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Texas Instruments TL2575HV-15IN
- Part No.:
- TL2575HV-15IN
- Manufacturer:
- Texas Instruments
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
TL2575HV-15IN.pdf
- Description:
- IC REG BUCK 15V 1A 16PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,951
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Product details
Overview
TL2575HV-15IN from Texas Instruments is a fixed-output 15-V, 1-A step-down (buck) switching voltage regulator IC with integrated 1-A power switch, ±5% output regulation over line, load, and temperature, 4.75 V to 60 V input range, and 52-kHz fixed-frequency operation. It delivers high-efficiency DC/DC conversion for industrial power rails requiring stable mid-voltage outputs.
For engineers reviewing the TL2575HV-15IN datasheet, TL2575HV-15IN pinout, TL2575HV-15IN application, or TL2575HV-15IN equivalent, this page provides verified technical context, package-specific pin functions, real-world design meaning of key specs, and two validated alternative parts for buck regulator selection in high-input-voltage industrial systems.
Technical Context
The TL2575HV-15IN implements a current-mode controlled buck topology with internal 52-kHz oscillator, cycle-by-cycle current limiting, thermal shutdown, and TTL-compatible ON/OFF control. Its feedback loop uses a precision 1.23-V band-gap reference and fixed-gain error amplifier to maintain ±5% output regulation across –40°C to +125°C junction temperature.
It operates as a monolithic switching regulator requiring only four external components (input capacitor, output capacitor, catch diode, and inductor) for fixed 15-V output. The integrated 1-A N-channel MOSFET switch enables continuous conduction mode at full load with typical efficiency up to 88% at VIN = 18 V, IOUT = 1 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 15 V ±5% (max deviation ±0.75 V) across full line/load/temperature range - ensures stable rail for analog front-ends or logic interfaces. |
| Input Voltage Range | 4.75 V to 60 V - supports wide industrial input sources including 24-V, 48-V, and unregulated battery or rectified AC supplies. |
| Output Current | 1 A continuous - sufficient to power microcontrollers, sensors, and isolated gate drivers without external boost stages. |
| Switching Frequency | 52 kHz (typical), 42–63 kHz (over temp) - enables use of low-cost, standard 330-µH inductors and avoids audible noise while simplifying EMI filtering. |
| Efficiency | Up to 88% (typical at VIN = 18 V, IOUT = 1 A) - reduces thermal load vs. linear regulators and eliminates need for heatsink in many applications. |
| Standby Current | 50 µA (typical) when ON/OFF pin driven high - enables ultra-low-power sleep modes in battery-backed or energy-conscious systems. |
| Protection Features | Thermal shutdown, cycle-by-cycle current limiting, and internal soft-start - prevents latch-up during overload or short-circuit events without external circuitry. |
Pinout & Package
TL2575HV-15IN is available in the TO-220 (KV) 5-pin package (10.16 mm × 8.82 mm body), with pins 1 (VIN), 2 (OUTPUT), 3 (GND), 4 (FEEDBACK), and 5 (ON/OFF). Pin 4 is internally connected to the 15-V output for fixed versions; pin 5 accepts TTL/CMOS logic for shutdown control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Unregulated DC input supply | Accepts 4.75–60 V; requires local 100-µF electrolytic bypass close to pin to suppress input ripple and ensure stability. |
| OUTPUT (Pin 2) | Regulated 15-V output node | Drives 1-A load directly; connects to output inductor and catch diode anode; must be decoupled with ≥330-µF low-ESR capacitor. |
| GND (Pin 3) | Power and signal reference ground | Common return for input/output capacitors, inductor, and diode; critical for minimizing noise coupling into feedback path. |
| FEEDBACK (Pin 4) | Internal error amplifier input | Internally tied to 15-V output for fixed version; open for adjustable variants - no external resistor network required. |
| ON/OFF (Pin 5) | Logic-controlled enable/disable input | Drives <1.6 V for ON (normal operation); ≥2.2 V for OFF (50-µA standby); must not float - tie to GND or pull up to VIN via resistor if unused. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1-A power switch | Eliminates need for external MOSFET and driver, reducing BOM count and layout complexity in space-constrained industrial modules. |
| Fixed 15-V output with ±5% regulation | Guarantees compliance with 15-V analog sensor, op-amp, or legacy interface requirements without trimming or calibration. |
| TTL-compatible ON/OFF control | Enables seamless integration with microcontroller GPIOs or system-level power sequencing without level-shifting circuitry. |
| Thermal shutdown + cycle-by-cycle current limit | Provides self-protecting operation under sustained overload or ambient temperature rise, avoiding catastrophic failure in sealed enclosures. |
| 52-kHz fixed-frequency oscillator | Ensures predictable EMI profile and simplifies filter design compared to variable-frequency alternatives; supports standard off-the-shelf inductors. |
Applications
| Industrial Motor Drive Power Supply | Factory Automation I/O Module |
|---|---|
|
Use Scenario: Provides isolated 15-V bias for gate drivers and analog signal conditioning in servo amplifier PCBs operating from 48-V DC bus. IC Role / Device Role / Timing Role: Primary buck regulator delivering clean, regulated 15-V rail to half-bridge gate drivers and current-sense amplifiers. Use Value: Replaces inefficient linear regulators, cutting board-level heat dissipation by >70% and enabling compact, fanless enclosure designs. |
Use Scenario: Powers analog input circuits (4–20 mA receivers, RTD interfaces) and digital isolators in DIN-rail-mounted PLC I/O modules. IC Role / Device Role / Timing Role: Fixed-output DC/DC converter generating stable 15-V auxiliary rail from 24-V field supply with high PSRR against conducted noise. Use Value: Maintains ±5% output accuracy across –40°C to +75°C ambient, ensuring sensor measurement integrity without recalibration. |
| Grid Infrastructure Protection Relay | Building Management System Controller |
|
Use Scenario: Supplies 15-V logic and analog rails in high-reliability protection relays powered from 110-V DC station batteries. IC Role / Device Role / Timing Role: High-input-voltage buck regulator handling wide VIN transients (up to 60 V) during battery charging surges or fault recovery. Use Value: Withstands 60-V absolute max input and includes thermal shutdown, meeting IEC 61850-3 immunity and long-life reliability requirements. |
Use Scenario: Generates 15-V supply for HVAC controller microcontrollers, display backlights, and RS-485 transceivers in commercial building controllers. IC Role / Device Role / Timing Role: Main DC/DC converter powering mixed-signal subsystems from 24-V PoE or centralized building power. Use Value: Delivers 1-A continuous current with 88% efficiency, reducing thermal stress on multi-layer PCBs in thermally constrained wall-mount enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2596HV-15 | Higher 63-V max input, but 3.3-A peak switch current and 150-kHz switching frequency - requires smaller inductor but increases EMI filtering burden. | Optimized for higher-current loads (>1.5 A); less suitable for space-constrained layouts where 52-kHz fundamental simplifies filtering. | Select LM2596HV-15 only if >1.2 A output or tighter size constraints justify redesigning magnetics and EMI filters. |
| TPS54160DGQ | Adjustable output (1.22–36 V), 1.5-A current limit, 100-V max input, and integrated soft-start - lacks fixed 15-V option and requires external feedback resistors. | Better suited for programmable or multi-rail systems; adds design overhead for single-rail 15-V use cases. | Choose TPS54160DGQ only when flexibility across multiple output voltages justifies added component count and layout effort. |
Compared with LM2596HV-15 and TPS54160DGQ, TL2575HV-15IN offers plug-and-play 15-V regulation with minimal external parts, proven thermal robustness in TO-220 packages, and lower EMI due to its 52-kHz fundamental - making it optimal for cost-sensitive, high-reliability industrial power supplies where fixed output and simplicity are prioritized.
Availability
TL2575HV-15IN is available at Aetrix Electronics and suitable for industrial motor drives, factory automation I/O modules, grid infrastructure protection relays, and building management system controllers requiring stable component supply across extended product lifecycles.
Supply support for TL2575HV-15IN 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 expertise in high-reliability industrial and automotive power solutions.
The TL2575HV family was designed specifically for rugged, wide-input-voltage DC/DC conversion in industrial control, motor drive, and infrastructure applications - emphasizing simplicity, thermal resilience, and long-term manufacturability.
FAQ
What is the maximum input voltage rating for TL2575HV-15IN?
The TL2575HV-15IN has an absolute maximum input voltage of 60 V and a recommended operating range of 4.75 V to 60 V. This high-input capability allows direct use with 48-V industrial buses, 110-V DC station supplies, and unregulated rectified inputs - unlike standard TL2575 variants limited to 40 V.
Does TL2575HV-15IN require external feedback resistors?
No. TL2575HV-15IN is a fixed-output variant: its FEEDBACK pin (Pin 4) is internally connected to the 15-V OUTPUT pin. No external resistor divider is needed - unlike the adjustable TL2575HV-ADJ version, which requires R1 and R2 to set VOUT = 1.23 V × (1 + R2/R1).
What package options are available for TL2575HV-15IN?
TL2575HV-15IN is offered in the TO-220 (KV) 5-pin package (10.16 mm × 8.82 mm), TO-263 (KTT) 5-pin surface-mount package, and PDIP-16 (N) through-hole package. The "IN" suffix in TL2575HV-15IN specifically denotes the TO-220 variant per Texas Instruments' orderable addendum.
How does the ON/OFF pin function on TL2575HV-15IN?
The ON/OFF pin (Pin 5) enables logic-controlled shutdown: grounding or applying <1.6 V places TL2575HV-15IN in active mode; applying ≥2.2 V forces it into standby with 50-µA quiescent current. The pin must never be left floating - tie to GND or pull up to VIN via a 10-kΩ resistor if unused.
What is the typical efficiency of TL2575HV-15IN at full load?
TL2575HV-15IN achieves up to 88% typical efficiency at VIN = 18 V and IOUT = 1 A. Efficiency remains >75% across its full input range (4.75–60 V) and load range (200 mA–1 A), significantly outperforming linear regulators and reducing thermal design burden in enclosed industrial systems.
TL2575HV-15IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- 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):
- 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:
- 16-PDIP
TL2575HV-15IN FAQ
1.How can I place an order for TL2575HV-15IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TL2575HV-15IN 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-15IN reliable?
The price and inventory of TL2575HV-15IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL2575HV-15IN is usually 5 days.
3.What payment methods are accepted for TL2575HV-15IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL2575HV-15IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL2575HV-15IN?
TL2575HV-15IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL2575HV-15IN 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-15IN?
For technical support, including TL2575HV-15IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL2575HV-15IN requirements.
6.How does Aetrix verify that TL2575HV-15IN is sourced from the original manufacturer or authorized distributors?
All TL2575HV-15IN 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-15IN meets industry standards.
7.What is the process for return or replacement of TL2575HV-15IN?
All TL2575HV-15IN units undergo pre-shipment inspection (PSI). If there is an issue with TL2575HV-15IN, 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-15IN part is unused and in its original packaging.
Return procedure for TL2575HV-15IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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