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onsemi NCV8664CDT33RKG
- Part No.:
- NCV8664CDT33RKG
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
NCV8664CDT33RKG.pdf
- Description:
- IC REG LINEAR 3.3V 150MA DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:1,755
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Product details
Overview
NCV8664CDT33RKG from onsemi is a precision 3.3 V fixed-output, low-dropout linear regulator delivering up to 150 mA output current with 22 µA typical quiescent current, 600 mV max dropout at full load, and ±2.0% output accuracy over −40°C to +150°C - designed for automotive power rail conditioning in engine control units and body electronics.
For engineers reviewing the NCV8664CDT33RKG datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage range (4.5 V to 45 V), reverse-voltage protection (−42 V), thermal shutdown threshold (150°C), and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The NCV8664CDT33RKG uses a PNP pass transistor controlled by an error amplifier with a bandgap reference to maintain stable 3.3 V regulation across wide input (4.5–45 V) and temperature (−40°C to +150°C) ranges. Its internal foldback current limit and thermal shutdown (150°C trigger) enable robust fault handling without external components.
It achieves ultra-low quiescent current via low-leakage process technology and light-load current management, enabling always-on functionality in automotive modules where standby power budget is critical. The device requires no external compensation and supports ceramic, tantalum, or aluminum electrolytic output capacitors with ESR constraints defined in stability curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2.0% over full temperature and load range - ensures reliable MCU core/logic supply under automotive thermal stress. |
| Max Output Current | 150 mA continuous - sufficient for powering microcontrollers, sensors, and CAN transceivers in distributed ECUs. |
| Dropout Voltage | 600 mV max at 150 mA - enables operation down to 3.9 V input, supporting cold-crank scenarios in 12 V systems. |
| Quiescent Current | 22 µA typical at TJ = 25°C - minimizes battery drain during vehicle sleep mode, meeting OEM quiescent power targets. |
| Input Voltage Range | 4.5 V to 45 V DC - accommodates load-dump transients (up to 40 V) and start-stop battery fluctuations. |
| Reverse Voltage Protection | −42 V - prevents damage during battery misconnection or jump-start polarity reversal. |
| Junction Temp Range | −40°C to +150°C - certified for under-hood placement per AEC-Q100 Grade 1 requirements. |
Pinout & Package
DPAK-3 (TO-252) package with exposed tab for thermal dissipation; 6.10 mm × 6.54 mm footprint, 2.28 mm height, Pb-free (RoHS-compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Unregulated Input | Accepts 4.5–45 V DC; connects to battery or post-ignition rail; must be decoupled with ≥100 nF ceramic capacitor. |
| 2 (GND) | Ground Reference | Primary ground return path; electrically tied to substrate and thermal tab; requires low-impedance PCB connection. |
| 3 (VOUT) | Regulated Output | Delivers stable 3.3 V; requires ≥22 µF output capacitor (tantalum or ceramic) for stability per Figure 3. |
| 4 / Tab (GND) | Thermal & Electrical Ground | Exposed copper tab serves as secondary GND and primary heat sink interface; must be soldered to ≥100 mm² copper pour. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 1 (−40°C to +125°C ambient) with PPAP capability - meets automotive production release requirements. |
| EMC Compliant | Validated for automotive electromagnetic compatibility per ISO 11452 and CISPR 25 - reduces need for external filtering. |
| Integrated Fault Protection | Reverse-voltage (−42 V), short-circuit, overcurrent, and thermal shutdown - eliminates discrete protection circuitry. |
| No External Compensation | Stable with standard 22 µF output capacitor - simplifies layout and reduces BOM count in space-constrained modules. |
| Pb-Free & RoHS | Halogen-free, lead-free DPAK package (suffix "G") - compliant with global automotive environmental mandates. |
Applications
| Engine Control Unit (ECU) Power | Body Control Module (BCM) Supply |
|---|---|
Use Scenario: Powers 3.3 V microcontroller, EEPROM, and analog front-end in gasoline/diesel engine management systems exposed to under-hood temperatures up to 125°C ambient. IC Role / Device Role / Timing Role: Primary LDO supplying regulated core voltage to safety-critical MCU; provides clean, low-noise bias independent of battery ripple. Use Value: 22 µA quiescent current extends battery life during extended parking; 45 V max input withstands 40 V load-dump transients without shutdown. | Use Scenario: Supplies 3.3 V logic rails for door module controllers managing window lifts, mirror adjustment, and interior lighting in modern vehicle architectures. IC Role / Device Role / Timing Role: Secondary LDO for non-safety subsystems; interfaces directly with LIN/CAN transceivers requiring stable 3.3 V reference. Use Value: ±2.0% output accuracy ensures reliable ADC reference and digital I/O thresholds; thermal shutdown prevents latch-up during high-ambient summer conditions. |
| Advanced Driver Assistance System (ADAS) Sensor Hub | Telematics Control Unit (TCU) Standby Rail |
Use Scenario: Powers image signal processor and radar preprocessing ASIC in compact ADAS camera modules mounted near windshield. IC Role / Device Role / Timing Role: Low-noise, low-Iq LDO for analog sensor signal chain; rejects switching noise from nearby DC/DC converters. Use Value: 67 dB PSRR at 100 Hz suppresses ripple from buck regulators; 600 mV dropout enables operation during cold-crank when battery dips to 6 V. | Use Scenario: Maintains real-time clock, GPS backup memory, and cellular modem wake-up circuitry during vehicle sleep mode (CAN bus off). IC Role / Device Role / Timing Role: Always-on LDO providing uninterrupted 3.3 V to RTC and SRAM; monitors ignition status via VIN sensing. Use Value: 22 µA Iq meets OEM <30 µA total module sleep current requirement; −42 V reverse protection guards against jump-start errors. |
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 |
|---|---|---|---|
| NCV8664CST33T3G | SOT-223 package (smaller footprint, higher RJA = 109°C/W vs. DPAK's 87.4°C/W); identical electrical specs. | Better suited for space-constrained PCBs where thermal mass is limited; requires larger copper area for same power dissipation. | Select when board area is prioritized over thermal performance; verify junction temp rise with actual load and layout. |
| TLV73333PDBVR | Lower max current (300 mA), lower dropout (250 mV @ 300 mA), but only AEC-Q100 Grade 3 (−40°C to +85°C ambient); no reverse-voltage protection. | Not qualified for under-hood use; lacks −42 V reverse protection required for battery-connected automotive rails. | Consider only for cabin/non-thermal zones; requires external reverse-protection diode if used in battery-fed circuits. |
Compared with NCV8664CDT33RKG, the SOT-223 variant trades thermal efficiency for size, while the TLV73333PDBVR offers higher current but sacrifices automotive-grade ruggedness and reverse-voltage hardening - making NCV8664CDT33RKG the sole choice for AEC-Q100-compliant, battery-direct applications demanding full fault coverage.
Availability
NCV8664CDT33RKG is available at Aetrix Electronics and suitable for automotive engine control units, body electronics modules, and ADAS sensor hubs requiring stable component supply across extended temperature and high-reliability environments.
Supply support for NCV8664CDT33RKG 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 NCV8664C series belongs to onsemi's automotive-qualified linear regulator product line, engineered specifically for harsh-environment power management in engine, chassis, and safety-critical electronic control units.
FAQ
What is the maximum input voltage rating for NCV8664CDT33RKG?
The NCV8664CDT33RKG supports a DC input voltage range from 4.5 V to 45 V, with absolute maximum rating of −42 V for reverse polarity events. This allows safe operation during automotive load-dump transients and battery misconnection scenarios without external protection circuitry.
Does NCV8664CDT33RKG require external capacitors for stability?
Yes, NCV8664CDT33RKG requires a minimum 100 nF ceramic input capacitor (CIN) and a 22 µF output capacitor (COUT), as specified in Figure 3 of the datasheet. Tantalum, aluminum electrolytic, or ceramic types are acceptable, but ESR must fall within the stable region shown in Figures 13 and 14.
Is NCV8664CDT33RKG qualified for automotive applications?
Yes, NCV8664CDT33RKG carries the NCV prefix and is AEC-Q100 qualified (Grade 1), PPAP-capable, and EMC-compliant. It meets automotive reliability, thermal, and electromagnetic standards for under-hood and chassis-mounted electronic control units.
What thermal performance can be expected from the DPAK package of NCV8664CDT33RKG?
In a standard 1 oz copper layout with 100 mm² thermal pad, the NCV8664CDT33RKG in DPAK achieves RJA = 87.4°C/W. With proper heatsinking, it delivers full 150 mA output up to +125°C ambient; derating is required above that per Figure 8 and thermal equations in the datasheet.
How does the quiescent current of NCV8664CDT33RKG behave under varying load conditions?
NCV8664CDT33RKG maintains ultra-low quiescent current: 22 µA typical at no load and 25°C, rising only to ~30 µA at −40°C and remaining stable up to 150 mA load (Figure 19–20). This enables predictable battery drain modeling for automotive sleep-mode compliance.
NCV8664CDT33RKG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
NCV8664CDT33RKG FAQ
1.How can I place an order for NCV8664CDT33RKG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8664CDT33RKG 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 NCV8664CDT33RKG reliable?
The price and inventory of NCV8664CDT33RKG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8664CDT33RKG is usually 5 days.
3.What payment methods are accepted for NCV8664CDT33RKG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8664CDT33RKG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8664CDT33RKG?
NCV8664CDT33RKG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8664CDT33RKG 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 NCV8664CDT33RKG?
For technical support, including NCV8664CDT33RKG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8664CDT33RKG requirements.
6.How does Aetrix verify that NCV8664CDT33RKG is sourced from the original manufacturer or authorized distributors?
All NCV8664CDT33RKG 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 NCV8664CDT33RKG meets industry standards.
7.What is the process for return or replacement of NCV8664CDT33RKG?
All NCV8664CDT33RKG units undergo pre-shipment inspection (PSI). If there is an issue with NCV8664CDT33RKG, 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 NCV8664CDT33RKG part is unused and in its original packaging.
Return procedure for NCV8664CDT33RKG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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