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onsemi NCV4279CD150R2G
- Part No.:
- NCV4279CD150R2G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
NCV4279CD150R2G.pdf
- Description:
- IC REG LINEAR 5V 150MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
NCV4279CD150R2G from onsemi is a 5.0 V ±2.0% AEC-Q100 Grade 1 qualified micropower LDO linear regulator in SO-8 package, delivering up to 150 mA output current with 0.25 V typical dropout at 100 mA and 125 µA quiescent current at 1 mA load. It integrates active-reset (RO), sense-input/sense-output (SI/SO) early-warning monitoring, and adjustable reset threshold via RADJ pin. Designed for automotive microprocessor power management under load dump and reverse-battery conditions.
For engineers reviewing the NCV4279CD150R2G datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, validated pin functions, real-world automotive use cases, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The NCV4279CD150R2G implements a PNP-based LDO architecture with precision trimmed bandgap reference and low-saturation drive control, enabling stable regulation down to 1.0 V output during reset assertion. Its independent reset generator operates with dual thresholds (VUD = 1.4–2.2 V, VLD = 0.3–0.6 V) and programmable delay via external capacitor CD, while SI/SO comparator provides early warning at VSI,High = 1.24–1.38 V and VSI,Low = 1.16–1.28 V.
Thermal shutdown activates at TJ = 150–200 °C, and fault protection includes −40 V reverse battery, +60 V peak transient, short-circuit, and thermal overload. Electrical parameters are guaranteed over −40 °C to +150 °C junction temperature range, with RJA = 167 °C/W for SO-8 package on 2 oz copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2.0% - ensures microprocessor core voltage compliance across automotive temperature and line/load variations. |
| Max Output Current | 150 mA - supports low-power MCU, CAN transceivers, and sensor interfaces without external pass devices. |
| Dropout Voltage | 0.25 V (typ) at 100 mA - enables operation with input as low as 5.25 V while maintaining regulation. |
| Quiescent Current | 125 µA at 1 mA load - extends battery life in always-on automotive modules (e.g., body control units). |
| Reset Threshold | 4.50–4.80 V - triggers RO low when VQ falls outside regulation window, with adjustable range down to ~3.5 V via RADJ. |
| Delay Timing | 17–28 ms (CD = 100 nF) - provides configurable power-up stabilization and brownout recovery timing. |
| Operating Temp | −40 °C to +150 °C junction - meets AEC-Q100 Grade 1 requirements for under-hood automotive applications. |
Pinout & Package
NCV4279CD150R2G is housed in an SO-8 (Case 751, Pb-free) package with 1.27 mm pitch, 4.8–5.0 mm width, and 3.8–4.0 mm length. Thermal resistance is RJA = 167 °C/W (2 oz copper, 100 mm² area).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| I | Input | Regulator input; connect directly to GND with ceramic capacitor for stability and EMI suppression. |
| SI | Sense Input | Comparator input for early-warning monitoring; threshold set externally via resistor divider to detect pre-reset voltage dip. |
| RADJ | Reset Threshold Adjust | Connects to voltage divider from Q to set custom reset threshold; tie to GND for default 4.65 V threshold. |
| D | Reset Delay | Charges external capacitor CD with 3.0–9.5 µA current to program power-up and recovery delay timing. |
| GND | Ground | Common return for regulator, reset, and sense circuits; multiple pins (5,6,7,8) ensure low-impedance path. |
| RO | Reset Output | Open-collector NPN output; pulls low during reset events and remains valid down to VQ = 1.0 V. |
| SO | Sense Output | Open-collector warning signal; goes low when VSI drops below 1.20 V, giving MCU time to save state before RO asserts. |
| Q | 5 V Output | Regulated output; requires ≥2.2 µF ceramic capacitor with ESR < 2.5 Ω for loop stability per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Reset Threshold | Settable from 4.65 V down to ~3.5 V using external resistor divider on RADJ, enabling system-specific brownout detection. |
| Early Warning Sense Path | SI/SO comparator provides programmable pre-reset alert with 1.20 V nominal trip point, allowing MCU to complete critical tasks before hard reset. |
| Automotive-Grade Protection | Withstands −40 V reverse battery, +60 V load dump transients, short-circuit, and thermal overload-qualified to AEC-Q100 Grade 1. |
| Micropower Operation | 125 µA quiescent current at 1 mA load enables >10-year battery life in always-on vehicle modules like keyless entry receivers. |
| Low-Dropout Performance | 0.25 V typical dropout at 100 mA allows operation from degraded 12 V systems (e.g., cold-crank at 6.5 V input) while sustaining 5 V output. |
Applications
| Body Control Module (BCM) | Instrument Cluster MCU Power |
|---|---|
|
Use Scenario: Powering 32-bit ARM Cortex-M microcontroller and LIN transceivers in door module with intermittent 12 V supply and load dump events. IC Role / Device Role / Timing Role: Primary 5 V LDO with integrated reset and early-warning signaling to coordinate safe shutdown during battery disconnect or voltage sag. Use Value: Prevents data corruption by triggering SO warning before RO reset, enabling EEPROM write completion and GPIO state preservation. |
Use Scenario: Supplying display driver IC and analog gauges in dashboard cluster where EMI immunity and thermal robustness are critical. IC Role / Device Role / Timing Role: Regulated 5 V source with AEC-Q100 qualification and 167 °C/W thermal resistance for sustained operation near HVAC ducts. Use Value: Eliminates need for external TVS and thermal shutdown circuitry-reduces BOM count by 3 components versus discrete protection solutions. |
| Telematics Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
|
Use Scenario: Powering GPS baseband processor and cellular modem in always-connected vehicle hotspot with wake-on-LIN capability. IC Role / Device Role / Timing Role: Micropower LDO enabling <150 µA sleep current while maintaining RO/SO functionality for rapid wake-and-reset sequencing. Use Value: Achieves 12.5-year theoretical coin-cell backup life in sleep mode-validated across −40 °C to +85 °C ambient range. |
Use Scenario: Regulating power for radar preprocessing ASIC and camera interface in front-end ADAS domain controller. IC Role / Device Role / Timing Role: Fault-tolerant 5 V supply with load dump immunity and programmable reset delay to synchronize multi-rail power sequencing. Use Value: Enables single-supply design for mixed-signal sensor hub-avoids separate reset supervisor IC and saves 22 mm² PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator with reset and sense monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8664CDT50RKG | Fixed 5.0 V output, no RADJ or SI/SO; 180 mA IOUT, 250 µA Iq; same SO-8 package. | Lacks early-warning capability and adjustable reset-suitable only for basic reset-only systems without MCU state preservation needs. | Select when cost sensitivity outweighs need for programmable reset and SO warning; verify thermal margin with RJA = 170 °C/W. |
| TLV70750PDQNR | 5.0 V fixed, 300 mA IOUT, 25 µA Iq, no reset or sense features; WSON-8 package (2.0 × 2.0 mm). | No integrated reset or monitoring-requires external supervisor IC (e.g., TPS3808) for reset, increasing BOM and layout complexity. | Choose for ultra-low Iq in non-automotive portable applications; not AEC-Q100 qualified and lacks load dump protection. |
Compared with NCV4279CD150R2G, NCV8664CDT50RKG offers higher output current but sacrifices SI/SO warning and reset adjustability, while TLV70750PDQNR reduces quiescent current dramatically but removes all automotive-grade protection and monitoring functions-making it unsuitable for direct replacement in safety-critical vehicle systems.
Availability
NCV4279CD150R2G is available at Aetrix Electronics and suitable for automotive body electronics, instrument clusters, and telematics modules requiring stable component supply with full lifecycle support and traceable sourcing.
Supply support for NCV4279CD150R2G 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 specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The NCV4279CD150R2G belongs to onsemi's automotive-qualified LDO regulator family, engineered specifically for microprocessor power management in harsh environments-including engine bay, chassis, and infotainment systems-where reliability under load dump, reverse battery, and wide temperature extremes is mandatory.
FAQ
What is the minimum input voltage required for NCV4279CD150R2G to maintain regulated 5.0 V output?
The NCV4279CD150R2G maintains regulation down to an input voltage of VQ + Vdr = 5.0 V + 0.5 V = 5.5 V maximum dropout, with typical dropout of 0.25 V at 100 mA. Thus, at 100 mA load, 5.25 V input sustains regulation. At lighter loads, dropout decreases further-enabling operation from degraded 12 V systems during cold-crank events.
Can NCV4279CD150R2G be used without connecting the RADJ pin?
Yes. If the reset threshold adjustment function is not needed, the RADJ pin must be connected directly to GND per datasheet guidance. This configures the internal reset comparator to its default threshold of 4.65 V (4.50–4.80 V range), ensuring proper Power-On Reset behavior without external components.
How does the SI/SO early-warning feature improve system reliability in NCV4279CD150R2G?
The SI/SO path in NCV4279CD150R2G provides a programmable voltage monitor that asserts SO low when VSI drops below 1.20 V-typically 10–50 ms before RO triggers reset. This gives the microprocessor time to flush buffers, save volatile data, and execute controlled shutdown, preventing corruption in EEPROM or RAM during brownout events.
Is NCV4279CD150R2G still recommended for new designs?
No. According to onsemi's datasheet (Rev. 6, December 2024), NCV4279CD150R2G is marked "DISCONTINUED" and "not recommended for new design." However, Aetrix Electronics maintains active inventory and supply chain support for legacy production and repair programs through lifecycle management services.
What capacitor values are required for stable operation of NCV4279CD150R2G?
NCV4279CD150R2G requires a minimum 2.2 µF ceramic output capacitor (CQ) with ESR < 2.5 Ω for stability, and a 470 nF input capacitor (CI) located close to the I pin. The datasheet validates stability with Murata GRM31MR71A225KA01 (2.2 µF) and GRM31CR71A106KA01 (10 µF), both X7R dielectric, 1206 case.
NCV4279CD150R2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-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):
- 45V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 100mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 250 µA
- Current - Supply (Max):
- 3 mA
- PSRR:
- -
- 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:
- 8-SOIC
NCV4279CD150R2G FAQ
1.How can I place an order for NCV4279CD150R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV4279CD150R2G 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 NCV4279CD150R2G reliable?
The price and inventory of NCV4279CD150R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV4279CD150R2G is usually 5 days.
3.What payment methods are accepted for NCV4279CD150R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV4279CD150R2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV4279CD150R2G?
NCV4279CD150R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV4279CD150R2G 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 NCV4279CD150R2G?
For technical support, including NCV4279CD150R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV4279CD150R2G requirements.
6.How does Aetrix verify that NCV4279CD150R2G is sourced from the original manufacturer or authorized distributors?
All NCV4279CD150R2G 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 NCV4279CD150R2G meets industry standards.
7.What is the process for return or replacement of NCV4279CD150R2G?
All NCV4279CD150R2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV4279CD150R2G, 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 NCV4279CD150R2G part is unused and in its original packaging.
Return procedure for NCV4279CD150R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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