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onsemi NCP5662MN33R2G
- Part No.:
- NCP5662MN33R2G
- Manufacturer:
- onsemi
- Package:
- -
- Datasheet:
-
NCP5662MN33R2G.pdf
- Description:
- IC REG LINEAR 3.3V 2A 8DFN
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Inventory:1,069
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Product details
Overview
NCP5662MN33R2G from onsemi is a fixed-output, 3.3 V, 2.0 A ultra-fast transient response low-dropout linear regulator in a Pb-free DFN8 package. It features 1.0 V typical dropout at 2.0 A load, 26 µVrms output noise without bypass capacitor, and integrated Error Flag for output monitoring. Designed for post-regulation in high-current server and networking power rails.
For engineers reviewing the NCP5662MN33R2G datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed 3.3 V ±1% accuracy over −40°C to +85°C, thermal shutdown at 160°C, enable-controlled sequencing, and compatibility with 10–150 µF ceramic output capacitors.
Technical Context
The NCP5662MN33R2G implements a bipolar-based LDO architecture with a 0.9 V internal reference and precision error amplifier. Its ultra-fast transient response (settling within 1–3 µs) stems from high-gain feedback control and optimized internal compensation, enabling stable operation with minimal external capacitance.
It integrates dedicated circuitry for Error Flag generation-asserting logic-low when output falls below 91–97% of nominal 3.3 V-with 50 µs blanking time to suppress false triggers during load transients. The enable input accepts TTL-compatible thresholds (VEN(H) ≥ 1.3 V, VEN(L) ≤ 0.3 V) and draws only 0.5 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±1% at 25°C; ±1.5% over −40°C to +85°C - ensures tight regulation for sensitive digital loads like FPGAs and ASICs. |
| Max Output Current | 2.0 A continuous - supports high-power SoC core or I/O rail requirements without external current boosting. |
| Dropout Voltage | 1.0 V typical at 2.0 A - enables operation from 4.3 V input while maintaining 3.3 V output, critical for efficient post-regulation. |
| Ground Current | 1.3 mA typical at 2.0 A - low quiescent current independent of load improves system efficiency at full load. |
| Noise (RMS) | 26 µVrms (10 Hz–100 kHz) - eliminates need for noise-reduction bypass capacitor, simplifying BOM and layout. |
| PSRR | 65 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters, protecting noise-sensitive analog circuits. |
| Error Flag Threshold | 91–97% of 3.3 V (3.00–3.20 V) - provides precise undervoltage detection for system-level fault management and sequencing. |
Pinout & Package
The NCP5662MN33R2G is housed in a thermally enhanced, Pb-free DFN8 (8-lead dual flat no-lead) package (Case 488AF), with exposed EPAD connected to GND for optimal thermal dissipation (RJA = 78°C/W, RJL = 14°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | EF (Error Flag) | Open-drain output asserting logic-low when VOUT < 3.20 V; requires external 100 kΩ pull-up to Vin for active-high signaling. |
| 2 | GND | Power ground reference and primary thermal path via EPAD; must be solidly connected to PCB ground plane. |
| 3 | N/C | No connection - true NC; PCB trace allowed but no electrical function or thermal benefit. |
| 4 | EN (Enable) | TTL-compatible input; device enabled when ≥1.3 V, disabled when ≤0.3 V; internal 0.5 µA leakage enables direct MCU GPIO control. |
| 5, 6 | Vin | Input power supply pins - must be shorted externally to handle full 2.0 A current; low-inductance routing essential for stability. |
| 7, 8 | Vout | Regulated 3.3 V output - connect directly to load with low-ESR ceramic capacitor (≥10 µF) placed adjacent to pins 7/8. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast transient response | 1–3 µs settling time enables stable 3.3 V rail under sudden 2.0 A → 10 mA load steps - critical for burst-mode processors. |
| Integrated Error Flag | Dedicated EF pin with 50 µs blanking and 91–97% VOUT threshold provides deterministic fault signaling without external comparators. |
| Low-noise operation | 26 µVrms noise without bypass capacitor reduces component count and board area - ideal for space-constrained networking modules. |
| Thermal robustness | 160°C thermal shutdown plus 78°C/W DFN8 thermal resistance allows sustained 2.0 A operation with minimal heatsinking in 70°C ambient. |
| Enable-controlled sequencing | Logic-level EN pin with 0.5 µA input current enables precise power-up/down coordination with FPGA or microcontroller GPIOs. |
Applications
| Server CPU Core Rail | ASIC I/O Power Supply |
|---|---|
Use Scenario: Providing clean, sequenced 3.3 V power to high-speed SerDes I/O banks on enterprise ASICs. IC Role / Device Role / Timing Role: Post-regulator delivering low-noise, fast-transient 3.3 V from intermediate 5 V or 12 V bus. Use Value: 26 µVrms noise and 1–3 µs transient response prevent bit errors in multi-gigabit interfaces without added filtering. | Use Scenario: Powering FPGA configuration and configuration I/O banks requiring precise 3.3 V with fault reporting. IC Role / Device Role / Timing Role: Primary 3.3 V LDO with integrated Error Flag for real-time rail health monitoring. Use Value: EF pin asserts low at 3.00–3.20 V, enabling immediate system reset before logic corruption occurs. |
| Networking Switch PHY Interface | Gaming Console Memory Subsystem |
Use Scenario: Regulating 3.3 V for Ethernet PHY transceivers subject to rapid packet-driven load changes. IC Role / Device Role / Timing Role: High-current LDO with ultra-fast transient response to maintain signal integrity during traffic bursts. Use Value: 1.0 V dropout at 2.0 A allows use of lower-input-voltage intermediate rails, improving overall system efficiency. | Use Scenario: Supplying DDR memory termination voltage (VTT) or auxiliary 3.3 V rails in compact gaming hardware. IC Role / Device Role / Timing Role: Space-optimized DFN8 LDO delivering 2.0 A with minimal footprint and no bypass cap. Use Value: Pb-free DFN8 package with EPAD-to-GND thermal path sustains 2.0 A in thermally constrained consumer enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A4700RGWR | 2.0 A, 3.3 V fixed, 20 µVrms noise, but requires 10 µF bypass capacitor; higher 1.15 V dropout at 2 A. | Lower noise but larger solution size due to mandatory bypass cap; less suitable for ultra-compact layouts. | Choose TPS7A4700RGWR only if sub-20 µVrms noise is mandatory and board space permits extra capacitor. |
| MCP1826T-3302E/OT | 2.0 A, 3.3 V fixed, 40 µVrms noise, 1.2 V dropout at 2 A, no Error Flag, SOT-223 package. | Lacks EF pin and has higher noise/dropout; limited thermal performance (RJA ≈ 120°C/W) restricts continuous 2 A use. | Select MCP1826T-3302E/OT only for cost-sensitive, non-fault-critical applications where EF is unnecessary. |
Compared with TPS7A4700RGWR and MCP1826T-3302E/OT, the NCP5662MN33R2G uniquely combines 26 µVrms noise without bypass capacitor, integrated Error Flag, and DFN8 thermal performance - making it optimal for space-constrained, fault-aware 3.3 V systems demanding both precision and reliability.
Availability
NCP5662MN33R2G is available at Aetrix Electronics and suitable for server power delivery, ASIC I/O regulation, and networking equipment requiring stable component supply with automotive-grade traceability and long-term lifecycle support.
Supply support for NCP5662MN33R2G 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, sensor, and logic solutions for automotive, industrial, cloud, and IoT applications.
The NCP5662 series belongs to onsemi's high-current LDO portfolio, engineered specifically for post-regulation in high-performance computing and communications infrastructure where ultra-fast transient response and rail health monitoring are mission-critical.
FAQ
What is the maximum input voltage rating for the NCP5662MN33R2G?
The NCP5662MN33R2G has an absolute maximum input voltage of 18 V. However, its recommended operating input range is (VOUT + VDO) to 9 V - meaning for 3.3 V output, minimum valid input is ~4.3 V (based on 1.0 V typical dropout), and maximum safe continuous input is 9 V per datasheet specifications.
Does the NCP5662MN33R2G require an external bypass capacitor to achieve its specified 26 µVrms noise performance?
No, the NCP5662MN33R2G achieves 26 µVrms output noise without any external bypass capacitor. This is explicitly confirmed in the datasheet's Electrical Characteristics table and Application Information section, eliminating the need for additional components and reducing PCB area and cost.
How does the Error Flag (EF) pin on the NCP5662MN33R2G behave during startup and load transients?
The NCP5662MN33R2G EF pin remains high during normal startup and is blanked for 50 µs during load transients to prevent false triggering. It asserts low only when VOUT drops below 91–97% of 3.3 V (3.00–3.20 V) for longer than the blanking window - ensuring reliable fault detection without nuisance trips during dynamic operation.
Can the NCP5662MN33R2G be used in automotive applications?
The NCP5662MN33R2G is not AEC-Q100 qualified. For automotive use, onsemi offers the pin-compatible NCV5662MN33R2G (NCV prefix), which is AEC-Q100 qualified, PPAP capable, and manufactured under automotive-specific process controls - the NCP5662MN33R2G is intended for industrial and commercial applications only.
What thermal considerations apply when operating the NCP5662MN33R2G at 2.0 A continuous current?
At 2.0 A with 4.3 V input and 3.3 V output, power dissipation is ~2.0 W. With RJA = 78°C/W (DFN8, 1 oz copper), junction temperature rise is ~156°C above ambient - exceeding the 150°C max. Therefore, adequate copper pour (≥1 in²), thermal vias to inner ground planes, and airflow are required to maintain TJ ≤ 150°C at full load.
NCP5662MN33R2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
NCP5662MN33R2G FAQ
1.How can I place an order for NCP5662MN33R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP5662MN33R2G 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 NCP5662MN33R2G reliable?
The price and inventory of NCP5662MN33R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP5662MN33R2G is usually 5 days.
3.What payment methods are accepted for NCP5662MN33R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP5662MN33R2G transactions.
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4.How is shipping managed for NCP5662MN33R2G?
NCP5662MN33R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP5662MN33R2G 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 NCP5662MN33R2G?
For technical support, including NCP5662MN33R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP5662MN33R2G requirements.
6.How does Aetrix verify that NCP5662MN33R2G is sourced from the original manufacturer or authorized distributors?
All NCP5662MN33R2G 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 NCP5662MN33R2G meets industry standards.
7.What is the process for return or replacement of NCP5662MN33R2G?
All NCP5662MN33R2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP5662MN33R2G, 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 NCP5662MN33R2G part is unused and in its original packaging.
Return procedure for NCP5662MN33R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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