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Texas Instruments TL2575-05IKTTRG3
- Part No.:
- TL2575-05IKTTRG3
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
TL2575-05IKTTRG3.pdf
- Description:
- IC REG BUCK 5V 1A TO263
- Quantity:
- Payment:
- Shipping:
Inventory:504
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Product details
Overview
TL2575-05IKTTRG3 from Texas Instruments is a fixed-output 5-V, 1-A step-down (buck) switching voltage regulator in TO-263-5 package. It operates from 8 V to 40 V input, delivers ±5% output regulation over line/load/temperature, and integrates a 52-kHz oscillator, thermal shutdown, and cycle-by-cycle current limiting. It powers industrial control logic rails requiring compact, efficient DC-DC conversion.
For engineers reviewing the TL2575-05IKTTRG3 datasheet, TL2575-05IKTTRG3 pinout, TL2575-05IKTTRG3 application, or TL2575-05IKTTRG3 equivalent, key selection criteria include its 5-V fixed output, 1-A continuous load capability, ON/OFF shutdown interface, thermal protection behavior, and compatibility with standard 330-µH inductors and aluminum electrolytic capacitors.
Technical Context
The TL2575-05IKTTRG3 implements a monolithic buck converter architecture with internal NPN power switch, fixed-frequency PWM control (52 kHz typical), and integrated error amplifier referenced to a 1.23-V bandgap. Its feedback loop is internally compensated and requires no external compensation components for stable operation with standard output capacitors.
It supports manual enable/disable via TTL-compatible ON/OFF pin (VIH ≥ 2.2 V, VIL ≤ 1.2 V), draws only 50 µA standby current when disabled, and features cycle-by-cycle current limiting (3.6 A peak), thermal shutdown at 150°C junction temperature, and built-in soft-start via internal current limit ramp.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±5% (4.75–5.25 V) across –40°C to 125°C, 0.2–1 A load, 8–40 V input |
| Max Output Current | 1 A continuous; limited by internal switch and thermal design - requires heatsinking above ~600 mA in still air |
| Input Voltage Range | 8 V to 40 V - supports 12/24/36-V industrial bus rails without pre-regulation |
| Switching Frequency | 52 kHz typical (42–63 kHz over temp) - enables use of low-cost, high-saturation-current inductors |
| Efficiency | Up to 88% at 12 VIN/5 VOUT/1 A - reduces thermal load vs. linear regulators and eliminates need for large heatsinks |
| Standby Current | 50 µA typical when ON/OFF pin = high - enables low-power sleep modes in battery-backed systems |
| Thermal Shutdown | Activates at 150°C junction temperature - protects device during overload or poor PCB thermal design |
Pinout & Package
TL2575-05IKTTRG3 uses the KTT (TO-263-5) thermally enhanced surface-mount package (10.16 mm × 8.93 mm, 2.4 mm height), with exposed thermal pad connected to GND for improved heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Unregulated DC input supply | Accepts 8–40 V; requires local 100-µF electrolytic bypass capacitor placed adjacent to pin |
| OUTPUT (Pin 2) | Regulated 5-V output node | Drives 1-A load; connects to catch diode anode and output inductor; sensitive to layout parasitics |
| GND (Pin 3) | Power and signal reference ground | Common return for input cap, output cap, and thermal pad; must be low-impedance plane |
| FEEDBACK (Pin 4) | Output voltage sensing input | Internally tied to 5-V output; not user-adjustable - open-circuit or misconnection causes regulation failure |
| ON/OFF (Pin 5) | Enable/disable control input | Logic-low (≤1.2 V) enables operation; logic-high (≥2.2 V) disables switch and reduces IQ to 50 µA |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1-A NPN switch | Eliminates external MOSFET and gate driver - reduces BOM count and layout complexity |
| Fixed 52-kHz oscillator | Enables predictable EMI profile and simplifies filter design vs. variable-frequency controllers |
| TTL-compatible ON/OFF pin | Allows direct interfacing with microcontrollers or logic-level signals without level-shifting circuitry |
| Cycle-by-cycle current limiting | Prevents destructive overcurrent events during short circuits or startup - limits peak switch current to 3.6 A |
| Internal frequency compensation | Supports stable operation with standard 330-µH inductors and 330-µF aluminum output capacitors - no external compensation required |
Applications
| Industrial Motor Drive Logic Supply | Factory Automation I/O Module Rail |
|---|---|
Use Scenario: Powers 5-V microcontroller, optocouplers, and digital isolators in servo drive control boards operating from 24-V DC bus. IC Role / Device Role / Timing Role: Primary 5-V buck regulator delivering regulated logic rail with fast transient response to PWM command bursts. Use Value: Replaces LM7805 linear regulator - cuts power loss by >75%, eliminates heatsink, and maintains regulation under 1-A pulsed loads. | Use Scenario: Supplies 5-V power to PLC digital input/output channel ASICs and level translators in DIN-rail mounted I/O modules. IC Role / Device Role / Timing Role: Fixed-output DC-DC converter providing isolated logic rail with thermal shutdown for field-side fault protection. Use Value: Withstands 40-V transients on 24-V supply rail; maintains regulation during brownouts down to 8 V input; supports hot-swap insertion. |
| Grid Infrastructure RTU Power | Building Management System Sensor Hub |
Use Scenario: Generates 5-V supply for remote terminal unit (RTU) processors and communication ICs in outdoor substation monitoring cabinets. IC Role / Device Role / Timing Role: Main system regulator converting wide-range 12–36-V backup battery or PoE-derived input to stable 5-V logic rail. Use Value: Operates across –40°C to 125°C junction range; withstands 40-V surges per IEC 61000-4-5; enables fanless enclosure design. | Use Scenario: Powers 5-V sensor fusion MCU, analog front-end, and Zigbee/Wi-Fi transceivers in HVAC zone controllers with 24-V AC/DC input. IC Role / Device Role / Timing Role: Efficient step-down regulator enabling low-quiescent operation during occupancy-sensing sleep cycles. Use Value: 50-µA standby current extends battery backup runtime; ON/OFF pin allows MCU-controlled deep-sleep entry/exit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2575-5.0 | Same pinout, identical 5-V fixed output, but lower max input (40 V vs. TL2575-05's 40 V), same 1-A rating, 52-kHz freq, and thermal shutdown - however, LM2575 lacks ON/OFF pin and has higher quiescent current (11 mA vs. 5 mA active, 50 µA standby) | No enable control; unsuitable where MCU-governed power sequencing or low-power sleep is required | Select TL2575-05IKTTRG3 when ON/OFF functionality, lower active IQ, or TI's extended lifetime support is needed |
| MP1584EN-LF-Z | Adjustable output (1.23–28 V), 3-A rating, 1.5-MHz switching, smaller SOIC-8 package - no ON/OFF pin, different pinout, requires external feedback resistors and compensation | Higher current and frequency, but fixed 5-V operation requires resistor network and adds design overhead | Choose MP1584EN-LF-Z only if >1-A load, space constraints, or higher efficiency at light loads justify redesign effort |
Compared with LM2575-5.0, TL2575-05IKTTRG3 adds critical ON/OFF control and cuts active quiescent current by >50%; versus MP1584EN-LF-Z, it offers plug-and-play 5-V operation with zero external feedback components but trades off current headroom and switching frequency.
Availability
TL2575-05IKTTRG3 is available at Aetrix Electronics and suitable for industrial motor drives, factory automation I/O modules, and grid infrastructure RTUs requiring stable component supply, long-lifecycle assurance, and traceable sourcing.
Supply support for TL2575-05IKTTRG3 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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management ICs for industrial, automotive, and communications markets.
TL2575-05IKTTRG3 belongs to TI's legacy buck regulator product line designed for cost-sensitive, high-reliability industrial power conversion - emphasizing simplicity, thermal robustness, and minimal external component count.
FAQ
What is the maximum input voltage rating for TL2575-05IKTTRG3?
The absolute maximum input voltage for TL2575-05IKTTRG3 is 42 V, with recommended operating range from 8 V to 40 V. Exceeding 42 V risks permanent damage. The device is rated for continuous operation up to 40 V input, making it suitable for 24-V and 36-V industrial bus systems with margin for transients.
Does TL2575-05IKTTRG3 require external feedback resistors to set its output voltage?
No, TL2575-05IKTTRG3 is a fixed 5-V output variant and does not require external feedback resistors. Its FEEDBACK pin is internally connected to the 5-V output; connecting external resistors will disrupt regulation. Only adjustable versions (e.g., TL2575-ADJ) use external R1/R2 networks.
How does the ON/OFF pin function on TL2575-05IKTTRG3?
The ON/OFF pin on TL2575-05IKTTRG3 enables logic-level control: grounding or applying ≤1.2 V activates regulation; applying ≥2.2 V disables the internal switch and reduces quiescent current to 50 µA typical. The pin must never be left floating - tie to GND or VIN via pull-down/pull-up resistor if unused.
What thermal considerations apply to TL2575-05IKTTRG3 in TO-263-5 package?
TL2575-05IKTTRG3 in TO-263-5 has RθJA = 26.5°C/W. At 1-A load and 40-V input, power dissipation exceeds 3 W - requiring a minimum 250 mm² copper pour on top layer connected to the exposed thermal pad. Thermal shutdown triggers at 150°C junction temperature; derate output current above 85°C ambient unless heatsinking is enhanced.
Can TL2575-05IKTTRG3 replace a 7805 linear regulator directly?
No direct drop-in replacement: TL2575-05IKTTRG3 is a switching regulator requiring four external components (input cap, output cap, inductor, catch diode), whereas the 7805 needs only two caps. However, it replaces 7805 in applications needing >150 mA load, where efficiency and thermal performance are critical - with proper layout and component selection, it delivers superior regulation and reliability.
TL2575-05IKTTRG3 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.75V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- 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)
TL2575-05IKTTRG3 FAQ
1.How can I place an order for TL2575-05IKTTRG3 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL2575-05IKTTRG3 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 TL2575-05IKTTRG3 reliable?
The price and inventory of TL2575-05IKTTRG3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL2575-05IKTTRG3 is usually 5 days.
3.What payment methods are accepted for TL2575-05IKTTRG3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL2575-05IKTTRG3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL2575-05IKTTRG3?
TL2575-05IKTTRG3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL2575-05IKTTRG3 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 TL2575-05IKTTRG3?
For technical support, including TL2575-05IKTTRG3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL2575-05IKTTRG3 requirements.
6.How does Aetrix verify that TL2575-05IKTTRG3 is sourced from the original manufacturer or authorized distributors?
All TL2575-05IKTTRG3 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 TL2575-05IKTTRG3 meets industry standards.
7.What is the process for return or replacement of TL2575-05IKTTRG3?
All TL2575-05IKTTRG3 units undergo pre-shipment inspection (PSI). If there is an issue with TL2575-05IKTTRG3, 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 TL2575-05IKTTRG3 part is unused and in its original packaging.
Return procedure for TL2575-05IKTTRG3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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