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onsemi NCV5661MN30T2G
- Part No.:
- NCV5661MN30T2G
- Manufacturer:
- onsemi
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
NCV5661MN30T2G.pdf
- Description:
- IC REG LINEAR 3V 1A 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
NCV5661MN30T2G from onsemi is an automotive-grade, fixed-output 3.0 V, 1.0 A ultra-low-dropout linear regulator in a thermally robust DFN6 3×3.3 mm package. It delivers ultra-fast load transient response (1–3 µs settling), low ground current (≤3.0 mA at 1.0 A), and 26 µVrms output noise without bypass capacitor - ideal for post-regulation in ASIC power supplies and networking equipment.
For engineers reviewing the NCV5661MN30T2G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage ≤1.3 V at 1.0 A, AEC-Q100 qualification, Error Flag functionality, thermal shutdown at 160°C, and compatibility with low-ESR ceramic output capacitors ≥10 µF.
Technical Context
The NCV5661MN30T2G integrates a 0.9 V internal reference and precision error amplifier to regulate fixed 3.0 V output with ±1% accuracy at 25°C. Its architecture supports fast transient recovery via low-output-impedance pass element and independent ground current design - maintaining 1.3–3.0 mA quiescent current across full 10 mA–1.0 A load range.
It features active Enable control (logic-high threshold ≥1.3 V), open-drain Error Flag (active-low at ≤88% of nominal VOUT, blanked for 50 µs), thermal shutdown (160°C), and internal current limiting (1.5 A peak). The device operates from 2.0 V to 9.0 V input and is qualified per AEC-Q100 Grade 1 (−40°C to +125°C TJ).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±1% at 25°C; ±1.5% over −20°C to +125°C - ensures stable core logic supply under thermal stress. |
| Max Output Current | 1.0 A continuous - sufficient for high-current FPGA I/O banks or multi-core SoC domains. |
| Dropout Voltage | 1.0 V typical, 1.3 V max at 1.0 A - enables operation with only 4.3 V input, critical for 5 V rail post-regulation. |
| Ground Current | ≤3.0 mA at 1.0 A load - minimizes system standby power loss in always-on automotive modules. |
| Noise (10 Hz–100 kHz) | 26 µVrms - eliminates need for external bypass capacitor, reducing BOM count and PCB area. |
| PSRR | ≥65 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters in mixed-signal systems. |
| Error Flag Threshold | 88% of VOUT (≤2.64 V) - provides early undervoltage detection before downstream logic fails. |
Pinout & Package
NCV5661MN30T2G uses a Pb-free, thermally enhanced DFN6 (3.0 × 3.3 mm, 0.95 mm pitch) package with exposed thermal pad (Pin 6). The package supports 18°C/W junction-to-lead thermal resistance with 1 in² copper area, enabling 1.0 A operation without heatsink in ambient ≤85°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable Input | Active-high digital control: ≥1.3 V enables regulation; ≤0.3 V disables output and reduces ground current to 300 µA. |
| 2 (VIN) | Input Supply | Accepts 2.0–9.0 V; requires 150 µF low-ESR OSCON input capacitor if source > few inches away. |
| 3 (GND) | Power Ground | Common return for VIN, VOUT, and thermal pad; must be connected to large copper pour for thermal performance. |
| 4 (VOUT) | Regulated Output | Delivers fixed 3.0 V; stable with ≥10 µF ceramic output capacitor (ESR < 300 mΩ). |
| 5 (EF) | Error Flag Output | Open-drain output; requires external 100 kΩ pull-up to VIN; asserts low when VOUT drops ≤2.64 V. |
| 6 (EPAD) | Thermal Pad | Internally connected to GND; must be soldered to ≥1 in² PCB copper for thermal conduction and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast transient response | 1–3 µs settling time - maintains regulation during sudden 10 mA ↔ 1.0 A load steps in CPU burst modes. |
| Low-noise operation | 26 µVrms without bypass cap - simplifies layout and avoids capacitor aging/reliability concerns in automotive life cycles. |
| AEC-Q100 qualified | Grade 1 (−40°C to +125°C TJ) - certified for engine control units, ADAS domain controllers, and infotainment power rails. |
| Integrated safety functions | Thermal shutdown (160°C), current limit (1.5 A), and Error Flag - enable fail-safe behavior without external monitoring circuitry. |
| Load-independent ground current | ≤3.0 mA up to 1.0 A - enables accurate battery-life estimation in always-on telematics modules. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Powers 3.3 V microcontroller core and CAN transceiver in under-hood ECU exposed to −40°C to +125°C ambient. IC Role / Device Role / Timing Role: Primary post-regulator converting 5 V DC-DC output to clean, stable 3.0 V supply with fault signaling. Use Value: AEC-Q100 qualification and 160°C thermal shutdown prevent field failures; Error Flag alerts MCU to initiate safe shutdown before brownout. | Use Scenario: Supplies isolated 3.0 V logic for digital input conditioning circuits in DIN-rail mounted PLCs. IC Role / Device Role / Timing Role: Low-noise, high-current LDO ensuring glitch-free sampling of 24 V industrial sensor inputs. Use Value: 26 µVrms noise avoids ADC quantization errors; 1.0 A capacity supports multiple parallel input channels simultaneously. |
| Networking Switch ASIC Core Rail | Gaming Console SoC I/O Domain |
Use Scenario: Provides tightly regulated 3.0 V to high-speed SerDes PHY blocks in 10 GbE switch ASICs. IC Role / Device Role / Timing Role: Final-stage LDO delivering ultra-low-noise, fast-transient power to sensitive analog front-ends. Use Value: 1–3 µs transient response prevents bit errors during link training bursts; PSRR >65 dB rejects DC-DC ripple at 1 MHz switching frequency. | Use Scenario: Powers GPU memory interface logic in gaming consoles requiring rapid power-state transitions. IC Role / Device Role / Timing Role: Enable-controlled LDO enabling dynamic power gating of I/O subsystems during game loading/idle states. Use Value: ≤300 µA disabled-state current extends battery life in portable gaming devices; fast turn-on supports sub-100 ms wake-from-sleep. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8170DS330T2G | 3.3 V fixed output, 500 mA max, DFN6 package, no Error Flag | Lacks fault reporting; lower current rating limits use to low-power MCUs or sensors | Select when 3.3 V output and cost sensitivity outweigh need for 1.0 A capacity or error monitoring. |
| TLD5098EL | 3.0 V fixed, 1.2 A, integrated watchdog timer, HTSSOP-16 package | Includes system-level safety features (watchdog, windowed reset) but larger footprint and higher BOM cost | Prefer for ASIL-B automotive applications requiring functional safety beyond basic LDO protection. |
Compared with NCV5661MN30T2G, NCV8170DS330T2G offers lower cost and smaller solution size but sacrifices current capability and fault visibility; TLD5098EL adds functional safety overhead unsuitable for cost-sensitive non-ASIL designs where NCV5661MN30T2G's AEC-Q100 compliance and Error Flag provide optimal balance.
Availability
NCV5661MN30T2G is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC I/O modules, and networking switch ASIC power supplies requiring stable component supply, AEC-Q100 traceability, and long-term lifecycle support.
Supply support for NCV5661MN30T2G 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 silicon solutions for automotive, industrial, cloud, and IoT applications.
The NCV5661 series belongs to onsemi's automotive-qualified LDO portfolio, designed specifically for high-current, low-noise post-regulation in harsh-environment electronic control units and ADAS subsystems.
FAQ
What is the maximum input voltage rating for the NCV5661MN30T2G?
The NCV5661MN30T2G has an absolute maximum input voltage (VIN) of 18 V, but its recommended operating range is 2.0 V to 9.0 V. Operation above 9.0 V increases power dissipation and thermal stress without functional benefit, as the device is optimized for post-regulation from standard 5 V or 3.3 V intermediate rails.
Does the NCV5661MN30T2G require an external bypass capacitor for low-noise operation?
No, the NCV5661MN30T2G achieves 26 µVrms output noise (10 Hz–100 kHz) without any external bypass capacitor. This is enabled by its internal low-noise architecture and 0.9 V reference design - reducing bill-of-materials cost and PCB space while improving reliability in automotive and industrial deployments.
How does the Error Flag function on the NCV5661MN30T2G behave during startup and fault conditions?
The NCV5661MN30T2G Error Flag (Pin 5) is an open-drain output that remains high-impedance until VOUT reaches regulation. Once active, it pulls low when VOUT drops below 88% of nominal (≤2.64 V) and includes a 50 µs blanking time to ignore startup transients. A 100 kΩ pull-up resistor to VIN is required for proper logic-level signaling.
What thermal performance can be expected from the NCV5661MN30T2G in a standard 1 oz copper PCB layout?
With 1 in² of 1 oz copper connected to the exposed thermal pad (Pin 6), the NCV5661MN30T2G achieves RθJL = 18°C/W. At 1.0 A load and 4.3 V input (1.3 V dropout), power dissipation is ~1.3 W - resulting in ~23°C junction-to-ambient rise above board temperature, enabling reliable operation up to +85°C ambient without forced air or heatsink.
Is the NCV5661MN30T2G pin-compatible with other members of the NCV5661 family?
Yes, all NCV5661 variants in the DFN6 package - including NCV5661MN12T2G (1.2 V), NCV5661MN15T2G (1.5 V), and NCV5661MN33T2G (3.3 V) - share identical pinout, package dimensions, and thermal pad layout. Only the output voltage and Error Flag threshold differ, allowing drop-in replacement across voltage options in existing PCB designs.
NCV5661MN30T2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 9V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.3V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 3 mA
- Current - Supply (Max):
- -
- PSRR:
- 70dB ~ 65dB (120Hz ~ 1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (3x3.3)
NCV5661MN30T2G FAQ
1.How can I place an order for NCV5661MN30T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV5661MN30T2G 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 NCV5661MN30T2G reliable?
The price and inventory of NCV5661MN30T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV5661MN30T2G is usually 5 days.
3.What payment methods are accepted for NCV5661MN30T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV5661MN30T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV5661MN30T2G?
NCV5661MN30T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV5661MN30T2G 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 NCV5661MN30T2G?
For technical support, including NCV5661MN30T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV5661MN30T2G requirements.
6.How does Aetrix verify that NCV5661MN30T2G is sourced from the original manufacturer or authorized distributors?
All NCV5661MN30T2G 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 NCV5661MN30T2G meets industry standards.
7.What is the process for return or replacement of NCV5661MN30T2G?
All NCV5661MN30T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV5661MN30T2G, 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 NCV5661MN30T2G part is unused and in its original packaging.
Return procedure for NCV5661MN30T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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