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Texas Instruments TL2575HV-ADJIN
- Part No.:
- TL2575HV-ADJIN
- Manufacturer:
- Texas Instruments
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
TL2575HV-ADJIN.pdf
- Description:
- IC REG BUCK ADJ 1A 16PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,340
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Product details
Overview
TL2575HV-ADJIN from Texas Instruments is a 1-A adjustable-output step-down (buck) switching voltage regulator IC with integrated 1-A power switch, 4.75 V to 60 V input range, 1.23 V to 57 V output adjustability, ±4% regulation over line/load/temperature, and 52-kHz fixed-frequency operation. It delivers high-efficiency DC-DC conversion in industrial motor drives and grid infrastructure power supplies.
For engineers reviewing the TL2575HV-ADJIN datasheet, TL2575HV-ADJIN pinout, TL2575HV-ADJIN application, or TL2575HV-ADJIN equivalent, key selection considerations include its HV input capability (60 V max), ON/OFF shutdown control (50 μA standby), thermal/current protection, and compatibility with standard off-the-shelf inductors for minimal BOM count.
Technical Context
The TL2575HV-ADJIN implements a current-mode buck topology with internal 52-kHz oscillator, cycle-by-cycle current limiting, and thermal shutdown. Its feedback loop uses a precision 1.23-V band-gap reference and fixed-gain error amplifier to regulate output via external resistor divider.
It operates across –40°C to +125°C virtual junction temperature, supports manual shutdown via TTL-compatible ON/OFF pin, and integrates internal frequency compensation-eliminating need for external compensation components in typical designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1 A continuous - supports full-load operation without external current boosting |
| Input Voltage Range | 4.75 V to 60 V - enables direct connection to unregulated 48-V telecom, industrial, or battery-derived rails |
| Output Voltage Range | 1.23 V to 57 V - set by external R1/R2 divider; covers wide range including 3.3 V, 5 V, 12 V, 24 V, and 48 V systems |
| Feedback Reference | 1.23 V ±1.5% - precise internal reference enabling tight output regulation with low-resistor-tolerance dividers |
| Oscillator Frequency | 52 kHz (typical), 42–63 kHz (full temp range) - fixed frequency simplifies EMI filtering and inductor selection |
| Standby Quiescent Current | 50 μA (typical) at OFF state - enables ultra-low-power shutdown for energy-sensitive applications |
| Efficiency | Up to 88% (typical at 12 VIN/12 VOUT, 1 A) - reduces thermal load vs. linear regulators; often eliminates heatsink requirement |
| Protection Features | Thermal shutdown + cycle-by-cycle current limiting - prevents damage during overload, short-circuit, or thermal stress |
Pinout & Package
TL2575HV-ADJIN is packaged in TO-220 (KV) with 5 leads, 10.16 mm × 8.82 mm body size, and exposed tab for thermal dissipation. Pin 1 = VIN, Pin 2 = OUTPUT, Pin 3 = GND, Pin 4 = FEEDBACK, Pin 5 = ON/OFF.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Unregulated DC input supply | Accepts 4.75–60 V; requires local 100-μF input capacitor for stability and ripple suppression |
| OUTPUT (Pin 2) | Switched output node | Drives external catch diode and inductor; carries pulsed 1-A peak current; connects to output filter capacitor |
| GND (Pin 3) | Power and signal reference | Common return for internal circuitry, feedback, and ON/OFF logic; must be low-impedance path to minimize noise |
| FEEDBACK (Pin 4) | Regulation sense input | Connects to voltage divider between VOUT and GND; sets output via VREF(1 + R2/R1); bias current ≤500 nA |
| ON/OFF (Pin 5) | Shutdown control input | TTL/CMOS-compatible; <1.2 V = active, >2.2 V = standby; draws 50 μA in shutdown; must not float |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1-A power switch | Eliminates need for external MOSFET and gate driver; reduces board space and design complexity |
| Fixed 52-kHz switching frequency | Enables predictable EMI spectrum and consistent inductor sizing; avoids audible noise in sensitive environments |
| Internal frequency compensation | Requires no external compensation network; simplifies layout and ensures stable loop response with standard capacitors |
| TTL-compatible ON/OFF control | Supports microcontroller-driven power sequencing and system-level sleep modes with minimal external logic |
| Thermal + current-limit protection | Self-protecting under fault conditions; maintains reliability in harsh environments without external monitoring circuits |
| Wide operating temperature range | Specified from –40°C to +125°C virtual junction temperature - suitable for industrial and outdoor deployments |
Applications
| Industrial Motor Drives | Grid Infrastructure Power |
|---|---|
Use Scenario: Powering gate drivers, sensors, and MCU peripherals in variable-frequency AC motor controllers fed from rectified 3-phase mains. IC Role / Device Role / Timing Role: Primary 12-V or 24-V buck converter supplying isolated IGBT/SiC driver stages and analog front-ends. Use Value: 60-V input rating accommodates 400-V DC bus transients; 1-A output sustains multiple downstream rails; thermal protection prevents latch-up during stall conditions. |
Use Scenario: Generating stable 5-V and 3.3-V supplies for smart metering ICs, PLC I/O modules, and communication interfaces in substations and distribution panels. IC Role / Device Role / Timing Role: Non-isolated point-of-load regulator converting 48-V or 60-V backup battery or rectified AC to logic-level voltages. Use Value: High efficiency (>77% at 1 A) minimizes self-heating in sealed enclosures; ±4% regulation ensures ADC reference stability across temperature swings. |
| Factory Automation Controllers | Building Management Systems |
Use Scenario: Powering programmable logic controller (PLC) backplanes, digital I/O cards, and fieldbus transceivers in harsh factory-floor environments. IC Role / Device Role / Timing Role: Main 5-V or adjustable 3.3-V supply for FPGA-based control logic and real-time Ethernet PHYs. Use Value: Robust 60-V input withstands load-dump transients on 24-V DC distribution lines; ON/OFF pin enables firmware-controlled power cycling. |
Use Scenario: Providing regulated 12-V and 24-V outputs for HVAC actuators, occupancy sensors, and wireless gateway modules in commercial buildings. IC Role / Device Role / Timing Role: Adjustable buck regulator delivering configurable voltage to diverse subsystems from common 48-V PoE++ or battery source. Use Value: 1.23–57-V adjustability allows single BOM variant to support multiple actuator types; 50-μA standby enables battery-backed operation during outages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2596HV-ADJ | Higher 63-V absolute max input; 1.5-A rated output; 150-kHz switching frequency; requires external compensation | Better suited for higher-current or higher-frequency designs where smaller inductors are preferred | Choose LM2596HV-ADJ when >1 A load or tighter size constraints justify added compensation complexity |
| TPS54160DGQ | 60-V input, 1.5-A output, 100–2500-kHz adjustable frequency, integrated soft-start, current-sense resistor eliminated | Designed for compact, high-efficiency designs requiring programmable frequency and enhanced protection features | Choose TPS54160DGQ when advanced features like soft-start, adjustable frequency, or better light-load efficiency are required |
Compared with LM2596HV-ADJ and TPS54160DGQ, TL2575HV-ADJIN offers simpler implementation with internal compensation and lower quiescent current in shutdown, making it optimal for cost-sensitive, thermally constrained, or legacy-design-refresh applications where 1-A output and 52-kHz fixed frequency are sufficient.
Availability
TL2575HV-ADJIN is available at Aetrix Electronics and suitable for industrial motor drives, grid infrastructure power supplies, and factory automation controllers requiring stable component supply with long-term lifecycle assurance.
Supply support for TL2575HV-ADJIN 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 TL2575HV product line was designed specifically for rugged, high-input-voltage DC-DC conversion in industrial, energy, and automation systems where simplicity, thermal robustness, and proven reliability are critical.
FAQ
What is the maximum input voltage supported by TL2575HV-ADJIN?
The TL2575HV-ADJIN supports a maximum input voltage of 60 V, as specified in its absolute maximum ratings. This high-voltage capability enables direct use with 48-V battery systems, rectified AC lines, and industrial DC distribution buses without pre-regulation. Operation above 60 V risks permanent device damage and is strictly prohibited per TI's datasheet.
How is the output voltage set on TL2575HV-ADJIN?
The output voltage of TL2575HV-ADJIN is set using an external resistor divider connected to the FEEDBACK pin, based on the formula VOUT = 1.23 V × (1 + R2/R1). The internal 1.23-V reference has ±1.5% tolerance, and feedback bias current remains ≤500 nA across temperature, ensuring accurate and stable adjustment from 1.23 V up to 57 V.
Does TL2575HV-ADJIN require external compensation components?
No, TL2575HV-ADJIN includes internal frequency compensation optimized for standard output capacitor ESR ranges. This eliminates the need for external compensation networks, simplifying design and reducing bill-of-materials count. Stability is maintained with typical aluminum electrolytic or low-ESR polymer capacitors used in conjunction with standard 330-μH inductors.
What protection features does TL2575HV-ADJIN include?
TL2575HV-ADJIN integrates thermal shutdown, cycle-by-cycle current limiting, and safe operating area protection. During overload or short-circuit, it reduces switching frequency to ~18 kHz and duty cycle to ~2%, lowering average power dissipation. These features operate autonomously without external circuitry, ensuring robust operation in demanding industrial environments.
Can TL2575HV-ADJIN be used in discontinuous conduction mode (DCM)?
Yes, TL2575HV-ADJIN naturally transitions into discontinuous conduction mode at light loads (typically <200 mA), which is fully supported and stable. DCM operation reduces switching losses and is acceptable for low-power standby functions. No design changes are needed-the IC manages mode transition seamlessly while maintaining regulation accuracy.
TL2575HV-ADJIN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.75V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 1.23V
- Voltage - Output (Max):
- 57V
- 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-ADJIN FAQ
1.How can I place an order for TL2575HV-ADJIN through Aetrix?
Please submit a Request for Quotation (RFQ) for TL2575HV-ADJIN 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-ADJIN reliable?
The price and inventory of TL2575HV-ADJIN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL2575HV-ADJIN is usually 5 days.
3.What payment methods are accepted for TL2575HV-ADJIN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL2575HV-ADJIN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL2575HV-ADJIN?
TL2575HV-ADJIN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL2575HV-ADJIN 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-ADJIN?
For technical support, including TL2575HV-ADJIN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL2575HV-ADJIN requirements.
6.How does Aetrix verify that TL2575HV-ADJIN is sourced from the original manufacturer or authorized distributors?
All TL2575HV-ADJIN 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-ADJIN meets industry standards.
7.What is the process for return or replacement of TL2575HV-ADJIN?
All TL2575HV-ADJIN units undergo pre-shipment inspection (PSI). If there is an issue with TL2575HV-ADJIN, 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-ADJIN part is unused and in its original packaging.
Return procedure for TL2575HV-ADJIN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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