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onsemi NCV663SQ28T1G
- Part No.:
- NCV663SQ28T1G
- Manufacturer:
- onsemi
- Package:
- SC-82A, SOT-343
- Datasheet:
-
NCV663SQ28T1G.pdf
- Description:
- IC REG LINEAR 2.8V 100MA SC82AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
NCV663SQ28T1G from onsemi is an automotive-grade, fixed-output 2.8 V low-dropout linear regulator (LDO) with 100 mA output capability, ultra-low 2.5 µA quiescent current, ±2.0% output voltage accuracy, and operation over −40 °C to +125 °C. It serves as a primary power supply for low-power microcontrollers and sensors in battery-backed infotainment modules.
For engineers reviewing the NCV663SQ28T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 100 mA (280 mV typ), thermal shutdown protection, SC-82AB package compatibility, AEC-Q100 qualification, and absence of enable functionality.
Technical Context
The NCV663SQ28T1G uses a PMOS pass transistor architecture enabling low dropout performance and stable regulation with ceramic output capacitors as low as 0.1 µF. Its internal circuitry includes voltage reference, error amplifier, current limit, and thermal shutdown-no external compensation required.
Unlike the NCV662 variant, the NCV663 family omits the enable pin and replaces it with a no-connect (N/C) terminal, simplifying control logic in always-on automotive subsystems. Output voltage is factory-trimmed to 2.8 V with 2.0% initial accuracy and 100 ppm/°C temperature coefficient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2.0% at 1 mA; maintains regulation down to 2.744 V at full 100 mA load |
| Dropout Voltage | 280 mV typical at 100 mA (measured at Vout −3.0%), enabling operation with Vin ≥ 3.08 V |
| Quiescent Current | 2.5 µA typical at zero load-critical for extended battery life in always-on vehicle modules |
| Operating Temperature | −40 °C to +125 °C ambient-validated for under-hood and infotainment zone deployment |
| Input Voltage Range | Up to 6.0 V maximum-supports 5 V rail and transient-tolerant 12 V system interfaces via external L-C filtering |
| Thermal Protection | Internal shutdown activates at ~160 °C junction temperature, auto-recovering upon cooldown |
| Output Capacitor | Stable with ≥0.1 µF ceramic capacitor-eliminates need for high-ESR tantalum or aluminum electrolytics |
Pinout & Package
NCV663SQ28T1G is housed in the SC-82AB (Case 419C) surface-mount package: 1.8–2.2 mm × 1.15–1.35 mm × 0.8–1.1 mm body, 4-terminal, Pb-free, micro-miniature footprint compatible with 0.65 mm pitch PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power ground reference; must be connected to low-impedance PCB plane for noise immunity and thermal conduction |
| 2 | Vin | Input supply pin; accepts up to 6.0 V DC; requires local 1.0 µF ceramic decoupling per layout guidelines |
| 3 | Vout | Regulated 2.8 V output; drives load directly; output capacitor ≥0.1 µF required for stability |
| 4 | N/C | No internal connection-must remain unconnected; not usable as enable or feedback node |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Validated for automotive applications including infotainment, telematics, and body control modules |
| Ultra-low IQ (2.5 µA) | Enables >10-year battery standby in always-on CAN nodes and wake-up receivers without compromising runtime |
| 280 mV dropout @ 100 mA | Permits use with aging 3.3 V rails or post-dropper supplies while maintaining 2.8 V output margin |
| ±2.0% output accuracy | Meets ADC reference and MCU core voltage tolerance requirements without external trimming |
| Thermal shutdown + current limit | Self-protecting during short-circuit or overload-no external foldback circuitry needed |
Applications
| Automotive Infotainment Power | Telematics Module Core Supply |
|---|---|
Use Scenario: Powering audio DSPs and display controllers in head units where input rail varies between 3.3 V and 5.5 V due to buck converter ripple and load transients. IC Role / Device Role / Timing Role: Primary 2.8 V LDO delivering clean, regulated voltage to sensitive analog and digital subsystems. Use Value: 280 mV dropout ensures regulation across full input range; 2.5 µA IQ extends backup battery life during ignition-off states. |
Use Scenario: Supplying 2.8 V to LTE modem baseband processors and GNSS receivers in connected car gateways. IC Role / Device Role / Timing Role: Low-noise, thermally robust voltage source for RF-sensitive mixed-signal ICs requiring stable bias under vibration and thermal cycling. Use Value: −40 °C to +125 °C rating supports under-dash mounting; 100 ppm/°C TC minimizes voltage drift across cabin temperature extremes. |
| Body Control Unit Sensors | ADAS Camera Interface Logic |
Use Scenario: Powering LIN transceivers and door module MCUs in battery-powered entry systems with intermittent wake events. IC Role / Device Role / Timing Role: Always-on LDO providing precise 2.8 V to microcontroller I/O and sensor interface circuits. Use Value: No enable pin simplifies design-eliminates risk of accidental disable during sleep/wake transitions; N/C pin avoids misconnection. |
Use Scenario: Regulating 2.8 V for image signal processor (ISP) I/O banks and MIPI CSI-2 serializer logic in rear-view cameras. IC Role / Device Role / Timing Role: Low-noise, fast-transient-response supply ensuring timing integrity of high-speed serial links. Use Value: 0.1 µF ceramic stability enables compact layout near ISP; 100 mA capacity supports burst-mode pixel data transfers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV663SQ27T1G | 2.7 V fixed output; otherwise identical electrical specs, package, and automotive qualification | Suitable where 2.7 V logic interface or legacy sensor compliance is required instead of 2.8 V | Select only if system-level voltage margin analysis confirms 2.7 V suffices for all downstream loads |
| NCV663SQ30T1G | 3.0 V fixed output; same SC-82AB package, thermal specs, and AEC-Q100 qualification | Used when powering 3.0 V I/O peripherals or replacing older 3.0 V regulators in existing designs | Choose when board-level voltage rail allocation mandates 3.0 V rather than 2.8 V for interoperability |
Compared with NCV663SQ28T1G, both alternatives share identical thermal performance, package, and automotive qualification-but differ solely in nominal output voltage; none offer enable functionality, and all require identical PCB layout and decoupling.
Availability
NCV663SQ28T1G is available at Aetrix Electronics and suitable for automotive infotainment, telematics modules, and body control units requiring stable component supply amid ongoing obsolescence management.
Supply support for NCV663SQ28T1G 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 NCV663 series belongs to onsemi's automotive-qualified LDO portfolio, designed specifically for low-power, high-reliability power management in harsh-temperature vehicle subsystems.
FAQ
Is NCV663SQ28T1G still in active production?
No-NCV663SQ28T1G is marked as discontinued per onsemi's November 2025 datasheet revision. Aetrix Electronics maintains limited legacy stock and supports last-time-buy programs with full traceability and documentation for automotive customers transitioning to alternate solutions.
Does NCV663SQ28T1G have an enable pin?
No-NCV663SQ28T1G does not include an enable function. Pin 4 is designated N/C (no internal connection), unlike the NCV662 series which uses Pin 4 as Enable. This makes NCV663SQ28T1G suitable for always-on applications without external control logic.
What is the minimum output capacitor required for NCV663SQ28T1G stability?
The minimum stable output capacitor for NCV663SQ28T1G is 0.1 µF ceramic. Larger values improve load transient response and noise rejection but are not required for basic regulation. TDK part numbers C2012X5R1C105K or C1608X5R1A105K are validated in the datasheet.
Can NCV663SQ28T1G replace NCV662SQ28T1G in an existing design?
No direct replacement-NCV662SQ28T1G includes an Enable pin (Pin 4), while NCV663SQ28T1G has N/C at Pin 4. Swapping requires PCB modification to disconnect or repurpose Pin 4, and firmware changes if enable control was used. Electrical specs otherwise match closely.
What is the maximum continuous output current for NCV663SQ28T1G?
NCV663SQ28T1G delivers up to 100 mA continuously under specified thermal conditions (TA ≤ +125 °C, adequate PCB copper area). At higher ambient temperatures or with poor thermal layout, derating applies-maximum power dissipation is internally limited to maintain safe junction temperature.
NCV663SQ28T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 1 µA
- Current - Supply (Max):
- 6 µA
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-82AB
NCV663SQ28T1G FAQ
1.How can I place an order for NCV663SQ28T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV663SQ28T1G 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 NCV663SQ28T1G reliable?
The price and inventory of NCV663SQ28T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV663SQ28T1G is usually 5 days.
3.What payment methods are accepted for NCV663SQ28T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV663SQ28T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV663SQ28T1G?
NCV663SQ28T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV663SQ28T1G 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 NCV663SQ28T1G?
For technical support, including NCV663SQ28T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV663SQ28T1G requirements.
6.How does Aetrix verify that NCV663SQ28T1G is sourced from the original manufacturer or authorized distributors?
All NCV663SQ28T1G 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 NCV663SQ28T1G meets industry standards.
7.What is the process for return or replacement of NCV663SQ28T1G?
All NCV663SQ28T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCV663SQ28T1G, 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 NCV663SQ28T1G part is unused and in its original packaging.
Return procedure for NCV663SQ28T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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