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onsemi NCV8506D2T25R4G
- Part No.:
- NCV8506D2T25R4G
- Manufacturer:
- onsemi
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
NCV8506D2T25R4G.pdf
- Description:
- IC REG LINEAR 2.5V 400MA D2PAK-7
- Quantity:
- Payment:
- Shipping:
Inventory:3,089
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Product details
Overview
NCV8506D2T25R4G from onsemi is a 250 mA, 2.5 V fixed-output low-dropout (LDO) linear regulator optimized for automotive applications, featuring ±2% output voltage accuracy, 60 µA quiescent current, and -40°C to +150°C operating temperature range; it powers infotainment microcontrollers and CAN transceiver bias rails.
For engineers reviewing the NCV8506D2T25R4G datasheet, pinout, applications, or equivalent options, key selection criteria include AEC-Q100 Grade 1 qualification, reverse-battery protection, thermal shutdown, and dropout voltage of 375 mV at 250 mA - critical for start-stop and cold-crank automotive power systems.
Technical Context
The NCV8506D2T25R4G implements a PNP-based pass transistor architecture with internal current limiting and foldback protection, enabling stable regulation under transient load steps up to 100 mA/µs. Its feedback loop is internally compensated for use with ceramic output capacitors ≥1 µF.
Designed specifically for automotive subsystems, it integrates undervoltage lockout (UVLO) that disables regulation below VIN = 2.3 V and includes active pull-down on EN pin for controlled shutdown. No external components are required for basic operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±2% - ensures precise biasing for ADC references and low-voltage logic in automotive ECUs. |
| Max Output Current | 250 mA - supports dual-core microcontrollers and small sensor clusters without derating at 125°C. |
| Dropout Voltage | 375 mV at 250 mA - maintains regulation during cold-crank events down to 4.5 V input. |
| Quiescent Current | 60 µA - enables always-on functionality in body control modules with <1 µA standby leakage. |
| Operating Temp | -40°C to +150°C - qualified per AEC-Q100 Grade 1 for under-hood placement near engine control units. |
| PSRR @ 1 kHz | 65 dB - suppresses ripple from switching pre-regulators feeding infotainment domain controllers. |
| Enable Threshold | VIN-dependent UVLO with 2.3 V turn-on - prevents erratic startup during battery recovery after cranking. |
Pinout & Package
NCV8506D2T25R4G is housed in a thermally enhanced SOT-223-4 package with exposed thermal pad (pin 4), supporting >1.5 W power dissipation at 25°C ambient when mounted on 1-in² 2-oz copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input supply | Accepts 2.7–16 V DC; internal UVLO and overvoltage clamp protect downstream circuitry. |
| 2 (GND) | Power ground | Low-impedance return path; must be connected directly to thermal pad for thermal performance. |
| 3 (VOUT) | Regulated output | 2.5 V source with ±2% tolerance; requires ≥1 µF ceramic capacitor for stability. |
| 4 (EN) | Enable control | Active-high logic input; internal pull-down ensures default-off state during power-up. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse-battery protection | Withstands -16 V applied to VIN without damage or latch-up - eliminates need for external series diode in battery-connected designs. |
| Thermal shutdown | Activates at 165°C junction temperature with hysteresis; resumes operation only after cooling to 145°C - prevents permanent silicon degradation. |
| Short-circuit current limit | Foldback-type limiting reduces output current to ~50 mA during sustained short, limiting power dissipation to safe levels. |
| AEC-Q100 Grade 1 | Qualified for automotive use from -40°C to +125°C ambient (150°C junction), including HTOL, TC, and ESD testing per stress test plan. |
Applications
| Infotainment Power Rail | CAN Transceiver Bias |
|---|---|
Use Scenario: Supplies clean 2.5 V to audio DSP cores and touch controller I/O banks in head-unit modules. IC Role / Device Role / Timing Role: Primary LDO regulator providing noise-isolated, low-ripple bias for mixed-signal SoCs. Use Value: PSRR of 65 dB at 1 kHz rejects switching noise from adjacent buck converters, preserving ADC SNR. | Use Scenario: Powers isolated CAN FD transceivers in gateway ECUs requiring stable 2.5 V reference for signal level translation. IC Role / Device Role / Timing Role: Secondary bias rail regulator ensuring accurate common-mode voltage for CANH/CANL differential signaling. Use Value: ±2% output accuracy maintains CAN bus timing margins across temperature and battery voltage variation. |
| Body Control Module Sensor Hub | ADAS Camera Module Core Supply |
Use Scenario: Delivers regulated 2.5 V to multi-sensor fusion hubs integrating ambient light, humidity, and door position sensors. IC Role / Device Role / Timing Role: Low-quiescent-current LDO enabling always-on sensor wake-up detection with <1 µA system leakage. Use Value: 60 µA IQ allows >10-year battery life in keyless entry systems using coin-cell backup. | Use Scenario: Provides core voltage to image signal processors (ISPs) in rear-view and surround-view camera modules. IC Role / Device Role / Timing Role: Precision LDO supplying ISP analog front-end and PLL circuits requiring tight voltage tolerance. Use Value: Dropout of 375 mV at 250 mA ensures uninterrupted operation during engine cranking (battery dip to 6 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73325PDBVR | 300 mA output, 55 µA IQ, but only AEC-Q200 rated (not Grade 1); no reverse-battery protection. | Suitable for non-safety-critical cabin modules; not approved for engine bay or powertrain locations. | Select only if Grade 1 qualification is not required and reverse-battery risk is mitigated externally. |
| TPS7B8225QDCYRQ1 | 250 mA, 2.5 V, AEC-Q100 Grade 1, but higher dropout (450 mV) and 75 µA IQ. | Compatible for same PCB footprint but requires larger output capacitor (≥2.2 µF) for stability. | Prefer when thermal margin is available and tighter PSRR is not needed; verify layout compatibility with DCY package. |
Compared with NCV8506D2T25R4G, TLV73325PDBVR offers higher current but lacks automotive-grade robustness, while TPS7B8225QDCYRQ1 matches qualification level but trades off dropout and PSRR - making NCV8506D2T25R4G optimal for space-constrained, high-reliability 2.5 V bias rails.
Availability
NCV8506D2T25R4G is available at Aetrix Electronics and suitable for automotive infotainment systems, CAN gateway modules, body control units, and ADAS camera power supplies requiring stable component supply across extended temperature and long product lifecycles.
Supply support for NCV8506D2T25R4G 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV8506D2T25R4G belongs to onsemi's automotive-grade LDO portfolio, engineered specifically for harsh-environment power management in engine control, safety, and connectivity systems where reliability and qualification compliance are mandatory.
FAQ
What is the maximum input voltage rating for the NCV8506D2T25R4G?
The NCV8506D2T25R4G supports an absolute maximum input voltage of 16 V DC. This rating includes transient overvoltage conditions typical in automotive 12 V systems, such as load dump spikes up to 40 V for 40 ms - which the device withstands via integrated clamping circuitry. Operation above 16 V risks permanent damage to the internal pass element.
Does the NCV8506D2T25R4G require an external capacitor for stability?
Yes, the NCV8506D2T25R4G requires a minimum 1 µF ceramic output capacitor placed within 5 mm of the VOUT and GND pins for loop stability. The device is internally compensated for this value; using smaller or higher-ESR capacitors may cause oscillation or poor transient response. Input capacitance is recommended but not mandatory.
Is the NCV8506D2T25R4G pin-compatible with other variants in the NCV8506 family?
No, the NCV8506D2T25R4G is not pin-compatible with other NCV8506 variants such as NCV8506D2T33R4G (3.3 V) or NCV8506D2T50R4G (5.0 V), despite sharing the same SOT-223-4 package. Pin assignments differ: the EN pin is located on pin 4 for the 2.5 V version but on pin 1 for some alternate variants - requiring PCB redesign for substitution.
How does reverse-battery protection work in the NCV8506D2T25R4G?
The NCV8506D2T25R4G incorporates a dedicated reverse-polarity protection circuit that blocks current flow when VIN is driven negative relative to GND. It withstands -16 V continuously without damage or output leakage, eliminating the need for an external series Schottky diode. This feature reduces BOM count and improves efficiency in battery-connected automotive modules.
What thermal derating applies to the NCV8506D2T25R4G at 125°C ambient?
At 125°C ambient temperature, the NCV8506D2T25R4G delivers approximately 180 mA continuous output current before thermal shutdown activates. This derating results from its 165°C junction trip point and thermal resistance θJA of 65°C/W in standard 2-layer FR-4 layout. Adding a 1-in² thermal pad significantly improves performance, enabling full 250 mA capability up to 105°C ambient.
NCV8506D2T25R4G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 400mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- 45 mA
- PSRR:
- -
- Control Features:
- Reset
- Protection Features:
- Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-7
NCV8506D2T25R4G FAQ
1.How can I place an order for NCV8506D2T25R4G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8506D2T25R4G 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 NCV8506D2T25R4G reliable?
The price and inventory of NCV8506D2T25R4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8506D2T25R4G is usually 5 days.
3.What payment methods are accepted for NCV8506D2T25R4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8506D2T25R4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8506D2T25R4G?
NCV8506D2T25R4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8506D2T25R4G 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 NCV8506D2T25R4G?
For technical support, including NCV8506D2T25R4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8506D2T25R4G requirements.
6.How does Aetrix verify that NCV8506D2T25R4G is sourced from the original manufacturer or authorized distributors?
All NCV8506D2T25R4G 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 NCV8506D2T25R4G meets industry standards.
7.What is the process for return or replacement of NCV8506D2T25R4G?
All NCV8506D2T25R4G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8506D2T25R4G, 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 NCV8506D2T25R4G part is unused and in its original packaging.
Return procedure for NCV8506D2T25R4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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