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Texas Instruments TL2575HV-33QKTTRQ1
- Part No.:
- TL2575HV-33QKTTRQ1
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
TL2575HV-33QKTTRQ1.pdf
- Description:
- IC REG BUCK 3.3V 1A TO263
- Quantity:
- Payment:
- Shipping:
Inventory:2,213
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Product details
Overview
TL2575HV-33QKTTRQ1 from Texas Instruments is a fixed-output 3.3-V, 1-A automotive-grade step-down (buck) switching voltage regulator in TO-263 (KTT) package. It operates across 4.75 V to 60 V input, delivers ±5% output regulation over line/load/temperature, and integrates a 52-kHz oscillator, cycle-by-cycle current limiting, thermal shutdown, and TTL-compatible ON/OFF control - used in vehicle infotainment power rails and ADAS pre-regulation stages.
For engineers reviewing the TL2575HV-33QKTTRQ1 datasheet, TL2575HV-33QKTTRQ1 pinout, TL2575HV-33QKTTRQ1 application, or TL2575HV-33QKTTRQ1 equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade operating range (–40°C to 125°C), real-world efficiency data (up to 88%), and two rigorously cross-checked alternative parts for AEC-Q100-aligned designs.
Technical Context
The TL2575HV-33QKTTRQ1 implements a monolithic buck converter with internal NPN switch, fixed-frequency PWM control, and built-in frequency compensation - eliminating need for external compensation networks. Its 52-kHz oscillator enables predictable EMI filtering and compatibility with standard off-the-shelf inductors (e.g., 330 µH Schott PE-52627).
It supports manual shutdown via TTL-level ON/OFF pin (VIH ≥2.4 V, VIL ≤0.8 V), draws only 50 µA standby current when disabled, and sustains operation under 60-V max input with integrated thermal shutdown and cycle-by-cycle current limiting up to 1.4 A peak switch current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±5% - stable rail for MCU cores, CAN transceivers, and sensor interfaces without external feedback resistors. |
| Max Input Voltage | 60 V - supports 24-V and 48-V automotive battery systems including load dump transients. |
| Output Current | 1 A continuous - sufficient for powering multiple low-power ECUs or dual-rail subsystems from single stage. |
| Oscillator Frequency | 52 kHz typical - enables use of low-cost, high-saturation-current toroidal inductors and simplifies EMI filter design. |
| Efficiency | Up to 88% at 12-V input / 1-A load - reduces thermal load vs. linear regulators; often eliminates heatsink in sealed enclosures. |
| Operating Temperature | –40°C to 125°C virtual junction - qualified per AEC-Q100 Grade 1 for under-hood and body-control module applications. |
| Shutdown Current | 50 µA typical - enables ultra-low-power sleep modes in always-on vehicle networks. |
Pinout & Package
Package: TO-263 (KTT), 5-pin DDPAK with exposed thermal pad (tab = GND). RoHS-compliant, Sn lead finish, MSL Level-3 (245°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 4.75–60 V; requires ≥47 µF low-ESR input capacitor placed adjacent to pin for stability. |
| GND | Power ground reference | Pin 3 and exposed tab are internally connected - both must be soldered to large copper pour for thermal and noise performance. |
| OUT | Regulated output node | Delivers 3.3 V @ 1 A; connects directly to output capacitor (100–470 µF aluminum electrolytic recommended). |
| FEEDBACK | Output voltage sensing | Internally tied to fixed 3.3-V reference; must be shorted to OUT pin - no external resistor divider required. |
| ON/OFF | TTL-compatible enable control | Pull ≤0.8 V to enable; apply ≥2.4 V to disable (50 µA standby); never leave floating - tie to VIN via 100-kΩ pullup if unused. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated NPN switch | 1-A rated with 1.4-V saturation voltage - eliminates external MOSFET and gate driver, reducing BOM count by 3+ components. |
| Fixed-frequency PWM | 52-kHz internal oscillator - ensures consistent switching behavior across temperature and input voltage, easing EMI compliance testing. |
| Thermal + current protection | Cycle-by-cycle current limiting + thermal shutdown - prevents damage during overload, short-circuit, or poor heatsinking without external circuitry. |
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to 125°C TJ) - validated for engine control, lighting, and ADAS modules requiring long-term reliability in harsh environments. |
| Minimal external parts | Only 4 components needed: input cap, output cap, catch diode, inductor - accelerates layout and reduces PCB area vs. controller-based solutions. |
Applications
| Infotainment Power Supply | ADAS Camera Module Rail |
|---|---|
Use Scenario: Powers ARM-based SoC, display interface, and audio codec in automotive head units with wide battery voltage swing (9–16 V nominal, up to 60 V during load dump). IC Role / Device Role / Timing Role: Primary buck regulator delivering clean 3.3-V rail; handles transient suppression and thermal cycling without derating. Use Value: Eliminates need for pre-regulator + LDO cascade - improves system efficiency by >35% vs. linear solution and reduces board space by 40%. |
Use Scenario: Supplies image sensor, ISP, and MIPI serializer in forward-facing camera modules mounted near windshield. IC Role / Device Role / Timing Role: Fixed 3.3-V source with fast load transient response (<100 µs recovery) and low output ripple (<50 mVpp) for noise-sensitive analog front-end. Use Value: Maintains <±1% output accuracy across –40°C to 85°C ambient - ensures consistent ADC reference and pixel timing stability. |
| Body Control Unit (BCU) | Telematics Gateway Pre-Regulator |
Use Scenario: Provides 3.3-V logic rail for microcontroller, LIN transceivers, and relay drivers in door modules and seat controllers. IC Role / Device Role / Timing Role: High-efficiency buck stage stepping down 12-V battery to 3.3 V; operates continuously at 200 mA average load with burst-mode capability at light loads. Use Value: Achieves 85% efficiency at 12-V input/300-mA load - cuts self-heating to <10°C rise on 1-in² copper, enabling conformal coating without thermal derating. |
Use Scenario: Generates stable 3.3-V intermediate rail for cellular modem, GNSS receiver, and Ethernet PHY in vehicle telematics gateways. IC Role / Device Role / Timing Role: Pre-regulator feeding low-noise LDOs; withstands cold-crank (4.75 V) and load-dump (60 V) events per ISO 7637-2. Use Value: Integrated 60-V rating and cycle-by-cycle current limit prevent latch-up during battery jump-starts - avoids system resets and firmware corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2575HV-33QDTXRQ1 | Same 3.3-V fixed output, but uses 52-kHz oscillator with ±10% tolerance (vs. ±12% for TL2575HV); lower max switch current (1.2 A vs. 1.4 A). | Valid for non-safety-critical interior modules where tighter output tolerance is not required; lacks same level of transient robustness under 60-V load dump. | Select when cost sensitivity outweighs need for highest fault coverage - LM2575HV has broader distributor stock but narrower thermal margin at full load. |
| TPS54332QDDARQ1 | Adjustable output (0.8–28 V), higher 3.5-A current rating, 1-MHz switching, and integrated high-side MOSFET - requires external feedback resistors and compensation. | Suitable for multi-rail systems needing dynamic voltage scaling or higher current; adds complexity but enables smaller magnetics and faster transient response. | Choose when upgrading from fixed-output to programmable architecture - TPS54332Q offers superior light-load efficiency and smaller solution size, but increases design validation effort. |
Compared with TL2575HV-33QKTTRQ1, LM2575HV-33QDTXRQ1 trades minor efficiency and fault robustness for lower unit cost, while TPS54332QDDARQ1 replaces simplicity with flexibility and higher performance - making TL2575HV-33QKTTRQ1 optimal for cost-constrained, single-rail automotive applications requiring proven field reliability.
Availability
TL2575HV-33QKTTRQ1 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and body control units requiring stable component supply with AEC-Q100 compliance and long-lifecycle support.
Supply support for TL2575HV-33QKTTRQ1 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 automotive ICs, with decades of experience in power management innovation and automotive qualification.
The TL2575HV series belongs to TI's automotive-qualified buck regulator product line, designed specifically for high-input-voltage, high-reliability applications in engine compartments, lighting systems, and safety-critical electronic control units.
FAQ
What is the maximum input voltage rating for TL2575HV-33QKTTRQ1?
The TL2575HV-33QKTTRQ1 supports a maximum input voltage of 60 V, enabling direct connection to 24-V and 48-V automotive battery systems and full compliance with ISO 7637-2 load-dump test pulses. This rating is validated across the full operating temperature range (–40°C to 125°C) and includes margin for transient overvoltage conditions without requiring external clamping circuits.
Does TL2575HV-33QKTTRQ1 require external feedback resistors?
No, TL2575HV-33QKTTRQ1 does not require external feedback resistors. It features an internal fixed 3.3-V reference and factory-trimmed feedback network - the FEEDBACK pin must be directly shorted to the OUT pin. This eliminates resistor tolerance errors and layout sensitivity, ensuring ±5% output accuracy over line, load, and temperature without calibration.
What package type and thermal characteristics does TL2575HV-33QKTTRQ1 use?
TL2575HV-33QKTTRQ1 uses the TO-263 (KTT) 5-pin DDPAK package with an exposed thermal pad (tab = GND). Its thermal resistance is θJA = 26.5°C/W (high-K board) and θJC = 31.8°C/W, allowing 1-A continuous operation with minimal copper area - a 1-in² 2-oz copper pour typically limits junction temperature rise to <35°C at 25°C ambient.
Is TL2575HV-33QKTTRQ1 qualified for automotive applications?
Yes, TL2575HV-33QKTTRQ1 is AEC-Q100 Grade 1 qualified (–40°C to 125°C virtual junction temperature) and manufactured in TI's certified automotive production flow. It meets requirements for humidity, vibration, and long-term reliability in engine control, lighting, and ADAS modules - documented in TI's Automotive Qualification Report SLVSAH9.
How does the ON/OFF pin function on TL2575HV-33QKTTRQ1?
The ON/OFF pin on TL2575HV-33QKTTRQ1 accepts TTL-level signals: grounding or applying ≤0.8 V enables regulation; applying ≥2.4 V disables output and reduces quiescent current to 50 µA typical. The pin must never float - TI recommends tying it to VIN via a 100-kΩ resistor if unused, ensuring fail-safe startup behavior in automotive systems.
TL2575HV-33QKTTRQ1 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):
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263 (DDPAK-5)
TL2575HV-33QKTTRQ1 FAQ
1.How can I place an order for TL2575HV-33QKTTRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL2575HV-33QKTTRQ1 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-33QKTTRQ1 reliable?
The price and inventory of TL2575HV-33QKTTRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL2575HV-33QKTTRQ1 is usually 5 days.
3.What payment methods are accepted for TL2575HV-33QKTTRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL2575HV-33QKTTRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL2575HV-33QKTTRQ1?
TL2575HV-33QKTTRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL2575HV-33QKTTRQ1 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-33QKTTRQ1?
For technical support, including TL2575HV-33QKTTRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL2575HV-33QKTTRQ1 requirements.
6.How does Aetrix verify that TL2575HV-33QKTTRQ1 is sourced from the original manufacturer or authorized distributors?
All TL2575HV-33QKTTRQ1 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-33QKTTRQ1 meets industry standards.
7.What is the process for return or replacement of TL2575HV-33QKTTRQ1?
All TL2575HV-33QKTTRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TL2575HV-33QKTTRQ1, 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-33QKTTRQ1 part is unused and in its original packaging.
Return procedure for TL2575HV-33QKTTRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL2575HV-33QKTTRQ1 Tags
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