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onsemi NCV3064MNTXG
- Part No.:
- NCV3064MNTXG
- Manufacturer:
- onsemi
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
NCV3064MNTXG.pdf
- Description:
- IC REG BUCK BOOST ADJ 1.5A 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,636
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Product details
Overview
NCV3064MNTXG from onsemi is an automotive-grade monolithic switching regulator IC designed for step-down, step-up, and voltage-inverting DC-DC converter applications. It integrates a 1.5 A Darlington output switch, 150 kHz oscillator, precision 1.25 V reference (±1.5%), cycle-by-cycle current limiting, and logic-level ON/OFF shutdown. It operates from 3.0 V to 40 V input and supports high-power LED lighting and battery charger designs.
For engineers reviewing the NCV3064MNTXG datasheet, pinout, applications, or equivalent options, key selection criteria include its automotive temperature range (−40 °C to +125 °C), internal thermal shutdown (160 °C), 100 µA standby current, adjustable output voltage capability, and DFN-8 package with exposed thermal pad.
Technical Context
The NCV3064MNTXG implements a hysteretic gated-oscillator topology that regulates output voltage without requiring dominant-pole loop compensation. Its oscillator frequency (110–190 kHz) is set by an external timing capacitor (CT), and switching duty cycle is controlled via charge/discharge current ratio (5.5–6.5×). The internal Darlington switch enables high-current operation with low conduction loss.
Output regulation relies on a comparator comparing feedback voltage against a 1.25 V reference, while peak current protection uses a dedicated Ipk sense comparator monitoring voltage across an external Rsense resistor. Thermal shutdown activates at 160 °C with 10 °C hysteresis, and the ON/OFF pin provides TTL-compatible logic control with <1 µA off-state leakage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 40 V - supports wide-input industrial and automotive power rails without pre-regulation. |
| Switch Current Rating | 1.5 A continuous - enables direct drive of medium-power converters without external MOSFETs in many cases. |
| Oscillator Frequency | 110–190 kHz (typ. 150 kHz) - balances efficiency, EMI, and passive component size for cost-sensitive designs. |
| Reference Voltage | 1.25 V ±1.5% - ensures stable output voltage accuracy across temperature and line variations. |
| Standby Current | 100 µA max - enables ultra-low-power shutdown for battery-backed systems. |
| Current Limit Threshold | 200 mV (typ.) at Ipk pin - sets precise 1.5 A switch current limit using a simple Rsense resistor (e.g., 0.133 Ω). |
| Operating Junction Temp | −40 °C to +125 °C - qualified for under-hood automotive and harsh industrial environments. |
Pinout & Package
NCV3064MNTXG is housed in a thermally enhanced 4 mm × 4 mm DFN-8 package (Case 488AF) with exposed thermal pad (EP) that must be soldered to PCB ground for thermal performance. Pin 4 is GND and serves as the thermal and electrical reference for all internal circuits.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Switch Collector (SWC) | High-side Darlington collector output | Connects to inductor/diode node in buck/boost/inverting topologies; rated for 40 V and 1.5 A. |
| 2 - Switch Emitter (SWE) | High-side Darlington emitter output | Serves as return path for switch current; tied to input rail in buck configuration. |
| 3 - Timing Capacitor (CT) | Oscillator timing input | Controls switching frequency via external capacitor; sawtooth waveform generated internally. |
| 4 - GND | Ground reference and thermal pad connection | Must be connected to large copper pour; EP flag (exposed pad) is electrically and thermally tied to Pin 4. |
| 5 - Comparator Inverting Input (FB) | Feedback voltage input | Compares divided output voltage against 1.25 V reference to regulate output. |
| 6 - VCC | Power supply input | Supplies internal circuitry; accepts 3.0–40 V; bypass capacitor required near pin. |
| 7 - Ipk Sense | Peak current limit sense input | Monitors voltage drop across Rsense to terminate switch conduction cycle-by-cycle. |
| 8 - ON/OFF | Logic-level enable/disable control | Pull ≤0.8 V or float to disable (100 µA standby); pull ≥2.4 V to enable normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | NCV prefix indicates AEC-Q100 compliance and extended −40 °C to +125 °C operation for automotive use. |
| Integrated Darlington switch | Eliminates need for external high-current transistor in many 1.5 A applications, reducing BOM count and layout area. |
| Cycle-by-cycle current limiting | Prevents switch overcurrent during startup, short-circuit, or overload without latch-up or delayed response. |
| Thermal shutdown with hysteresis | Shuts down at 160 °C and re-enables at ~150 °C, preventing thermal runaway while avoiding oscillation near trip point. |
| Low-quiescent shutdown mode | Reduces system standby power to <100 µA, critical for always-on automotive modules and battery-powered devices. |
Applications
| Automotive Body Control Module (BCM) | Industrial 24 V Rail Converter |
|---|---|
Use Scenario: Powering microcontrollers, sensors, and CAN transceivers from a 12 V battery with load dump immunity. IC Role / Device Role / Timing Role: Step-down regulator generating stable 3.3 V or 5 V from variable 9–16 V automotive input. Use Value: Withstands 40 V transients, operates across full automotive temp range, and enables low-power sleep modes via ON/OFF pin. |
Use Scenario: Converting 24 V industrial supply to isolated or non-isolated 5 V/12 V for PLC I/O modules. IC Role / Device Role / Timing Role: Configured as buck or inverting regulator to generate auxiliary rails with minimal external components. Use Value: 1.5 A switch current supports >10 W output; DFN-8 package allows compact, thermally robust layout on dense control boards. |
| LED Driver for Commercial Lighting | USB-C PD Auxiliary Power Supply |
Use Scenario: Driving strings of white LEDs in streetlight or parking garage fixtures from 12–48 V DC input. IC Role / Device Role / Timing Role: Boost converter delivering constant current to LED string via external sense resistor and feedback loop. Use Value: Adjustable output voltage and current limit allow flexible LED string configuration; 150 kHz switching minimizes EMI filter size. |
Use Scenario: Generating 3.3 V or 5 V auxiliary bias rails for USB-C PD controller and level-shifters in portable chargers. IC Role / Device Role / Timing Role: Buck converter powered from primary PD output (e.g., 9 V or 15 V) to supply low-noise logic rails. Use Value: Low 100 µA shutdown current extends battery life; small DFN-8 footprint fits tight space constraints near PD IC. |
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, SOIC-8 only | Limited to fixed-output, lower current, and lower frequency - less suitable for high-efficiency or compact designs | Select when fixed 5 V output suffices and thermal budget allows larger inductors/caps due to lower frequency. |
| MP1584EN-LF-Z | 4 A switch, 1.5 MHz frequency, adjustable output, requires external bootstrap capacitor | Higher current and frequency enable smaller passives but demand more careful layout and gate drive design | Choose for higher power density or >1.5 A loads; verify compatibility with existing feedback network and thermal management. |
Compared with LM2574MX-5.0/NOPB, NCV3064MNTXG offers 3× higher switch current and programmable output, enabling flexible multi-rail designs; versus MP1584EN-LF-Z, it trades higher frequency for simpler layout and no bootstrap requirement, favoring cost-sensitive automotive applications.
Availability
NCV3064MNTXG is available at Aetrix Electronics and suitable for automotive body electronics, industrial power supplies, and LED lighting systems requiring stable component supply, AEC-Q100 compliance, and long-term manufacturability.
Supply support for NCV3064MNTXG 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 management, analog, sensor, and connectivity solutions for automotive, industrial, and cloud power markets.
The NCV3064MNTXG belongs to onsemi's automotive-qualified DC-DC converter family, engineered to replace legacy MC34063A in demanding environments where reliability, temperature resilience, and functional safety readiness are essential.
FAQ
What is the maximum input voltage rating for the NCV3064MNTXG?
The NCV3064MNTXG supports an absolute maximum input voltage of 42 V on the VCC pin and 42 V on the Switch Collector (Pin 1), making it suitable for 24 V and 36 V automotive and industrial systems with transient overvoltage tolerance. Operation above 40 V is not recommended for sustained use per datasheet limits.
Can the NCV3064MNTXG be used in a step-up (boost) configuration?
Yes, the NCV3064MNTXG is explicitly designed for step-up operation, as confirmed in its datasheet Figure 20 and Applications section. It supports boost topologies with typical output voltages up to 24 V at 0.6 A, achieving up to 86% efficiency at 200 mA load with 12 V input.
What is the purpose of the exposed thermal pad (EP) on the NCV3064MNTXG DFN-8 package?
The exposed thermal pad on the NCV3064MNTXG must be soldered to a PCB ground plane to provide a low-thermal-resistance path (RJC = 14 °C/W) from the die to ambient. Per datasheet Figure 3 and Package Outline 488AF, the EP is electrically connected to Pin 4 (GND) and is mandatory for meeting thermal specifications and preventing junction overheating.
How does the ON/OFF pin function in the NCV3064MNTXG?
The ON/OFF pin (Pin 8) enables logic-level shutdown: pulling it ≤0.8 V or leaving it floating disables switching and reduces quiescent current to ≤100 µA; pulling it ≥2.4 V enables normal operation. It is TTL-compatible and supports PWM dimming or system-level power sequencing without external level shifters.
Is the NCV3064MNTXG pin-compatible with the NCP3064 series?
Yes, the NCV3064MNTXG shares identical pinout, electrical characteristics, and functional behavior with the NCP3064 and NCP3064B variants in the same DFN-8 package. The NCV prefix denotes automotive qualification (−40 °C to +125 °C, AEC-Q100), while core functionality and pin mapping remain fully compatible.
NCV3064MNTXG 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
- 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)
NCV3064MNTXG FAQ
1.How can I place an order for NCV3064MNTXG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV3064MNTXG 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 NCV3064MNTXG reliable?
The price and inventory of NCV3064MNTXG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV3064MNTXG is usually 5 days.
3.What payment methods are accepted for NCV3064MNTXG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV3064MNTXG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV3064MNTXG?
NCV3064MNTXG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV3064MNTXG 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 NCV3064MNTXG?
For technical support, including NCV3064MNTXG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV3064MNTXG requirements.
6.How does Aetrix verify that NCV3064MNTXG is sourced from the original manufacturer or authorized distributors?
All NCV3064MNTXG 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 NCV3064MNTXG meets industry standards.
7.What is the process for return or replacement of NCV3064MNTXG?
All NCV3064MNTXG units undergo pre-shipment inspection (PSI). If there is an issue with NCV3064MNTXG, 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 NCV3064MNTXG part is unused and in its original packaging.
Return procedure for NCV3064MNTXG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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