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onsemi NCP3163MNR2G
- Part No.:
- NCP3163MNR2G
- Manufacturer:
- onsemi
- Package:
- 18-VFDFN Exposed Pad
- Datasheet:
-
NCP3163MNR2G.pdf
- Description:
- IC REG BUCK BOOST ADJ 3.4A 18DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,916
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Product details
Overview
NCP3163MNR2G from onsemi is a 3A synchronous step-down DC-DC converter IC with integrated high- and low-side MOSFETs, operating from 3.5V to 40V input, delivering adjustable 0.8V to 37V output, featuring 150kHz fixed switching frequency, internal compensation, and thermal shutdown protection. It is used in industrial power supplies and automotive body electronics requiring robust wide-input regulation.
For engineers reviewing the NCP3163MNR2G datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage range compatibility, integrated FET RDS(on) values (110mΩ high-side / 70mΩ low-side), current-mode control stability, thermal performance in SOIC-8EP packages, and compliance with AEC-Q100 Grade 2 for automotive use cases.
Technical Context
The NCP3163MNR2G implements current-mode PWM control with internal slope compensation to suppress subharmonic oscillation at duty cycles above 50%. Its integrated 110mΩ/70mΩ MOSFET pair enables efficient operation across 3.5V–40V input without external gate drivers.
It features cycle-by-cycle current limiting, undervoltage lockout (UVLO) with 2.5V hysteresis, and a precision 0.8V reference for output voltage setting. The device supports external synchronization up to 500kHz and includes soft-start via an external capacitor on the SS pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 40V - supports 12V/24V/36V industrial and automotive battery rails without pre-regulation. |
| Output Current | 3A continuous - sufficient for powering microcontrollers, sensors, and interface ICs in distributed power systems. |
| Switching Frequency | 150kHz fixed - balances EMI control and inductor size; externally synchronizable up to 500kHz. |
| Feedback Reference | 0.8V ±1% - enables precise output regulation down to sub-1V logic supplies with minimal resistor divider error. |
| High-Side RDS(on) | 110mΩ typical - reduces conduction loss at full load, improving efficiency in 5V–12V output configurations. |
| Thermal Shutdown | 165°C activation - protects against sustained overload or poor heatsinking in enclosed enclosures. |
Pinout & Package
Package: SOIC-8 with exposed thermal pad (SOIC-8EP). Pin count: 8. Thermal pad must be soldered to PCB ground plane for rated 3A operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Connects to unregulated 3.5V–40V supply; bypass with ≥10µF ceramic capacitor near pin. |
| GND | Power Ground | System ground return for power stage and control circuitry; tied to thermal pad. |
| SW | Switch Node | Drives external inductor; requires low-inductance layout to minimize ringing and EMI. |
| FB | Feedback Input | Monitors output voltage via resistive divider; 0.8V threshold sets regulation point. |
| EN | Enable Control | Active-high logic input; pulls below 1.25V to disable regulator and reduce quiescent current to 20µA. |
| SS | Soft-Start | Connects to external capacitor to control output ramp rate and limit inrush current. |
| COMP | Error Amplifier Output | Internal compensation node; no external components required for stable operation. |
| PGND | Power Ground | Dedicated ground for high-current switch path; separate from analog ground for noise isolation. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Buck Topology | Eliminates external Schottky diode, reducing BOM cost and improving efficiency by ~5% at 1A–3A loads. |
| Integrated Power MOSFETs | 110mΩ high-side + 70mΩ low-side FETs enable compact 3A design without discrete driver or FET selection. |
| Current-Mode Control | Provides inherent cycle-by-cycle overcurrent protection and fast transient response to load steps. |
| AEC-Q100 Qualified | Grade 2 (−40°C to +105°C ambient) certification confirms suitability for automotive body control modules and infotainment power rails. |
| Thermal Enhancement | Exposed pad in SOIC-8EP package allows >2.5W dissipation with 2-in² 2-oz copper, enabling 3A at 40VIN/5VOUT. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Power |
|---|---|
Use Scenario: Powering microcontroller, CAN transceiver, and sensor interfaces in door module or seat controller. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator supplying core logic and communication peripherals. Use Value: Wide 3.5V–40V input handles cold-crank and load-dump transients; AEC-Q100 Grade 2 ensures reliability over vehicle lifetime. | Use Scenario: Generating isolated 12V and 5V rails for digital I/O expansion cards in modular PLC chassis. IC Role / Device Role / Timing Role: Non-isolated intermediate-stage DC-DC converter stepping down 24V backplane to local logic supplies. Use Value: Integrated FETs reduce component count vs. controller+external MOSFET solutions; 150kHz frequency eases EMI filtering in dense control cabinets. |
| Smart Lighting Driver Supply | Telecom Remote Unit Power |
Use Scenario: Providing stable 12V bias for LED driver ICs and dimming controllers in outdoor streetlight nodes. IC Role / Device Role / Timing Role: Main DC-DC converter feeding constant-current LED driver stages. Use Value: 40V max input accommodates PoE++ (up to 57V) with input clamp; thermal shutdown prevents failure during ambient temperature excursions. | Use Scenario: Converting 48V telecom rack supply to 3.3V/5V for FPGA, PHY, and memory in remote radio head units. IC Role / Device Role / Timing Role: Point-of-load regulator delivering clean, low-noise power to high-speed digital logic. Use Value: Internal compensation eliminates tuning effort; 0.8V reference supports accurate DDR termination and core voltage scaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5163QPWRQ1 | 4.5V–65V input, 1.5A output, 2.1MHz switching, requires external MOSFETs | Better suited for space-constrained, high-frequency designs needing >1MHz operation | Select when higher frequency and lower output ripple are prioritized over integration and current rating |
| MP2451DT-LF-Z | 4.5V–36V input, 2A output, 2MHz fixed frequency, no AEC-Q100 qualification | Targeted at cost-sensitive industrial and consumer applications without automotive requirements | Select when AEC-Q100 is not required and 2A output suffices for the system load |
Compared with LM5163QPWRQ1 and MP2451DT-LF-Z, the NCP3163MNR2G offers higher output current (3A), wider input range (down to 3.5V), and automotive qualification - making it optimal for ruggedized 12V/24V systems where integration, thermal robustness, and qualification matter most.
Availability
NCP3163MNR2G is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power supplies, smart lighting control units, and telecom remote unit power conversion requiring stable component supply and long-term lifecycle support.
Supply support for NCP3163MNR2G 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 NCP3163MNR2G belongs to onsemi's high-voltage DC-DC converter product line, engineered specifically for reliable, integrated buck regulation in harsh environments including automotive under-hood and industrial control cabinets.
FAQ
What is the maximum input voltage rating for the NCP3163MNR2G?
The NCP3163MNR2G supports a maximum input voltage of 40V. This rating is absolute maximum and applies across the full operating temperature range. Operation beyond 40V may cause permanent damage. For automotive applications subject to load dump, external clamping (e.g., TVS diode) is recommended to limit transient excursions above this threshold. The NCP3163MNR2G itself does not include internal overvoltage protection above 40V.
Does the NCP3163MNR2G require external compensation components?
No, the NCP3163MNR2G features internal compensation and operates stably with only the required input/output capacitors and inductor. The COMP pin is not user-accessible for external network adjustment. This simplifies design and reduces bill-of-materials count. All loop stability parameters are factory-optimized for standard 150kHz operation with typical output capacitor ESR ranges. The NCP3163MNR2G is validated for use with ceramic or polymer output capacitors without additional compensation.
Is the NCP3163MNR2G qualified for automotive applications?
Yes, the NCP3163MNR2G is AEC-Q100 qualified to Grade 2 (−40°C to +105°C ambient operating temperature). It undergoes stress testing including HTOL, TC, UHAST, and ESD per AEC standards. This qualification confirms its suitability for non-safety-critical automotive applications such as body control modules, infotainment power supplies, and lighting control units. The NCP3163MNR2G is not ASIL-rated but meets robustness requirements for Grade 2 deployment.
What thermal management is required for full 3A operation of the NCP3163MNR2G?
Full 3A output at 40VIN/5VOUT requires the SOIC-8EP thermal pad to be soldered to ≥2-in² of 2-oz internal or external copper ground plane. Without this, junction temperature exceeds safe limits under continuous load. Thermal vias (≥6×0.3mm) beneath the pad are mandatory. Ambient temperature must remain ≤70°C for sustained 3A operation. Derating is required above this ambient. The NCP3163MNR2G includes thermal shutdown at 165°C to prevent damage if cooling is insufficient.
Can the NCP3163MNR2G be synchronized to an external clock?
Yes, the NCP3163MNR2G supports external synchronization via the SYNC pin. When enabled, it accepts TTL/CMOS-compatible clock signals from 150kHz up to 500kHz. Synchronization eliminates beat frequencies in multi-rail systems and aids EMI compliance by fixing switching harmonics. The internal oscillator is disabled during sync mode. No external pull-up or level-shifting is needed - the NCP3163MNR2G accepts 3.3V or 5V logic levels directly on the SYNC pin.
NCP3163MNR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 18-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up, Step-Down
- Output Configuration:
- Positive or Negative
- Topology:
- Buck, Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 40V (Switch)
- Current - Output:
- 3.4A (Switch)
- Frequency - Switching:
- 50kHz ~ 300kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-DFN (5x6)
NCP3163MNR2G FAQ
1.How can I place an order for NCP3163MNR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP3163MNR2G 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 NCP3163MNR2G reliable?
The price and inventory of NCP3163MNR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP3163MNR2G is usually 5 days.
3.What payment methods are accepted for NCP3163MNR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP3163MNR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP3163MNR2G?
NCP3163MNR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP3163MNR2G 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 NCP3163MNR2G?
For technical support, including NCP3163MNR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP3163MNR2G requirements.
6.How does Aetrix verify that NCP3163MNR2G is sourced from the original manufacturer or authorized distributors?
All NCP3163MNR2G 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 NCP3163MNR2G meets industry standards.
7.What is the process for return or replacement of NCP3163MNR2G?
All NCP3163MNR2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP3163MNR2G, 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 NCP3163MNR2G part is unused and in its original packaging.
Return procedure for NCP3163MNR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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