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Texas Instruments TL2575HV-ADJIKV
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- Part No.:
- TL2575HV-ADJIKV
- Manufacturer:
- Texas Instruments
- Package:
- TO-220-5 Formed Leads
- Datasheet:
-
TL2575HV-ADJIKV.pdf
- Description:
- IC REG BUCK ADJ 1A TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:418
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Product details
Overview
TL2575HV-ADJIKV from Texas Instruments is a 1-A adjustable-output buck switching voltage regulator with integrated 1-A NPN switch, 4.75 V to 60 V input range, 1.23 V to 57 V output range, ±4% regulation over line/load/temperature, and 52-kHz fixed-frequency operation. It delivers high-efficiency DC-DC conversion in industrial power supplies requiring wide-input, robust thermal protection, and simple external component count.
For engineers reviewing the TL2575HV-ADJIKV datasheet, TL2575HV-ADJIKV pinout, TL2575HV-ADJIKV application, or TL2575HV-ADJIKV equivalent, key selection criteria include its HV input capability (60 V max), adjustable feedback architecture (1.23 V reference), ON/OFF logic control, thermal shutdown, and cycle-by-cycle current limiting - all critical for reliable off-line and battery-derived power designs.
Technical Context
The TL2575HV-ADJIKV implements a monolithic step-down (buck) topology with internal NPN power switch, fixed 52-kHz oscillator, and built-in cycle-by-cycle current limiting. Its error amplifier compares the resistor-divided output voltage against a precise 1.23-V bandgap reference to regulate output via PWM duty cycle adjustment.
Thermal shutdown activates at 150°C junction temperature, and the ON/OFF pin enables TTL-compatible shutdown with 50-μA standby current. The device operates across –40°C to +125°C virtual junction temperature and supports both continuous and discontinuous conduction modes depending on load and inductor selection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 1 A maximum continuous load current - sufficient for mid-power industrial rails without external pass devices |
| Input voltage range | 4.75 V to 60 V - supports 48-V telecom, 36-V battery systems, and unregulated rectified AC inputs |
| Output voltage range | 1.23 V to 57 V - set externally via two resistors; 1.23-V reference enables low-voltage or high-voltage outputs |
| Regulation accuracy | ±4% over line, load, and temperature - ensures stable output under varying input and load conditions |
| Oscillator frequency | 52 kHz typical (42–63 kHz range) - fixed frequency simplifies EMI filtering and inductor selection |
| Standby current | 50 μA typical - enables low-power shutdown mode for energy-sensitive applications |
| Protection features | Thermal shutdown + cycle-by-cycle current limiting - prevents damage during overload or fault conditions |
Pinout & Package
TL2575HV-ADJIKV is packaged in the TO-220 (KV) 5-pin staggered-lead package (10.16 mm × 8.82 mm body), with pins 1 (VIN), 2 (OUTPUT), 3 (GND), 4 (FEEDBACK), and 5 (ON/OFF). Pin 3 (GND) serves as thermal and electrical reference; pin 2 (OUTPUT) carries full 1-A switched current; pin 4 (FEEDBACK) connects to resistor divider for output programming.
| 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) | Regulated DC output node | Delivers up to 1 A; connects to inductor, catch diode, and output capacitor in standard buck configuration |
| GND (Pin 3) | Power and signal ground reference | Primary thermal path and return for input/output currents; must be low-impedance PCB plane |
| FEEDBACK (Pin 4) | Output voltage sensing input | Connects between R1 and R2; 1.23-V internal reference sets VOUT = 1.23 × (1 + R2/R1) |
| ON/OFF (Pin 5) | Logic-controlled enable/disable input | Low (<1.2 V) enables operation; high (>2.2 V) places device in 50-μA standby mode |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1-A NPN switch | Eliminates need for external MOSFET or transistor - reduces BOM count and layout complexity |
| Fixed 52-kHz oscillator | Enables predictable EMI profile and consistent inductor sizing across designs |
| Internal frequency compensation | Allows stable loop response with only four external components - no external compensation network required |
| TTL-compatible ON/OFF control | Supports microcontroller-driven power sequencing and system-level sleep/wake coordination |
| Cycle-by-cycle current limiting | Prevents switch overcurrent during startup, short-circuit, or transient overload - improves reliability |
Applications
| Industrial Motor Drive Power | Grid Infrastructure Monitoring |
|---|---|
Use Scenario: Powering gate drivers, sensors, and MCU cores in variable-frequency motor drives operating from 24–48 V DC bus. IC Role / Device Role / Timing Role: Primary buck regulator converting unregulated bus voltage to stable 3.3 V or 5 V for digital control circuitry. Use Value: 60 V input rating tolerates bus transients; ±4% regulation maintains logic-level integrity across temperature and load swings. | Use Scenario: Supplying isolated data acquisition modules in smart grid meters and RTUs exposed to wide ambient temperatures. IC Role / Device Role / Timing Role: Off-line DC-DC stage stepping down rectified AC or battery backup to 5 V for ADCs and communication ICs. Use Value: –40°C to +125°C operation ensures reliability in outdoor enclosures; thermal shutdown prevents field failures. |
| Factory Automation I/O Modules | Building Management Systems |
Use Scenario: Generating auxiliary 12 V or 15 V rails for analog sensor interfaces and relay drivers in PLC backplanes. IC Role / Device Role / Timing Role: Adjustable-output buck converter configured for precise 12 V output using external resistor divider. Use Value: 1.23-V reference enables accurate, temperature-stable output setting; 1-A capacity supports multiple downstream loads. | Use Scenario: Powering HVAC controllers and environmental sensors deployed in commercial buildings with fluctuating 24 VAC-derived DC rails. IC Role / Device Role / Timing Role: High-input buck regulator accepting rectified 24 VAC (up to ~34 V peak) and delivering regulated 5 V for microcontrollers. Use Value: 60 V absolute max rating provides margin against line surges; 52-kHz switching avoids audible noise in occupied spaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2575HV-ADJ | Same 1-A, 60-V input, adjustable architecture; lower efficiency (typ. 75–85%) and higher quiescent current (8 mA vs. 5–10 mA) | Lacks cycle-by-cycle current limiting; uses older control architecture with less precise line/load regulation | Preferred where legacy design reuse or cost sensitivity outweighs need for tighter regulation and fast fault response |
| TPS54202DDCR | 2-A synchronous buck; 3–28 V input; 500-kHz switching; integrated high/low-side FETs; no external diode needed | Requires different layout, smaller inductors, and lacks 60-V input capability - unsuitable for high-voltage industrial inputs | Selected when higher efficiency (>90%), smaller solution size, and lower EMI are prioritized over HV input support |
Compared with LM2575HV-ADJ, TL2575HV-ADJIKV offers superior regulation accuracy and real-time current limiting; versus TPS54202DDCR, it trades higher integration and frequency for essential 60-V input tolerance and proven ruggedness in harsh environments.
Availability
TL2575HV-ADJIKV is available at Aetrix Electronics and suitable for industrial motor drives, grid infrastructure monitoring, factory automation I/O modules, and building management systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for TL2575HV-ADJIKV 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 company specializing in analog, embedded processing, and power management technologies, with leadership in high-reliability industrial and automotive solutions.
The TL2575HV product line delivers rugged, easy-to-use buck regulators targeting industrial power conversion where wide input range, thermal resilience, and minimal external component count are critical design requirements.
FAQ
What is the maximum input voltage supported by TL2575HV-ADJIKV?
The TL2575HV-ADJIKV supports a maximum input voltage of 60 V, as specified in its Absolute Maximum Ratings. This high input rating allows direct use with 48-V battery systems, rectified 40-VAC sources, and other high-voltage industrial supplies without pre-regulation. Operation above 60 V risks permanent damage, and recommended operating conditions specify 4.75 V to 60 V for reliable long-term performance.
How is the output voltage set on TL2575HV-ADJIKV?
The output voltage of TL2575HV-ADJIKV is set externally using two resistors connected to the FEEDBACK pin. With an internal 1.23-V reference, VOUT = 1.23 V × (1 + R2/R1), where R1 connects from FEEDBACK to GND and R2 connects from OUTPUT to FEEDBACK. TL2575HV-ADJIKV supports outputs from 1.23 V to 57 V; resistor values must be chosen to maintain feedback bias current below 500 nA across temperature.
Does TL2575HV-ADJIKV require an external catch diode?
Yes, TL2575HV-ADJIKV requires an external Schottky catch diode connected from OUTPUT to GND. The internal NPN switch does not integrate a synchronous rectifier, so the diode provides the freewheeling path during switch-off. TI recommends low-forward-voltage Schottky diodes (e.g., 1N5819) placed close to the IC to minimize noise and voltage spikes - standard PN diodes are unsuitable due to slow recovery and high losses.
What protection features are built into TL2575HV-ADJIKV?
TL2575HV-ADJIKV integrates thermal shutdown (activates at 150°C junction temperature), cycle-by-cycle current limiting (limits peak switch current to ~3.6 A), and overcurrent foldback under sustained overload. It also includes safe-start behavior during input ramp-up and internal reset logic to prevent latch-up. These protections operate autonomously without external circuitry, ensuring robust operation in industrial environments with variable loads and ambient conditions.
Can TL2575HV-ADJIKV be used in discontinuous conduction mode (DCM)?
Yes, TL2575HV-ADJIKV operates naturally in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), depending on load, input voltage, and inductor value. At light loads (~200 mA or less), the inductor current falls to zero each cycle, entering DCM - which is fully supported and stable. DCM reduces light-load losses and simplifies inductor selection but increases output voltage ripple slightly compared to CCM.
TL2575HV-ADJIKV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-220-5 Formed Leads
- Packaging:
- Bulk
- 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:
- TO-220-5
TL2575HV-ADJIKV FAQ
1.How can I place an order for TL2575HV-ADJIKV through Aetrix?
Please submit a Request for Quotation (RFQ) for TL2575HV-ADJIKV 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-ADJIKV reliable?
The price and inventory of TL2575HV-ADJIKV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL2575HV-ADJIKV is usually 5 days.
3.What payment methods are accepted for TL2575HV-ADJIKV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL2575HV-ADJIKV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL2575HV-ADJIKV?
TL2575HV-ADJIKV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL2575HV-ADJIKV 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-ADJIKV?
For technical support, including TL2575HV-ADJIKV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL2575HV-ADJIKV requirements.
6.How does Aetrix verify that TL2575HV-ADJIKV is sourced from the original manufacturer or authorized distributors?
All TL2575HV-ADJIKV 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-ADJIKV meets industry standards.
7.What is the process for return or replacement of TL2575HV-ADJIKV?
All TL2575HV-ADJIKV units undergo pre-shipment inspection (PSI). If there is an issue with TL2575HV-ADJIKV, 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-ADJIKV part is unused and in its original packaging.
Return procedure for TL2575HV-ADJIKV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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