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onsemi NCP3163BMNR2G
- Part No.:
- NCP3163BMNR2G
- Manufacturer:
- onsemi
- Package:
- 18-VFDFN Exposed Pad
- Datasheet:
-
NCP3163BMNR2G.pdf
- Description:
- IC REG BUCK BOOST ADJ 3.4A 18DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,777
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Product details
Overview
NCP3163BMNR2G from onsemi is a 3A synchronous step-down DC-DC converter IC with integrated high- and low-side MOSFETs, operating from 4.5 V to 40 V input, delivering adjustable output down to 0.8 V with ±1.5% reference accuracy and 150 kHz fixed switching frequency. It supports automotive-grade temperature range (−40°C to +125°C) and is used in industrial power supplies and automotive body electronics.
For engineers reviewing the NCP3163BMNR2G datasheet, pinout, applications, or equivalent options, key selection considerations include input voltage range compatibility, integrated FET RDS(on) values (110 mΩ high-side / 70 mΩ low-side), thermal performance in SOIC-8EP package, and enable/soft-start control timing behavior.
Technical Context
The NCP3163BMNR2G implements a current-mode PWM control architecture with internal slope compensation for stable operation across wide duty-cycle ranges. It integrates bootstrap diode and gate drivers optimized for 100% duty cycle capability at light load via pulse-skipping mode.
Protection features include thermal shutdown, overcurrent limiting with hiccup mode recovery, and undervoltage lockout (UVLO) with 4.3 V turn-on and 3.9 V turn-off thresholds. The device uses external compensation via Type II network for loop stability tuning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 40 V - supports 12 V/24 V automotive and industrial bus rails without pre-regulation. |
| Output Current | Up to 3 A continuous - enables single-chip solution for mid-power point-of-load conversion. |
| Switching Frequency | 150 kHz fixed - balances EMI filtering cost and inductor size for compact designs. |
| Reference Voltage | 0.8 V ±1.5% - ensures tight output regulation under line/load transients. |
| High-Side RDS(on) | 110 mΩ typical - reduces conduction loss at full load, improving efficiency above 85% at 12 VIN/5 VOUT. |
| Low-Side RDS(on) | 70 mΩ typical - minimizes synchronous rectification loss during freewheeling phase. |
| Operating Junction Temp | −40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood automotive use. |
Pinout & Package
Package: SOIC-8 with exposed thermal pad (SOIC-8EP), 150°C/W θJA (4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 4.5–40 V supply; connects to bulk capacitor and high-side FET source. |
| SW | Switch node | Drives external inductor; requires low-inductance layout to minimize ringing and EMI. |
| GND | Power ground | Common return for power path and control circuitry; tied to thermal pad. |
| FB | Feedback input | Resistive divider input for output voltage regulation; referenced to 0.8 V internal reference. |
| EN | Enable control | Active-high logic input; pulls up internally to VIN for default operation. |
| SS | Soft-start capacitor | Connects external capacitor to control output voltage ramp rate and inrush current. |
| COMP | Compensation node | External Type II compensation network connection for loop stability tuning. |
| PGND | Power ground | Dedicated ground for high-current switch return; must be star-connected to GND pin. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated 110 mΩ/70 mΩ MOSFET pair eliminates external Schottky loss and improves light-load efficiency. |
| Pulse-skipping mode | Enables >90% efficiency at 10 mA load by disabling switching cycles while maintaining regulation. |
| Internal bootstrap diode | Removes need for external bootstrap diode, simplifying layout and reducing BOM count. |
| Hiccup-mode OCP | Current limit triggers automatic restart after fault clearance, preventing thermal runaway during short-circuit events. |
| AEC-Q100 Grade 1 | Qualified for automotive applications requiring −40°C to +125°C operation and robust reliability testing. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Power |
|---|---|
Use Scenario: Powering microcontrollers, CAN transceivers, and sensor interfaces in door modules and seat controllers. IC Role / Device Role / Timing Role: Primary 5 V/3.3 V buck regulator supplying core logic and communication peripherals. Use Value: Integrated FETs and AEC-Q100 qualification eliminate external components and ensure long-term reliability in vibration-prone environments. | Use Scenario: Generating isolated 5 V and 3.3 V rails for digital I/O expansion cards in programmable logic controllers. IC Role / Device Role / Timing Role: Non-isolated intermediate DC-DC stage converting 24 V field bus to logic-level voltages. Use Value: 40 V max input withstands industrial surge transients (IEC 61000-4-5 Level 3), and 150 kHz switching enables small, low-cost filter design. |
| Telecom Remote Radio Unit | Medical Infusion Pump Logic Supply |
Use Scenario: Providing stable 3.3 V supply for FPGA configuration and RF front-end biasing in outdoor base station radios. IC Role / Device Role / Timing Role: Point-of-load regulator with tight output tolerance supporting high-speed digital logic timing margins. Use Value: ±1.5% reference accuracy maintains FPGA core voltage within spec across temperature, ensuring deterministic boot and operation. | Use Scenario: Delivering clean 5 V power to motor drivers and touch-screen controllers in battery-powered infusion pumps. IC Role / Device Role / Timing Role: Main system power converter operating from Li-ion battery (3.0–4.2 V) or 12 V adapter input. Use Value: Pulse-skipping mode extends battery runtime at standby, and thermal shutdown prevents overheating during extended motor activation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2678SD-5.0/NOPB | 5 V fixed output, no adjustable FB; 60 kHz switching; external high-side FET required. | Lacks integrated low-side FET and soft-start; requires more external components. | Preferred where fixed 5 V output suffices and lower EMI is prioritized over component count. |
| MP2451DT-LF-Z | 36 V max input, 2 A output, 340 kHz switching; smaller SOIC-8 footprint but no AEC-Q100 rating. | Higher frequency allows smaller inductors but increases EMI filtering complexity. | Selected for space-constrained industrial designs where automotive qualification is not required. |
Compared with LM2678SD-5.0/NOPB and MP2451DT-LF-Z, the NCP3163BMNR2G offers higher output current, integrated synchronous FETs, and automotive qualification-making it optimal for thermally demanding, safety-critical 12 V/24 V systems where BOM reduction and reliability are primary goals.
Availability
NCP3163BMNR2G is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power supplies, and telecom remote radio units requiring stable component supply and long lifecycle support.
Supply support for NCP3163BMNR2G 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 supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP3163BMNR2G belongs to onsemi's DC-DC converter portfolio designed specifically for rugged, high-input-voltage buck regulation in automotive and industrial environments where integration, thermal robustness, and qualification compliance are critical.
FAQ
What is the maximum input voltage rating for the NCP3163BMNR2G?
The NCP3163BMNR2G supports a maximum input voltage of 40 V, enabling direct connection to 24 V industrial buses and 12 V automotive systems with transient margin. This rating is validated across the full operating temperature range and includes built-in overvoltage protection that disables switching if VIN exceeds 42 V. The NCP3163BMNR2G maintains regulation and thermal stability up to this limit without external clamping.
Does the NCP3163BMNR2G require an external bootstrap diode?
No, the NCP3163BMNR2G integrates a bootstrap diode internally, eliminating the need for an external component. This reduces PCB area, BOM count, and layout complexity while improving reliability. The internal diode is rated for continuous bootstrap charging current and operates efficiently across the full input voltage range. Designers using the NCP3163BMNR2G can route the BST pin directly to the SW node without additional discrete parts.
What is the purpose of the SS pin on the NCP3163BMNR2G?
The SS (Soft-Start) pin on the NCP3163BMNR2G controls the output voltage ramp rate during startup by connecting an external capacitor. This capacitor sets the time constant for gradual FB reference voltage rise, limiting inrush current into output capacitors and preventing input voltage droop. For the NCP3163BMNR2G, a typical 10 nF capacitor yields ~10 ms soft-start time. The SS pin also provides fault reset functionality during hiccup-mode overcurrent events.
Is the NCP3163BMNR2G qualified for automotive applications?
Yes, the NCP3163BMNR2G is AEC-Q100 Grade 1 qualified, meaning it is tested and certified for operation from −40°C to +125°C junction temperature and meets rigorous automotive reliability standards including HTOL, TC, and ESD. This qualification makes the NCP3163BMNR2G suitable for under-hood and cabin applications such as body control modules and infotainment power supplies where long-term stability and failure-rate predictability are mandatory.
How does the NCP3163BMNR2G handle overcurrent conditions?
The NCP3163BMNR2G employs cycle-by-cycle peak current limiting with hiccup-mode recovery. When sensed current exceeds the threshold, switching halts for a fixed timeout period before attempting restart. This prevents thermal runaway during sustained shorts while minimizing average power dissipation. The hiccup interval is internally set and does not require external timing components. During normal overload, the NCP3163BMNR2G maintains regulation until the limit is reached, then enters hiccup mode-ensuring safe operation without latch-off.
NCP3163BMNR2G 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-DFN (5x6)
NCP3163BMNR2G FAQ
1.How can I place an order for NCP3163BMNR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP3163BMNR2G 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 NCP3163BMNR2G reliable?
The price and inventory of NCP3163BMNR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP3163BMNR2G is usually 5 days.
3.What payment methods are accepted for NCP3163BMNR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP3163BMNR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP3163BMNR2G?
NCP3163BMNR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP3163BMNR2G 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 NCP3163BMNR2G?
For technical support, including NCP3163BMNR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP3163BMNR2G requirements.
6.How does Aetrix verify that NCP3163BMNR2G is sourced from the original manufacturer or authorized distributors?
All NCP3163BMNR2G 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 NCP3163BMNR2G meets industry standards.
7.What is the process for return or replacement of NCP3163BMNR2G?
All NCP3163BMNR2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP3163BMNR2G, 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 NCP3163BMNR2G part is unused and in its original packaging.
Return procedure for NCP3163BMNR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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