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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

onsemi NCV2575D2T-5R4G

Name: NCV2575D2T-5R4G
Brand: onsemi
SKU: NCV2575D2T-5R4G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCV2575D2T-5R4G

Manufacturer:: onsemi

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: TO-263-6, D2PAK (5 Leads + Tab), TO-263BA

Datasheet:: NCV2575D2T-5R4G.pdf

Description:: IC REG BUCK 5V 1A D2PAK-5

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Product details

Overview

NCV2575D2T-5R4G from onsemi is an automotive-grade, fixed-output 5.0 V, 1.0 A step-down switching regulator in D2PAK (TO-263) package with integrated 1.0 A power switch, 52 kHz internal oscillator, and thermal shutdown protection. It delivers high efficiency (up to 77% at 12 V_IN/1.0 A) and operates across 8.0–40 V input range, suited for vehicle body control modules requiring stable 5 V rail generation under wide battery voltage swings.

For engineers reviewing the NCV2575D2T-5R4G datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed ±4% output voltage tolerance over −40°C to +125°C, TTL-compatible ON/OFF control with 80 µA standby current, cycle-by-cycle current limiting, and AEC-Q100 qualification for automotive use.

Technical Context

The NCV2575D2T-5R4G implements a voltage-mode buck converter architecture with a fixed 52 kHz oscillator and internal 1.235 V bandgap reference. Its error amplifier compares feedback voltage against this reference to drive a 1.0 A NPN switch via a fixed-gain comparator and driver stage.

It features built-in thermal shutdown, cycle-by-cycle peak current limiting (1.4–3.2 A), and an internal 3.1 V regulator powering bias circuitry. The ON/OFF pin enables logic-level shutdown with VIH ≥ 2.4 V (−40°C to +125°C) and VIL ≤ 0.8 V, reducing quiescent current to 80 µA typical.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 5.0 V ±4% over −40°C to +125°C and full load (0.2–1.0 A); ensures stable MCU/ASIC supply despite temperature and load variation.
Output Current	Guaranteed 1.0 A continuous; supports single-rail power for microcontrollers, sensors, and CAN transceivers in automotive ECUs.
Input Voltage Range	8.0 V to 40 V DC; accommodates cold-crank (6.5 V min not supported), normal operation (9–16 V), and load-dump (up to 40 V) conditions per ISO 7637-2.
Switching Frequency	52 kHz ±10% (±2% over 0°C–125°C); enables use of low-cost, standard 330 µH inductors and simplifies EMI filtering design.
Efficiency	77% typical at 12 V_IN, 1.0 A, 5 V_OUT; reduces thermal load vs. linear regulators-no heatsink required in many chassis-mount applications.
Quiescent Current	5.0–9.0 mA (active), 15–200 µA (standby); meets automotive low-power sleep mode requirements without external enable sequencing.
Protection Features	Thermal shutdown, cycle-by-cycle current limit, and internal soft-start; prevents latch-up during short-circuit or overload events.

Pinout & Package

D2PAK (TO-263-5) package with exposed heat slug electrically connected to Pin 3 (GND); requires minimum copper area for thermal dissipation (R_JA = 70°C/W).

Pin/Terminal	Circuit Role	Design Meaning
1 - Vin	Positive input supply	Accepts 8.0–40 V unregulated DC; requires local 100 µF/50 V low-ESR capacitor to suppress switching transients.
2 - Output	Emitter of internal NPN switch	Delivers regulated 5.0 V; PCB copper area must be minimized to reduce EMI coupling into sensitive analog circuits.
3 - GND	Circuit ground reference	Common return for input/output capacitors, catch diode, and feedback network; single-point grounding recommended.
4 - Feedback	Regulated output sensing node	Internally tied to 5.0 V output; no external resistor network needed-simplifies layout and improves stability.
5 - ON/OFF	Logic-controlled enable/disable	TTL-compatible input; ≥2.4 V disables regulator (80 µA I_Q), ≤0.8 V enables; compatible with microcontroller GPIO.

Key Features

Feature	Design Value
AEC-Q100 qualified	Qualified to Grade 1 (−40°C to +125°C junction), PPAP-capable-meets automotive production release requirements.
Integrated 1.0 A switch	Eliminates need for external MOSFET and gate driver; reduces BOM count and layout complexity in space-constrained ECUs.
Fixed 52 kHz oscillator	Enables predictable EMI profile and compatibility with off-the-shelf 330 µH inductors optimized for this frequency.
Thermal shutdown + current limit	Self-protecting under sustained overload or ambient >125°C; recovers automatically after fault removal-no latch-up.
Low standby current	80 µA typical I_stby allows always-on monitoring circuits (e.g., wake-up logic) without draining battery.

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 V buck regulator delivering clean, stable rail under battery voltage fluctuations (6–16 V). Use Value: Eliminates need for discrete switcher + controller; AEC-Q100 compliance ensures reliability across 15-year vehicle lifetime.	Use Scenario: Generating 5 V supply for display controllers, audio codecs, and USB peripherals in head units. IC Role / Device Role / Timing Role: Fixed-output step-down regulator handling transient loads up to 1.0 A during screen backlight activation. Use Value: 77% efficiency minimizes heat buildup inside sealed infotainment enclosures; ON/OFF pin enables software-controlled power cycling.
Engine Control Unit (ECU) Auxiliary Rail	ADAS Camera Module Power
Use Scenario: Providing isolated 5 V rail for sensor signal conditioning and CAN FD interface in engine management systems. IC Role / Device Role / Timing Role: Secondary regulator fed from main 12 V system rail; withstands load dump pulses up to 40 V. Use Value: Built-in 40 V absolute max input rating and thermal protection ensure robustness during alternator regulation faults.	Use Scenario: Powering image sensor, ISP, and MIPI interface in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Compact, thermally efficient 5 V source mounted directly on camera PCB near imaging components. Use Value: D2PAK package enables direct heatsinking to metal housing; ±4% output tolerance maintains sensor ADC reference accuracy.

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 V buck regulator delivering clean, stable rail under battery voltage fluctuations (6–16 V).

Use Value: Eliminates need for discrete switcher + controller; AEC-Q100 compliance ensures reliability across 15-year vehicle lifetime.

Use Scenario: Generating 5 V supply for display controllers, audio codecs, and USB peripherals in head units.

IC Role / Device Role / Timing Role: Fixed-output step-down regulator handling transient loads up to 1.0 A during screen backlight activation.

Use Value: 77% efficiency minimizes heat buildup inside sealed infotainment enclosures; ON/OFF pin enables software-controlled power cycling.

Engine Control Unit (ECU) Auxiliary Rail

ADAS Camera Module Power

Use Scenario: Providing isolated 5 V rail for sensor signal conditioning and CAN FD interface in engine management systems.

IC Role / Device Role / Timing Role: Secondary regulator fed from main 12 V system rail; withstands load dump pulses up to 40 V.

Use Value: Built-in 40 V absolute max input rating and thermal protection ensure robustness during alternator regulation faults.

Use Scenario: Powering image sensor, ISP, and MIPI interface in rear-view or surround-view camera modules.

IC Role / Device Role / Timing Role: Compact, thermally efficient 5 V source mounted directly on camera PCB near imaging components.

Use Value: D2PAK package enables direct heatsinking to metal housing; ±4% output tolerance maintains sensor ADC reference accuracy.

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-5.0/NOPB	Commercial-grade (−40°C to +125°C), same pinout and electrical specs; lacks AEC-Q100 qualification and automotive PPAP support.	Not suitable for production automotive systems; acceptable for prototyping or non-safety-critical industrial designs.	Select only if AEC-Q100 is not required and cost is primary driver; verify lifecycle status-this part is marked discontinued in onsemi documentation.
MPQ4420AGL-AEC1-Z	42 V input, 2 A synchronous buck; 2.2 MHz switching, smaller external components; requires external compensation.	Better suited for space-constrained, high-efficiency ADAS modules; higher cost and design complexity than NCV2575D2T-5R4G.	Choose when board area or efficiency >90% is critical; avoid if legacy 52 kHz EMI filter design or minimal BOM count is mandatory.

Compared with LM2575D2T-5.0/NOPB, NCV2575D2T-5R4G adds automotive qualification and extended reliability testing; versus MPQ4420AGL-AEC1-Z, it trades higher efficiency and integration for lower cost, simpler layout, and proven field reliability in mature ECU platforms.

Availability

NCV2575D2T-5R4G is available at Aetrix Electronics and suitable for automotive body control modules, infotainment subsystems, and ADAS camera power supplies requiring stable component supply across long production lifecycles.

Supply support for NCV2575D2T-5R4G 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 focused on energy-efficient electronics, with leadership in automotive, industrial, and cloud power solutions.

The NCV2575 series belongs to onsemi's automotive analog power portfolio, designed specifically for robust, cost-effective DC-DC conversion in vehicle electronic control units under harsh environmental and regulatory conditions.

FAQ

What is the maximum input voltage rating for the NCV2575D2T-5R4G?

The NCV2575D2T-5R4G has an absolute maximum input voltage rating of 45 V, with guaranteed operation up to 40 V DC. This allows safe operation during automotive load-dump events per ISO 7637-2, where battery line transients can reach 40 V for up to 400 ms. Exceeding 45 V risks permanent damage to the internal switch and control circuitry.

Does the NCV2575D2T-5R4G require external feedback resistors to set its output voltage?

No, the NCV2575D2T-5R4G is a fixed 5.0 V output version-the feedback divider is fully internal. Pin 4 (Feedback) connects directly to the internal 5.0 V output node, eliminating external resistors and associated tolerance/temperature drift errors. This simplifies layout and improves long-term output stability.

How does the ON/OFF pin function on the NCV2575D2T-5R4G?

The ON/OFF pin (Pin 5) provides TTL-compatible enable control: applying ≥2.4 V (−40°C to +125°C) disables the regulator, reducing quiescent current to 80 µA typical; ≤0.8 V enables normal operation. No pull-up or pull-down is required-microcontroller GPIO can drive it directly without level-shifting.

Is a heatsink required for the NCV2575D2T-5R4G at full 1.0 A load?

A heatsink is not required for most applications: at 12 V_IN/5 V_OUT/1.0 A, power dissipation is ~700 mW, and the D2PAK package's R_JA of 70°C/W yields ~50°C rise above ambient. With ≥2 cm² copper pad on inner layer, thermal performance is sufficient for ambient ≤85°C. For >85°C ambient or >1.0 A pulsed loads, a small external heatsink is recommended.

What is the purpose of the internal 3.1 V regulator in the NCV2575D2T-5R4G?

The internal 3.1 V regulator powers all bias circuitry-including the oscillator, error amplifier, and logic gates-ensuring stable operation independent of input voltage variations between 8.0 V and 40 V. It eliminates need for external bias supply and improves PSRR, enabling reliable startup even during cold-crank (though NCV2575D2T-5R4G itself requires ≥8.0 V to operate).

NCV2575D2T-5R4G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-263-6, D2PAK (5 Leads + Tab), TO-263BA

Packaging:: Tape & Reel (TR)

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-5R4G FAQ

1.How can I place an order for NCV2575D2T-5R4G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCV2575D2T-5R4G 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-5R4G reliable?

The price and inventory of NCV2575D2T-5R4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV2575D2T-5R4G is usually 5 days.

3.What payment methods are accepted for NCV2575D2T-5R4G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV2575D2T-5R4G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCV2575D2T-5R4G?

NCV2575D2T-5R4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCV2575D2T-5R4G 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-5R4G?

For technical support, including NCV2575D2T-5R4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV2575D2T-5R4G requirements.

6.How does Aetrix verify that NCV2575D2T-5R4G is sourced from the original manufacturer or authorized distributors?

All NCV2575D2T-5R4G 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-5R4G meets industry standards.

7.What is the process for return or replacement of NCV2575D2T-5R4G?

All NCV2575D2T-5R4G units undergo pre-shipment inspection (PSI). If there is an issue with NCV2575D2T-5R4G, 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-5R4G part is unused and in its original packaging.

Return procedure for NCV2575D2T-5R4G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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