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Texas Instruments TL2575HV-33IKV
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- Part No.:
- TL2575HV-33IKV
- Manufacturer:
- Texas Instruments
- Package:
- TO-220-5 Formed Leads
- Datasheet:
-
TL2575HV-33IKV.pdf
- Description:
- IC REG BUCK 3.3V 1A TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,190
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Product details
Overview
TL2575HV-33IKV from Texas Instruments is a fixed-output 3.3-V, 1-A step-down (buck) switching voltage regulator with integrated 1-A power switch, 4.75–60 V wide input range, ±5% output regulation over line/load/temperature, and 52-kHz fixed-frequency operation. It delivers high-efficiency DC/DC conversion for industrial power rails requiring stable low-voltage supply under high-input conditions.
For engineers reviewing the TL2575HV-33IKV datasheet, TL2575HV-33IKV pinout, TL2575HV-33IKV application, or TL2575HV-33IKV equivalent, key selection criteria include its HV input capability (60 V max), thermal shutdown and cycle-by-cycle current limiting, TO-220 staggered-lead package with exposed tab for thermal management, and compatibility with standard off-the-shelf inductors and Schottky diodes in minimal four-component designs.
Technical Context
The TL2575HV-33IKV implements a monolithic buck converter architecture with internal 1-A N-channel MOSFET switch, fixed 52-kHz oscillator, and built-in error amplifier referenced to a 1.23-V bandgap. Its feedback loop uses direct connection of the FEEDBACK pin to OUTPUT for fixed 3.3-V operation, eliminating external resistors.
It supports manual shutdown via TTL-compatible ON/OFF pin (VIH ≥ 2.2 V, VIL ≤ 1.2 V), draws only 50 μA standby current when disabled, and incorporates cycle-by-cycle current limiting, thermal shutdown, and internal frequency compensation - enabling stable operation without external compensation components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±5% over full line (4.75–60 V), load (0.2–1 A), and temperature (–40 to +125°C) ranges - ensures reliable logic-level rail generation without trimming. |
| Input Voltage Range | 4.75 V to 60 V - supports wide-range industrial, automotive, and grid-supplied inputs including 48-V systems and transient surges. |
| Output Current | 1 A continuous - sufficient to power microcontrollers, sensors, and interface ICs without external pass devices. |
| Switching Frequency | 52 kHz typical (42–63 kHz over temp) - enables use of low-cost, high-saturation-current inductors and reduces EMI filtering complexity. |
| Efficiency | Up to 88% at 12-V input / 3.3-V output / 1-A load - minimizes thermal dissipation and eliminates heatsink in many applications. |
| Standby Current | 50 μA typical at shutdown - enables ultra-low-power system-level sleep modes. |
| Protection Features | Thermal shutdown, cycle-by-cycle current limiting, and internal soft-start - prevents damage during overload, short-circuit, or hot-plug events. |
Pinout & Package
TL2575HV-33IKV is housed in a KV (TO-220 staggered leads) package with 5 pins and an exposed metal tab thermally connected to GND. The package measures 10.16 mm × 8.82 mm and supports through-hole mounting with optional heatsinking via the tab.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Unregulated DC input | Accepts 4.75–60 V; requires local 100-μF electrolytic bypass capacitor placed adjacent to pin for stability. |
| OUTPUT (Pin 2) | Regulated 3.3-V output | Drives 1-A load; connects directly to FEEDBACK pin for fixed-output configuration; requires 330-μF output capacitor. |
| GND (Pin 3) | Power ground | Common return for input/output paths and thermal pad; must be low-impedance plane for noise control and thermal conduction. |
| FEEDBACK (Pin 4) | Voltage sense input | Internally tied to 3.3-V reference; externally connected to OUTPUT pin - no resistor divider needed for fixed version. |
| ON/OFF (Pin 5) | Shutdown control | TTL-compatible input: <1.2 V = active, >2.2 V = standby; pulls up to VIN if left unconnected; enables system-level power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1-A power switch | Eliminates external MOSFET and gate driver, reducing BOM count and layout area in compact power supplies. |
| Fixed 3.3-V output with no external resistors | Simplifies design validation and production calibration - no tolerance stack-up or layout sensitivity from feedback network. |
| Wide 4.75–60 V input range | Supports direct connection to 24-V, 36-V, and 48-V industrial buses while tolerating load-dump transients up to 60 V. |
| 52-kHz fixed-frequency operation | Enables predictable EMI spectrum and simplifies filter design using standard off-the-shelf inductors (e.g., 330 µH). |
| TTL shutdown with 50-μA standby | Allows precise system-level power gating without auxiliary LDOs or discrete FETs - critical for battery-backed or energy-harvesting systems. |
Applications
| Industrial Motor Control | Smart Grid Sensors |
|---|---|
Use Scenario: Powering MCU, gate drivers, and analog front-ends in variable-frequency drives operating from 48-V DC bus with high dv/dt noise. IC Role / Device Role / Timing Role: Primary 3.3-V buck regulator supplying core logic and communication interfaces (RS-485, CAN) with immunity to input ripple and transients. Use Value: 60-V absolute maximum input rating withstands motor regeneration spikes; thermal shutdown prevents latch-up during stall conditions. | Use Scenario: Providing isolated 3.3-V supply for wireless sensor nodes deployed on medium-voltage distribution transformers. IC Role / Device Role / Timing Role: Standalone DC/DC converter generating clean logic rail from rectified AC or capacitive-drop input with minimal external parts. Use Value: 50-μA standby current extends battery life in wake-on-event configurations; 52-kHz switching avoids interference with narrowband PLC communication bands. |
| Factory Automation I/O Modules | Building Management Systems |
Use Scenario: Powering digital isolators, ADCs, and fieldbus transceivers in DIN-rail mounted PLC I/O cards fed from 24-V DC power rails. IC Role / Device Role / Timing Role: Fixed-output buck regulator delivering regulated 3.3-V rail with high PSRR and low output impedance across 0–1-A load steps. Use Value: ±5% regulation ensures reliable operation of precision SAR ADCs and Ethernet PHYs even under varying bus loading and ambient temperature shifts. | Use Scenario: Supplying HVAC controllers, occupancy sensors, and DALI lighting interfaces in commercial buildings with centralized 24–48-V DC distribution. IC Role / Device Role / Timing Role: High-reliability point-of-load regulator supporting long-life deployments where maintenance access is limited. Use Value: TO-220 package with exposed GND tab enables passive heatsinking on metal enclosures - no fan required for 1-A continuous operation at 55°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2575HV-3.3 | Same 3.3-V fixed output, 1-A rating, and 60-V max input, but uses different internal compensation and has higher quiescent current (12 mA vs. 5–10 mA). | Lacks cycle-by-cycle current limiting; relies on thermal foldback only - less robust under sustained overload. | Preferred only when legacy LM2575HV footprint compatibility is mandatory; TL2575HV-33IKV offers superior transient protection. |
| TPS54202HDDCR | 2-A synchronous buck with 3–36-V input, 3.3-V adjustable output, and 2.5-MHz switching - smaller solution size but requires external MOSFETs and compensation. | Designed for space-constrained PCBs; lacks integrated high-side switch and requires more complex layout and EMI mitigation. | Select for high-density designs needing >1-A output or tighter output tolerance; TL2575HV-33IKV remains optimal for cost-sensitive, thermally demanding, or high-voltage industrial use cases. |
Compared with LM2575HV-3.3, TL2575HV-33IKV provides faster overload response via cycle-by-cycle limiting and lower quiescent current; compared with TPS54202HDDCR, it trades higher efficiency and simpler design for lower output current and fixed voltage - making it ideal for ruggedized, high-input-voltage applications where reliability outweighs miniaturization.
Availability
TL2575HV-33IKV is available at Aetrix Electronics and suitable for industrial motor control, smart grid sensing, factory automation I/O modules, and building management systems requiring stable component supply across extended temperature and high-input-voltage conditions.
Supply support for TL2575HV-33IKV 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 high-reliability industrial and automotive power solutions.
The TL2575HV product line was designed specifically for ruggedized step-down conversion in harsh environments - targeting applications where wide input voltage, thermal resilience, and minimal external component count are critical design constraints.
FAQ
What is the maximum input voltage rating for TL2575HV-33IKV?
The TL2575HV-33IKV has an absolute maximum input voltage rating of 60 V, with recommended operating range from 4.75 V to 60 V. This allows direct use with 48-V industrial buses and tolerance of transient overvoltages such as load dump in vehicle-derived systems. Operation beyond 60 V risks permanent device damage per Absolute Maximum Ratings.
Does TL2575HV-33IKV require external feedback resistors?
No, TL2575HV-33IKV does not require external feedback resistors. As a fixed-output variant, its internal feedback network is trimmed to deliver 3.3 V; the FEEDBACK pin must be connected directly to the OUTPUT pin. External resistors are only needed for the adjustable TL2575HV-ADJ version.
What package type is used for TL2575HV-33IKV?
TL2575HV-33IKV uses the KV package - a TO-220 variant with staggered leads and an exposed metal tab electrically connected to GND. The package measures 10.16 mm × 8.82 mm and supports through-hole mounting with optional heatsinking via the tab for thermal management at full 1-A load.
How does the ON/OFF pin function on TL2575HV-33IKV?
The ON/OFF pin on TL2575HV-33IKV is a TTL-compatible shutdown control: grounding or applying <1.2 V enables normal operation, while applying >2.2 V places the device in standby mode with 50-μA quiescent current. The pin may be safely pulled up to VIN and must never be left floating to prevent erratic behavior.
What protection features are integrated into TL2575HV-33IKV?
TL2575HV-33IKV integrates thermal shutdown, cycle-by-cycle current limiting, and internal soft-start. These features protect against sustained overloads, output shorts, and hot-plug events without requiring external circuitry. Unlike older regulators, it does not rely solely on thermal foldback - the current limiting responds within each switching cycle to limit peak inductor current.
TL2575HV-33IKV 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):
- 60V
- Voltage - Output (Min/Fixed):
- 3.3V
- 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
TL2575HV-33IKV FAQ
1.How can I place an order for TL2575HV-33IKV through Aetrix?
Please submit a Request for Quotation (RFQ) for TL2575HV-33IKV 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-33IKV reliable?
The price and inventory of TL2575HV-33IKV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL2575HV-33IKV is usually 5 days.
3.What payment methods are accepted for TL2575HV-33IKV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL2575HV-33IKV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL2575HV-33IKV?
TL2575HV-33IKV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL2575HV-33IKV 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-33IKV?
For technical support, including TL2575HV-33IKV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL2575HV-33IKV requirements.
6.How does Aetrix verify that TL2575HV-33IKV is sourced from the original manufacturer or authorized distributors?
All TL2575HV-33IKV 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-33IKV meets industry standards.
7.What is the process for return or replacement of TL2575HV-33IKV?
All TL2575HV-33IKV units undergo pre-shipment inspection (PSI). If there is an issue with TL2575HV-33IKV, 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-33IKV part is unused and in its original packaging.
Return procedure for TL2575HV-33IKV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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