability, high-temperature environments where SOIC thermal margin is insufficient. | Select when board-level airflow is limited and thermal derating below 1 A is unacceptable. |
| LM2596S-15 | 1.5 A output, 150 kHz switching frequency, adjustable soft-start; requires different inductor (68 μH vs 330 μH) and layout. | Suitable for higher-current or lower-ripple designs where footprint increase is acceptable. | Choose only if 1 A limit of LM2575HVN-15/NOPB is inadequate or 52 kHz EMI conflicts with sensitive RF sections. |
Compared with LM2575T-15, the LM2575HVN-15/NOPB offers surface-mount assembly and smaller footprint but requires careful thermal pad layout; versus LM2596S-15, it trades higher current and frequency for proven 52 kHz EMI behavior and simpler magnetics selection.
Availability
LM2575HVN-15/NOPB is available at Aetrix Electronics and suitable for industrial power supplies, automotive pre-regulators, on-card DC-DC converters, and positive-to-negative inverters requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LM2575HVN-15/NOPB 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 LM2575 series was designed specifically for cost-sensitive, high-efficiency buck regulation in industrial, automotive, and telecom infrastructure - emphasizing simplicity, ruggedness, and compatibility with standard passive components.
FAQ
What is the maximum input voltage rating for LM2575HVN-15/NOPB?
The LM2575HVN-15/NOPB has an absolute maximum input voltage of 63 V and a recommended operating maximum of 60 V. This HV variant supports direct connection to 48 V industrial buses and withstands automotive load-dump transients up to ISO 7637-2 Pulse 5a (75 V, 100 ms) when properly decoupled with ≥47 μF input capacitance. Exceeding 60 V continuously risks exceeding junction temperature limits even with adequate PCB copper.
Does LM2575HVN-15/NOPB require external feedback resistors?
No, LM2575HVN-15/NOPB is a fixed-output version with internal resistor divider setting 15 V output. Pin 4 (FEEDBACK) is not connected internally and must be left open or grounded per TI datasheet recommendations - no external resistors are needed, simplifying layout and eliminating resistor tolerance drift from output regulation.
What inductor value is required for LM2575HVN-15/NOPB at 1 A load?
For LM2575HVN-15/NOPB operating at 1 A with 18–60 V input, TI specifies a 330 μH inductor rated for ≥1.15 A DC current and 52 kHz operation. Recommended part numbers include Pulse Engineering PE-52627 or Renco RL1952. Using a lower-value inductor causes excessive peak current, triggering current limit and reducing efficiency or causing instability.
How does the ON/OFF pin function on LM2575HVN-15/NOPB?
The ON/OFF pin (Pin 5) of LM2575HVN-15/NOPB provides TTL-compatible enable control: applying >2.2 V enables regulation; <0.8 V disables output and reduces quiescent current to 50 μA. It draws only 12 μA when enabled, making it suitable for microcontroller GPIO control without level-shifting. The pin must not float - tie to GND or VIN via appropriate logic buffer.
Is LM2575HVN-15/NOPB RoHS compliant and lead-free?
Yes, LM2575HVN-15/NOPB is RoHS compliant and lead-free, as indicated by the "/NOPB" suffix per Texas Instruments' packaging nomenclature. It meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3) and is qualified for reflow soldering per IPC/JEDEC J-STD-020 standards. Full compliance documentation is available in TI's official product folder for LM2575HVN-15/NOPB.
LM2575HVN-15/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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):
- 15V
- 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-15/NOPB FAQ
1.How can I place an order for LM2575HVN-15/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2575HVN-15/NOPB 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-15/NOPB reliable?
The price and inventory of LM2575HVN-15/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2575HVN-15/NOPB is usually 5 days.
3.What payment methods are accepted for LM2575HVN-15/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2575HVN-15/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2575HVN-15/NOPB?
LM2575HVN-15/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2575HVN-15/NOPB 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-15/NOPB?
For technical support, including LM2575HVN-15/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2575HVN-15/NOPB requirements.
6.How does Aetrix verify that LM2575HVN-15/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2575HVN-15/NOPB 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-15/NOPB meets industry standards.
7.What is the process for return or replacement of LM2575HVN-15/NOPB?
All LM2575HVN-15/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2575HVN-15/NOPB, 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-15/NOPB part is unused and in its original packaging.
Return procedure for LM2575HVN-15/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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