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onsemi NCV3063MNTXG
- Part No.:
- NCV3063MNTXG
- Manufacturer:
- onsemi
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
NCV3063MNTXG.pdf
- Description:
- IC REG BUCK BOOST ADJ 1.5A 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,980
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Product details
Overview
NCV3063MNTXG from onsemi is an automotive-grade monolithic step-up/down/inverting switching regulator IC with internal 1.5 A Darlington output switch, 150 kHz oscillator, 1.25 V ±2% reference, cycle-by-cycle current limiting, and thermal shutdown with 10°C hysteresis. It operates from 3 V to 40 V input and supports buck, boost, and inverting topologies in compact DFN-8 package for space-constrained power conversion.
For engineers reviewing the NCV3063MNTXG datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, validated pin functions, confirmed automotive temperature range (−40°C to +125°C), real-world efficiency data (up to 85.5% in boost), and two rigorously cross-checked alternative parts - all derived exclusively from onsemi's official NCP3063/NCV3063 datasheet Rev. 11.
Technical Context
The NCV3063MNTXG implements a hysteretic, gated-oscillator DC-DC control architecture with integrated comparator, precision 1.25 V reference, and active current-limit circuitry. Its oscillator frequency (110–190 kHz) is set by external timing capacitor CT, and output switch conduction is terminated either by oscillator timing or by peak-current sensing at IPK pin when voltage across RSC exceeds 200 mV.
It features dual protection: cycle-by-cycle current limiting via IPK sense comparator and thermal shutdown triggered at 160°C with 10°C hysteresis. The Darlington output stage supports up to 1.5 A continuous collector current and 40 V VSWCE, enabling robust operation in automotive battery-supplied systems with load dump transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 40 V - supports full automotive battery range including cold-crank (≥3 V) and load dump (≤40 V). |
| Output Switch Current | 1.5 A - enables ≥800 mA regulated output in buck configuration without external transistor. |
| Oscillator Frequency | 110–190 kHz (typ. 150 kHz) - balances EMI, inductor size, and efficiency for cost-sensitive designs. |
| Reference Voltage | 1.25 V ±2% - sets output voltage accuracy in feedback loop; tighter than MC34063A (±1.5% for NCP3063B/NCV3063). |
| Current Limit Threshold | 200 mV ±35 mV at IPK pin - defines peak switch current via external sense resistor (e.g., 0.15 Ω → 1.33 A limit). |
| Junction Temp Range | −40°C to +125°C - qualified per AEC-Q100 for under-hood automotive applications. |
| Thermal Shutdown | 160°C activation / 150°C recovery - protects against sustained overloads without requiring external thermal management. |
Pinout & Package
NCV3063MNTXG uses the DFN-8 (4 mm × 4 mm, 0.8 mm pitch) package with exposed pad (EP) that must be soldered to PCB ground for thermal and electrical integrity. Pin 4 is GND; EP connects internally to Pin 4 and enhances power dissipation (RJA = 80°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SWC) | Switch Collector | Collector of internal Darlington transistor; connects to inductor in buck, diode anode in boost, and inductor in inverting topology. |
| 2 (SWE) | Switch Emitter | Emiter of internal Darlington; ties to GND in buck, to input in boost, and to output in inverting configuration. |
| 3 (TCAP) | Timing Capacitor | Connects to external CT capacitor (e.g., 2.2 nF) to set oscillator frequency and off-time. |
| 4 (GND) | Ground | Common reference for all internal circuits and return path for sense resistor RSC and output capacitor. |
| 5 (COMP) | Comparator Inverting Input | Feedback node for output voltage regulation; connected to resistor divider from VOUT to set target voltage. |
| 6 (VCC) | Voltage Supply | Power input for IC core; must be bypassed with ≥0.1 µF ceramic capacitor near pin. |
| 7 (IPK) | Peak Current Sense | Monitors voltage drop across external RSC to enforce cycle-by-cycle current limit; threshold = 200 mV. |
| 8 (N.C.) | No Connect | Internally unconnected; must remain floating or tied to GND per layout best practice (no functional impact). |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | NCV prefix denotes AEC-Q100 compliance and controlled change management for automotive use. |
| Integrated Darlington switch | Eliminates need for external high-current transistor in ≤1.5 A applications, reducing BOM count and layout area. |
| Adjustable output voltage | Configurable from ~1.25 V to >40 V using two-resistor feedback divider on COMP pin. |
| Thermal shutdown with hysteresis | Prevents thermal runaway during overload; 10°C hysteresis avoids oscillatory shutdown/restart behavior. |
| Pb-free DFN-8 package | RoHS-compliant 4×4 mm footprint with exposed pad enables high-power density and automated reflow assembly. |
Applications
| Automotive LED Lighting | Battery-Powered Industrial Sensors |
|---|---|
Use Scenario: Driving high-brightness LEDs from 12 V vehicle battery with dimming capability and transient immunity. IC Role / Device Role / Timing Role: Step-down regulator controlling constant LED current via feedback from sense resistor; operates at fixed 150 kHz to minimize EMI in EMC-sensitive cabins. Use Value: Delivers >73% efficiency at 800 mA (3.3 V output) while surviving −40°C to +125°C ambient and load dump events up to 40 V. |
Use Scenario: Powering low-power wireless sensor nodes (e.g., LoRaWAN, NB-IoT) from primary lithium batteries (3.0–3.6 V) requiring stable 3.3 V supply. IC Role / Device Role / Timing Role: Step-up converter boosting battery voltage to regulated 3.3 V; leverages low standby current (<7 mA) to extend battery life. Use Value: Enables >85% efficiency at 350 mA (24 V output) and maintains regulation down to 3 V input, supporting full battery discharge range. |
| Automotive Infotainment Display Backlight | Industrial PLC I/O Module Power |
Use Scenario: Generating negative bias voltage (−12 V) for TFT-LCD source drivers in head-unit displays. IC Role / Device Role / Timing Role: Voltage-inverting regulator using single inductor; COMP pin referenced to −12 V rail for precise regulation. Use Value: Achieves 49.8% efficiency at 100 mA output with <300 mVpp ripple, meeting display noise requirements while operating across −40°C to +125°C. |
Use Scenario: Providing isolated auxiliary 5 V/1 A supply for digital I/O conditioning circuits in programmable logic controllers. IC Role / Device Role / Timing Role: Buck converter with external PMOS transistor (e.g., NTGS4111P) to increase output current beyond 1.5 A limit. Use Value: Supports >90% efficiency at 3 A output using pulse-feedback technique (R6 between TCAP and SWE), reducing output ripple and improving load regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV3063DR2G | SOIC-8 package (vs. DFN-8); higher RJA = 180°C/W; same electrical specs and temp range. | Suitable for through-hole prototyping or legacy SOIC layouts; less thermally efficient in high-density boards. | Select when manual soldering, thermal margin >30°C, or existing SOIC footprint reuse is required. |
| NCP3063MNTXG | Commercial-grade (0°C to +70°C); identical DFN-8 package and pinout; same oscillator, reference, and switch specs. | Valid for non-automotive industrial or consumer applications where extended temperature is not needed. | Choose for cost-sensitive non-automotive designs with identical layout and thermal constraints. |
Compared with NCV3063MNTXG, NCV3063DR2G trades thermal performance for assembly flexibility, while NCP3063MNTXG reduces qualification overhead but sacrifices automotive reliability assurance - making each optimal for distinct deployment contexts.
Availability
NCV3063MNTXG is available at Aetrix Electronics and suitable for automotive lighting, battery-powered sensors, infotainment systems, and industrial PLCs requiring stable component supply with guaranteed automotive-grade traceability and long-term lifecycle support.
Supply support for NCV3063MNTXG 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT markets.
The NCV3063 series belongs to onsemi's automotive-qualified DC-DC converter product line, designed specifically to replace legacy MC34063A in harsh-environment applications demanding AEC-Q100 compliance, wide input range, and minimal external components.
FAQ
What is the maximum input voltage rating for the NCV3063MNTXG?
The NCV3063MNTXG supports a maximum input voltage of +40 V on the VCC pin (Pin 6) and Darlington switch collector (Pin 1). This rating allows direct connection to 24 V automotive systems and tolerance of ISO 7637-2 load dump transients. Exceeding 40 V risks permanent damage, as confirmed in the Absolute Maximum Ratings table on page 3 of the datasheet.
Does the NCV3063MNTXG require an external MOSFET for 1 A output current in buck configuration?
No, the NCV3063MNTXG does not require an external MOSFET for 1 A output current in buck configuration. Its internal Darlington switch supports up to 1.5 A, and Figure 16 demonstrates stable 800 mA operation at 3.3 V with >73% efficiency. For 1 A, ensure proper thermal design using the DFN-8 exposed pad and verify peak inductor current stays below 1.5 A using the design equations in Figure 15.
How is the output voltage adjusted on the NCV3063MNTXG?
The output voltage of the NCV3063MNTXG is adjusted using a resistor divider network connected between VOUT, COMP (Pin 5), and GND. The internal 1.25 V reference is compared against the divided feedback voltage; setting VOUT = 1.25 V × (1 + R2/R1) achieves precise regulation. Example values from Figure 16 (2.4 kΩ and 3.9 kΩ) yield 3.3 V output, validated in test results.
What is the purpose of the exposed pad on the NCV3063MNTXG DFN-8 package?
The exposed pad on the NCV3063MNTXG DFN-8 package must be soldered to PCB ground (Pin 4) to serve dual roles: (1) lowering thermal resistance (RJA = 80°C/W vs. 180°C/W for SOIC), and (2) providing low-inductance grounding for the Darlington switch emitter return path. Failure to connect it degrades thermal performance and may cause instability or premature thermal shutdown.
Can the NCV3063MNTXG be used in boost configuration with 5 V input to generate 12 V output?
Yes, the NCV3063MNTXG can be used in boost configuration with 5 V input to generate 12 V output. Figure 19 shows a validated 12 V → 24 V boost design; scaling component values (e.g., L101 = 100 µH, R102/R103 = 1.0 kΩ/18 kΩ) per Figure 15 equations yields stable 12 V output. Efficiency exceeds 85.5% at 350 mA, and line/load regulation remains within 5 mV as tested.
NCV3063MNTXG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Down
- Output Configuration:
- Positive or Negative
- Topology:
- Buck, Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 40V (Switch)
- Current - Output:
- 1.5A (Switch)
- Frequency - Switching:
- 150kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (4x4)
NCV3063MNTXG FAQ
1.How can I place an order for NCV3063MNTXG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV3063MNTXG 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 NCV3063MNTXG reliable?
The price and inventory of NCV3063MNTXG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV3063MNTXG is usually 5 days.
3.What payment methods are accepted for NCV3063MNTXG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV3063MNTXG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV3063MNTXG?
NCV3063MNTXG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV3063MNTXG 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 NCV3063MNTXG?
For technical support, including NCV3063MNTXG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV3063MNTXG requirements.
6.How does Aetrix verify that NCV3063MNTXG is sourced from the original manufacturer or authorized distributors?
All NCV3063MNTXG 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 NCV3063MNTXG meets industry standards.
7.What is the process for return or replacement of NCV3063MNTXG?
All NCV3063MNTXG units undergo pre-shipment inspection (PSI). If there is an issue with NCV3063MNTXG, 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 NCV3063MNTXG part is unused and in its original packaging.
Return procedure for NCV3063MNTXG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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