My Inquiry
My Account
onsemi NCV2575D2T-ADJG
- Part No.:
- NCV2575D2T-ADJG
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
NCV2575D2T-ADJG.pdf
- Description:
- IC REG BUCK ADJ 1A D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,340
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCV2575D2T-ADJG from onsemi is an automotive-grade monolithic step-down (buck) switching regulator IC with adjustable output voltage (1.23 V to 37 V), 1.0 A guaranteed output current, 4.75 V to 40 V wide input range, and integrated 1.0 A NPN switch. It delivers high efficiency in battery-powered and industrial power supply applications where thermal robustness and AEC-Q100 compliance are required.
For engineers reviewing the NCV2575D2T-ADJG datasheet, pinout, applications, or equivalent options, this page provides verified technical context, confirmed pin functions, real-world application mappings, and validated alternative parts for automotive and industrial DC-DC design.
Technical Context
The NCV2575D2T-ADJG implements a fixed-frequency (52 kHz) voltage-mode buck converter architecture with internal 1.23 V bandgap reference, error amplifier, PWM comparator, and 1.0 A NPN output switch. Its feedback pin (Pin 4) accepts direct resistor-divider input for precise output programming without internal divider.
It features cycle-by-cycle current limiting, thermal shutdown, TTL-compatible ON/OFF control (Pin 5), and 80 µA standby quiescent current. The device operates across −40°C to +125°C junction temperature and meets AEC-Q100 Grade 1 requirements for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.0 A continuous - supports mid-power loads without external current boosting |
| Input Voltage Range | 4.75 V to 40 V - compatible with 12 V/24 V automotive batteries and industrial unregulated rails |
| Output Voltage Range | 1.23 V to 37 V ±4% - set externally via R1/R2; enables flexible system-level voltage scaling |
| Switching Frequency | 52 kHz (±10%) - balances EMI, inductor size, and efficiency; drops to ~18 kHz under overload for self-protection |
| Feedback Reference | 1.23 V ±2% (−40°C to +125°C) - stable reference for precision output regulation across temperature |
| Quiescent Current | 5.0–9.0 mA (active), 15–200 µA (standby) - enables low-power sleep modes in always-on automotive modules |
| Thermal Protection | Thermal shutdown at TJ ≥ 150°C - prevents permanent damage during sustained overload or poor heatsinking |
Pinout & Package
D2PAK (TO-263-5) package with exposed thermal pad connected to Pin 3 (GND); heatsink surface electrically tied to ground for optimal thermal performance and EMI control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Vin | Positive input supply | Accepts 4.75–40 V unregulated DC; requires local low-ESR bypass capacitor (e.g., 100 µF) to suppress switching transients |
| 2 - Output | Emiter of internal NPN switch | Drives inductor directly; saturation voltage ≤1.3 V ensures low conduction loss at 1.0 A |
| 3 - GND | Circuit ground / thermal pad connection | Common return path and primary thermal interface; must be soldered to large copper area for RθJA = 70°C/W |
| 4 - Feedback | Error amplifier non-inverting input | Direct connection point for external R1/R2 divider; senses output to regulate VOUT = 1.23 × (1 + R2/R1) |
| 5 - ON/OFF | Logic-controlled enable/disable | TTL-compatible: <1.2 V = ON, >2.2 V = OFF; draws only 80 µA in shutdown mode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 1 (−40°C to +125°C) - certified for under-hood automotive applications with PPAP support |
| Integrated 1.0 A Switch | Eliminates need for external MOSFET or transistor - reduces BOM count and layout complexity |
| Fixed 52 kHz Oscillator | Enables predictable EMI profile and simplifies filter design vs. variable-frequency alternatives |
| Low Standby Current | 80 µA typical shutdown current - extends battery life in always-on vehicle subsystems |
| Robust Protection | Cycle-by-cycle current limit + thermal shutdown - sustains operation under short-circuit or overtemperature faults |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Power Supply |
|---|---|
|
Use Scenario: Regulates 12 V battery input to 5 V for microcontroller, CAN transceiver, and sensor interfaces in door modules or lighting controllers. IC Role / Device Role / Timing Role: Primary buck regulator providing stable, noise-immune 5 V rail with fast load transient response. Use Value: AEC-Q100 qualification ensures reliability across temperature cycling and vibration; 40 V max input withstands load-dump transients. |
Use Scenario: Generates isolated 3.3 V or 5 V from 24 V industrial bus for FPGA configuration, ADC reference, and digital I/O logic. IC Role / Device Role / Timing Role: High-efficiency pre-regulator preceding LDOs to minimize heat dissipation in confined enclosures. Use Value: 77% efficiency at 1.0 A reduces thermal load; D2PAK package allows direct mounting to metal chassis for passive cooling. |
| Battery-Powered Telematics Unit | On-Board Charger Auxiliary Supply |
|
Use Scenario: Powers GPS module, cellular modem, and MCU from 12 V lead-acid battery with deep-sleep capability during vehicle off-state. IC Role / Device Role / Timing Role: Adjustable-output buck converter enabling dynamic voltage scaling and ultra-low-IQ shutdown. Use Value: 80 µA standby current minimizes parasitic drain; wide input range accommodates battery voltage sag down to 4.75 V. |
Use Scenario: Supplies gate drivers, MCU, and communication ICs in EV on-board chargers using 400 V DC-link-derived 12 V intermediate rail. IC Role / Device Role / Timing Role: Robust front-end DC-DC stage handling high-voltage transients and thermal stress during charging cycles. Use Value: 40 V absolute max input rating and thermal shutdown protect against overvoltage events; D2PAK thermal pad improves long-term reliability. |
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-ADJ | Commercial-grade (−40°C to +125°C), same pinout and electrical specs, but not AEC-Q100 qualified or PPAP-capable | Suitable for industrial or consumer designs without automotive qualification requirements | Select when cost sensitivity outweighs automotive certification needs and ambient conditions remain within commercial temp range |
| MP1584EN-LF-Z | Higher switching frequency (1.5 MHz), smaller external components, but lower max input (28 V) and no AEC-Q100 grade | Better suited for space-constrained PCBs; lacks automotive qualification and 40 V input tolerance | Prefer for compact, non-automotive applications needing faster transient response and reduced inductor size |
Compared with LM2575D2T-ADJ, NCV2575D2T-ADJG adds automotive qualification and tighter process controls; versus MP1584EN-LF-Z, it trades higher frequency for superior input voltage range and automotive reliability-making it optimal for under-hood and harsh-environment use.
Availability
NCV2575D2T-ADJG is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and battery-powered telematics requiring stable component supply, long lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for NCV2575D2T-ADJG 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 innovation, delivering silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV2575D2T-ADJG belongs to onsemi's automotive-qualified analog power portfolio, designed specifically for robust, high-reliability DC-DC conversion in safety-critical and thermally demanding vehicle subsystems.
FAQ
What is the maximum input voltage rating for the NCV2575D2T-ADJG?
The NCV2575D2T-ADJG has an absolute maximum input voltage of 45 V and a recommended operating maximum of 40 V. This allows safe operation across automotive load-dump transients (up to ISO 7637-2 Pulse 5a) and industrial 24 V/48 V systems with margin. Exceeding 45 V risks permanent damage per the Absolute Maximum Ratings table.
How do I calculate the output voltage for the NCV2575D2T-ADJG?
The NCV2575D2T-ADJG output voltage is set by an external resistor divider: VOUT = 1.23 V × (1 + R2/R1). R1 should be between 1.0 kΩ and 5.0 kΩ; R2 is selected accordingly. For example, R1 = 1.8 kΩ and R2 = 9.88 kΩ yields VOUT ≈ 8.0 V. The 1.23 V reference is accurate to ±2% over −40°C to +125°C.
Does the NCV2575D2T-ADJG require a heatsink in typical operation?
The NCV2575D2T-ADJG uses a D2PAK package with an exposed thermal pad tied to Pin 3 (GND). With proper PCB copper area (≥4 cm² 2-oz copper), no external heatsink is needed for 1.0 A output at ambient ≤60°C. Thermal resistance is 70°C/W junction-to-ambient; derating is required above 60°C ambient or at full load with limited copper.
What protection features does the NCV2575D2T-ADJG include?
The NCV2575D2T-ADJG integrates cycle-by-cycle current limiting (peak limit 1.4–3.2 A), thermal shutdown (activates at TJ ≥ 150°C), and automatic frequency foldback (~18 kHz) during overload. These features prevent catastrophic failure during short circuits, overloads, or inadequate heatsinking-enabling robust field operation without external protection circuitry.
Is the NCV2575D2T-ADJG pin-compatible with the LM2575D2T-ADJ?
Yes, the NCV2575D2T-ADJG is pin-compatible and functionally identical to the LM2575D2T-ADJ in the D2PAK-5 package, including identical pinout, electrical characteristics, and external component requirements. The key distinction is automotive qualification: NCV prefix denotes AEC-Q100 Grade 1 compliance, PPAP capability, and enhanced process controls-not a mechanical or functional change.
NCV2575D2T-ADJG 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:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.75V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.23V
- Voltage - Output (Max):
- 37V
- 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-ADJG FAQ
1.How can I place an order for NCV2575D2T-ADJG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV2575D2T-ADJG 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-ADJG reliable?
The price and inventory of NCV2575D2T-ADJG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV2575D2T-ADJG is usually 5 days.
3.What payment methods are accepted for NCV2575D2T-ADJG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV2575D2T-ADJG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV2575D2T-ADJG?
NCV2575D2T-ADJG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV2575D2T-ADJG 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-ADJG?
For technical support, including NCV2575D2T-ADJG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV2575D2T-ADJG requirements.
6.How does Aetrix verify that NCV2575D2T-ADJG is sourced from the original manufacturer or authorized distributors?
All NCV2575D2T-ADJG 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-ADJG meets industry standards.
7.What is the process for return or replacement of NCV2575D2T-ADJG?
All NCV2575D2T-ADJG units undergo pre-shipment inspection (PSI). If there is an issue with NCV2575D2T-ADJG, 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-ADJG part is unused and in its original packaging.
Return procedure for NCV2575D2T-ADJG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCV2575D2T-ADJG Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
