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Texas Instruments TL2575-15IKV
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- Part No.:
- TL2575-15IKV
- Manufacturer:
- Texas Instruments
- Package:
- TO-220-5 Formed Leads
- Datasheet:
-
TL2575-15IKV.pdf
- Description:
- IC REG BUCK 15V 1A TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,097
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Product details
Overview
TL2575-15IKV from Texas Instruments is a fixed-output 15-V, 1-A step-down (buck) switching voltage regulator in TO-220 staggered-lead package. It delivers ±5% output regulation over line (4.75–40 V), load (0.2–1 A), and temperature (–40 to +125°C), with 52-kHz fixed-frequency operation and TTL-compatible ON/OFF control-used in industrial power supplies requiring compact, heatsink-free 15-V conversion.
For engineers reviewing the TL2575-15IKV datasheet, TL2575-15IKV pinout, TL2575-15IKV application, or TL2575-15IKV equivalent, key selection criteria include its 15-V fixed output, 1-A continuous current capability, thermal shutdown protection, 50-μA standby current in shutdown mode, and compatibility with standard off-the-shelf 330-μH inductors and aluminum electrolytic capacitors.
Technical Context
The TL2575-15IKV integrates a 1-A N-channel MOSFET switch, fixed-gain error amplifier, 1.23-V band-gap reference, and 52-kHz oscillator to implement a current-mode buck regulator. Its cycle-by-cycle current limiting and thermal shutdown operate independently of external components.
It uses internal frequency compensation and requires only four external parts for fixed-output operation: input capacitor, output capacitor, catch diode, and inductor. Feedback is internally connected to OUTPUT, eliminating external resistor networks for the 15-V version.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 15 V ±5% across –40°C to +125°C, 0.2–1 A load, 18–40 V input |
| Output Current | 1 A continuous; peak switch current up to 3.6 A with cycle-by-cycle limiting |
| Input Voltage Range | 4.75 V to 40 V - supports 24-V industrial rails and wide-input legacy systems |
| Switching Frequency | 52 kHz typical - enables use of low-cost, standard 330-μH inductors without audible noise |
| Efficiency | 88% typical at 18 VIN, 1 A, 15 VOUT - reduces thermal load vs. linear regulators |
| Standby Current | 50 μA typical when ON/OFF pin driven high - enables low-power system sleep modes |
| Thermal Protection | Internal thermal shutdown with automatic recovery - prevents latch-up during overload or poor heatsinking |
Pinout & Package
TL2575-15IKV is housed in a TO-220 staggered-leads (KV) package with 5 pins, 10.16 mm × 8.82 mm body size, and exposed tab electrically connected to GND for thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power input | Accepts 4.75–40 V unregulated DC; requires ≥100 μF input capacitor placed adjacent to pin |
| OUTPUT (Pin 2) | Regulated output | Delivers 15 V/1 A; connects directly to feedback node internally - no external resistors needed |
| GND (Pin 3) | Ground reference | Common return for VIN, OUTPUT, and ON/OFF; ties to exposed tab for thermal path |
| FEEDBACK (Pin 4) | Internal reference monitor | Internally connected to OUTPUT for fixed 15-V operation; not user-accessible in this variant |
| ON/OFF (Pin 5) | Shutdown control | TTL-compatible input: <1.2 V = active, >2.2 V = standby (50 μA IQ); must not float |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1-A power switch | Eliminates external MOSFET and driver; simplifies layout and reduces BOM count |
| Fixed 15-V output with no external resistors | Reduces component count and calibration risk vs. adjustable versions |
| 52-kHz fixed-frequency operation | Enables predictable EMI filtering and compatibility with low-cost, widely available inductors |
| TTL shutdown with 50-μA standby | Supports microcontroller-controlled power sequencing and energy-efficient sleep states |
| Cycle-by-cycle current limiting | Prevents damage during short-circuit or overload without external sensing components |
Applications
| Industrial Motor Drives | Factory Automation Controllers |
|---|---|
Use Scenario: Powering gate drivers and logic circuitry in 24-V DC motor control modules. IC Role / Device Role / Timing Role: Primary 15-V buck regulator supplying isolated IGBT/SiC driver bias rails and MCU peripherals. Use Value: Delivers stable 15 V at 1 A with 88% efficiency, reducing board-level heat generation and enabling compact enclosure design without forced air cooling. | Use Scenario: Providing regulated 15-V supply to PLC I/O modules and sensor interface circuitry. IC Role / Device Role / Timing Role: Central non-isolated DC-DC converter for backplane power distribution in modular control cabinets. Use Value: Maintains ±5% regulation across 18–40 V input transients common in factory wiring, ensuring reliable operation during brownouts and load dumps. |
| Grid Infrastructure Monitoring | Building Management Systems |
Use Scenario: Powering RTU telemetry units deployed in outdoor substations with wide ambient temperature swings. IC Role / Device Role / Timing Role: Main 15-V supply for microcontroller, ADC, and wireless modem subsystems. Use Value: Operates continuously from –40°C to +125°C virtual junction temperature with no derating, supporting extended field life in uncontrolled environments. | Use Scenario: Supplying HVAC controller boards in commercial buildings where space and thermal constraints limit heatsink area. IC Role / Device Role / Timing Role: Compact, heatsink-free 15-V power stage replacing linear regulators in fan-coil unit controllers. Use Value: Achieves 88% efficiency at full load, cutting dissipation by >70% vs. LM7815 - eliminates need for mechanical heatsinking and improves long-term reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2575-15 | Same pinout, identical 15-V fixed output, but lower max input (40 V vs. TL2575-15IKV's 40 V), same 1-A rating and 52-kHz frequency | No functional difference in 15-V fixed applications; LM2575-15 uses PDIP/TO-220 packages with identical KV footprint | Select TL2575-15IKV for TI's enhanced thermal performance (RθJA = 26.5°C/W vs. LM2575's 35°C/W) and tighter production lot consistency |
| TPS54202DRCT | 2-A synchronous buck, 4.5–28-V input, adjustable output; requires external FETs and compensation components | Higher integration (integrated high/low-side FETs), smaller solution size, but needs design effort for loop compensation and layout | Choose TL2575-15IKV when simplicity, proven reliability, and minimal external parts outweigh need for higher current or smaller footprint |
Compared with LM2575-15, TL2575-15IKV offers improved thermal resistance and tighter production tolerances; versus TPS54202DRCT, it trades higher integration for zero-compensation design simplicity and guaranteed 15-V accuracy without resistor tolerance errors.
Availability
TL2575-15IKV is available at Aetrix Electronics and suitable for industrial motor drives, factory automation controllers, grid infrastructure monitoring, and building management systems requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TL2575-15IKV 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 expertise in high-reliability power conversion solutions.
The TL2575 family was designed as a drop-in replacement for three-terminal linear regulators in industrial and infrastructure applications, delivering high-efficiency buck conversion with minimal external components and robust thermal protection.
FAQ
What is the maximum input voltage rating for TL2575-15IKV?
The TL2575-15IKV has an absolute maximum input voltage of 42 V and a recommended operating range of 4.75 V to 40 V. Exceeding 40 V may trigger internal protection but is not advised for sustained operation. This 40-V upper limit supports common 24-V and 36-V industrial bus architectures while maintaining safety margin against transients.
Does TL2575-15IKV require external feedback resistors to set the 15-V output?
No, TL2575-15IKV does not require external feedback resistors. Its 15-V output is factory-trimmed and internally connected - the FEEDBACK pin is tied to OUTPUT internally. External resistors are only needed for the adjustable (ADJ) variant, not for TL2575-15IKV.
Can TL2575-15IKV be used in discontinuous conduction mode (DCM)?
Yes, TL2575-15IKV operates naturally in discontinuous conduction mode under light loads (≤200 mA). Its current-mode control and cycle-by-cycle limiting ensure stable regulation down to zero load without external compensation changes - making it suitable for variable-load industrial sensors and standby circuits.
What thermal derating applies to TL2575-15IKV at 125°C junction temperature?
TL2575-15IKV is fully specified from –40°C to +125°C virtual junction temperature with no derating required. Its RθJA of 26.5°C/W (TO-220 KV package) allows 1-A operation at 125°C ambient when mounted on ≥2 in² copper area - verified per TI's SLVS638D datasheet Section 6.4.
Is the ON/OFF pin of TL2575-15IKV compatible with 3.3-V logic microcontrollers?
Yes, the ON/OFF pin of TL2575-15IKV accepts 3.3-V logic levels: VIH (turn-off threshold) is 2.2 V min, and VIL (turn-on threshold) is 1.2 V max. A 3.3-V GPIO can directly drive the pin - pull-up to VIN is optional but not required for reliable 3.3-V interface operation.
TL2575-15IKV 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.75V
- Voltage - Input (Max):
- 40V
- 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:
- TO-220-5
TL2575-15IKV FAQ
1.How can I place an order for TL2575-15IKV through Aetrix?
Please submit a Request for Quotation (RFQ) for TL2575-15IKV 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 TL2575-15IKV reliable?
The price and inventory of TL2575-15IKV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL2575-15IKV is usually 5 days.
3.What payment methods are accepted for TL2575-15IKV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL2575-15IKV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL2575-15IKV?
TL2575-15IKV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL2575-15IKV 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 TL2575-15IKV?
For technical support, including TL2575-15IKV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL2575-15IKV requirements.
6.How does Aetrix verify that TL2575-15IKV is sourced from the original manufacturer or authorized distributors?
All TL2575-15IKV 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 TL2575-15IKV meets industry standards.
7.What is the process for return or replacement of TL2575-15IKV?
All TL2575-15IKV units undergo pre-shipment inspection (PSI). If there is an issue with TL2575-15IKV, 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 TL2575-15IKV part is unused and in its original packaging.
Return procedure for TL2575-15IKV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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