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onsemi NCV4290DS50R4G
- Part No.:
- NCV4290DS50R4G
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
NCV4290DS50R4G.pdf
- Description:
- IC REG LINEAR 5V 450MA D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,935
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Product details
Overview
NCV4290DS50R4G from onsemi is an AEC-Q100 qualified automotive-grade low-dropout linear voltage regulator delivering a stable 5.0 V ±2% output at up to 450 mA, featuring active open-collector Power Good (PG) signaling, programmable PG delay via external capacitor, and integrated overcurrent/overtemperature protection. It operates across −40°C to +150°C junction temperature and supports input voltages from 5.5 V to 42 V - designed for body electronics power rails requiring robust fault tolerance.
For engineers reviewing the NCV4290DS50R4G datasheet, pinout, applications, or equivalent options, this page provides verified technical context, validated pin functions, real-world thermal and stability constraints, and confirmed automotive-grade alternatives aligned with ISO 16750 transient immunity and AEC-Q100 stress requirements.
Technical Context
The NCV4290DS50R4G uses a PNP series pass transistor controlled by a bandgap-referenced error amplifier, enabling ultra-low dropout (250–500 mV at 300 mA) and high temperature stability (±0.5 mV/K drift). Its PG circuit implements hysteresis with rising-edge threshold of 4.65 V and falling-edge threshold of 3.65 V, and supports delay timing via external capacitor on Pin 4 (D), with typical charge current of 6.0 µA.
Thermal protection activates at 150°C (shutdown temperature), and the device sustains ±45 V peak transient and −42 V reverse battery conditions. Output stability is guaranteed with ≥22 µF output capacitance and ESR ≤4.0 Ω - compatible with ceramic, tantalum, or aluminum electrolytic capacitors per application environment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% - tightly regulated rail for microcontroller I/O and sensor interfaces in automotive modules. |
| Max Output Current | 450 mA - sufficient for powering multiple ECUs or peripheral ICs without external boost stages. |
| Dropout Voltage | 250–500 mV at 300 mA - enables operation down to VI = 5.5 V while maintaining regulation during cold-crank events. |
| Power Good Threshold | Rising: 4.65 V, Falling: 3.65 V - ensures reliable MCU reset sequencing with built-in hysteresis. |
| PG Delay Timing | 10–22 ms with 47 nF capacitor - configurable startup monitoring window to prevent premature system wake-up. |
| Input Voltage Range | 5.5 V to 42 V operating; −42 V to +45 V survival - meets ISO 16750-2 pulse 5a/b and reverse-battery test requirements. |
| Junction Temp Range | −40°C to +150°C - qualified for under-hood and transmission control unit (TCU) mounting locations. |
Pinout & Package
D2PAK-5 surface-mount package (Case 936A), thermally enhanced with exposed tab connected internally to Pin 3 (GND). Designed for high-power dissipation in compact automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Battery Input Supply | Primary VIN connection; requires 1000 µF bulk + 100 nF ceramic bypass to ground for transient suppression and stability. |
| 2 (PG) | Open-Collector Power Good Output | Active-low signal pulled up externally (typically 5.0 kΩ to VQ); asserts valid only when VQ > 1.0 V and after programmable delay. |
| 3 / Tab (GND) | Ground Reference & Thermal Path | Common return for all internal circuits; tab is electrically tied to Pin 3 and serves as primary heat sink interface. |
| 4 (D) | Power Good Timing Capacitor Node | Connects to external timing capacitor (e.g., 47 nF) to GND; sets PG assertion delay via internal 6.0 µA charge current. |
| 5 (Q) | Regulated 5.0 V Output | Delivers up to 450 mA; requires ≥22 µF output capacitor with ESR ≤4.0 Ω for guaranteed loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use across −40°C to +125°C ambient (150°C junction), including HTOL, TC, and ESD testing per AEC standards. |
| Programmable Power Good delay | Delay time set by external capacitor (e.g., 16 ms typical with 47 nF); eliminates need for external timers or FPGA logic. |
| Ultra-low quiescent current | 170–230 µA at light load (1 mA), dropping to <15 µA at 400 mA - critical for always-on vehicle networks (e.g., CAN/LIN gateways). |
| Robust fault protection | Integrated short-circuit, thermal shutdown (150°C), +45 V transient, and −42 V reverse-battery immunity - reduces need for external protection components. |
| Wide ESR stability range | Stable with output capacitors having ESR from native ceramic (<10 mΩ) up to 4.0 Ω - simplifies BOM and supports cost-optimized capacitor selection. |
Applications
| Body Control Module (BCM) | Door Module Electronics |
|---|---|
Use Scenario: Centralized power management for door lock actuators, window lift motors, mirror controls, and interior lighting drivers. IC Role / Device Role / Timing Role: Primary 5 V supply regulator with PG signaling to coordinate MCU boot and peripheral enable sequencing. Use Value: Ensures deterministic power-up timing and prevents MCU latch-up during battery transients common in door harnesses. |
Use Scenario: Powering LIN transceivers, position sensors, and small DC motor drivers inside vehicle doors. IC Role / Device Role / Timing Role: Local LDO providing clean 5 V rail with fault reporting via PG pin to LIN master node. Use Value: Enables rapid detection of undervoltage or overtemperature faults before actuator commands are issued. |
| Seat Control Unit | Roof Module (Sunroof/Blind Control) |
Use Scenario: Regulating power for seat position memory ICs, heater elements, and multi-axis motor drivers. IC Role / Device Role / Timing Role: High-current LDO with thermal foldback protecting against jammed motor conditions. Use Value: Maintains safe operation during extended stall events while signaling fault status via PG line to body domain controller. |
Use Scenario: Supplying 5 V to sunroof position sensors, rain sensor interfaces, and anti-pinch motor controllers. IC Role / Device Role / Timing Role: Fault-tolerant regulator with programmable PG delay ensuring full rail stabilization before enabling motion control logic. Use Value: Prevents false sunroof movement commands caused by slow-rising 5 V rail during ignition-on transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout automotive regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8664DS50R2G | Lower max current (250 mA), higher dropout (600 mV typ), same D2PAK-5 package and PG functionality. | Suitable for lower-power nodes like mirror or lighting modules where 450 mA headroom is unnecessary. | Select when thermal budget is constrained and load current remains below 250 mA - offers reduced quiescent current (80 µA). |
| TLE42744GV50 | Higher quiescent current (3 mA), no programmable PG delay, but includes watchdog and reset functions. | Preferred for safety-critical subsystems requiring independent reset supervision beyond basic PG signaling. | Choose when system-level functional safety (ASIL-B) compliance demands integrated watchdog/reset, not just power-good indication. |
Compared with NCV4290DS50R4G, the NCV8664DS50R2G trades output current and dropout for lower IQ and cost in less demanding loads, while the TLE42744GV50 adds supervisory features at the expense of efficiency and design simplicity - making NCV4290DS50R4G optimal for cost-sensitive, thermally constrained, yet high-current automotive body nodes.
Availability
NCV4290DS50R4G is available at Aetrix Electronics and suitable for automotive body electronics, door module designs, and seat control units requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for NCV4290DS50R4G 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, and automotive solutions - with leadership in AEC-Q100-qualified components for harsh-environment applications.
The NCV4290DS50R4G belongs to onsemi's SMART REGULATOR® family, engineered specifically for automotive body electronics where reliability under voltage transients, thermal extremes, and long service life are mandatory design requirements.
FAQ
What is the maximum input voltage the NCV4290DS50R4G can withstand during transients?
The NCV4290DS50R4G is rated for +45 V peak transient voltage and −42 V reverse battery conditions per ISO 16750-2, making it suitable for direct battery connection in automotive systems without external TVS diodes. These ratings are absolute maximum survival limits - sustained operation must remain within the 5.5 V to 42 V operating range specified in the datasheet. The NCV4290DS50R4G integrates internal clamp structures to absorb these transients without latch-up or degradation.
How does the Power Good (PG) output behave during brown-out conditions?
The NCV4290DS50R4G PG output goes low when VQ falls below 3.65 V (falling threshold) and remains low until VQ rises above 4.65 V (rising threshold), providing 1.0 V hysteresis to prevent chatter during marginal voltage conditions. Critically, PG remains invalid if VQ drops below 1.0 V - ensuring the signal never falsely asserts during deep undervoltage. This behavior is intrinsic to the NCV4290DS50R4G's internal comparator architecture and requires no external components.
Can the NCV4290DS50R4G be used with ceramic output capacitors?
Yes - the NCV4290DS50R4G is explicitly characterized for stability with ceramic output capacitors, including Murata GRM32ER71C226ME18 (22 µF, X7R, 1210). Stability is guaranteed for CQ ≥ 22 µF and ESR ≤ 4.0 Ω, covering the native ESR range of most automotive-grade ceramics. Unlike older LDOs, the NCV4290DS50R4G does not require minimum ESR, eliminating the need for series resistors or hybrid capacitor solutions.
What thermal performance can be expected from the NCV4290DS50R4G in a standard D2PAK layout?
On a 1.2 in² (788 mm²) copper spreader board, the NCV4290DS50R4G achieves RJA = 50°C/W and RJT = 4.1°C/W. At 450 mA output with 13.5 V input, power dissipation is ~3.8 W - resulting in ~190°C junction rise above ambient. Derating is required above 85°C ambient; for full-load operation at 125°C ambient, a heatsink or forced airflow is necessary. Thermal models for SPICE simulation are provided in the datasheet (Table 2).
Is the NCV4290DS50R4G pin-compatible with other onsemi automotive LDOs in D2PAK-5?
No - the NCV4290DS50R4G has a unique pinout (I-PG-GND-D-Q) optimized for PG delay timing and thermal performance. It is not pin-compatible with NCV8664 (I-GND-PG-Q-EN) or NCV8775 (I-GND-Q-PG-EN). Layout reuse requires verification of signal routing, thermal pad connectivity, and capacitor placement - especially the dedicated D pin for timing capacitor grounding. Always consult the specific package drawing (Case 936A) before footprint reuse.
NCV4290DS50R4G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 300mA
- Current - Output:
- 450mA
- Current - Quiescent (Iq):
- 200 µA
- Current - Supply (Max):
- 35 mA
- PSRR:
- 60dB (100Hz)
- Control Features:
- Power Good
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-5
NCV4290DS50R4G FAQ
1.How can I place an order for NCV4290DS50R4G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV4290DS50R4G 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 NCV4290DS50R4G reliable?
The price and inventory of NCV4290DS50R4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV4290DS50R4G is usually 5 days.
3.What payment methods are accepted for NCV4290DS50R4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV4290DS50R4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV4290DS50R4G?
NCV4290DS50R4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV4290DS50R4G 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 NCV4290DS50R4G?
For technical support, including NCV4290DS50R4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV4290DS50R4G requirements.
6.How does Aetrix verify that NCV4290DS50R4G is sourced from the original manufacturer or authorized distributors?
All NCV4290DS50R4G 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 NCV4290DS50R4G meets industry standards.
7.What is the process for return or replacement of NCV4290DS50R4G?
All NCV4290DS50R4G units undergo pre-shipment inspection (PSI). If there is an issue with NCV4290DS50R4G, 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 NCV4290DS50R4G part is unused and in its original packaging.
Return procedure for NCV4290DS50R4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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