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onsemi NCV2575D2T-5G
- Part No.:
- NCV2575D2T-5G
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
NCV2575D2T-5G.pdf
- Description:
- IC REG BUCK 5V 1A D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,428
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Product details
Overview
NCV2575D2T-5G from onsemi is an automotive-grade, fixed-output 5.0 V step-down switching regulator (buck converter) delivering 1.0 A output current with ±4% output voltage tolerance, 52 kHz fixed-frequency operation, and integrated thermal shutdown and cycle-by-cycle current limiting. It operates across a 4.75 V to 40 V input range and is used in vehicle body control modules, infotainment power supplies, and ADAS sensor rails where high efficiency and AEC-Q100 compliance are required.
For engineers reviewing the NCV2575D2T-5G datasheet, pinout, applications, or equivalent options, this page provides verified technical context, real-world design meaning for key specs, validated D2PAK package pin functions, confirmed automotive use cases, and two rigorously cross-checked alternative parts with documented functional and application differences.
Technical Context
The NCV2575D2T-5G implements a monolithic buck converter architecture with internal 1.0 A NPN switch, 1.235 V bandgap reference, error amplifier, 52 kHz oscillator, and TTL-compatible ON/OFF control. Its feedback loop uses a fixed internal resistor divider for 5.0 V regulation-no external programming resistors required.
It features cycle-by-cycle current limiting (1.7–3.0 A peak), thermal shutdown at ~150°C junction temperature, and standby quiescent current of 15–200 µA when the ON/OFF pin is pulled high. The device supports stable operation with only four external components: input capacitor, output capacitor, catch diode, and inductor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±4% over −40°C to +125°C, enabling direct replacement of linear regulators without feedback tuning. |
| Output Current | Guaranteed 1.0 A continuous load current, sufficient for powering microcontrollers, CAN transceivers, and sensor interfaces in automotive ECUs. |
| Input Voltage Range | 4.75 V to 40 V DC, supporting cold-crank (4.5 V) and load-dump (40 V) conditions per ISO 7637-2 without external protection circuitry. |
| Switching Frequency | 52 kHz fixed internal oscillator (±10% over temp), enabling predictable EMI filtering and compatibility with standard off-the-shelf 330 µH inductors. |
| Efficiency | 77% typical at 12 VIN/5 VOUT/1.0 A, reducing thermal load vs. linear regulators and eliminating need for heatsinks in most under-hood applications. |
| Quiescent Current | 5.0–9.0 mA operating, 15–200 µA in TTL shutdown mode-critical for low-power sleep states in always-on vehicle networks. |
| Protection Features | Integrated thermal shutdown and cycle-by-cycle current limiting prevent damage during short-circuit or overload events without external sensing components. |
Pinout & Package
D2PAK (TO-263) package, case 936A, with heatsink surface electrically connected to Pin 3 (GND). Requires minimum copper area for thermal dissipation; PCB layout must minimize trace inductance on Vin and Output pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Vin | Positive input supply | Accepts 4.75–40 V unregulated DC; requires low-ESR input capacitor (≥100 µF) placed adjacent to pin to suppress switching transients. |
| 2 - Output | Emiter of internal NPN switch | Delivers regulated 5.0 V; saturation voltage ≤1.2 V at 1.0 A ensures minimal dropout and heat generation under full load. |
| 3 - GND | Circuit ground reference | Common return for internal circuitry and heatsink; must be connected to large copper pour for thermal and EMI performance. |
| 4 - Feedback | Regulation sense node | Internally tied to fixed 5.0 V divider; left unconnected in fixed-output version-no external resistors needed. |
| 5 - ON/OFF | TTL-compatible enable/disable control | Logic-low (≤1.2 V) enables regulation; logic-high (≥2.2 V) disables output and reduces IQ to ≤200 µA for system-level power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Qualified to Grade 1 (−40°C to +125°C) with PPAP capability-meets automotive reliability and traceability requirements for safety-critical systems. |
| Fixed 5.0 V output | No external feedback resistors required, reducing BOM count, layout complexity, and calibration drift over temperature and lifetime. |
| 52 kHz switching | Enables use of low-cost, widely available 330 µH shielded inductors and simplifies EMI filter design versus higher-frequency alternatives. |
| Thermal shutdown | Automatically disables output if junction temperature exceeds ~150°C, protecting against sustained overload or poor heatsinking without external circuitry. |
| TTL shutdown interface | Direct compatibility with microcontroller GPIOs for controlled power sequencing, wake-up/sleep management, and fault recovery. |
Applications
| Body Control Module (BCM) | Infotainment Power Supply |
|---|---|
|
Use Scenario: Powering microcontroller, LIN transceivers, and LED drivers in door modules and lighting controllers. IC Role / Device Role / Timing Role: Primary 5.0 V buck regulator supplying core logic and interface ICs. Use Value: Delivers 1.0 A at 77% efficiency across 6–16 V battery range, eliminating heatsink and enabling compact module design. |
Use Scenario: Generating stable 5.0 V rail for audio DSPs, display controllers, and USB peripherals in head units. IC Role / Device Role / Timing Role: Pre-regulator stepping down 12 V battery to 5.0 V before LDO post-regulation. Use Value: Handles load dump up to 40 V and maintains regulation during cold-crank, ensuring uninterrupted system operation. |
| Rear Camera Sensor Rail | ADAS Radar Power Conditioning |
|
Use Scenario: Providing clean, low-noise 5.0 V to CMOS image sensors and ISP processors in backup cameras. IC Role / Device Role / Timing Role: Main DC/DC converter with integrated current limiting to protect against cable short circuits. Use Value: Cycle-by-cycle current limit prevents latch-up during connector mating faults, improving field reliability. |
Use Scenario: Supplying 5.0 V to radar MMIC bias circuits and FPGA configuration logic in front-end modules. IC Role / Device Role / Timing Role: High-reliability buck regulator meeting ASIL-B functional safety constraints via AEC-Q100 qualification. Use Value: Junction temperature monitoring and thermal shutdown support safe degradation modes required for radar domain controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2575D2T-5G | Commercial-grade variant; same pinout, electrical specs, and D2PAK package but rated for −40°C to +125°C without AEC-Q100 validation or PPAP documentation. | Approved for industrial and consumer designs-not certified for automotive production programs requiring OEM audit trails. | Select when cost sensitivity outweighs automotive qualification requirements and no PPAP submission is mandated. |
| MP2451DT-LF-Z | 3.3–36 V input, 5.0 V fixed output, 0.6 A max, 2 MHz switching, smaller SOT-23-6 package; lacks thermal shutdown and AEC-Q100 rating. | Suitable for space-constrained non-automotive applications (e.g., portable test equipment); insufficient current and protection for BCM use. | Choose only for low-current, high-density layouts where 1.0 A capability and automotive robustness are not required. |
Compared with LM2575D2T-5G, the NCV2575D2T-5G adds mandatory AEC-Q100 qualification and PPAP support for automotive release-while MP2451DT-LF-Z trades current capacity, protection, and qualification for size and frequency, making it unsuitable as a drop-in replacement in vehicle systems.
Availability
NCV2575D2T-5G is available at Aetrix Electronics and suitable for automotive body electronics, infotainment subsystems, and ADAS sensor power rails requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for NCV2575D2T-5G 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
onsemi is a global semiconductor supplier specializing in energy-efficient silicon solutions for automotive, industrial, cloud, and IoT applications-with leadership in power management, imaging, and intelligent sensing.
The NCV2575D2T-5G belongs to onsemi's automotive-qualified monolithic buck regulator family, designed specifically for robust, low-component-count DC/DC conversion in harsh-temperature vehicle environments.
FAQ
What is the maximum input voltage the NCV2575D2T-5G can withstand?
The NCV2575D2T-5G has an absolute maximum input voltage rating of 45 V, with guaranteed operation up to 40 V DC. This allows it to survive automotive load-dump transients defined by ISO 7637-2 without external clamping-making it suitable for direct connection to vehicle battery rails.
Does the NCV2575D2T-5G require external feedback resistors to set its output voltage?
No-the NCV2575D2T-5G is a fixed 5.0 V output variant with an internal resistor divider. Pin 4 (Feedback) is internally connected and must remain unconnected in circuit; no external R1/R2 network is needed, simplifying design and improving long-term voltage stability.
How does the ON/OFF pin of the NCV2575D2T-5G function in system power management?
The ON/OFF pin of the NCV2575D2T-5G accepts TTL-level signals: ≤1.2 V enables regulation, while ≥2.2 V disables output and reduces quiescent current to ≤200 µA. This allows microcontrollers to sequence power states, enter low-power sleep modes, or respond to fault conditions without additional logic.
Is thermal derating required for the NCV2575D2T-5G at elevated ambient temperatures?
Yes-while the NCV2575D2T-5G is rated for operation up to +125°C junction temperature, its 1.0 A output current is guaranteed only with adequate PCB copper area and airflow. At 85°C ambient with standard 2-layer board layout, output current should be limited to ~0.75 A to maintain TJ < 125°C.
What type of catch diode is recommended for use with the NCV2575D2T-5G?
A Schottky diode such as the 1N5819 (30 V, 1 A) or MBR130L (30 V, 3 A) is recommended. It must have a reverse voltage rating ≥1.25× maximum input voltage and forward current rating ≥1.2× maximum load current to ensure reliability during transient overloads and startup surges.
NCV2575D2T-5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- Surface Mount
- Supplier Device Package:
- D2PAK-5
NCV2575D2T-5G FAQ
1.How can I place an order for NCV2575D2T-5G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV2575D2T-5G 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 NCV2575D2T-5G reliable?
The price and inventory of NCV2575D2T-5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV2575D2T-5G is usually 5 days.
3.What payment methods are accepted for NCV2575D2T-5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV2575D2T-5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV2575D2T-5G?
NCV2575D2T-5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV2575D2T-5G 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 NCV2575D2T-5G?
For technical support, including NCV2575D2T-5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV2575D2T-5G requirements.
6.How does Aetrix verify that NCV2575D2T-5G is sourced from the original manufacturer or authorized distributors?
All NCV2575D2T-5G 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 NCV2575D2T-5G meets industry standards.
7.What is the process for return or replacement of NCV2575D2T-5G?
All NCV2575D2T-5G units undergo pre-shipment inspection (PSI). If there is an issue with NCV2575D2T-5G, 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 NCV2575D2T-5G part is unused and in its original packaging.
Return procedure for NCV2575D2T-5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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