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onsemi NCP5662DS30R4G
- Part No.:
- NCP5662DS30R4G
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
NCP5662DS30R4G.pdf
- Description:
- IC REG LINEAR 3V 2A D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,159
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Product details
Overview
NCP5662DS30R4G from onsemi is a fixed-output, 3.0 V, 2.0 A low-dropout linear regulator in D2PAK package, featuring ultra-fast load transient response (≤3 µs settling), 26 µVrms output noise without bypass capacitor, and integrated enable control and error flag for system monitoring. It delivers stable power to high-current ASIC cores and server point-of-load rails where tight regulation and rapid dynamic response are critical.
For engineers reviewing the NCP5662DS30R4G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage ≤1.3 V at 2.0 A, ground current ≤3.0 mA under full load, thermal shutdown at 160°C, and compatibility with 10–150 µF output capacitors for stability across industrial temperature range (−40°C to +85°C).
Technical Context
The NCP5662DS30R4G implements a bipolar-based LDO architecture with a 0.9 V internal reference and precision error amplifier, enabling accurate 3.0 V output regulation over ±2% tolerance across −40°C to +85°C. Its ultra-low ground current (1.3–3.0 mA) remains independent of load, supporting efficient operation at light and full loads alike.
Transient response is optimized via internal compensation and low-ESR capacitor support (50–300 mΩ), achieving sub-microsecond recovery from 10 mA ↔ 2.0 A load steps. The error flag (EF) provides open-drain logic-low indication when output falls below 91–97% of nominal (2.73–2.91 V), with 50 µs blanking time to suppress false triggers during startup or transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% over −40°C to +85°C; enables direct replacement of legacy 3.3 V rails with tighter margin headroom. |
| Max Output Current | 2.0 A continuous; supports high-power FPGA I/O banks and ASIC core domains without external current boosting. |
| Dropout Voltage | 1.0 V typical / 1.3 V max at 2.0 A; allows operation from 4.3 V input while maintaining regulation-critical for post-regulation from 5 V or 4.5 V intermediate buses. |
| Ground Current | ≤3.0 mA at 2.0 A load; minimizes quiescent power loss and improves efficiency at full load vs. competing LDOs with load-dependent bias. |
| Noise (RMS) | 26 µVrms (10 Hz–100 kHz); eliminates need for external bypass capacitor-reducing BOM count and PCB area in space-constrained server modules. |
| PSRR | ≥65 dB at 1 kHz; suppresses switching noise from upstream DC/DC converters feeding the LDO input, preserving signal integrity in analog-sensitive subsystems. |
| Error Flag Threshold | 91–97% of VOUT (2.73–2.91 V); provides reliable undervoltage detection with built-in hysteresis and 50 µs blanking-enabling clean system-level fault reporting without external comparators. |
Pinout & Package
D2PAK-5 (Case 936A-02) thermally enhanced package with exposed tab tied to GND; rated RJA = 45°C/W (with 1 in² copper), RJC = 5.0°C/W-enabling 30 W+ power dissipation in properly heatsinked designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | EF (Error Flag) | Open-drain output; pulls low when VOUT < 91–97% of nominal; requires external 100 kΩ pull-up to Vin for active monitoring. |
| 2 | Vin | Main input supply (2–9 V); pins 5 & 6 must be paralleled externally for full 2.0 A capability per datasheet Figure 1. |
| 3, Tab | GND | Power ground and thermal path; exposed tab must be soldered to large copper pour for thermal performance. |
| 4 | Vout | Regulated 3.0 V output; stable with 10–150 µF output capacitor (50–300 mΩ ESR). |
| 5 | EN | Enable input; logic-high ≥1.3 V enables regulator, logic-low ≤0.3 V disables output and reduces ground current to ≤300 µA. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast transient response | Settling time ≤3 µs for 10 mA ↔ 2.0 A load steps-maintains voltage within ±30 mV window during CPU burst activity. |
| Low-noise operation | 26 µVrms output noise without bypass cap-eliminates 10 µF ceramic bypass, saving 1.6 mm² PCB area and reducing component count. |
| Load-independent ground current | 3.0 mA max at 2.0 A load-ensures predictable thermal rise and simplifies power budgeting across dynamic load profiles. |
| Integrated error flag | Factory-trimmed 91–97% VOUT threshold with 50 µs blanking-provides deterministic fault signaling without external resistor divider or timing components. |
| Thermal robustness | 160°C thermal shutdown with hysteresis-protects against sustained overload or inadequate heatsinking in enclosed server chassis. |
Applications
| ASIC Power Supply | Server Point-of-Load |
|---|---|
|
Use Scenario: Delivering clean, regulated 3.0 V to high-speed ASIC I/O banks with burst currents up to 2.0 A. IC Role / Device Role / Timing Role: Primary post-regulator converting 4.5–5.0 V intermediate bus to precise 3.0 V; handles µs-scale load transients from memory interface toggling. Use Value: Ultra-fast transient response prevents I/O voltage droop below 2.91 V (EF threshold), avoiding timing violations and data corruption during DDR4/DDR5 command bursts. |
Use Scenario: Providing stable 3.0 V to PCIe switch auxiliary rails in 1U rack servers with constrained airflow. IC Role / Device Role / Timing Role: High-current LDO placed adjacent to PCIe retimer ICs; supplies bias and reference voltages requiring low noise and zero ripple coupling. Use Value: 26 µVrms noise and ≥65 dB PSRR eliminate need for ferrite beads or LC filters-reducing board layer count and improving signal integrity on high-speed serial lanes. |
| Networking Equipment | Gaming/STB Modules |
|
Use Scenario: Powering 3.0 V PHY interfaces in 10G Ethernet line cards subject to hot-swap and cable-insertion transients. IC Role / Device Role / Timing Role: Fault-tolerant regulator with EN-controlled sequencing and EF-driven system watchdog reset assertion. Use Value: Error flag asserts within 50 µs of output collapse-triggering immediate firmware-initiated safe shutdown before PHY lock loss or packet corruption occurs. |
Use Scenario: Supplying 3.0 V to video decoder SoCs in set-top boxes where thermal envelope limits use of switching regulators. IC Role / Device Role / Timing Role: Low-noise, thermally efficient LDO replacing inefficient 3.3 V linear solutions; operates continuously at 1.5 A average load. Use Value: 1.3 V dropout at 2.0 A enables use of 4.3 V input from shared buck converter-reducing total system power loss by 180 mW vs. legacy 3.3 V LDOs at same load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A8300RGRT | 3.0 V fixed, 2.0 A, 0.8 V dropout (typ), 12 µVrms noise, but requires 2.2 µF bypass capacitor and has no error flag. | Lacks integrated EF; suitable where ultra-low noise is prioritized over fault reporting, and board space allows bypass cap. | Choose TPS7A8300RGRT only if noise <15 µVrms is mandatory and EF functionality is handled externally. |
| NCP5663DS30R4G | Pin-compatible successor with improved 0.75 V dropout (max), lower 1.5 µVrms noise, and extended −40°C to +125°C operation-but not yet widely stocked. | Same footprint and pinout; targets next-gen designs requiring higher ambient temp rating and lower dropout. | Select NCP5663DS30R4G for new designs needing automotive-grade temp range or >100 mV dropout reduction; verify availability before committing. |
Compared with TPS7A8300RGRT, NCP5662DS30R4G trades 14 µVrms higher noise for integrated error flag and bypass-cap-free operation-reducing design complexity in server and networking systems where fault visibility outweighs marginal noise gain. Against NCP5663DS30R4G, it offers proven supply chain maturity and full industrial temp support at slightly higher dropout and noise.
Availability
NCP5662DS30R4G is available at Aetrix Electronics and suitable for server power delivery, ASIC point-of-load regulation, and networking equipment requiring stable component supply with long lifecycle visibility and Pb-free compliance.
Supply support for NCP5662DS30R4G 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 sensor technologies for automotive, industrial, and cloud infrastructure markets.
The NCP5662DS30R4G belongs to onsemi's high-current LDO family designed specifically for demanding server, networking, and ASIC power applications-emphasizing ultra-fast transient response, low noise, and integrated system-monitoring features.
FAQ
What is the maximum input voltage rating for the NCP5662DS30R4G?
The NCP5662DS30R4G has an absolute maximum input voltage rating of 18 V. However, its recommended operating input range is 2 V to 9 V-specifically, minimum Vin = Vout + VDO (i.e., ≥4.3 V for 3.0 V output at 2.0 A). Exceeding 9 V risks exceeding safe power dissipation limits in the D2PAK package under full load.
Does the NCP5662DS30R4G require an external bypass capacitor for low-noise operation?
No, the NCP5662DS30R4G achieves 26 µVrms output noise without any external bypass capacitor. This is enabled by its internal bipolar process and optimized internal compensation-reducing BOM cost and PCB area versus LDOs requiring 1–10 µF ceramic bypass caps for comparable noise performance.
How does the error flag (EF) pin function on the NCP5662DS30R4G?
The EF pin on the NCP5662DS30R4G is an open-drain output that pulls low when the regulated 3.0 V output drops below 91–97% of nominal (2.73–2.91 V). It includes 50 µs blanking to ignore startup transients and requires an external 100 kΩ pull-up resistor to Vin. When active, EF signals a sustained undervoltage condition-not momentary load-induced dips.
What thermal performance can be expected from the NCP5662DS30R4G in a standard layout?
In a standard 1 in² (645 mm²), 1 oz copper PCB layout, the NCP5662DS30R4G exhibits RJA = 45°C/W. At 2.0 A load with 4.3 V input (1.3 V dropout), power dissipation is ~2.6 W-resulting in ~117°C junction rise above ambient. With 25°C ambient, TJ ≈ 142°C, safely below the 150°C max rating and thermal shutdown threshold of 160°C.
Is the NCP5662DS30R4G pin-compatible with other devices in the NCP5662 family?
Yes, all D2PAK-packaged NCP5662 variants-including NCP5662DS12R4G, NCP5662DS15R4G, and NCP5662DS33R4G-share identical pinout, package dimensions, and thermal pad layout. Only the output voltage and marking differ; no PCB redesign is needed when swapping between fixed-output versions of the NCP5662DSxR4G series.
NCP5662DS30R4G 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):
- 9V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.3V @ 2A
- Current - Output:
- 2A
- 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-5
NCP5662DS30R4G FAQ
1.How can I place an order for NCP5662DS30R4G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP5662DS30R4G 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 NCP5662DS30R4G reliable?
The price and inventory of NCP5662DS30R4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP5662DS30R4G is usually 5 days.
3.What payment methods are accepted for NCP5662DS30R4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP5662DS30R4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP5662DS30R4G?
NCP5662DS30R4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP5662DS30R4G 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 NCP5662DS30R4G?
For technical support, including NCP5662DS30R4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP5662DS30R4G requirements.
6.How does Aetrix verify that NCP5662DS30R4G is sourced from the original manufacturer or authorized distributors?
All NCP5662DS30R4G 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 NCP5662DS30R4G meets industry standards.
7.What is the process for return or replacement of NCP5662DS30R4G?
All NCP5662DS30R4G units undergo pre-shipment inspection (PSI). If there is an issue with NCP5662DS30R4G, 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 NCP5662DS30R4G part is unused and in its original packaging.
Return procedure for NCP5662DS30R4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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