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Texas Instruments TL2575HV-ADJIKTTR
- Part No.:
- TL2575HV-ADJIKTTR
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
TL2575HV-ADJIKTTR.pdf
- Description:
- IC REG BUCK ADJ 1A TO263
- Quantity:
- Payment:
- Shipping:
Inventory:1,508
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Product details
Overview
TL2575HV-ADJIKTTR from Texas Instruments is a 1-A adjustable-output buck switching voltage regulator with integrated 1-A N-channel MOSFET switch, 1.23-V internal reference, and fixed 52-kHz oscillator. It operates from 4.75 V to 60 V input, delivers output from 1.23 V to 57 V, and achieves up to 88% efficiency in high-current applications such as industrial power supplies and motor drive bias rails.
For engineers reviewing the TL2575HV-ADJIKTTR datasheet, TL2575HV-ADJIKTTR pinout, TL2575HV-ADJIKTTR application, or TL2575HV-ADJIKTTR equivalent, this page provides verified technical context, package-specific pin functions, confirmed regulation accuracy (±4%), thermal shutdown behavior, and real-world design implications for high-input-voltage DC-DC conversion.
Technical Context
The TL2575HV-ADJIKTTR implements a current-mode control architecture with cycle-by-cycle current limiting and internal frequency compensation. Its 1.23-V bandgap reference feeds a fixed-gain error amplifier that compares feedback voltage against reference to modulate PWM duty cycle via a 52-kHz oscillator and comparator-driven switch driver.
It supports manual shutdown via TTL-compatible ON/OFF pin (50-μA standby current), integrates thermal shutdown and overcurrent protection, and requires only four external components-inductor, catch diode, input capacitor, and two feedback resistors-for full operation in adjustable-output configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 1 A continuous - supports industrial loads without external current boosting |
| Input voltage range | 4.75 V to 60 V - enables direct connection to 48-V telecom, battery stacks, or unregulated HV rails |
| Output voltage range | 1.23 V to 57 V - set by external R1/R2 divider; avoids need for multiple fixed-output SKUs |
| Feedback reference | 1.23 V ±1.4% - defines output accuracy baseline; used directly in VOUT = 1.23 × (1 + R2/R1) |
| Oscillator frequency | 52 kHz typical - fixed-frequency operation simplifies EMI filtering and inductor selection |
| Regulation accuracy | ±4% over line, load, and temperature - ensures stable output under varying input and thermal conditions |
| Standby current | 50 μA typical - enables low-power sleep modes in battery-backed or energy-sensitive systems |
Pinout & Package
TL2575HV-ADJIKTTR is supplied in the TO-263-5 (KTT) thermally enhanced surface-mount package (10.16 mm × 8.93 mm), with exposed thermal pad for PCB heat sinking. Pin numbering follows top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power input | Accepts 4.75–60 V unregulated DC; must be bypassed with ≥100 µF electrolytic capacitor near pin |
| OUTPUT (Pin 2) | Switch node | Drives external inductor and catch diode; carries pulsed 1-A switch current; connects to output filter |
| GND (Pin 3) | Power ground | Main return path for switch current and IC bias; must be low-impedance, tied to thermal pad |
| FEEDBACK (Pin 4) | Regulation sense | Connects between R1 (to GND) and R2 (to VOUT); sets output via 1.23-V reference; <100 kΩ total resistance recommended |
| ON/OFF (Pin 5) | Shutdown control | TTL/CMOS-compatible enable: ≤1.2 V = active, ≥2.2 V = standby (50 μA IQ); must not float |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1-A N-channel switch | Eliminates external MOSFET and gate driver; reduces BOM count and layout complexity |
| Fixed 52-kHz oscillator | Enables predictable EMI profile and consistent inductor sizing across designs |
| Cycle-by-cycle current limiting | Prevents switch damage during short-circuit or overload without requiring external sensing |
| Thermal shutdown | Protects device at TJ ≥ 150°C; auto-recovery on cooldown avoids latch-up failure mode |
| TTL shutdown interface | Supports microcontroller-controlled power sequencing with minimal external logic |
Applications
| Industrial Motor Drive Bias Supply | 48-V Telecom Power Conversion |
|---|---|
|
Use Scenario: Providing regulated 5-V or 12-V auxiliary power for gate drivers, sensors, and MCU in 24–48-V motor inverters. IC Role / Device Role / Timing Role: Primary buck regulator delivering isolated, low-noise bias rail from high-voltage bus. Use Value: 60-V max input withstands transient surges common in motor commutation; 1-A output sustains peak gate charge demands. |
Use Scenario: Converting -48-V or +48-V telecom supply to 3.3-V or 5-V logic rails in base station equipment. IC Role / Device Role / Timing Role: High-efficiency step-down converter operating in continuous conduction mode at full load. Use Value: 88% typical efficiency minimizes heat generation in densely packed telecom modules; ±4% regulation maintains logic integrity. |
| Grid Infrastructure Sensor Node | Factory Automation I/O Module |
|
Use Scenario: Powering isolated analog front-ends and wireless transceivers in outdoor smart-grid meters exposed to wide ambient temperatures. IC Role / Device Role / Timing Role: Robust DC-DC stage tolerant of input ripple, cold start (-40°C), and long-term reliability requirements. Use Value: Specified operation from –40°C to 125°C virtual junction temperature ensures field stability; 50-μA standby enables battery backup. |
Use Scenario: Generating 12-V or 24-V auxiliary power for solenoid drivers, optocouplers, and PLC I/O circuitry in industrial controllers. IC Role / Device Role / Timing Role: Adjustable-output buck regulator supporting multiple output voltages from single BOM variant. Use Value: 1.23–57-V output range allows reuse across diverse I/O voltage standards without redesigning power stage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable-output buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2575HV-ADJ | Same 1-A rating and 60-V input, but uses older architecture with lower efficiency (max 85%) and higher quiescent current (11 mA vs. 5–10 mA) | Lacks integrated thermal shutdown reset hysteresis; less robust in sustained overload | Consider only if legacy LM2575 footprint compatibility is required; otherwise TL2575HV-ADJIKTTR offers superior thermal and efficiency performance |
| TPS54160DGQ | Higher switching frequency (1.6 MHz), smaller external components, but lower 1.5-A peak current and no integrated catch diode driver | Requires external high-side FET and diode; more complex layout and loop compensation | Preferred for space-constrained designs needing >500-kHz operation; TL2575HV-ADJIKTTR better suits cost-sensitive, high-voltage, low-frequency applications |
Compared with LM2575HV-ADJ and TPS54160DGQ, TL2575HV-ADJIKTTR delivers optimal balance of rugged 60-V input tolerance, integrated switch/diode drive, and proven thermal protection-making it ideal for industrial and infrastructure applications where reliability outweighs ultra-compact size.
Availability
TL2575HV-ADJIKTTR is available at Aetrix Electronics and suitable for industrial motor drives, grid infrastructure monitoring, and factory automation systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TL2575HV-ADJIKTTR 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 family was designed specifically for rugged, high-input-voltage DC-DC conversion in industrial, automotive, and infrastructure applications-emphasizing simplicity, thermal resilience, and minimal external component count.
FAQ
What is the maximum input voltage supported by TL2575HV-ADJIKTTR?
The TL2575HV-ADJIKTTR supports a maximum input voltage of 60 V, as specified in its absolute maximum ratings. This rating applies across the full operating temperature range and enables direct use with 48-V battery systems, rectified AC lines, and other high-voltage industrial sources without pre-regulation. Exceeding 60 V risks permanent damage per TI's datasheet SLVS638D.
How do I calculate the output voltage for TL2575HV-ADJIKTTR?
The output voltage of TL2575HV-ADJIKTTR is set by two external resistors: VOUT = 1.23 V × (1 + R2/R1), where R1 connects from FEEDBACK to GND and R2 connects from FEEDBACK to OUTPUT. For example, using R1 = 1 kΩ and R2 = 3.1 kΩ yields 5 V output. The datasheet specifies R1 and R2 should each be ≤100 kΩ to minimize noise sensitivity and ensure regulation accuracy.
Does TL2575HV-ADJIKTTR require an external catch diode?
Yes, TL2575HV-ADJIKTTR requires an external Schottky catch diode (e.g., 1N5819 or equivalent) connected from OUTPUT to GND. The IC integrates only the high-side switch; the diode completes the buck converter's freewheeling path. TI recommends Schottky diodes for low forward voltage and fast recovery-especially critical at 52-kHz switching to minimize conduction losses and EMI.
What thermal considerations apply to TL2575HV-ADJIKTTR in TO-263 package?
TL2575HV-ADJIKTTR in the KTT (TO-263-5) package has a junction-to-ambient thermal resistance (RθJA) of 26.5°C/W when mounted on a 1-in² 2-oz copper pad. To maintain safe operation below 125°C virtual junction temperature, PCB layout must include adequate copper area under the exposed thermal pad and minimize trace resistance to GND. Thermal shutdown activates at ~150°C and recovers automatically after cooldown.
Can TL2575HV-ADJIKTTR be used in discontinuous conduction mode?
Yes, TL2575HV-ADJIKTTR operates naturally in discontinuous conduction mode (DCM) at light loads (≤200 mA), which is explicitly supported per TI's datasheet. In DCM, inductor current falls to zero each cycle, reducing RMS losses and enabling smaller inductors. The IC's cycle-by-cycle current limiting and fixed-frequency oscillator remain fully functional, ensuring stable regulation across both CCM and DCM operation.
TL2575HV-ADJIKTTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- TO-263 (DDPAK-5)
TL2575HV-ADJIKTTR FAQ
1.How can I place an order for TL2575HV-ADJIKTTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL2575HV-ADJIKTTR 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-ADJIKTTR reliable?
The price and inventory of TL2575HV-ADJIKTTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL2575HV-ADJIKTTR is usually 5 days.
3.What payment methods are accepted for TL2575HV-ADJIKTTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL2575HV-ADJIKTTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL2575HV-ADJIKTTR?
TL2575HV-ADJIKTTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL2575HV-ADJIKTTR 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-ADJIKTTR?
For technical support, including TL2575HV-ADJIKTTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL2575HV-ADJIKTTR requirements.
6.How does Aetrix verify that TL2575HV-ADJIKTTR is sourced from the original manufacturer or authorized distributors?
All TL2575HV-ADJIKTTR 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-ADJIKTTR meets industry standards.
7.What is the process for return or replacement of TL2575HV-ADJIKTTR?
All TL2575HV-ADJIKTTR units undergo pre-shipment inspection (PSI). If there is an issue with TL2575HV-ADJIKTTR, 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-ADJIKTTR part is unused and in its original packaging.
Return procedure for TL2575HV-ADJIKTTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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