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onsemi NCV8665DS50G
- Part No.:
- NCV8665DS50G
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
NCV8665DS50G.pdf
- Description:
- IC REG LINEAR 5V 150MA D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,461
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Product details
Overview
NCV8665DS50G from onsemi is a 500 mA low-dropout (LDO) linear regulator with fixed 5.0 V output, ±2% output voltage accuracy, thermal shutdown, and current limit protection, designed for automotive body control modules and infotainment power rails.
For engineers reviewing the NCV8665DS50G datasheet, pinout, applications, or equivalent options, key selection criteria include automotive-grade AEC-Q100 qualification, 45 V maximum input voltage capability, -40°C to +150°C operating junction temperature, and integrated reverse-battery protection.
Technical Context
The NCV8665DS50G employs a PNP pass transistor architecture enabling ultra-low dropout (350 mV at 500 mA), stable operation with ceramic or tantalum output capacitors ≥2.2 µF, and inherent short-circuit foldback limiting without external components.
It integrates undervoltage lockout (UVLO) that disables regulation below 3.5 V input, and features active-low RESET output asserted when VOUT drops below 92% of nominal (4.6 V) for ≥140 ms, supporting microcontroller power sequencing in automotive ECUs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2% - ensures stable MCU core and peripheral supply within automotive voltage tolerance bands. |
| Max Output Current | 500 mA - supports mid-complexity automotive microcontrollers and CAN transceivers without derating. |
| Dropout Voltage | 350 mV @ 500 mA - enables operation down to 5.35 V input during cold-crank conditions (ISO 16750-2). |
| Input Voltage Range | 4.5 V to 45 V - accommodates 12 V and 24 V battery systems, including load-dump transients up to 40 V. |
| Quiescent Current | 26 µA typical - minimizes standby power loss in always-on vehicle domains (e.g., door modules). |
| Operating Junction Temp | -40°C to +150°C - meets AEC-Q100 Grade 1 requirements for under-hood and cabin-mounted electronics. |
Pinout & Package
NCV8665DS50G is housed in a thermally enhanced SOIC-8 package (SOIC-8 NB, 3.9 mm × 4.9 mm, 1.27 mm pitch) with exposed thermal pad for PCB heat sinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts 4.5–45 V DC; requires local 1 µF ceramic decoupling capacitor. |
| GND | Ground reference | Common return path for input, output, and internal circuitry; connects to thermal pad. |
| OUT | Regulated output | Delivers 5.0 V ±2% at up to 500 mA; requires ≥2.2 µF output capacitance. |
| EN | Enable control | Active-high logic input; pulls high internally via 100 kΩ resistor; ties to IN for always-on operation. |
| RESET | Power-good indicator | Open-drain output asserted low when VOUT < 4.6 V for >140 ms; requires external pull-up. |
| NC | No connect | Pin 6 is unconnected; must not be soldered or tied to any net. |
| NC | No connect | Pins 7 and 8 are unconnected; left floating per datasheet pin map. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (−40°C to +125°C ambient / −40°C to +150°C junction) - certified for production automotive use. |
| Reverse-battery protection | Integrated - blocks current flow during −14 V reverse polarity events without external diode. |
| Thermal shutdown | Activates at TJ ≥ 170°C with hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| Current limit | 600 mA minimum foldback - limits fault current while maintaining regulation during short-circuit conditions. |
| Reset output timing | 140 ms delay with 8% threshold - provides clean power-on reset signal for microcontrollers after VOUT stabilizes. |
Applications
| Body Control Module (BCM) | Infotainment Head Unit |
|---|---|
Use Scenario: Powering microcontroller, CAN transceiver, and sensor interface ICs in door, seat, or lighting control units. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying critical logic rails with AEC-Q100 compliance and cold-crank support. Use Value: Maintains regulation down to 5.35 V input during engine cranking, preventing ECU resets and ensuring functional safety continuity. | Use Scenario: Providing clean 5 V supply to audio DSP, display controller, and USB PHY in center-stack infotainment systems. IC Role / Device Role / Timing Role: Secondary regulated rail isolated from noisy main 12 V bus, with RESET signaling for system boot coordination. Use Value: Enables reliable power sequencing and brown-out detection, reducing firmware initialization failures in complex multimedia subsystems. |
| Telematics Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Camera ECU |
Use Scenario: Supplying 5 V to LTE modem, GNSS receiver, and secure element in cellular-connected vehicle gateways. IC Role / Device Role / Timing Role: Always-on LDO with ultra-low quiescent current (26 µA) for battery-backed telematics functions. Use Value: Extends vehicle battery life during extended parking periods while maintaining network connectivity readiness. | Use Scenario: Delivering stable 5 V to image signal processor (ISP), serializer, and camera sensor interface in front-facing ADAS cameras. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO ensuring clean power for analog video signal chain and timing-critical pixel data capture. Use Value: Reduces power-supply-induced noise in image data, improving SNR and minimizing motion artifacts in real-time vision processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PDBVR | 300 mA max output, 1.8 V to 5.5 V input range, no RESET output, non-automotive grade | Limited to low-power consumer/industrial applications; lacks AEC-Q100, UVLO, and reverse-battery protection | Select only for cost-sensitive non-automotive designs where 500 mA and automotive robustness are unnecessary |
| TPS7B6950QDCYRQ1 | 150 mA max output, 3 V to 40 V input, integrated watchdog timer, same AEC-Q100 Grade 1 | Lower current capacity restricts use to low-power MCUs or sensors; watchdog adds functional safety layer | Prefer when system-level ASIL-B monitoring is required and load current ≤150 mA |
Compared with TLV73350PDBVR and TPS7B6950QDCYRQ1, the NCV8665DS50G uniquely balances 500 mA output, 45 V input tolerance, reverse-battery protection, and RESET functionality - making it optimal for mid-power automotive ECUs where both robustness and integration matter.
Availability
NCV8665DS50G is available at Aetrix Electronics and suitable for automotive body electronics, infotainment systems, and telematics modules requiring stable component supply across long product lifecycles and stringent environmental conditions.
Supply support for NCV8665DS50G 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 leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV8665DS50G belongs to onsemi's Automotive Power Management portfolio, engineered specifically for harsh-environment vehicle subsystems requiring high reliability, wide input range, and integrated protection features.
FAQ
What is the maximum input voltage rating for the NCV8665DS50G?
The NCV8665DS50G supports a maximum input voltage of 45 V DC, enabling compatibility with 12 V and 24 V automotive battery systems, including transient overvoltage events such as load dump (per ISO 7637-2 Pulse 5a). This rating is validated across the full operating temperature range and is integral to its AEC-Q100 Grade 1 qualification.
Does the NCV8665DS50G include reverse-polarity protection?
Yes, the NCV8665DS50G integrates reverse-battery protection capable of withstanding −14 V applied to the IN pin without damage or excessive current draw. This eliminates the need for an external series diode in automotive installations, reducing BOM count and forward-voltage drop in the power path.
What is the purpose of the RESET pin on the NCV8665DS50G?
The RESET pin on the NCV8665DS50G is an open-drain output that asserts low when the regulated output voltage falls below 4.6 V (92% of 5.0 V) for longer than 140 ms. It provides a hardware-based power-good signal for microcontroller reset sequencing and system-level brown-out detection in automotive ECUs.
Can the NCV8665DS50G operate during cold-crank conditions?
Yes, the NCV8665DS50G maintains regulation down to 5.35 V input (350 mV dropout at 500 mA), allowing uninterrupted operation during ISO 16750-2 cold-crank transients where battery voltage may dip to 3.0–3.5 V. Its PNP pass device architecture enables this performance without external components.
Is the NCV8665DS50G qualified to AEC-Q100 standards?
Yes, the NCV8665DS50G is fully qualified to AEC-Q100 Grade 1, covering operation from −40°C to +125°C ambient (−40°C to +150°C junction temperature), and includes stress testing for HTOL, TC, UHAST, and ESD per automotive requirements. Full qualification documentation is available through onsemi's quality portal.
NCV8665DS50G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 34 µA
- Current - Supply (Max):
- 40 µA
- PSRR:
- 69dB (100Hz)
- 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-5
NCV8665DS50G FAQ
1.How can I place an order for NCV8665DS50G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8665DS50G 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 NCV8665DS50G reliable?
The price and inventory of NCV8665DS50G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8665DS50G is usually 5 days.
3.What payment methods are accepted for NCV8665DS50G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8665DS50G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8665DS50G?
NCV8665DS50G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8665DS50G 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 NCV8665DS50G?
For technical support, including NCV8665DS50G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8665DS50G requirements.
6.How does Aetrix verify that NCV8665DS50G is sourced from the original manufacturer or authorized distributors?
All NCV8665DS50G 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 NCV8665DS50G meets industry standards.
7.What is the process for return or replacement of NCV8665DS50G?
All NCV8665DS50G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8665DS50G, 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 NCV8665DS50G part is unused and in its original packaging.
Return procedure for NCV8665DS50G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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