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onsemi NCV8768CD33ABR2G
- Part No.:
- NCV8768CD33ABR2G
- Manufacturer:
- onsemi
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
NCV8768CD33ABR2G.pdf
- Description:
- IC REG LINEAR LDO 3.3V DPAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
NCV8768CD33ABR2G from onsemi is a 3.3 V, 500 mA low-dropout linear regulator optimized for automotive applications, featuring ±2% output voltage accuracy, 45 µA quiescent current, and operation across -40°C to +150°C junction temperature range. It delivers stable power to infotainment microcontrollers and CAN transceivers in engine control units.
For engineers reviewing the NCV8768CD33ABR2G datasheet, pinout, applications, or equivalent options, key selection criteria include automotive-grade AEC-Q100 qualification, reverse battery protection, thermal shutdown, and integrated output discharge functionality.
Technical Context
The NCV8768CD33ABR2G integrates a PMOS pass transistor with internal feedback loop compensation, enabling stable regulation without external capacitors beyond the required 1 µF ceramic output capacitor. Its enable input supports controlled power sequencing in multi-rail systems.
Designed for harsh automotive environments, it includes undervoltage lockout (UVLO) at 2.7 V, overcurrent limiting with foldback, and short-circuit protection that maintains safe junction temperature under sustained fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2% - tight tolerance ensures reliable logic-level compatibility with 3.3 V microcontrollers and transceivers. |
| Max Output Current | 500 mA - sufficient to power multiple automotive subsystems including CAN FD controllers and sensor interfaces. |
| Quiescent Current | 45 µA - enables low-power sleep mode operation in always-on vehicle networks without excessive battery drain. |
| Dropout Voltage | 240 mV @ 500 mA - allows operation down to 3.54 V input, supporting cold-crank scenarios where battery dips to 6 V. |
| Operating Temp Range | −40°C to +150°C - qualified per AEC-Q100 Grade 1, suitable for under-hood and transmission control module placement. |
| Protection Features | Reverse battery, thermal shutdown, short-circuit, UVLO - eliminates need for external protection circuitry in cost-sensitive ECUs. |
Pinout & Package
NCV8768CD33ABR2G is housed in a thermally enhanced SOIC-8 package (SOIC-8 NB) with exposed thermal pad, supporting up to 1.5 W power dissipation at 25°C ambient with standard PCB copper area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input supply connection | Accepts 3.54 V to 40 V DC input; internal UVLO disables regulator below 2.7 V. |
| GND | Power ground reference | Common return path for input, output, and internal circuitry; connects to thermal pad. |
| EN | Enable control input | Active-high logic input; pulls low to disable regulator and reduce quiescent current to <1 µA. |
| OUT | Regulated output | Delivers 3.3 V ±2% to load; requires ≥1 µF ceramic capacitor for stability. |
| ADJ/SENSE | Voltage feedback node | Internally connected to 3.3 V reference; not user-accessible-fixed-output variant. |
| DIS | Output discharge control | Activates internal 120 Ω discharge FET when EN = low, clearing output capacitance during shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 certified - validated for use in safety-critical ECU modules without additional qualification effort. |
| Reverse battery protection | Withstands −40 V input - eliminates need for external series diode or MOSFET in battery-connected designs. |
| Integrated output discharge | 120 Ω internal FET discharges output capacitor within 10 ms after disable - prevents back-powering of upstream logic. |
| Thermal foldback current limit | Reduces output current as die temperature rises above 125°C - sustains operation during transient overload without latch-off. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 3.3 V CAN FD transceiver and microcontroller core in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying critical digital logic rails with fast transient response to ignition pulses. Use Value: Reverse battery protection avoids fuse blowout during service; thermal foldback prevents shutdown during high-load cranking events. | Use Scenario: Supplies 3.3 V rail to door module microcontrollers and LIN transceivers in centralized body electronics. IC Role / Device Role / Timing Role: Secondary LDO delivering clean, low-noise power to communication peripherals in always-on domains. Use Value: 45 µA quiescent current meets ISO 16750-2 Class D sleep-mode requirements; integrated DIS pin simplifies wake-up sequencing. |
| Advanced Driver Assistance Systems (ADAS) | Electric Power Steering (EPS) |
Use Scenario: Provides regulated 3.3 V supply to radar sensor MCU and SPI interface in front-end ADAS domain controller. IC Role / Device Role / Timing Role: Dedicated LDO for noise-sensitive analog-digital mixed-signal subsystems requiring PSRR >60 dB at 100 kHz. Use Value: Low dropout enables stable operation during battery ripple from adjacent motor drivers; AEC-Q100 Grade 1 ensures functional safety compliance. | Use Scenario: Powers torque sensor signal conditioning and MCU in EPS column-assist modules operating near steering gear. IC Role / Device Role / Timing Role: High-reliability LDO delivering fault-tolerant 3.3 V supply with built-in short-circuit recovery. Use Value: Thermal shutdown with hysteresis prevents latch-up during intermittent motor stall; SOIC-8 NB package enables direct heatsink mounting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR | 3.3 V, 300 mA, 65 µA IQ, no reverse battery protection, SOT-23-5 package | Limited to non-automotive or low-current auxiliary rails; lacks AEC-Q100 qualification | Choose only for cost-sensitive consumer or industrial prototypes where reverse polarity risk is absent. |
| TPS7B8733QKVURQ1 | 3.3 V, 500 mA, 30 µA IQ, reverse battery protection, thermal foldback, VSON-8 package | Same functional scope but different footprint; requires PCB redesign due to VSON-8 vs SOIC-8 NB | Select when lower quiescent current is prioritized and board space allows VSON-8 layout adaptation. |
Compared with TLV73333PDBVR and TPS7B8733QKVURQ1, the NCV8768CD33ABR2G uniquely combines SOIC-8 NB thermal performance, integrated output discharge, and full AEC-Q100 Grade 1 qualification-making it optimal for production automotive ECUs where reliability, thermal margin, and system-level safety are non-negotiable.
Availability
NCV8768CD33ABR2G is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS domain controllers, and electric power steering systems requiring stable component supply across extended automotive lifecycles.
Supply support for NCV8768CD33ABR2G 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 silicon solutions for automotive, industrial, cloud, medical, and IoT applications, with deep expertise in power management and automotive-grade reliability.
The NCV8768CD33ABR2G belongs to onsemi's automotive LDO portfolio, engineered specifically for demanding under-hood and chassis-mounted electronic control units requiring robustness against voltage transients, thermal stress, and reverse battery faults.
FAQ
What is the maximum input voltage rating for the NCV8768CD33ABR2G?
The NCV8768CD33ABR2G supports a maximum input voltage of 40 V DC, enabling operation across the full automotive battery range including load dump transients up to ISO 7637-2 Pulse 5a. This rating is validated per AEC-Q100 stress testing and does not require external clamping for standard 12 V or 24 V vehicle architectures.
Does the NCV8768CD33ABR2G require an external output capacitor for stability?
Yes, the NCV8768CD33ABR2G requires a minimum 1 µF ceramic output capacitor placed close to the OUT and GND pins for loop stability. The datasheet specifies X5R or X7R dielectric types with ≤100 mΩ ESR; larger values improve transient response but are not mandatory for basic regulation.
How does the DIS pin function in the NCV8768CD33ABR2G?
The DIS pin on the NCV8768CD33ABR2G activates an internal 120 Ω discharge FET when the EN pin is driven low, discharging the output capacitor to <0.5 V within 10 ms. This prevents back-powering of upstream logic and ensures deterministic power-down sequencing in multi-rail automotive systems.
Is the NCV8768CD33ABR2G compatible with lead-free reflow soldering processes?
Yes, the NCV8768CD33ABR2G uses a lead-free matte tin finish and is rated for standard Pb-free reflow profiles per J-STD-020, including peak temperatures up to 260°C for 30 seconds. The SOIC-8 NB package is qualified for both wave and reflow assembly methods used in automotive manufacturing.
What failure modes are protected against by the NCV8768CD33ABR2G?
The NCV8768CD33ABR2G provides protection against reverse battery connection (−40 V), output short-circuit, thermal runaway (with hysteresis), input undervoltage (UVLO at 2.7 V), and overcurrent (foldback-limited). These protections are fully integrated and require no external components to activate.
NCV8768CD33ABR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 35 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (100Hz)
- Control Features:
- Enable, Reset, Watchdog
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
NCV8768CD33ABR2G FAQ
1.How can I place an order for NCV8768CD33ABR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8768CD33ABR2G 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 NCV8768CD33ABR2G reliable?
The price and inventory of NCV8768CD33ABR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8768CD33ABR2G is usually 5 days.
3.What payment methods are accepted for NCV8768CD33ABR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8768CD33ABR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8768CD33ABR2G?
NCV8768CD33ABR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8768CD33ABR2G 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 NCV8768CD33ABR2G?
For technical support, including NCV8768CD33ABR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8768CD33ABR2G requirements.
6.How does Aetrix verify that NCV8768CD33ABR2G is sourced from the original manufacturer or authorized distributors?
All NCV8768CD33ABR2G 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 NCV8768CD33ABR2G meets industry standards.
7.What is the process for return or replacement of NCV8768CD33ABR2G?
All NCV8768CD33ABR2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8768CD33ABR2G, 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 NCV8768CD33ABR2G part is unused and in its original packaging.
Return procedure for NCV8768CD33ABR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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