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onsemi NCV91300MNWBTXG
- Part No.:
- NCV91300MNWBTXG
- Manufacturer:
- onsemi
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
NCV91300MNWBTXG.pdf
- Description:
- IC REG BUCK PROG 3A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,187
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Product details
Overview
NCV91300MNWBTXG from onsemi is a synchronous PWM step-down DC-DC converter optimized for automotive post-regulation systems, delivering up to 3.0 A at a factory-configured output voltage of 1.1 V. It operates from 1.9 V to 5.5 V input, supports I²C-based dynamic voltage scaling, and integrates high-side/low-side MOSFETs in a 3.0 × 3.0 mm QFNW-16 package for space-constrained ADAS camera power rails.
For engineers reviewing the NCV91300MNWBTXG datasheet, pinout, applications, or equivalent options, this page provides verified technical context, validated pin functions, confirmed automotive-grade thermal and EMI performance, and real-world selection guidance for point-of-load designs requiring stable 1.1 V supply with programmable fault response.
Technical Context
The NCV91300MNWBTXG implements voltage-mode control with integrated high-side (RONHS = 62 mΩ typ) and low-side (RONLS = 65 mΩ typ) NMOS switches, enabling full synchronous rectification without external components. Its internal oscillator supports up to 2.15 MHz switching, with optional spread spectrum or external SYNC input for EMI reduction.
Operation includes automatic PFM–PWM mode transition for efficiency optimization across load range, I²C-configurable peak current limits (IPEAK[1..0] = 10 sets 4.0 A), and three-tier thermal protection (pre-warning at 132°C, warning at 154°C, shutdown at 168°C). Output voltage is factory-set to 1.1 V with ±2% DC error over load and line conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.1 V (factory-programmed); ±2% DC accuracy over full load, line, and temperature range ensures stable core supply for automotive SoCs. |
| Max Output Current | 3.0 A continuous at TA = 105°C (RJA = 40°C/W); enables single-rail powering of image signal processors in front/rear-view cameras. |
| Input Voltage Range | 1.9 V to 5.5 V (PVIN); supports direct connection to automotive 3.3 V or 5 V domains without pre-regulation. |
| Switching Frequency | Up to 2.15 MHz; allows use of compact 1.0 µH inductors and low-profile 20 µF output capacitors for minimal PCB footprint. |
| I²C Interface | Standard-mode (up to 3.4 MHz) with interrupt (INTB) and Power Good (PG); enables real-time DVS, fault reporting, and register-level configuration in telematics clusters. |
| Quiescent Current | 65 µA in PFM mode; sustains ultra-low standby power for always-on ADAS subsystems without compromising wake-up responsiveness. |
| Thermal Shutdown | 168°C with 24°C hysteresis; prevents irreversible damage during sustained overload or poor heatsinking in sealed enclosures. |
Pinout & Package
Housed in a 3.0 × 3.0 mm, 0.5 mm pitch QFNW-16 package (Case 484AL) with exposed thermal pad soldered to system ground for optimal power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN (Pins 1, 16) | Power Input | High-current input node; requires local 10 µF ceramic decoupling and short, wide traces to minimize voltage ripple and switching noise. |
| SW (Pins 2, 3) | Switch Node | Drives external 1.0 µH inductor; connects to BOOT capacitor (10 nF) and carries high di/dt; must be routed with minimal loop area. |
| PGND (Pins 4, 5) | Power Ground | High-switching-current return path; requires dedicated local ground plane separate from AGND, joined at single point. |
| AVIN (Pin 13) | Analog Supply | Digital/analog core supply (3.0–5.5 V); decoupled by 4.7 µF capacitor; powers I²C interface and internal regulators. |
| AGND (Pin 14) | Analog Ground | Reference for FB, AVIN, and internal circuitry; tied to system ground but isolated from PGND except at one star point. |
| FB (Pin 8) | Feedback Input | Connects directly to output capacitor positive terminal (not plane); senses regulated 1.1 V output for closed-loop control. |
| BOOT (Pin 15) | Bootstrap Supply | Charged via internal diode from SW; supplies gate drive for high-side MOSFET; requires 10 nF capacitor to SW. |
| EN (Pin 7) | Enable Control | Active-high logic input with internal pull-down; controls startup timing (tSTART = 110 µs typical to 90% VOUT). |
| PG (Pin 9) | Power Good | Open-drain output asserting when VOUT is within ±4% of 1.1 V; used for sequencing and system monitoring. |
| INTB (Pin 6) | Interrupt Output | Open-drain fault indicator (e.g., thermal warning, short-circuit, UVLO); pulled low on event, requires external pull-up. |
| SCL/SDA (Pins 10, 11) | I²C Interface | Bi-directional data/clock lines with internal pull-downs; support dynamic voltage scaling and real-time status readback. |
| SYNC (Pin 12) | External Clock Sync | Accepts 1.9–2.4 MHz external clock to synchronize switching and reduce beat-frequency EMI in multi-rail systems. |
Key Features
| Feature | Design Value |
|---|---|
| Automated PFM–PWM Transition | Enables >85% efficiency at 10 mA load while maintaining tight regulation at 3.0 A - critical for camera modules with burst-mode imaging. |
| I²C-Controlled Dynamic Voltage Scaling | Allows runtime adjustment of output voltage (in 5/10/20 mV steps) to match processor DVFS states without hardware change. |
| Configurable Peak Current Limit | IPEAK[1..0] = 10 sets 4.0 A limit, protecting 1.0 µH inductor and PCB traces during transient overloads in radar subsystems. |
| Active Output Discharge | Internally discharges VOUT to <100 mV within 10 ms when disabled - prevents back-powering of downstream logic in safety-critical shutdowns. |
| Triple Thermal Protection Levels | Pre-warning (132°C), warning (154°C), and shutdown (168°C) thresholds enable graduated system response before thermal failure. |
Applications
| Automotive Front Camera Power | ADAS Radar Module Supply |
|---|---|
|
Use Scenario: Powers CMOS image sensor and ISP in forward-facing ADAS camera with strict EMI and thermal constraints. IC Role / Device Role / Timing Role: Primary 1.1 V point-of-load regulator delivering 2.5 A peak current with <40 µs transient recovery. Use Value: 2.15 MHz switching avoids AM band interference; spread spectrum reduces radiated emissions below CISPR 25 Class 5 limits. |
Use Scenario: Supplies RF transceiver and baseband processor in 77 GHz radar ECU requiring clean, stable 1.1 V under engine vibration. IC Role / Device Role / Timing Role: Synchronous buck converter with I²C-monitored health status and thermal derating for functional safety compliance. Use Value: Integrated thermal warning (154°C) triggers host MCU to throttle processing before shutdown - maintains ASIL-B diagnostic coverage. |
| Rear-View Camera Core Rail | Instrument Cluster Display Logic |
|
Use Scenario: Provides 1.1 V core voltage to video processor in parking camera module operating from 12 V battery via 3.3 V intermediate rail. IC Role / Device Role / Timing Role: Automotive-qualified DC-DC with AEC-Q100 Grade 1 rating and -40°C to +150°C junction operation. Use Value: 65 µA quiescent current extends battery life in key-off scenarios; PG signal enables precise power sequencing with display driver IC. |
Use Scenario: Powers microcontroller and graphics accelerator in digital instrument cluster where layout space is constrained by TFT backlight drivers. IC Role / Device Role / Timing Role: Compact 3.0 × 3.0 mm regulator with exposed thermal pad enabling conduction cooling through metal chassis. Use Value: QFNW-16 package with 0.5 mm pitch allows routing under BGA packages; eliminates need for external MOSFETs or compensation network. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4420AGL-A-Z | Fixed 1.1 V output, 2 A max, no I²C interface, 500 kHz fixed frequency, no spread spectrum. | Lacks dynamic voltage scaling and EMI optimization features; suitable only for static-voltage, non-safety-critical loads. | Select only if I²C control and thermal warning are unnecessary and board space permits larger inductor. |
| TPS62903RQYR | Adjustable 0.4–5.5 V output, 3 A, I²C interface, 1.8–4.0 MHz programmable frequency, no thermal warning pins. | Requires external resistor divider for 1.1 V; lacks dedicated INTB pin for fault prioritization in ASIL-B systems. | Choose when output flexibility outweighs automotive thermal diagnostics; verify AEC-Q100 qualification separately. |
Compared with MPQ4420AGL-A-Z and TPS62903RQYR, the NCV91300MNWBTXG delivers automotive-specific advantages: factory-trimmed 1.1 V accuracy, integrated thermal warning signaling, and spread spectrum for certified EMI compliance - making it uniquely suited for camera and radar point-of-load designs requiring functional safety alignment.
Availability
NCV91300MNWBTXG is available at Aetrix Electronics and suitable for automotive ADAS camera modules, radar ECUs, and instrument cluster displays requiring stable component supply with AEC-Q100 qualification, long-term lifecycle assurance, and traceable sourcing.
Supply support for NCV91300MNWBTXG 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, with leadership in power management and sensing technologies.
The NCV91300 series is part of onsemi's automotive power management portfolio, designed specifically for ASIL-compliant point-of-load regulation in ADAS, infotainment, and body electronics - emphasizing thermal robustness, EMI resilience, and functional safety readiness.
FAQ
What is the factory-configured output voltage of the NCV91300MNWBTXG?
The NCV91300MNWBTXG is factory-programmed to deliver a fixed 1.1 V output voltage, as indicated by the "W3" variant code in its ordering information. This value is trimmed during production to ±2% accuracy across temperature and load, eliminating the need for external feedback resistors and ensuring consistent performance in automotive camera and radar applications.
Does the NCV91300MNWBTXG support I²C communication for dynamic voltage scaling?
Yes, the NCV91300MNWBTXG includes a standard-mode I²C interface (SCL/SDA pins) that enables full register access for dynamic voltage scaling, peak current limit configuration, spread spectrum control, and real-time fault status monitoring. The I²C bus operates up to 3.4 MHz and supports interrupt-driven diagnostics via the INTB pin.
What thermal protection features does the NCV91300MNWBTXG provide?
The NCV91300MNWBTXG implements three-tier thermal protection: pre-warning at 132°C, warning at 154°C, and shutdown at 168°C (typical), each with defined hysteresis. These thresholds are monitored internally and reported via the INTB pin, allowing host systems to initiate thermal throttling or safe shutdown before irreversible damage occurs.
Can the NCV91300MNWBTXG operate without an external inductor?
No - the NCV91300MNWBTXG requires an external 1.0 µH power inductor connected between the SW pins and output capacitor. It integrates both high-side and low-side MOSFETs, bootstrap circuitry, and compensation, but the inductor is essential for energy storage and current regulation in the buck topology.
Is the NCV91300MNWBTXG qualified for automotive applications?
Yes, the NCV91300MNWBTXG is AEC-Q100 qualified (Grade 1: −40°C to +125°C ambient), manufactured in IATF 16949-certified facilities, and designed for automotive power rails including ADAS cameras, radar modules, and instrument clusters. Its thermal shutdown, UVLO, OVP, and fault signaling meet functional safety requirements for ASIL-B systems.
NCV91300MNWBTXG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.9V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 3.3V
- Current - Output:
- 3A
- Frequency - Switching:
- Up to 2.15MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
NCV91300MNWBTXG FAQ
1.How can I place an order for NCV91300MNWBTXG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV91300MNWBTXG 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 NCV91300MNWBTXG reliable?
The price and inventory of NCV91300MNWBTXG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV91300MNWBTXG is usually 5 days.
3.What payment methods are accepted for NCV91300MNWBTXG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV91300MNWBTXG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV91300MNWBTXG?
NCV91300MNWBTXG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV91300MNWBTXG 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 NCV91300MNWBTXG?
For technical support, including NCV91300MNWBTXG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV91300MNWBTXG requirements.
6.How does Aetrix verify that NCV91300MNWBTXG is sourced from the original manufacturer or authorized distributors?
All NCV91300MNWBTXG 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 NCV91300MNWBTXG meets industry standards.
7.What is the process for return or replacement of NCV91300MNWBTXG?
All NCV91300MNWBTXG units undergo pre-shipment inspection (PSI). If there is an issue with NCV91300MNWBTXG, 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 NCV91300MNWBTXG part is unused and in its original packaging.
Return procedure for NCV91300MNWBTXG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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