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Texas Instruments TL2575-05IKV
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- Part No.:
- TL2575-05IKV
- Manufacturer:
- Texas Instruments
- Package:
- TO-220-5 Formed Leads
- Datasheet:
-
TL2575-05IKV.pdf
- Description:
- IC REG BUCK 5V 1A TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,370
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Product details
Overview
TL2575-05IKV from Texas Instruments is a fixed-output 5-V, 1-A step-down (buck) switching voltage regulator in TO-220 staggered-lead package. It delivers ±5% output regulation over line, load, and temperature, operates from 8 V to 40 V input, features 52-kHz fixed-frequency internal oscillator, and supports TTL shutdown with 50-μA standby current. It is used in industrial power supplies requiring compact, efficient DC-DC conversion.
For engineers reviewing the TL2575-05IKV datasheet, TL2575-05IKV pinout, TL2575-05IKV application, or TL2575-05IKV equivalent, key selection criteria include input voltage range (8–40 V), guaranteed 1-A output capability, thermal shutdown and cycle-by-cycle current limiting, and compatibility with standard off-the-shelf inductors and Schottky diodes.
Technical Context
The TL2575-05IKV integrates a 1-A N-channel MOSFET switch, fixed-gain error amplifier, 1.23-V bandgap reference, and 52-kHz oscillator to implement a complete synchronous-buck controller without external timing components. Its feedback loop is internally compensated and requires only a single resistor divider for adjustable versions - but for TL2575-05IKV, FEEDBACK is internally tied to OUTPUT to maintain fixed 5-V regulation.
It employs cycle-by-cycle current limiting and thermal shutdown for fault protection, and its ON/OFF pin accepts TTL/CMOS logic levels to enable or disable switching operation. Standby mode draws just 50 μA typical, while quiescent current in active operation is 5–10 mA across –40°C to 125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±5% over full line/load/temperature range - ensures stable rail for microcontrollers and analog circuitry without external adjustment. |
| Max Output Current | 1 A continuous - supports moderate-power loads such as sensors, actuators, and interface ICs without external current boosting. |
| Input Voltage Range | 8 V to 40 V - accommodates wide industrial DC bus voltages including 12-V, 24-V, and 36-V systems with margin. |
| Oscillator Frequency | 52 kHz typical (42–63 kHz over temp) - enables use of low-cost, high-saturation-current inductors and reduces EMI compared to MHz-range converters. |
| Standby Quiescent Current | 50 μA typical at 25°C - minimizes system-level power loss during sleep or idle states in battery-backed or energy-sensitive applications. |
| Efficiency | 77% typical at VIN = 12 V, IOUT = 1 A - reduces thermal load versus linear regulators, often eliminating need for heatsink in ambient ≤60°C. |
| Protection Features | Thermal shutdown + cycle-by-cycle current limiting - prevents damage under overload, short-circuit, or high-temperature conditions without external circuitry. |
Pinout & Package
TL2575-05IKV is housed in the KV (TO-220 staggered leads) package, 10.16 mm × 8.82 mm body, with exposed tab electrically connected to GND for thermal conduction and mechanical mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power Input | Unregulated DC input supply connection; must be decoupled with ≥47 µF electrolytic capacitor near the pin. |
| OUTPUT (Pin 2) | Regulated Output | 5-V switched output node; connects to output inductor, catch diode anode, and output capacitor positive terminal. |
| GND (Pin 3) | Ground Reference | Primary power and signal ground; ties to exposed tab; must be low-impedance path to minimize noise and thermal resistance. |
| FEEDBACK (Pin 4) | Regulation Sense | Internally connected to OUTPUT for fixed 5-V operation; not user-accessible - no external resistor required. |
| ON/OFF (Pin 5) | Enable Control | TTL-compatible shutdown input; <1.2 V enables regulation, >2.2 V disables switching and enters 50-μA standby mode. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 5-V output with ±5% tolerance | Eliminates external feedback resistors and associated layout sensitivity - simplifies BOM and improves production yield. |
| Integrated 1-A power switch | Reduces external component count to just four: input cap, output cap, inductor, and Schottky diode - accelerates design cycle. |
| 52-kHz fixed-frequency operation | Enables predictable EMI filtering and compatibility with low-cost, high-current toroidal or bobbin-core inductors (e.g., 330 µH). |
| TTL-compatible ON/OFF control | Allows direct interfacing with microcontroller GPIO or system-level power sequencing logic without level-shifting circuitry. |
| Internal frequency compensation | Guarantees stable loop response with standard aluminum electrolytic output capacitors - avoids complex compensation design. |
Applications
| Industrial Motor Drive Power | Factory Automation Controller Supply |
|---|---|
Use Scenario: Powers logic and gate drivers in 24-V DC motor control modules where space and heat dissipation are constrained. IC Role / Device Role / Timing Role: Primary 5-V buck regulator delivering clean, regulated rail for MCU, encoder interface, and half-bridge drivers. Use Value: Replaces linear regulators to cut power loss by >70%, enabling fanless enclosure design and reducing PCB area by eliminating heatsinks. |
Use Scenario: Supplies 5-V rail to PLC I/O modules operating from 24-V industrial bus with frequent brownouts and surges. IC Role / Device Role / Timing Role: Main DC-DC converter providing robust, protected 5-V output with built-in current limiting and thermal shutdown. Use Value: Withstands 40-V transients and maintains regulation down to 8-V input - ensures uptime during bus dips without system reset. |
| Grid Infrastructure Monitoring Unit | Building Automation Sensor Hub |
Use Scenario: Powers remote RTU electronics in outdoor substations exposed to –40°C to +85°C ambient and wide input fluctuations. IC Role / Device Role / Timing Role: Fixed-output buck regulator generating stable 5-V supply for communication ICs and ADC front-ends. Use Value: Specified for –40°C to +125°C junction operation and maintains ±5% regulation across temperature - ensures data integrity in harsh environments. |
Use Scenario: Supplies 5-V rail to wireless sensor nodes (Zigbee/Bluetooth) in HVAC control panels with limited airflow and thermal mass. IC Role / Device Role / Timing Role: Efficient step-down regulator enabling long battery life via low 50-μA standby current when radio is inactive. Use Value: Reduces average system power by >90% versus linear alternatives during sleep cycles - extends battery replacement interval to 5+ years. |
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 5-V fixed output, 1-A rating, and TO-220 package, but lower max input (40 V vs. TL2575-05IKV's 40 V); identical oscillator (52 kHz) and protection features. | No functional difference in 5-V fixed applications; LM2575-5.0 uses same external component values and layout. | Drop-in alternative if LM2575-5.0 is already qualified; TL2575-05IKV offers identical performance with TI's updated manufacturing and support. |
| MP1584EN-LF-Z | Higher switching frequency (1.5 MHz), smaller external components, but rated for only 3 A peak (not continuous 1 A); requires external compensation. | Suitable for space-constrained designs needing compact inductors/caps, but less tolerant of high-temp or high-ripple environments than TL2575-05IKV. | Prefer TL2575-05IKV for industrial reliability and thermal robustness; choose MP1584EN-LF-Z only when board area is critical and input ripple is well-filtered. |
Compared with LM2575-5.0, TL2575-05IKV provides identical electrical behavior and pinout but benefits from TI's extended product lifecycle and enhanced thermal characterization; versus MP1584EN-LF-Z, TL2575-05IKV trades higher-frequency efficiency for superior ruggedness, simpler design, and proven field reliability in harsh environments.
Availability
TL2575-05IKV is available at Aetrix Electronics and suitable for industrial motor drives, factory automation controllers, grid infrastructure monitoring units, and building automation sensor hubs requiring stable component supply with long-term manufacturability.
Supply support for TL2575-05IKV 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 experience in industrial-grade power solutions.
The TL2575 family was designed specifically for cost-sensitive, high-reliability industrial buck conversion - emphasizing simplicity, thermal resilience, and minimal external component count in TO-220 and surface-mount packages.
FAQ
What is the maximum input voltage rating for TL2575-05IKV?
The TL2575-05IKV has an absolute maximum input voltage of 42 V and a recommended operating range of 8 V to 40 V. Exceeding 40 V continuously risks violating safe operating area limits, especially at elevated temperatures; transient spikes up to 42 V are tolerated briefly per absolute maximum ratings, but sustained operation above 40 V is not advised. The TL2575HV variant supports up to 60 V, but TL2575-05IKV is not rated for that range.
Does TL2575-05IKV require external feedback resistors?
No, TL2575-05IKV does not require external feedback resistors. As a fixed-output variant, its internal feedback network is permanently configured for 5 V, and the FEEDBACK pin (Pin 4) is internally connected to the OUTPUT pin. External resistor connections are unnecessary and would disrupt regulation - the device is designed for plug-and-play operation with only VIN, GND, OUTPUT, and ON/OFF pins actively used.
What is the thermal resistance (RθJA) of TL2575-05IKV in TO-220 package?
The TL2575-05IKV in the KV (TO-220 staggered leads) package has a junction-to-ambient thermal resistance (RθJA) of 26.5°C/W when mounted on a 1-in² copper pad with 2 oz copper thickness. This value assumes standard JEDEC test conditions; actual thermal performance depends on PCB layout, heatsinking, and airflow. The exposed tab is internally connected to GND and must be soldered to a thermal pad for optimal heat transfer.
Can TL2575-05IKV be used in discontinuous conduction mode (DCM)?
Yes, TL2575-05IKV automatically transitions into discontinuous conduction mode (DCM) under light-load conditions (typically below ~200 mA). Its control architecture supports both continuous and discontinuous modes without instability or regulation loss. DCM operation reduces switching losses at light loads and is fully characterized across temperature - no design changes or component adjustments are needed to accommodate this behavior.
What type of diode is recommended for use with TL2575-05IKV?
A Schottky diode is strongly recommended for TL2575-05IKV, such as the 1N5819 or equivalent, due to its low forward voltage (≤0.5 V) and fast recovery. This minimizes conduction loss and improves efficiency - especially critical at 5-V output where diode drop represents a significant portion of VOUT. Fast-recovery diodes may be used if Schottky is unavailable, but must exhibit soft recovery characteristics to avoid EMI and loop instability.
TL2575-05IKV 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):
- 5V
- 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
TL2575-05IKV FAQ
1.How can I place an order for TL2575-05IKV through Aetrix?
Please submit a Request for Quotation (RFQ) for TL2575-05IKV 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 TL2575-05IKV reliable?
The price and inventory of TL2575-05IKV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL2575-05IKV is usually 5 days.
3.What payment methods are accepted for TL2575-05IKV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL2575-05IKV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL2575-05IKV?
TL2575-05IKV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL2575-05IKV 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 TL2575-05IKV?
For technical support, including TL2575-05IKV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL2575-05IKV requirements.
6.How does Aetrix verify that TL2575-05IKV is sourced from the original manufacturer or authorized distributors?
All TL2575-05IKV 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 TL2575-05IKV meets industry standards.
7.What is the process for return or replacement of TL2575-05IKV?
All TL2575-05IKV units undergo pre-shipment inspection (PSI). If there is an issue with TL2575-05IKV, 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 TL2575-05IKV part is unused and in its original packaging.
Return procedure for TL2575-05IKV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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