My Inquiry
My Account
onsemi NCV3063DR2G
- Part No.:
- NCV3063DR2G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
NCV3063DR2G.pdf
- Description:
- IC REG BUCK BOOST ADJ 1.5A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,218
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCV3063DR2G 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 cost-sensitive power conversion for vehicle infotainment, body control modules, and LED lighting drivers.
For engineers reviewing the NCV3063DR2G datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, SOIC-8 package details, real-world efficiency data (≥73% buck at 3.3 V/800 mA), thermal performance limits (−40°C to +125°C junction), and validated alternative options for automotive DC-DC design.
Technical Context
The NCV3063DR2G implements a hysteretic gated-oscillator architecture that regulates output voltage without external loop compensation. Its oscillator frequency (110–190 kHz) is set by an external timing capacitor (CT) and internally sourced with a 1:6 charge/discharge current ratio, enabling stable operation across wide input ranges.
It integrates a precision 1.25 V comparator reference (±2% over −40°C to +125°C), peak-current sensing via a 200 mV threshold on Pin 7 (Ipk Sense), and a Darlington output switch rated for 40 V VSWCE and 1.5 A continuous current - all optimized for robustness in automotive transients and load dump conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 40 V - supports direct connection to 12 V/24 V automotive batteries including cold-crank (≥3 V) and load-dump (≤40 V) events. |
| Switch Current Rating | 1.5 A - enables up to ~800 mA output in buck configuration (e.g., 3.3 V @ 800 mA) with margin for transient loads. |
| Oscillator Frequency | 150 kHz typical (110–190 kHz range) - balances EMI control and component size; CT = 2.2 nF yields nominal frequency. |
| Reference Voltage | 1.25 V ±2% over −40°C to +125°C - ensures accurate output regulation across full automotive temperature range. |
| Current Limit Threshold | 200 mV ±35 mV on Ipk Sense pin - sets peak switch current limit via external sense resistor (e.g., 0.15 Ω → 1.33 A trip point). |
| Thermal Shutdown | 160°C activation with 10°C hysteresis - protects against sustained overload or poor heatsinking without latch-up. |
| Junction Temp Range | −40°C to +125°C - qualified per AEC-Q100 for under-hood and cabin-mounted automotive applications. |
Pinout & Package
NCV3063DR2G is housed in a Pb-free SOIC-8 NB (Case 751-07) package with exposed pad tied to GND (Pin 4) for enhanced thermal dissipation. Thermal resistance is RJA = 180°C/W (still air) and RJC = 45°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SWC) | Switch Collector | Collector of internal Darlington transistor - connects to inductor (buck/boost) or diode (inverting); handles full switch current and 40 V max. |
| 2 (SWE) | Switch Emitter | Emiter of internal Darlington - ties to GND (buck), input (boost), or output (inverting); voltage swing impacts gate drive when used with external FETs. |
| 3 (TCAP) | Timing Capacitor | Oscillator timing node - charges/discharges with internal 1:6 current source/sink; voltage limited to −0.2 V to +1.4 V. |
| 4 (GND) | Ground | Common reference for all internal circuits and exposed pad - must be low-impedance plane for stability and thermal performance. |
| 5 (COMP) | Comparator Inverting Input | Feedback node for output voltage regulation - connected to resistor divider from VOUT; 1.25 V reference sets regulation point. |
| 6 (VCC) | Voltage Supply | Power input for IC core - accepts 3–40 V; supplies internal bias, oscillator, and driver; bypass with ≥0.1 µF ceramic. |
| 7 (IPK) | Ipk Sense | Peak current monitor input - senses voltage drop across external sense resistor (RSC) to trigger cycle-by-cycle current limiting at ~200 mV. |
| 8 (N.C.) | No Connect | Internally unconnected - must remain floating; no routing or soldering required. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | NCV prefix indicates AEC-Q100 compliance, controlled change management, and extended −40°C to +125°C operating range. |
| Cycle-by-cycle current limiting | Prevents switch failure during short-circuit or overload by terminating each conduction cycle when IPK exceeds threshold - no external protection needed. |
| Internal thermal shutdown with hysteresis | Shuts down at 160°C and re-enables only after cooling to ≤150°C - avoids thermal oscillation and enables safe recovery after fault clearance. |
| Adjustable output voltage | Regulation set by external resistor divider on COMP pin - supports any output from ~1.25 V to >40 V (with topology constraints). |
| Low standby current | ICC ≤ 7 mA across full input range - minimizes quiescent drain in always-on vehicle systems (e.g., CAN wake-up circuits). |
Applications
| Automotive LED Headlamp Driver | Body Control Module (BCM) Power Supply |
|---|---|
Use Scenario: Driving high-brightness white LEDs (3–4 V per string, 350–700 mA) from 12 V battery with dimming capability and fault tolerance. IC Role / Device Role / Timing Role: Configured as constant-current boost regulator; COMP pin feedback derived from LED current-sense resistor; TCAP sets 150 kHz switching for compact magnetics. Use Value: Achieves >85% efficiency at 24 V/350 mA (per Figure 19), withstands 40 V load dump, and provides cycle-by-cycle current limiting to prevent LED overcurrent during thermal runaway. | Use Scenario: Generating stable 5 V or 3.3 V rail for microcontrollers, CAN transceivers, and sensors in door modules or seat controllers. IC Role / Device Role / Timing Role: Used in buck configuration with external Schottky diode and 47 µH inductor; regulated via 2.4 kΩ/3.9 kΩ divider on COMP pin. Use Value: Delivers 3.3 V/800 mA with ≤9 mV load regulation (Figure 16), −40°C to +125°C operation, and integrated thermal shutdown eliminates need for discrete thermal protection. |
| In-Vehicle Infotainment (IVI) Display Backlight | 12 V to −12 V Inverting Supply |
Use Scenario: Powering CCFL or LED backlight for center-stack displays requiring adjustable brightness and EMI-controlled switching. IC Role / Device Role / Timing Role: Operated in boost mode with external NMOS (e.g., NTD18N06) driven by SWE pin; TCAP + pulse feedback (R6) raises frequency to 220 kHz for lower ripple. Use Value: Enables >85% efficiency (Figure 26), sharp gate edges (<100 ns) via BC846BPD driver, and programmable dimming via analog voltage on COMP pin. | Use Scenario: Generating isolated negative rail for op-amps, ADC references, or RS-232 transceivers in telematics units. IC Role / Device Role / Timing Role: Configured as voltage-inverting converter (Figure 22); SWC connects to inductor, SWE to GND, and output taken from diode cathode. Use Value: Provides −12 V/100 mA with 49.8% efficiency and <300 mVpp ripple (Figure 24); 200 mV current limit prevents damage during output short. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2574MX-5.0/NOPB | Fixed 5 V output, 0.5 A switch, 52 kHz frequency, no internal current sense - requires external current-limiting circuitry. | Limited to fixed-output buck only; unsuitable for boost/inverting or >500 mA loads. | Select only for simple 5 V buck where low BOM count outweighs flexibility and current capability. |
| MP1584EN-LF-Z | 1.5 A synchronous buck-only controller, 1.5 MHz switching, integrated high-side/low-side MOSFETs, no Darlington switch. | Higher efficiency (>90%) but only supports buck; lacks inverting/boost capability and automotive temp range (−20°C to +85°C). | Choose for high-frequency, high-efficiency buck rails in non-automotive industrial designs where topology flexibility is not required. |
Compared with LM2574MX-5.0/NOPB and MP1584EN-LF-Z, the NCV3063DR2G uniquely combines automotive qualification, three-converter topology support (buck/boost/inverting), and integrated 1.5 A Darlington switch - making it the only option for cost-sensitive, multi-rail automotive power designs needing single-chip versatility and ruggedness.
Availability
NCV3063DR2G is available at Aetrix Electronics and suitable for automotive body electronics, infotainment power supplies, and LED lighting drivers requiring stable component supply across extended temperature and long production lifecycles.
Supply support for NCV3063DR2G 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 focused on energy-efficient electronics for automotive, industrial, cloud, and IoT applications.
The NCV3063 series belongs to onsemi's automotive power management portfolio, designed specifically for robust, low-cost DC-DC conversion in harsh environments - emphasizing AEC-Q100 compliance, wide input range, and topology flexibility without external compensation.
FAQ
What is the maximum output current achievable with NCV3063DR2G in a buck configuration?
The NCV3063DR2G supports up to 1.5 A peak switch current. In a standard buck configuration (e.g., Figure 16), practical continuous output current is ~800 mA at 3.3 V due to thermal limits and efficiency trade-offs. Higher currents require external MOSFETs (e.g., NTD18N06 in Figure 25) or careful thermal design with the SOIC-8 exposed pad tied to a large GND plane.
Does NCV3063DR2G support boost and inverting topologies out of the box?
Yes - the NCV3063DR2G is explicitly designed for step-up (boost), step-down (buck), and voltage-inverting applications with minimal external components. Figures 16–24 in the datasheet provide validated schematics, bill-of-materials, and test data for all three configurations, confirming full functional support without firmware or additional ICs.
How does the thermal shutdown feature work in NCV3063DR2G?
The NCV3063DR2G activates thermal shutdown at 160°C junction temperature and remains off until the die cools to ≤150°C, providing 10°C hysteresis. This prevents thermal oscillation and allows safe recovery after overload or poor heatsinking. It is not a substitute for proper PCB layout - the exposed pad must be soldered to a thermal pad connected to GND for effective heat transfer.
Can NCV3063DR2G be used with external MOSFETs to increase output current?
Yes - Figures 25–29 show validated designs using external NMOS (boost), PMOS (buck), and PNP (buck) transistors driven by the NCV3063DR2G's SWE pin. This extends output current beyond 1.5 A, improves efficiency (up to 85%), and enables higher switching frequencies (up to 250 kHz), while retaining the IC's regulation and protection features.
What is the purpose of the N.C. pin (Pin 8) on NCV3063DR2G?
Pin 8 is a true no-connect terminal - internally unconnected and electrically isolated. It must remain floating with no trace, solder, or component attached. Routing or grounding Pin 8 may cause unpredictable behavior or damage, as confirmed in the "PIN DESCRIPTION" section (page 3) of the official datasheet.
NCV3063DR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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-SOIC
NCV3063DR2G FAQ
1.How can I place an order for NCV3063DR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV3063DR2G 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 NCV3063DR2G reliable?
The price and inventory of NCV3063DR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV3063DR2G is usually 5 days.
3.What payment methods are accepted for NCV3063DR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV3063DR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV3063DR2G?
NCV3063DR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV3063DR2G 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 NCV3063DR2G?
For technical support, including NCV3063DR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV3063DR2G requirements.
6.How does Aetrix verify that NCV3063DR2G is sourced from the original manufacturer or authorized distributors?
All NCV3063DR2G 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 NCV3063DR2G meets industry standards.
7.What is the process for return or replacement of NCV3063DR2G?
All NCV3063DR2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV3063DR2G, 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 NCV3063DR2G part is unused and in its original packaging.
Return procedure for NCV3063DR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCV3063DR2G Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
