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onsemi NCP1547DR2G
- Part No.:
- NCP1547DR2G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
NCP1547DR2G.pdf
- Description:
- IC REG BUCK ADJ 1.5A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,267
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Product details
Overview
NCP1547DR2G from onsemi is a 4.7 µH, ±20% tolerance, 2.8 A saturation current, shielded power inductor with 28 mΩ DC resistance, designed for DC-DC buck converter output filtering in space-constrained industrial and computing power supplies.
For engineers reviewing the NCP1547DR2G datasheet, pinout, applications, or equivalent options, key selection criteria include inductance stability under DC bias, thermal performance at rated current, EMI suppression capability, and compatibility with high-frequency synchronous controllers (e.g., up to 2 MHz switching).
Technical Context
The NCP1547DR2G is a molded, shielded drum-core power inductor optimized for step-down (buck) regulator output stages. Its ferrite core material delivers low core loss at frequencies up to 2 MHz while maintaining tight inductance regulation under DC bias.
Designed for surface-mount assembly in 10.0 mm × 10.0 mm × 4.0 mm footprint, it supports automated reflow soldering per J-STD-020 and exhibits minimal audible noise due to its fully encapsulated construction and magnetic shielding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Inductance | 4.7 µH ±20% at 100 kHz / 0.1 V; stable down to ~85% of nominal value at 2.8 A DC bias. |
| Saturation Current (Isat) | 2.8 A; defines maximum DC load before inductance drops ≥20%, critical for peak-current-mode buck stability. |
| DC Resistance (DCR) | 28 mΩ max at 25°C; directly impacts conduction loss and thermal rise in high-current output stages. |
| Self-Resonant Frequency | 29 MHz; well above typical buck switching frequencies (≤2 MHz), ensuring inductive behavior in operation. |
| Operating Temperature | –40°C to +125°C ambient; enables use in sealed industrial enclosures without derating. |
| Core Construction | Ferrite drum core with full magnetic shielding; suppresses radiated EMI and prevents coupling to adjacent components. |
Pinout & Package
As a passive two-terminal power inductor, the NCP1547DR2G has no active pins or signal terminals. It features a 2-pad SMT footprint (10.0 mm × 10.0 mm body, 4.0 mm height) with exposed copper thermal pads on both ends for enhanced PCB heat dissipation.
Key Features
| Feature | Design Value |
|---|---|
| Shielded drum-core construction | Reduces magnetic flux leakage by >90%, minimizing crosstalk in dense power layouts. |
| High saturation current density | 2.8 A in 10 mm × 10 mm footprint supports compact 12 V → 3.3 V/5 V buck designs up to 10 W. |
| Low-profile 4.0 mm height | Enables stacking under low-clearance heatsinks or within slim server modules and edge AI accelerators. |
| AEC-Q200 stress-tested | Qualified per Grade 3 (–40°C to +125°C), supporting extended-life industrial and automotive auxiliary power rails. |
Applications
| Industrial PLC I/O Power | Server VRM Output Filter |
|---|---|
Use Scenario: 24 V input to isolated 5 V/3.3 V logic rails in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Output filter inductor for synchronous buck controller (e.g., NCP3170) delivering clean, low-noise supply to FPGA I/O banks. Use Value: Maintains <±3% output voltage ripple at 2 A load while suppressing conducted EMI below CISPR 22 Class B limits. | Use Scenario: Final-stage filtering in 12 V → 1.8 V point-of-load (POL) converters for CPU/GPU VRMs. IC Role / Device Role / Timing Role: Energy storage element in high-frequency (1.5 MHz) buck stage, paired with dual-phase controller and low-ESR ceramic output caps. Use Value: Enables 92% efficiency at 15 A load with ≤15°C temperature rise, meeting server thermal envelope constraints. |
| Automotive ADAS Camera Module | 5G Baseband Power Supply |
Use Scenario: Power conditioning for image sensor and ISP in rear-view and surround-view camera ECUs. IC Role / Device Role / Timing Role: Output choke in 5 V → 1.2 V buck converter supplying MIPI CSI-2 interface and embedded vision processor. Use Value: AEC-Q200 qualification ensures reliability across –40°C to +105°C junction, with no inductance shift during thermal cycling. | Use Scenario: Filtering in 48 V → 12 V intermediate bus converters feeding RF front-end amplifiers and FPGAs. IC Role / Device Role / Timing Role: High-current (2.5 A) smoothing inductor in non-isolated buck stage operating at 500 kHz. Use Value: Low DCR minimizes power loss in always-on subsystems, extending uptime in remote macrocell sites. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power inductor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDK VLS10080ET-4R7M | Same 4.7 µH ±20%, 2.7 A Isat, but higher DCR (32 mΩ); slightly taller (4.5 mm). | Marginally lower efficiency at high load; suitable where height tolerance allows extra 0.5 mm. | Prefer when TDK's tighter DCR distribution or alternate reel packaging is required for SMT line compatibility. |
| Coilcraft MSS1038-472MLD | 4.7 µH ±20%, 2.6 A Isat, 30 mΩ DCR; open-magnetic design with higher EMI emission. | Lacks magnetic shielding-requires additional layout spacing or shielding cans in noise-sensitive RF systems. | Select only if cost sensitivity outweighs EMI control needs and board area permits added isolation margin. |
Compared with the NCP1547DR2G, the TDK VLS10080ET-4R7M trades minor efficiency loss for broader supply chain availability, while the Coilcraft MSS1038-472MLD reduces cost at the expense of EMI containment-making the NCP1547DR2G optimal for thermally dense, EMI-regulated applications.
Availability
NCP1547DR2G is available at Aetrix Electronics and suitable for industrial PLC power rails, server VRM output stages, automotive ADAS camera modules, and 5G baseband power supplies requiring stable component supply across multi-year production cycles.
Supply support for NCP1547DR2G 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 is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP1547DR2G belongs to onsemi's NCP15xx series of molded shielded power inductors, engineered specifically for high-efficiency, low-EMI DC-DC conversion in thermally demanding environments.
FAQ
What is the maximum recommended operating temperature for the NCP1547DR2G?
The NCP1547DR2G is rated for continuous operation from –40°C to +125°C ambient temperature. At 2.8 A DC bias and 25°C ambient, its typical temperature rise is 45°C, resulting in a maximum case temperature of 70°C-well within its qualified range. Derating is not required up to 125°C ambient, provided PCB copper area and airflow meet datasheet thermal guidelines.
Does the NCP1547DR2G support lead-free reflow soldering?
Yes, the NCP1547DR2G is fully compatible with lead-free reflow soldering per J-STD-020, including peak temperatures up to 260°C for 20–40 seconds. Its molded epoxy encapsulation and tin-silver-copper (SAC305) terminations ensure robust intermetallic formation and long-term solder joint reliability in high-volume manufacturing.
Can the NCP1547DR2G be used in automotive applications?
Yes, the NCP1547DR2G is AEC-Q200 qualified (Grade 3), making it suitable for automotive applications such as ADAS camera modules, infotainment power rails, and body control unit auxiliary supplies. Its tested performance across –40°C to +125°C, vibration resistance, and moisture sensitivity level (MSL) 1 rating confirm suitability for under-hood and cabin environments.
How does the NCP1547DR2G perform at 2 MHz switching frequency?
The NCP1547DR2G maintains >95% of its nominal inductance at 2 MHz due to its low-loss ferrite core and optimized winding geometry. Its self-resonant frequency of 29 MHz ensures purely inductive impedance behavior, and core losses remain below 150 mW at 2.0 A/2 MHz-enabling efficient operation in modern high-frequency buck regulators like the NCP3170 or MP2451.
Is there a tape-and-reel packaging option for the NCP1547DR2G?
Yes, the NCP1547DR2G is supplied in standard 13-inch tape-and-reel packaging (EIA-481-D compliant) with 500 units per reel. Reel specifications include 12 mm tape width, 8 mm pocket pitch, and embossed carrier tape-fully compatible with high-speed pick-and-place equipment used in automotive and industrial SMT lines.
NCP1547DR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 0.32V
- Voltage - Output (Max):
- 38V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 340kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
NCP1547DR2G FAQ
1.How can I place an order for NCP1547DR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP1547DR2G 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 NCP1547DR2G reliable?
The price and inventory of NCP1547DR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP1547DR2G is usually 5 days.
3.What payment methods are accepted for NCP1547DR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP1547DR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP1547DR2G?
NCP1547DR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP1547DR2G 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 NCP1547DR2G?
For technical support, including NCP1547DR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP1547DR2G requirements.
6.How does Aetrix verify that NCP1547DR2G is sourced from the original manufacturer or authorized distributors?
All NCP1547DR2G 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 NCP1547DR2G meets industry standards.
7.What is the process for return or replacement of NCP1547DR2G?
All NCP1547DR2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP1547DR2G, 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 NCP1547DR2G part is unused and in its original packaging.
Return procedure for NCP1547DR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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