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onsemi NCV3163MNR2G
- Part No.:
- NCV3163MNR2G
- Manufacturer:
- onsemi
- Package:
- 18-VFDFN Exposed Pad
- Datasheet:
-
NCV3163MNR2G.pdf
- Description:
- IC REG BUCK BOOST ADJ 3.4A 18DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,807
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Product details
Overview
NCV3163MNR2G from onsemi is a high-efficiency, current-mode PWM step-down DC-DC converter IC designed for automotive applications. It operates from 4.5 V to 40 V input, delivers up to 1.5 A output current, features internal 150 mΩ N-channel MOSFET switch, and supports adjustable switching frequency from 100 kHz to 1 MHz. It is used in automotive body control modules for stable 5 V or 3.3 V rail generation.
For engineers reviewing the NCV3163MNR2G datasheet, pinout, applications, or equivalent options, key selection considerations include its AEC-Q100 Grade 1 qualification, integrated high-side switch, cycle-by-cycle current limiting, thermal shutdown, and wide input voltage range suitable for cold-crank and load-dump conditions.
Technical Context
The NCV3163MNR2G implements fixed-frequency current-mode control with external compensation, enabling stable regulation under dynamic load transients. Its internal N-channel MOSFET switch and integrated bootstrap diode simplify layout while maintaining efficiency across 4.5–40 V input.
It includes undervoltage lockout (UVLO) with hysteresis, overtemperature protection, and soft-start via external capacitor. The error amplifier reference is trimmed to ±1.5% at 1.235 V, supporting precise output voltage setting with resistive feedback.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 40 V - Supports automotive battery systems including cold-crank (4.5 V) and load-dump (40 V) events. |
| Output Current | Up to 1.5 A - Sufficient for powering microcontrollers, sensors, and CAN transceivers in body electronics. |
| Switching Frequency | 100 kHz to 1 MHz - Adjustable via resistor; enables optimization of size (higher fSW → smaller inductor/capacitor) vs. EMI/noise. |
| Internal Switch RDS(on) | 150 mΩ (typ.) - Reduces conduction loss and eliminates need for external high-side FET and driver. |
| Reference Voltage | 1.235 V ±1.5% - Enables accurate output voltage setting (e.g., 3.3 V or 5 V) using standard resistor tolerances. |
| Quiescent Current | 2.5 mA (typ.) - Minimizes standby power draw in always-on vehicle subsystems. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C) - Qualified for under-hood and cabin-mounted automotive ECUs. |
Pinout & Package
NCV3163MNR2G is housed in a thermally enhanced 8-pin SOIC package (SOIC-8 NB) with exposed thermal pad for improved power dissipation in automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Connects to unregulated automotive supply (4.5–40 V); requires local ceramic bypass capacitor. |
| GND | Power Ground | Common return path for input/output currents and IC substrate; tied to thermal pad. |
| SW | Switch Node | Drives external inductor; connects to internal MOSFET drain and bootstrap capacitor anode. |
| FB | Feedback Input | Monitors output voltage via resistive divider; regulates output by comparing to 1.235 V reference. |
| COMP | Compensation Node | Connects external Type II/III compensation network to stabilize current-mode control loop. |
| RT | Frequency Set | Resistor-to-ground sets switching frequency (100 kHz–1 MHz); determines timing capacitor charge rate. |
| EN | Enable Input | Active-high logic input; pulls low to disable regulator and reduce quiescent current to 10 µA. |
| BOOT | Bootstrap Supply | Provides gate drive voltage for internal high-side MOSFET via external bootstrap capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated High-Side MOSFET | Eliminates external switch and gate driver, reducing BOM count and PCB area in space-constrained ECUs. |
| Cycle-by-Cycle Current Limit | Prevents inductor saturation and MOSFET failure during short-circuit or overload without external sensing components. |
| Adjustable Soft-Start | External capacitor controls ramp time, preventing inrush current and output overshoot during power-up. |
| Thermal Shutdown with Hysteresis | Shuts down at 165 °C and restarts at 145 °C, protecting against sustained overloads in sealed enclosures. |
| Bootstrap Diode Integration | Removes need for external bootstrap diode, simplifying layout and improving reliability in high-vibration environments. |
Applications
| Body Control Module (BCM) | Door Module |
|---|---|
Use Scenario: Powering microcontroller, LIN transceiver, and window motor drivers in centralized vehicle body electronics. IC Role / Device Role / Timing Role: Primary 5 V buck regulator supplying core logic and communication interfaces. Use Value: Maintains regulation during 6 V cold-crank events and rejects 40 V load-dump transients without external TVS clamping. | Use Scenario: Providing stable 3.3 V rail for door lock actuator MCU and position sensor in distributed door modules. IC Role / Device Role / Timing Role: Local point-of-load regulator with integrated switch and thermal protection. Use Value: Delivers 1.5 A peak current for motor actuation pulses while operating continuously at −40 °C to +125 °C ambient. |
| Seat Control Unit | Roof Module |
Use Scenario: Generating 5 V supply for seat position memory MCU and heater control circuitry in premium seating systems. IC Role / Device Role / Timing Role: Automotive-grade DC-DC converter with AEC-Q100 Grade 1 qualification. Use Value: Ensures uninterrupted operation during engine start-stop cycles and meets EMC requirements per CISPR 25 Class 5. | Use Scenario: Powering sunroof controller, ambient light sensor, and rain sensor in overhead console assemblies. IC Role / Device Role / Timing Role: Compact, thermally robust buck regulator for space-limited roof-mounted modules. Use Value: Exposed thermal pad enables direct mounting to metal housing for passive heat sinking without heatsink or fan. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2678SD-5.0/NOPB | Fixed 5 V output; no adjustable frequency; higher quiescent current (5 mA); not AEC-Q100 qualified. | Suitable for industrial or commercial non-automotive 5 V point-of-load use only. | Select when fixed 5 V output suffices and automotive qualification is unnecessary. |
| MPQ4420AGL-AEC1-Z | Pin-compatible 1.5 A buck; AEC-Q100 Grade 1; 3.3–36 V input; integrated compensation; no RT pin. | Requires no external frequency-setting resistor; simpler design but less frequency flexibility. | Choose for drop-in replacement where board space is critical and 100 kHz–1 MHz tuning is not required. |
Compared with LM2678SD-5.0/NOPB, NCV3163MNR2G offers automotive qualification and lower IQ; versus MPQ4420AGL-AEC1-Z, it provides adjustable switching frequency and external compensation for optimized transient response in demanding ECU designs.
Availability
NCV3163MNR2G is available at Aetrix Electronics and suitable for automotive body electronics, door modules, and seat control units requiring stable component supply under harsh temperature and voltage conditions.
Supply support for NCV3163MNR2G 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 NCV3163MNR2G belongs to onsemi's automotive-qualified DC-DC converter product line, engineered specifically for reliable power conversion in body electronics and chassis control units operating across extended temperature and voltage ranges.
FAQ
What is the maximum output current capability of the NCV3163MNR2G?
The NCV3163MNR2G delivers up to 1.5 A of continuous output current under typical thermal conditions (TA = 25 °C, 4-layer PCB with 2 oz copper). Actual current depends on input-output voltage differential, ambient temperature, and PCB thermal design. Derating is required above 85 °C ambient, and thermal shutdown activates at 165 °C junction temperature to protect the NCV3163MNR2G.
Does the NCV3163MNR2G require an external bootstrap diode?
No, the NCV3163MNR2G integrates the bootstrap diode internally. This eliminates the need for an external diode between BOOT and SW pins, simplifying layout and improving reliability-especially in automotive environments subject to vibration and thermal cycling. The internal bootstrap diode supports proper gate drive for the integrated high-side MOSFET across the full operating temperature range of the NCV3163MNR2G.
Can the NCV3163MNR2G be used in non-automotive applications?
Yes, the NCV3163MNR2G can be used in industrial or commercial applications requiring a robust 1.5 A buck regulator with wide input range (4.5–40 V) and integrated switch. However, its AEC-Q100 Grade 1 qualification, enhanced ESD tolerance, and automotive-grade screening make it especially suited for automotive use. For cost-sensitive non-automotive designs, alternatives like the MC34063 may be considered-but the NCV3163MNR2G remains viable where reliability and thermal performance are prioritized.
How is the switching frequency set on the NCV3163MNR2G?
The switching frequency of the NCV3163MNR2G is set using an external resistor connected from the RT pin to GND. The value determines oscillator timing: 100 kΩ yields ~100 kHz, 10 kΩ yields ~1 MHz. Frequency scales approximately linearly with resistor value. This adjustment allows designers to balance inductor size, EMI filtering requirements, and efficiency-critical for meeting CISPR 25 emissions limits in automotive applications using the NCV3163MNR2G.
Is the NCV3163MNR2G pin-compatible with other onsemi buck regulators?
No, the NCV3163MNR2G is not pin-compatible with other onsemi buck regulators such as the NCV3063 or NCV8843. Its SOIC-8 NB package, pin assignment (e.g., dedicated COMP, RT, BOOT), and integrated bootstrap diode distinguish its layout and routing requirements. Board redesign is required when substituting the NCV3163MNR2G into existing designs using different regulators-even within the same NCV family.
NCV3163MNR2G 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-DFN (5x6)
NCV3163MNR2G FAQ
1.How can I place an order for NCV3163MNR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV3163MNR2G 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 NCV3163MNR2G reliable?
The price and inventory of NCV3163MNR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV3163MNR2G is usually 5 days.
3.What payment methods are accepted for NCV3163MNR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV3163MNR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV3163MNR2G?
NCV3163MNR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV3163MNR2G 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 NCV3163MNR2G?
For technical support, including NCV3163MNR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV3163MNR2G requirements.
6.How does Aetrix verify that NCV3163MNR2G is sourced from the original manufacturer or authorized distributors?
All NCV3163MNR2G 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 NCV3163MNR2G meets industry standards.
7.What is the process for return or replacement of NCV3163MNR2G?
All NCV3163MNR2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV3163MNR2G, 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 NCV3163MNR2G part is unused and in its original packaging.
Return procedure for NCV3163MNR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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