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onsemi NCV8664D50R2G
- Part No.:
- NCV8664D50R2G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
NCV8664D50R2G.pdf
- Description:
- IC REG LINEAR 5V 150MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,341
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Product details
Overview
NCV8664D50R2G from onsemi is a precision 5.0 V fixed-output, low-dropout linear regulator with 150 mA output current capability, 600 mV maximum dropout at full load, ±2.0% output accuracy over −40°C to +150°C, and 30 µA maximum quiescent current at 100 µA load - designed for automotive body control modules requiring stable low-power voltage regulation.
For engineers reviewing the NCV8664D50R2G datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, SOIC-8 fused package details, AEC-Q100 qualification evidence, thermal shutdown behavior, and real-world substitution guidance for automotive power rail design.
Technical Context
The NCV8664D50R2G uses a PNP pass transistor controlled by an error amplifier with a bandgap reference to deliver precise 5.0 V regulation. Its internal foldback current protection activates during overcurrent events, reducing output current limit to mitigate thermal stress.
It operates across 4.5 V to 45 V input range and includes integrated reverse-voltage protection (−42 V), short-circuit/overcurrent fault response, and thermal shutdown at 150°C. No external components are required for basic functionality or protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V ±2.0% - ensures stable microcontroller I/O supply under wide temperature and line variation. |
| Max Dropout Voltage | 600 mV at 150 mA - enables operation with VIN as low as 5.6 V while maintaining regulation. |
| Quiescent Current | 30 µA max at 100 µA load - critical for always-on automotive circuits minimizing battery drain. |
| Input Voltage Range | 4.5 V to 45 V - supports 12 V and 24 V vehicle systems including cold-crank and load-dump transients. |
| Thermal Shutdown | 150°C threshold - protects die during sustained overload or poor PCB heat sinking. |
| Output Capacitor | ≥10 µF with ESR ≤9 Ω - guarantees stability without requiring specialized low-ESR ceramics. |
| AEC-Q100 Grade | Qualified to Grade 1 (−40°C to +125°C ambient) - validated for under-hood automotive use. |
Pinout & Package
NCV8664D50R2G is housed in an SOIC-8 fused package (Case 751-07), Pb-free, with exposed thermal pad not connected internally. The package provides 145°C/W junction-to-ambient thermal resistance with standard 1 oz. copper layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No connection - must be left floating or tied to GND per layout best practice; no internal function. |
| 2 | VIN | Main unregulated input (4.5–45 V); connects to bulk capacitor and transient protection network. |
| 3 | GND | Ground reference and substrate connection; requires low-impedance PCB plane for noise immunity. |
| 4 | VOUT | Regulated 5.0 V output; feeds downstream logic, sensors, or CAN transceivers directly. |
| 5–8 | NC | All no-connect pins - must remain unconnected; not internally bonded or functional. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 qualified and PPAP capable - meets OEM requirements for production automotive ECUs. |
| Reverse-voltage protection | Withstands −42 V input - eliminates need for external series diode in battery-reversal-prone installations. |
| Foldback current limiting | Reduces short-circuit current as VOUT collapses - limits power dissipation during fault conditions. |
| EMC compliance | Passes 33 dBm conducted susceptibility per IEC62132-4 - reduces filtering component count in noisy environments. |
| Pb-free packaging | RoHS-compliant SOIC-8 fused (G suffix) - supports global manufacturing and end-of-life compliance. |
Applications
| Body Control Module (BCM) | Powertrain Sensor Interface |
|---|---|
|
Use Scenario: Supplies 5.0 V to microcontroller peripherals and LIN transceivers in door module ECUs. IC Role / Device Role / Timing Role: Primary low-noise, always-on LDO delivering regulated rail for safety-critical wake-up logic. Use Value: 30 µA quiescent current prevents excessive battery discharge during vehicle sleep mode. |
Use Scenario: Powers crankshaft position sensor signal conditioning circuitry in engine control units. IC Role / Device Role / Timing Role: Stable 5.0 V reference source for analog front-end amplifiers and ADC biasing. Use Value: ±2.0% output accuracy ensures consistent sensor offset calibration across −40°C to +125°C. |
| Telematics Control Unit (TCU) | Advanced Driver Assistance System (ADAS) Camera Power |
|
Use Scenario: Provides clean 5.0 V supply to GPS/GNSS receiver ICs and cellular modem baseband processors. IC Role / Device Role / Timing Role: Secondary regulated rail isolated from noisy main 12 V bus via LDO stage. Use Value: 600 mV dropout allows operation during 9 V cold-crank events without brownout. |
Use Scenario: Powers image signal processor (ISP) I/O banks and serializer ICs in rear-view camera modules. IC Role / Device Role / Timing Role: Low-noise, thermally robust local regulator decoupling high-speed digital interfaces. Use Value: Integrated thermal shutdown prevents latch-up during enclosure temperature excursions above 125°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8664ST50T3G | SOT-223 package; RJA = 99°C/W vs. 145°C/W; same electrical specs and pinout (except pin 1 = VIN, not NC). | Better thermal performance in space-constrained layouts; requires different footprint and soldering profile. | Select when board-level thermal management is limited and higher power dissipation is expected. |
| TLV73350PDBVR | 300 mA output; 250 mV dropout at 300 mA; 50 µA typical IQ; not AEC-Q100 qualified. | Lacks automotive qualification and reverse-voltage protection; unsuitable for under-hood deployment. | Consider only for non-automotive industrial or consumer applications where cost and size outweigh qualification needs. |
Compared with NCV8664ST50T3G, the NCV8664D50R2G trades thermal performance for smaller footprint and compatibility with SOIC-8 assembly lines; compared with TLV73350PDBVR, it delivers automotive-grade reliability and fault resilience at the expense of higher dropout and lower current rating.
Availability
NCV8664D50R2G is available at Aetrix Electronics and suitable for automotive body control modules, telematics units, and ADAS camera power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for NCV8664D50R2G 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 (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics for automotive, industrial, cloud, and IoT applications.
The NCV8664 series belongs to onsemi's automotive-grade power management portfolio, engineered specifically for harsh-environment voltage regulation in engine control, chassis, and infotainment systems.
FAQ
What is the maximum input voltage rating for NCV8664D50R2G?
The NCV8664D50R2G supports a DC input operating voltage from 4.5 V to +45 V, with absolute maximum rating of −42 V for reverse-voltage tolerance. This range accommodates 12 V and 24 V automotive systems, including load-dump transients up to 40 V and cold-crank dips down to 4.5 V - all while maintaining 5.0 V regulation at the output.
Does NCV8664D50R2G require external capacitors for stability?
Yes, NCV8664D50R2G requires an input capacitor (≥100 nF ceramic) and an output capacitor (≥10 µF with ESR ≤9 Ω) for guaranteed stability across temperature and load. The SOIC-8 fused variant does not relax these requirements - stability is validated only within those COUT/ESR boundaries per the datasheet Figure 4 and Section 9.
Is NCV8664D50R2G pin-compatible with NCV4264-2?
No, NCV8664D50R2G is not pin-compatible with NCV4264-2. While functionally compatible and usable as a drop-in replacement in many designs due to identical 5.0 V output and protection features, the SOIC-8 fused package has different pin assignments: NCV4264-2 uses pin 1 as VIN, whereas NCV8664D50R2G uses pin 1 as NC and pin 2 as VIN - requiring PCB layout revision.
What is the thermal shutdown behavior of NCV8664D50R2G?
The NCV8664D50R2G enters thermal shutdown at approximately 150°C junction temperature, disabling the pass transistor until die temperature falls below the hysteresis threshold (~130°C). Recovery is automatic and does not require reset - this protects against permanent damage during sustained overload or inadequate heatsinking in confined enclosures.
Can NCV8664D50R2G be used in non-automotive applications?
Yes, NCV8664D50R2G can be used in industrial and medical applications where its 45 V input range, low IQ, and robust protection features are beneficial - but its AEC-Q100 qualification and PPAP documentation are specific to automotive use cases. For non-automotive designs, consider cost and availability trade-offs versus non-automotive-grade alternatives like MC78LC05.
NCV8664D50R2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 29 µA
- Current - Supply (Max):
- 30 µA
- PSRR:
- 67dB (100Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
NCV8664D50R2G FAQ
1.How can I place an order for NCV8664D50R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8664D50R2G 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 NCV8664D50R2G reliable?
The price and inventory of NCV8664D50R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8664D50R2G is usually 5 days.
3.What payment methods are accepted for NCV8664D50R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8664D50R2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8664D50R2G?
NCV8664D50R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8664D50R2G 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 NCV8664D50R2G?
For technical support, including NCV8664D50R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8664D50R2G requirements.
6.How does Aetrix verify that NCV8664D50R2G is sourced from the original manufacturer or authorized distributors?
All NCV8664D50R2G 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 NCV8664D50R2G meets industry standards.
7.What is the process for return or replacement of NCV8664D50R2G?
All NCV8664D50R2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8664D50R2G, 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 NCV8664D50R2G part is unused and in its original packaging.
Return procedure for NCV8664D50R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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