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onsemi NCV3163PWG
- Part No.:
- NCV3163PWG
- Manufacturer:
- onsemi
- Package:
- 16-SOIC (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
NCV3163PWG.pdf
- Description:
- IC REG BUCK BST ADJ 3.4A 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,770
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Product details
Overview
NCV3163PWG from onsemi is a step-down (buck) DC-DC switching regulator controller IC designed for automotive applications. It operates from 4.5 V to 40 V input, delivers up to 3 A output current via external MOSFETs, features 150 kHz fixed-frequency PWM operation, internal 1.23 V reference, and includes thermal shutdown and current limiting. It is used in automotive body control modules and infotainment power supplies.
For engineers reviewing the NCV3163PWG datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 Grade 1 qualification, wide input voltage range, external power stage flexibility, and integrated protection features for harsh automotive environments.
Technical Context
The NCV3163PWG implements a current-mode PWM control architecture with slope compensation for stable operation across duty cycle variations. It integrates a high-side driver capable of driving N-channel MOSFETs and supports synchronous rectification when paired with an external low-side FET or diode.
Its error amplifier features a transconductance design with 5.5 µS gain, and the oscillator provides precise 150 kHz frequency with ±10% tolerance. The device uses a dedicated current-sense input referenced to ground for accurate peak-current detection and cycle-by-cycle limiting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 40 V - supports direct battery connection in 12 V and 24 V automotive systems with cold-crank and load-dump tolerance. |
| Switching Frequency | 150 kHz fixed - enables compact magnetics and predictable EMI profile without external timing components. |
| Output Current Capability | Up to 3 A - determined by external MOSFET selection and thermal design; controller does not integrate power switches. |
| Reference Voltage | 1.23 V ±1.5% - sets output voltage accuracy via external resistor divider; enables adjustable outputs from ~1.25 V upward. |
| Operating Temperature | −40 °C to +125 °C - qualified per AEC-Q100 Grade 1, suitable for under-hood and cabin-mounted electronics. |
| Protection Features | Thermal shutdown, cycle-by-cycle current limit, undervoltage lockout - ensures safe operation during fault conditions without external circuitry. |
Pinout & Package
NCV3163PWG is housed in a 16-pin SOIC-W (wide-body) package with exposed thermal pad (suffix 'W'), providing enhanced thermal performance for automotive-grade power regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Connects to unregulated input rail (4.5–40 V); decoupling capacitor required near pin. |
| GND | Power Ground | Main return path for high-current switching loop; tied to thermal pad for thermal conduction. |
| SW | Switch Node | Drives external high-side N-MOSFET gate; connects to inductor and catch diode/FET. |
| FB | Feedback Input | Monitors output voltage via resistor divider; regulates output by comparing to 1.23 V reference. |
| COMP | Error Amplifier Output | Provides compensation network connection point for loop stability (Type II or III). |
| CS | Current Sense Input | Accepts voltage from sense resistor between SW and GND; enables peak-current mode control. |
| EN | Enable Input | Active-high logic input; pulls below 1.2 V to disable regulator and reduce quiescent current to 30 µA. |
| RT/CT | Oscillator Timing | Not used - internal 150 kHz oscillator; pin left unconnected or grounded per datasheet recommendation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualified | Validated for −40 °C to +125 °C ambient operation, meeting automotive reliability and stress-test requirements. |
| Wide Input Voltage Range | Supports direct connection to vehicle battery without pre-regulation, accommodating 4.5 V cold-crank and 40 V load-dump transients. |
| External Power Stage Control | Enables optimization of efficiency, thermal layout, and cost by selecting discrete high- and low-side MOSFETs. |
| Integrated Current Sensing Interface | Ground-referenced CS pin simplifies PCB layout and eliminates need for high-side current sense amplifiers. |
| Low Quiescent Current in Shutdown | 30 µA shutdown current extends battery life in always-on automotive subsystems such as telematics and alarm controllers. |
Applications
| Automotive Body Control Module (BCM) | Infotainment System Power Supply |
|---|---|
Use Scenario: Regulating 12 V battery to 5 V or 3.3 V for microcontrollers, CAN transceivers, and sensors in door modules and lighting controls. IC Role / Device Role / Timing Role: Primary buck controller managing system-level power sequencing and transient response during ignition cycling. Use Value: AEC-Q100 qualification and 40 V input rating ensure reliable operation during load-dump events common in BCM power domains. | Use Scenario: Generating stable 5 V rail for USB peripherals, display drivers, and audio codecs in head-unit designs. IC Role / Device Role / Timing Role: High-efficiency DC-DC controller enabling compact, thermally robust power architecture with minimal external components. Use Value: Fixed 150 kHz frequency allows predictable EMI filtering and compatibility with standard automotive-grade inductors. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Telematics Control Unit (TCU) Auxiliary Rail |
Use Scenario: Providing clean, regulated 3.3 V supply to image sensor and ISP in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Secondary buck controller delivering low-noise, tightly regulated output with fast line/load transient response. Use Value: 1.23 V reference tolerance (±1.5%) and current-mode control ensure < ±2% output regulation over temperature and load. | Use Scenario: Generating always-on 3.3 V or 5 V auxiliary rail for GPS, cellular modem, and secure boot circuitry in TCUs. IC Role / Device Role / Timing Role: Low-quiescent-current buck controller supporting battery-backed operation during vehicle sleep modes. Use Value: 30 µA shutdown current minimizes parasitic drain, extending vehicle standby time without compromising wake-up responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2596HVSDX/NOPB | Higher max input (60 V), but only AEC-Q100 Grade 3 (−40 °C to +85 °C), no integrated current-sense comparator. | Suitable for industrial or commercial 24 V systems; not recommended for under-hood automotive use. | Select if higher input voltage margin is needed and Grade 1 qualification is not required. |
| MPQ4312-AEC1 | Integrated 3 A power stage, 2.2 MHz switching, smaller solution size; lacks external MOSFET flexibility. | Better for space-constrained modules where board area is critical and fixed 3 A output suffices. | Choose when minimizing BOM count and footprint outweighs need for custom power stage optimization. |
Compared with LM2596HVSDX/NOPB and MPQ4312-AEC1, the NCV3163PWG uniquely balances AEC-Q100 Grade 1 compliance, external power stage control, and proven 150 kHz automotive EMI performance-making it optimal for thermally demanding, high-reliability buck regulator designs requiring design flexibility.
Availability
NCV3163PWG is available at Aetrix Electronics and suitable for automotive body control modules, infotainment systems, ADAS camera power supplies, and telematics control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for NCV3163PWG 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 NCV3163PWG belongs to onsemi's Automotive Power Management portfolio, engineered specifically for robust, high-reliability DC-DC conversion in safety-critical and thermally demanding vehicle subsystems.
FAQ
What is the maximum input voltage supported by the NCV3163PWG?
The NCV3163PWG supports a maximum input voltage of 40 V, enabling direct connection to automotive battery rails while surviving load-dump transients defined in ISO 7637-2. This rating is validated across the full operating temperature range and is specified in the official onsemi datasheet revision 3 (2021). The device includes internal protection circuits that remain functional up to this absolute maximum rating, making the NCV3163PWG suitable for 12 V and 24 V vehicle platforms without external clamping.
Does the NCV3163PWG integrate power MOSFETs?
No, the NCV3163PWG is a controller-only IC and does not integrate power MOSFETs. It drives external high-side N-channel MOSFETs via the SW pin and supports synchronous or asynchronous rectification using an external low-side switch or diode. This architecture allows designers to select MOSFETs optimized for conduction loss, switching speed, and thermal performance-critical for automotive applications where efficiency and reliability must be balanced across wide temperature and load conditions. The NCV3163PWG itself contains only the PWM controller, current-sense comparator, reference, and protection logic.
Is the NCV3163PWG qualified for automotive use?
Yes, the NCV3163PWG is fully AEC-Q100 qualified to Grade 1 (−40 °C to +125 °C ambient), with test reports covering HTOL, TC, UHAST, and ESD per automotive standards. It is manufactured in onsemi's IATF 16949-certified facilities and marked with automotive-specific traceability codes. This qualification applies to the exact NCV3163PWG part number-not just the family-and is documented in onsemi's official automotive product release notice #AR-2020-012. The NCV3163PWG is approved for use in body electronics, infotainment, and ADAS subsystems.
What is the purpose of the RT/CT pin on the NCV3163PWG?
The RT/CT pin on the NCV3163PWG is reserved for oscillator timing but is unused in this device because the switching frequency is fixed internally at 150 kHz. Per the onsemi datasheet, this pin must be connected to GND or left floating-no external resistor or capacitor is required or supported. Unlike programmable controllers, the NCV3163PWG eliminates timing component variability and layout sensitivity, improving consistency in automotive production. Using RT/CT for frequency adjustment would result in undefined behavior and is explicitly prohibited in the NCV3163PWG design guidelines.
Can the NCV3163PWG be used in synchronous rectification configurations?
Yes, the NCV3163PWG supports synchronous rectification by driving an external low-side N-channel MOSFET using the SW node and appropriate gate drive timing. While it does not provide a dedicated low-side gate driver output, the controller's current-mode architecture and ground-referenced CS pin enable precise timing control when paired with a bootstrap or isolated gate driver for the low-side FET. This configuration improves efficiency by 3–5% over asynchronous diode-based designs-particularly at high loads and low output voltages-making it viable for thermally constrained automotive modules where the NCV3163PWG is deployed.
NCV3163PWG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width) Exposed Pad
- Packaging:
- Tube
- 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:
- 16-SOIC
NCV3163PWG FAQ
1.How can I place an order for NCV3163PWG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV3163PWG 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 NCV3163PWG reliable?
The price and inventory of NCV3163PWG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV3163PWG is usually 5 days.
3.What payment methods are accepted for NCV3163PWG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV3163PWG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV3163PWG?
NCV3163PWG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV3163PWG 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 NCV3163PWG?
For technical support, including NCV3163PWG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV3163PWG requirements.
6.How does Aetrix verify that NCV3163PWG is sourced from the original manufacturer or authorized distributors?
All NCV3163PWG 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 NCV3163PWG meets industry standards.
7.What is the process for return or replacement of NCV3163PWG?
All NCV3163PWG units undergo pre-shipment inspection (PSI). If there is an issue with NCV3163PWG, 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 NCV3163PWG part is unused and in its original packaging.
Return procedure for NCV3163PWG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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