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Texas Instruments TL2575-05IN
- Part No.:
- TL2575-05IN
- Manufacturer:
- Texas Instruments
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
TL2575-05IN.pdf
- Description:
- IC REG BUCK 5V 1A 16PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:627
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Product details
Overview
TL2575-05IN from Texas Instruments is a fixed-output 5-V, 1-A step-down (buck) switching voltage regulator in a PDIP-16 package. It operates from 8 V to 40 V input, delivers ±5% output regulation over line, load, and temperature, and integrates a 52-kHz oscillator, thermal shutdown, and cycle-by-cycle current limiting - used in industrial power supplies where compact, efficient DC/DC conversion replaces linear regulators.
For engineers reviewing the TL2575-05IN datasheet, TL2575-05IN pinout, TL2575-05IN application, or TL2575-05IN equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions for the PDIP-16 variant, confirmed alternatives with functional differences, and supply support for volume procurement and BOM continuity.
Technical Context
The TL2575-05IN implements a fixed-frequency, current-mode buck regulator with internal 1-A N-channel MOSFET switch, 1.23-V bandgap reference, and integrated error amplifier. Its 52-kHz oscillator enables predictable EMI filtering and stable loop compensation using only four external components: input capacitor, output capacitor, catch diode, and power inductor.
It features TTL-compatible ON/OFF control (50-μA standby current), cycle-by-cycle current limiting, and thermal shutdown - all operating across –40°C to +125°C virtual junction temperature. The FEEDBACK pin is internally connected to the 5-V output, eliminating external resistors for fixed-voltage operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 5 V ±5% (max) over full line/load/temperature range - ensures stable logic rail without trimming. |
| Output current | 1 A continuous - supports microcontroller, sensor, and peripheral loads without external boost stages. |
| Input voltage range | 8 V to 40 V - compatible with 12-V and 24-V industrial bus systems, including automotive battery transients. |
| Switching frequency | 52 kHz typical - enables use of low-cost, standard 330-μH inductors and simplifies EMI filter design. |
| Efficiency | Up to 88% at 12-VIN/5-VOUT/1-A - reduces thermal load vs. linear regulators; often eliminates heatsink. |
| Standby current | 50 μA typical - enables low-power sleep modes in battery-backed or energy-conscious systems. |
| Protection | Thermal shutdown + cycle-by-cycle current limiting - prevents damage during overload or short-circuit events. |
Pinout & Package
TL2575-05IN is supplied in a 16-pin plastic dual in-line package (PDIP), body size 19.31 mm × 6.35 mm, with through-hole mounting and GND pins on both sides for thermal and noise performance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main unregulated DC input (8–40 V); requires local 100-μF electrolytic bypass. |
| 2 | OUTPUT | Regulated 5-V output; connects to output inductor and 330-μF bulk capacitor. |
| 3 | GND | Power ground; ties to PCB ground plane; multiple GND pins reduce impedance. |
| 4 | FEEDBACK | Internally tied to 5-V output - no external resistor network required for fixed operation. |
| 5 | ON/OFF | TTL-compatible shutdown control; <1.6 V = active, >2.2 V = standby (50-μA IQ). |
| 6–8, 10–11, 13–15 | NC | No internal connection - must remain unconnected per datasheet. |
| 9, 12, 16 | GND | Additional ground terminals - improve thermal dissipation and reduce ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 5-V output | Eliminates external feedback resistors - reduces BOM count and layout sensitivity. |
| Integrated 1-A switch | Enables single-chip buck solution with only 4 external components - accelerates design cycle. |
| 52-kHz fixed oscillator | Provides consistent switching frequency for repeatable EMI filtering and inductor selection. |
| TTL shutdown | Allows system-level power sequencing and low-power sleep states with minimal control overhead. |
| Thermal + current protection | Self-protects under fault conditions without external circuitry - improves field reliability. |
Applications
| Industrial Motor Drives | Factory Automation Controllers |
|---|---|
Use Scenario: Powering gate drivers and logic circuits in 24-V DC motor control modules. IC Role / Device Role / Timing Role: Primary 5-V buck regulator supplying MCU, isolated I/O, and PWM logic rails. Use Value: High efficiency (up to 88%) minimizes heat buildup in enclosed drive enclosures; wide 8–40-V input accommodates 24-V bus variations and transients. |
Use Scenario: Providing regulated 5-V supply for PLC I/O modules and sensor interface boards. IC Role / Device Role / Timing Role: Central DC/DC converter delivering clean, stable 5-V rail to multiple digital subsystems. Use Value: ±5% regulation over –40°C to +125°C ensures reliable operation in unconditioned factory environments; PDIP package supports manual rework and long-term serviceability. |
| Grid Infrastructure Meters | Building Management Systems |
Use Scenario: Converting 12-V or 24-V backup battery or auxiliary supply to 5-V for metrology ICs and RTCs. IC Role / Device Role / Timing Role: Standby-capable power stage enabling low-quiescent operation during grid outage. Use Value: 50-μA standby current extends battery life; thermal shutdown prevents failure during prolonged overloads in sealed meter housings. |
Use Scenario: Powering HVAC controllers, occupancy sensors, and communication gateways in commercial buildings. IC Role / Device Role / Timing Role: Main 5-V regulator for embedded ARM Cortex-M microcontrollers and RS-485 transceivers. Use Value: Fixed 5-V output with no external resistors simplifies certification and reduces field failure modes; 1-A rating supports future firmware expansion with added peripherals. |
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. TL2575-05IN's 40 V), same 1-A rating and 52-kHz frequency. | No HV variant available; lacks TL2575HV family's 60-V input option for future-proofing. | Drop-in replacement if HV capability not needed; verify thermal derating at high ambient temperatures. |
| TPS54202DDCR | 2-A synchronous buck, 4.5–28-V input, 500-kHz switching, smaller SOT-23-6 package - no PDIP option. | Higher efficiency (>90%), smaller footprint, but requires external compensation and more complex layout. | Preferred for space-constrained, high-efficiency designs; not suitable for legacy PDIP-based boards or manual assembly. |
Compared with LM2575-5.0, TL2575-05IN offers identical drop-in compatibility but superior thermal metrics (RθJA = 67°C/W vs. LM2575's ~75°C/W); versus TPS54202DDCR, TL2575-05IN trades higher efficiency and density for simpler design, robustness, and through-hole manufacturability.
Availability
TL2575-05IN is available at Aetrix Electronics and suitable for industrial motor drives, factory automation controllers, and grid infrastructure meters requiring stable component supply, long-lifecycle support, and through-hole assembly compatibility.
Supply support for TL2575-05IN 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 power conversion ICs.
The TL2575 family was designed as a robust, easy-to-use replacement for three-terminal linear regulators in industrial and infrastructure applications - prioritizing simplicity, thermal resilience, and wide-input operation over ultra-high efficiency or miniaturization.
FAQ
What is the maximum input voltage for TL2575-05IN?
The TL2575-05IN supports a maximum input voltage of 40 V, as specified in its absolute maximum ratings and recommended operating conditions. This allows direct use with nominal 24-V industrial buses and accommodates transient surges up to 40 V without external clamping. Exceeding 40 V risks permanent damage, and the TL2575HV-05 variant must be selected for 60-V operation.
Does TL2575-05IN require external feedback resistors?
No, TL2575-05IN does not require external feedback resistors. As a fixed 5-V output variant, its internal feedback node is pre-connected to the OUTPUT pin. The FEEDBACK pin (Pin 4) is internally tied to the 5-V rail - only external capacitors, inductor, diode, and input/output bypass components are needed for basic operation.
What package type is TL2575-05IN supplied in?
TL2575-05IN is supplied exclusively in the 16-pin plastic dual in-line package (PDIP), with nominal body dimensions of 19.31 mm × 6.35 mm. This through-hole package supports manual soldering, prototyping, and long-term serviceability - distinct from surface-mount variants like TO-263 or TO-220 offered in other TL2575 part numbers.
How does the ON/OFF pin function on TL2575-05IN?
The ON/OFF pin (Pin 5) provides TTL-compatible shutdown control: grounding or applying <1.6 V activates regulation, while applying >2.2 V places TL2575-05IN into standby mode with 50-μA quiescent current. The pin must not be left floating and may be pulled up to VIN via a resistor for default-on behavior.
What is the typical efficiency of TL2575-05IN at full load?
TL2575-05IN achieves up to 88% typical efficiency at 12-V input, 5-V output, and 1-A load - measured per datasheet Figure 6-5. Efficiency drops at lower input voltages (e.g., 8 V) due to higher conduction losses and rises slightly at higher inputs (e.g., 24 V) within its operational range, remaining above 77% across all rated conditions.
TL2575-05IN 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):
- 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:
- 16-PDIP
TL2575-05IN FAQ
1.How can I place an order for TL2575-05IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TL2575-05IN 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 TL2575-05IN reliable?
The price and inventory of TL2575-05IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL2575-05IN is usually 5 days.
3.What payment methods are accepted for TL2575-05IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL2575-05IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL2575-05IN?
TL2575-05IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL2575-05IN 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 TL2575-05IN?
For technical support, including TL2575-05IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL2575-05IN requirements.
6.How does Aetrix verify that TL2575-05IN is sourced from the original manufacturer or authorized distributors?
All TL2575-05IN 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 TL2575-05IN meets industry standards.
7.What is the process for return or replacement of TL2575-05IN?
All TL2575-05IN units undergo pre-shipment inspection (PSI). If there is an issue with TL2575-05IN, 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 TL2575-05IN part is unused and in its original packaging.
Return procedure for TL2575-05IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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