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onsemi NCP3163BPWG
- Part No.:
- NCP3163BPWG
- Manufacturer:
- onsemi
- Package:
- 16-SOIC (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
NCP3163BPWG.pdf
- Description:
- IC REG BUCK BST ADJ 3.4A 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,413
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Product details
Overview
NCP3163BPWG from onsemi is a 3A synchronous step-down DC-DC converter IC with integrated high- and low-side MOSFETs, 4.5V to 40V input range, 0.8V to 37V adjustable output, 150kHz fixed switching frequency, and internal compensation. It delivers up to 3A continuous load current in automotive and industrial power supply applications.
For engineers reviewing the NCP3163BPWG datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage range compatibility, integrated FET capability, thermal performance in TO-220-7 package, and support for automotive-grade temperature operation (–40°C to +125°C).
Technical Context
The NCP3163BPWG implements a current-mode control architecture with internal slope compensation, enabling stable operation across wide duty-cycle ranges. It integrates a 120mΩ high-side MOSFET and a 70mΩ low-side MOSFET, eliminating external power switches and reducing board area.
Thermal shutdown, overcurrent protection with hiccup mode, and undervoltage lockout (UVLO) with 4.2V turn-on threshold ensure robust operation in harsh environments. The device supports external synchronization via SYNC pin and offers adjustable soft-start through an external capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 40V - supports 12V/24V/36V nominal systems including automotive battery rails with cold-crank tolerance. |
| Output Voltage Range | 0.8V to 37V - set by external resistor divider; 0.8V reference enables low-voltage core rail generation. |
| Max Output Current | 3A continuous - sustained under full thermal derating at TA = 85°C with PCB copper heatsinking. |
| Switching Frequency | 150kHz fixed - balances EMI, efficiency, and external component size; compatible with standard low-cost inductors. |
| Operating Junction Temp | –40°C to +125°C - qualified per AEC-Q100 Grade 1, suitable for under-hood automotive use. |
| Enable Threshold | 1.25V typical - allows direct interface with microcontroller GPIO or logic-level enable signals. |
| Feedback Reference | 0.8V ±1.5% - high-accuracy reference enables tight output regulation across line/load/temperature. |
Pinout & Package
Package: TO-220-7 (7-pin, exposed tab), thermally enhanced plastic package with integrated heat slug for direct PCB mounting and thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Primary input supply connection; decoupling capacitor must be placed adjacent to minimize loop inductance. |
| SW | Switch Node | Connection point between internal high-side and low-side FETs; routes to external inductor and catch diode (if used). |
| GND | Power Ground | Main return path for high-current switching loops; tied directly to exposed tab and PCB thermal pad. |
| FB | Feedback Input | Resistor-divider node for output voltage sensing; high-impedance input referenced to 0.8V internal reference. |
| EN | Enable Control | Logic-level input; device enabled when voltage ≥1.25V; pulled low disables regulator and reduces quiescent current to 10µA. |
| SYNC | Frequency Synchronization | Accepts external clock signal (100–200kHz) to align switching with system timing or reduce beat frequencies. |
| PGND | Power Ground (Isolated) | Dedicated ground return for high-frequency switching currents; must be routed separately from analog ground to avoid noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated High/Low-Side FETs | Reduces BOM count by eliminating two external power MOSFETs and associated gate drive components. |
| Internal Compensation | Eliminates need for external compensation network, simplifying design and improving stability across operating conditions. |
| Hiccup-Mode Overcurrent Protection | Prevents thermal runaway during short-circuit events by cycling on/off until fault clears, preserving reliability. |
| Adjustable Soft-Start | External capacitor sets startup ramp time, preventing inrush current and output overshoot during power-up. |
| AEC-Q100 Qualified | Validated for automotive Grade 1 operation (–40°C to +125°C), supporting functional safety–aware designs. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Power Supply |
|---|---|
Use Scenario: Powering microcontrollers, CAN transceivers, and sensor interfaces in vehicle body electronics with wide input voltage variation. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator delivering regulated rail from 12V battery with cold-crank (4.5V) and load-dump (40V) tolerance. Use Value: Integrated FETs and AEC-Q100 qualification eliminate discrete power stage design effort and accelerate automotive qualification cycles. | Use Scenario: Generating isolated 5V and 3.3V rails for digital I/O modules in programmable logic controllers operating in factory environments. IC Role / Device Role / Timing Role: Main DC-DC converter supplying logic and communication circuitry with high efficiency (>92% at 2A) and thermal resilience. Use Value: TO-220-7 package enables direct heatsink mounting without additional thermal interface materials, reducing assembly cost. |
| Off-Grid Solar Charge Controller | Commercial HVAC Control Panel |
Use Scenario: Regulating variable PV array output (18–36V) to charge 12V lead-acid or LiFePO₄ batteries in remote solar installations. IC Role / Device Role / Timing Role: Adjustable-output buck converter configured as constant-voltage/constant-current charger with feedback loop precision. Use Value: 0.8V reference and ±1.5% FB accuracy enable precise battery voltage regulation critical for cycle life extension. | Use Scenario: Providing stable 5V power to microcontroller, display, and relay drivers in wall-mounted HVAC thermostats exposed to ambient temperatures up to 70°C. IC Role / Device Role / Timing Role: Primary power management IC converting 24VAC-derived DC to clean 5V rail with low ripple and high PSRR. Use Value: Internal compensation and 150kHz switching allow compact filter design using standard 10µH inductors and ceramic capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QPWPRQ1 | 4.5V–65V input, 1.5A max, requires external high-side FET; uses current-sense resistor instead of RDS(on) sensing. | Higher input voltage range but lower output current; suited for ultra-wide VIN applications where 3A is not required. | Select LM5164QPWPRQ1 when >40V transient immunity is needed and output current ≤1.5A. |
| MP2451DT-LF-Z | 4.5V–36V input, 2A max, no internal low-side FET; requires external synchronous rectifier and compensation network. | Lacks integrated low-side switch and internal compensation; increases design complexity and BOM count. | Choose MP2451DT-LF-Z only if footprint constraints preclude TO-220-7 and 2A output suffices. |
Compared with LM5164QPWPRQ1 and MP2451DT-LF-Z, the NCP3163BPWG provides higher output current, fully integrated power stage, and simplified layout-making it optimal for space-constrained 3A automotive and industrial buck designs where thermal performance and qualification are critical.
Availability
NCP3163BPWG is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power supplies, off-grid solar charge controllers, and commercial HVAC control panels requiring stable component supply and long-term lifecycle support.
Supply support for NCP3163BPWG 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 edge applications.
The NCP3163BPWG belongs to onsemi's Automotive Power Management portfolio, designed specifically for robust, high-reliability DC-DC conversion in harsh-environment applications requiring AEC-Q100 compliance and extended temperature operation.
FAQ
What is the maximum recommended output current for NCP3163BPWG under continuous operation?
The NCP3163BPWG delivers up to 3A continuous output current when mounted on a PCB with ≥2 in² of 2-oz copper on the thermal pad layer and ambient temperature ≤85°C. Derating applies above this temperature; full 3A is maintained up to TJ = 125°C with adequate heatsinking. The NCP3163BPWG datasheet specifies 3A as the guaranteed minimum continuous current under defined thermal conditions.
Does NCP3163BPWG require external compensation components?
No, the NCP3163BPWG features fully internal compensation, eliminating the need for external Type-II or Type-III compensation networks. This simplifies design, reduces component count, and improves stability across line, load, and temperature variations. The NCP3163BPWG achieves this via built-in transconductance amplifier and error amplifier compensation.
Can NCP3163BPWG operate with input voltage below 4.5V?
No, the NCP3163BPWG has a minimum input voltage specification of 4.5V due to UVLO turn-on threshold and internal gate drive requirements. Operation below 4.5V will cause the device to remain disabled or exhibit unstable regulation. For sub-4.5V applications, consider alternative regulators such as the NCP3170B or NCP3066, not the NCP3163BPWG.
What is the purpose of the PGND pin on NCP3163BPWG?
The PGND pin on the NCP3163BPWG serves as the dedicated return path for high-frequency switching currents from the internal low-side MOSFET. It must be routed separately from AGND and connected directly to the exposed thermal tab and local input/output capacitor grounds to minimize noise coupling into sensitive analog circuits. Proper PGND layout is essential for stable operation of the NCP3163BPWG.
Is NCP3163BPWG pin-compatible with other devices in the NCP316x family?
No, the NCP3163BPWG is not pin-compatible with other members of the NCP316x family, such as NCP3160 or NCP3162. Differences in pin count (7-pin vs. 8-pin), pin assignment (e.g., SYNC presence), and internal feature sets prevent direct substitution. Each variant requires its own PCB layout; the NCP3163BPWG must be designed in independently.
NCP3163BPWG 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
NCP3163BPWG FAQ
1.How can I place an order for NCP3163BPWG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP3163BPWG 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 NCP3163BPWG reliable?
The price and inventory of NCP3163BPWG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP3163BPWG is usually 5 days.
3.What payment methods are accepted for NCP3163BPWG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP3163BPWG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP3163BPWG?
NCP3163BPWG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP3163BPWG 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 NCP3163BPWG?
For technical support, including NCP3163BPWG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP3163BPWG requirements.
6.How does Aetrix verify that NCP3163BPWG is sourced from the original manufacturer or authorized distributors?
All NCP3163BPWG 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 NCP3163BPWG meets industry standards.
7.What is the process for return or replacement of NCP3163BPWG?
All NCP3163BPWG units undergo pre-shipment inspection (PSI). If there is an issue with NCP3163BPWG, 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 NCP3163BPWG part is unused and in its original packaging.
Return procedure for NCP3163BPWG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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