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Texas Instruments TL2575HV-12IN
- Part No.:
- TL2575HV-12IN
- Manufacturer:
- Texas Instruments
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
TL2575HV-12IN.pdf
- Description:
- IC REG BUCK 12V 1A 16PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,110
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Product details
Overview
TL2575HV-12IN from Texas Instruments is a fixed-output 12-V, 1-A step-down (buck) switching voltage regulator with ±5% output regulation over line, load, and temperature. It operates from 4.75 V to 60 V input, integrates a 1-A power switch, and delivers up to 88% efficiency at 1-A load. Designed for industrial power conversion in motor drives and grid infrastructure, it replaces linear regulators to eliminate heatsinks in many applications.
For engineers reviewing the TL2575HV-12IN datasheet, TL2575HV-12IN pinout, TL2575HV-12IN application, or TL2575HV-12IN equivalent, key selection criteria include its 60-V max input rating, integrated cycle-by-cycle current limiting, thermal shutdown, TTL-compatible ON/OFF control, and compatibility with standard off-the-shelf inductors and Schottky diodes.
Technical Context
The TL2575HV-12IN implements a fixed-frequency (52 kHz typical), current-mode buck topology with internal compensation and a 1.23-V band-gap reference. Its error amplifier compares feedback voltage against this reference to drive the PWM comparator, which modulates the integrated 1-A N-channel MOSFET switch using cycle-by-cycle current limiting.
Operation requires only four external components: input capacitor, output capacitor, catch diode, and power inductor. The ON/OFF pin enables TTL-level shutdown with 50-μA standby current, while thermal shutdown and overcurrent protection operate autonomously without external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 12 V ±5% over full operating range - ensures stable rail for industrial logic and analog circuitry without external resistive divider. |
| Input Voltage Range | 4.75 V to 60 V - supports wide-input industrial DC supplies including 24-V, 48-V, and battery-backed systems. |
| Output Current | 1 A continuous - sufficient to power microcontrollers, sensors, gate drivers, and small actuators directly. |
| Switching Frequency | 52 kHz typical - enables use of low-cost, high-saturation-current toroidal or bobbin-core inductors with minimal EMI filtering. |
| Efficiency | Up to 88% at 1-A load - reduces thermal dissipation versus linear regulators, often eliminating heatsink requirements. |
| Standby Current | 50 μA typical - enables low-power sleep modes in battery-operated or energy-conscious systems. |
| Protection Features | Thermal shutdown + cycle-by-cycle current limiting - prevents damage during overload, short-circuit, or ambient overheating without external sensing. |
Pinout & Package
TL2575HV-12IN is available in TO-220 (KV) and TO-263 (KTT) packages. The TO-220 variant uses staggered leads with exposed tab for thermal mounting; TO-263 provides surface-mount capability with similar thermal performance (RθJC(bot) = 0.38 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Unregulated DC input supply | Accepts 4.75–60 V; must be bypassed with ≥47-μF electrolytic capacitor placed adjacent to pin. |
| OUTPUT (Pin 2) | Regulated 12-V output node | Drives load directly; connects to cathode of Schottky catch diode and inductor output terminal. |
| GND (Pin 3) | Power ground reference | Common return for input/output capacitors, diode cathode, and feedback network; critical for noise immunity. |
| FEEDBACK (Pin 4) | Output voltage sense input | Internally connected to 12-V output; no external resistor required - simplifies layout and improves regulation accuracy. |
| ON/OFF (Pin 5) | TTL/CMOS shutdown control | Pull to ≤1.6 V for operation; apply ≥2.2 V to enter 50-μA standby mode - enables system-level power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1-A power switch | Eliminates need for external MOSFET and driver, reducing BOM count and PCB area in compact power designs. |
| Fixed 12-V output with ±5% tolerance | Guarantees compliance with 12-V logic and analog supply standards without trimming or calibration. |
| 52-kHz fixed-frequency oscillator | Enables predictable EMI profile and simplifies filter design versus variable-frequency alternatives. |
| TTL-compatible ON/OFF pin | Allows direct interfacing with microcontroller GPIOs or logic-level signals without level-shifting circuitry. |
| Internal frequency compensation | Permits stable operation with standard aluminum electrolytic output capacitors - no external compensation network needed. |
Applications
| Motor Drive Power Supply | Grid Infrastructure Monitoring Unit |
|---|---|
Use Scenario: Powers gate drivers and MCU in 24-V DC motor controllers used in HVAC actuators and industrial conveyors. IC Role / Device Role / Timing Role: Primary 12-V buck regulator supplying logic and interface circuitry; operates continuously under dynamic load transients. Use Value: Delivers 1-A peak current with 88% efficiency, minimizing thermal stress on enclosure-mounted PCBs without heatsinks. | Use Scenario: Provides isolated 12-V rail for RTU sensor interfaces and communication modules in outdoor substation monitoring systems. IC Role / Device Role / Timing Role: Input-stage DC-DC converter accepting wide-range 24–60 V DC from solar-charged batteries or rectified AC lines. Use Value: 60-V absolute maximum input withstands voltage surges common in utility environments; thermal shutdown protects during extended high-ambient operation. |
| Factory Automation I/O Module | Building Management System Controller |
Use Scenario: Supplies 12-V power to digital isolators, ADC front-ends, and optocoupled outputs in PLC expansion modules. IC Role / Device Role / Timing Role: Fixed-output buck regulator with ON/OFF control synchronized to system watchdog timer for fault recovery. Use Value: 50-μA standby current extends backup runtime during brownout events; ±5% regulation maintains signal integrity across temperature swings. | Use Scenario: Powers HVAC controller boards receiving unregulated 24-VAC-derived DC in commercial building rooftops. IC Role / Device Role / Timing Role: Main 12-V regulator handling intermittent loads from fan speed controllers and damper actuators. Use Value: Cycle-by-cycle current limiting prevents nuisance tripping during motor startup surges; TO-220 package allows direct heatsinking to metal chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2575HV-12 | Same 1-A, 60-V input, fixed-12-V output; identical pinout and electrical specs but different internal oscillator architecture and slightly higher quiescent current (8 mA vs 5–10 mA). | Validated in legacy TI reference designs; may require minor loop compensation adjustment due to differing phase margin. | Preferred for drop-in replacement where LM2575HV-12 is already qualified; verify thermal performance under worst-case load. |
| MP1584EN-LF-Z | 1.5-A, 45-V max input, adjustable output; requires external feedback resistors and has higher switching frequency (1.5 MHz), demanding smaller LC components but stricter layout rules. | Suitable for space-constrained designs needing higher current or programmable output; not pin-compatible. | Select when board redesign permits smaller magnetics and tighter EMI control; avoid if maintaining existing TL2575HV-12 footprint is mandatory. |
Compared with LM2575HV-12, TL2575HV-12IN offers lower quiescent current and improved thermal metrics; compared with MP1584EN-LF-Z, it trades higher current and frequency for simpler layout, proven reliability in harsh environments, and no external feedback dependency.
Availability
TL2575HV-12IN is available at Aetrix Electronics and suitable for motor drives, grid infrastructure monitoring units, and factory automation I/O modules requiring stable component supply with long-term industrial lifecycle support.
Supply support for TL2575HV-12IN 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 experience in industrial-grade power solutions.
The TL2575HV product line was designed specifically for rugged, wide-input industrial buck conversion-targeting applications where reliability, thermal robustness, and minimal external component count outweigh the need for ultra-high frequency or programmability.
FAQ
What is the maximum input voltage rating for TL2575HV-12IN?
The TL2575HV-12IN supports an absolute maximum input voltage of 60 V, with recommended operation from 4.75 V to 60 V. This high-voltage capability makes it suitable for industrial 24-V and 48-V DC systems, battery-powered equipment, and rectified AC inputs where transient spikes must be tolerated. Exceeding 60 V risks permanent damage per the Absolute Maximum Ratings table.
Does TL2575HV-12IN require external feedback resistors?
No, TL2575HV-12IN does not require external feedback resistors. As a fixed-output variant, its FEEDBACK pin is internally connected to the 12-V output stage. External resistors are only needed for the adjustable TL2575HV-ADJ version. This simplifies layout, improves regulation accuracy, and eliminates resistor tolerance errors affecting output voltage.
How does the ON/OFF pin function on TL2575HV-12IN?
The ON/OFF pin on TL2575HV-12IN accepts TTL/CMOS logic levels: grounding or applying ≤1.6 V enables normal operation, while applying ≥2.2 V places TL2575HV-12IN into standby mode with 50-μA typical quiescent current. The pin must not be left floating; it can be safely pulled up to VIN via a resistor. This feature enables precise system-level power sequencing and low-power sleep states.
What thermal protection mechanisms are built into TL2575HV-12IN?
TL2575HV-12IN incorporates two autonomous thermal protections: junction-overtemperature shutdown (triggering at 150°C) and cycle-by-cycle current limiting. When thermal shutdown activates, the device halts switching until junction temperature falls below the hysteresis threshold (~135°C). Current limiting prevents destructive inductor saturation during overload or short-circuit conditions - both functions require no external components.
Which package options are available for TL2575HV-12IN?
TL2575HV-12IN is offered in TO-220 (KV) and TO-263 (KTT) packages. Both provide identical electrical performance and thermal resistance to case (RθJC(bot) = 0.38 °C/W), but differ mechanically: TO-220 uses through-hole staggered leads with metal tab for chassis heatsinking, while TO-263 is surface-mount with exposed pad for PCB thermal relief. PDIP packaging is not available for the HV variant.
TL2575HV-12IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.75V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 12V
- 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
TL2575HV-12IN FAQ
1.How can I place an order for TL2575HV-12IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TL2575HV-12IN 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 TL2575HV-12IN reliable?
The price and inventory of TL2575HV-12IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL2575HV-12IN is usually 5 days.
3.What payment methods are accepted for TL2575HV-12IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL2575HV-12IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL2575HV-12IN?
TL2575HV-12IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL2575HV-12IN 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 TL2575HV-12IN?
For technical support, including TL2575HV-12IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL2575HV-12IN requirements.
6.How does Aetrix verify that TL2575HV-12IN is sourced from the original manufacturer or authorized distributors?
All TL2575HV-12IN 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 TL2575HV-12IN meets industry standards.
7.What is the process for return or replacement of TL2575HV-12IN?
All TL2575HV-12IN units undergo pre-shipment inspection (PSI). If there is an issue with TL2575HV-12IN, 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 TL2575HV-12IN part is unused and in its original packaging.
Return procedure for TL2575HV-12IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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