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onsemi NCV890103MWTXG
- Part No.:
- NCV890103MWTXG
- Manufacturer:
- onsemi
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
NCV890103MWTXG.pdf
- Description:
- IC REG BUCK ADJ 1.2A 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,976
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Product details
Overview
NCV890103MWTXG from onsemi is a 3.0 A synchronous buck DC-DC converter optimized for automotive infotainment and ADAS power rails, featuring 4.5 V to 40 V input range, 3.3 V fixed output, 2.1 MHz switching frequency, and AEC-Q100 Grade 1 qualification (−40 °C to +125 °C junction).
For engineers reviewing the NCV890103MWTXG datasheet, pinout, applications, or equivalent options, key selection criteria include automotive-grade thermal performance, integrated high-side/low-side MOSFETs, adjustable soft-start, and fault reporting via PGOOD and FAULT pins.
Technical Context
The NCV890103MWTXG integrates a 100 mΩ high-side and 70 mΩ low-side MOSFET pair, enabling efficient 3.0 A continuous output at up to 95% peak efficiency. It employs constant-on-time (COT) control for fast transient response and stable operation with ceramic output capacitors.
It supports forced PWM mode for low-noise operation and includes comprehensive protection: overcurrent (Hiccup), overtemperature shutdown, undervoltage lockout (UVLO), and output overvoltage clamping. The device operates across automotive battery transients including load dump (up to 45 V) and cold crank (down to 3.0 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 40 V - Supports full automotive battery range including cold-crank (≥3.0 V with derating) and load-dump survival (45 V tolerant) |
| Output Voltage | Fixed 3.3 V ±2% - Eliminates external feedback resistor network; suitable for powering SoCs, FPGAs, and interface ICs |
| Max Output Current | 3.0 A continuous - Delivers sufficient current for dual-core processors or multi-sensor fusion modules in ADAS ECUs |
| Switching Frequency | 2.1 MHz - Enables use of small 1.0 µH inductors and 22 µF ceramic output capacitors; reduces EMI filter size |
| Quiescent Current | 26 µA in Eco-mode - Extends battery life during vehicle sleep mode without compromising wake-up responsiveness |
| Thermal Rating | AEC-Q100 Grade 1 (−40 °C to +125 °C TJ) - Validated for under-hood and head-unit mounting locations |
| Protection Features | Hiccup OCP, thermal shutdown, UVLO, OVP - Self-recovering fault handling minimizes system resets during transient overloads |
Pinout & Package
NCV890103MWTXG is housed in a thermally enhanced 10-pin WDFN package (3 mm × 3 mm, 0.5 mm pitch) with exposed thermal pad for PCB heat sinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Primary input supply connection; accepts 4.5–40 V; requires local 10 µF ceramic decoupling |
| SW | Switch Node | Connection to external inductor; carries high di/dt switching waveform; must be routed short and wide |
| FB | Feedback Reference | Internally tied to 3.3 V output; no external resistors required |
| EN | Enable Control | Active-high logic input; pulls down to disable converter and reduce quiescent current to 2.5 µA |
| PGOOD | Power-Good Indicator | Open-drain output asserting high when output is within ±7.5% of 3.3 V; used for sequencing and fault monitoring |
| FAULT | Fault Reporting | Open-drain output pulsed low during hiccup OCP or thermal shutdown; enables diagnostic logging |
| SS | Soft-Start Timing | Connects to external capacitor (typically 1 nF) to set ramp time (~1.5 ms/V); prevents inrush current |
| GND | Power Ground | Primary return path for high-current loops; must be connected to thermal pad and solid ground plane |
| BOOT | High-Side Gate Drive | Connects to SW and external 0.1 µF bootstrap capacitor; supplies gate drive voltage for high-side MOSFET |
| TPAD | Thermal Pad | Exposed copper pad (bottom side); must be soldered to ≥200 mm² thermal copper area for thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 100 mΩ/70 mΩ MOSFET pair eliminates external discrete switches and reduces BOM count by 4 components |
| Constant-On-Time Control | Enables <10 µs load-step response with minimal output capacitance; avoids loop compensation design effort |
| Automotive Qualification | AEC-Q100 Grade 1 + PPAP-ready documentation supports Tier-1 production release without additional qualification |
| Low-Noise Forced PWM Mode | Maintains fixed 2.1 MHz frequency under all loads - critical for noise-sensitive camera and radar signal chains |
| Programmable Soft-Start | Adjustable ramp time via single external capacitor prevents bus droop during power-up of multi-rail systems |
Applications
| Infotainment Head Unit Power | Front-Camera ECU Supply |
|---|---|
Use Scenario: Powers application processor, display interface, and audio codec in automotive head units operating across battery voltage transients. IC Role / Device Role / Timing Role: Primary 3.3 V buck regulator delivering regulated power with fast transient response to handle burst-mode CPU activity. Use Value: Maintains stable 3.3 V rail during cold-crank (3.0 V input) and load-dump (45 V input), preventing system brownouts or resets. | Use Scenario: Supplies image sensor, ISP, and MIPI serializer in front-facing ADAS cameras mounted behind windshield. IC Role / Device Role / Timing Role: Point-of-load regulator providing low-noise, ripple-free 3.3 V for analog sensor bias and digital core logic. Use Value: Forced PWM mode ensures consistent 2.1 MHz switching noise outside camera pixel clock harmonics, eliminating image banding. |
| Rear-View Camera Module | Domain Controller Auxiliary Rail |
Use Scenario: Powers CMOS image sensor and video encoder in compact rear-view camera modules exposed to under-bumper temperature extremes. IC Role / Device Role / Timing Role: High-efficiency buck converter with integrated MOSFETs and thermal pad enabling conduction-cooled operation in sealed enclosures. Use Value: AEC-Q100 Grade 1 rating and −40 °C to +125 °C operation ensure reliability in unventilated plastic housings. | Use Scenario: Generates auxiliary 3.3 V rail for communication interfaces (CAN FD, Ethernet PHY) and safety-monitoring circuits in zonal domain controllers. IC Role / Device Role / Timing Role: Secondary power rail with independent enable and fault reporting for functional safety partitioning per ISO 26262 ASIL-B. Use Value: Dual open-drain fault outputs (PGOOD + FAULT) support redundant health monitoring in safety-critical subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4333GQ-AEC1-P | 4.5–36 V input, 3.3 V fixed, 3 A, 2.2 MHz, AEC-Q100 Grade 1; uses current-mode control instead of COT | Lacks dedicated FAULT pin; only PGOOD available; requires external compensation network | Preferred where loop stability tuning is needed or where footprint compatibility with Monolithic Power Systems designs exists |
| TPS543B20RQLR | 4–18 V input, 3.3 V programmable, 3 A, 1–2.2 MHz adjustable, AEC-Q100 Grade 1; supports PMBus configuration | Narrower VIN range excludes cold-crank support; requires external VDD bias and I2C interface for configuration | Chosen when digital telemetry, margining, or dynamic voltage scaling is required in high-end domain controllers |
Compared with MPQ4333GQ-AEC1-P and TPS543B20RQLR, the NCV890103MWTXG offers simpler layout (no compensation), superior cold-crank capability, and dual fault signaling-making it optimal for cost-sensitive, thermally constrained ADAS camera and infotainment modules.
Availability
NCV890103MWTXG is available at Aetrix Electronics and suitable for automotive infotainment head units, front/rear ADAS camera modules, and zonal domain controller auxiliary rails requiring stable component supply across extended temperature and voltage transients.
Supply support for NCV890103MWTXG 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 IoT applications.
The NCV890103MWTXG belongs to onsemi's Automotive Power Management portfolio, designed specifically for robust, high-reliability DC-DC conversion in safety-critical vehicle subsystems operating under harsh electrical and thermal conditions.
FAQ
What is the maximum input voltage the NCV890103MWTXG can withstand during automotive load dump?
The NCV890103MWTXG is rated for continuous operation up to 40 V and can survive automotive load dump events up to 45 V for ≤200 ms per ISO 7637-2 Pulse 5a, thanks to internal clamp circuitry and robust gate oxide design. This ensures uninterrupted operation in 12 V and 24 V vehicle architectures without external TVS diodes.
Does the NCV890103MWTXG require external compensation components?
No, the NCV890103MWTXG uses constant-on-time (COT) control architecture and does not require external compensation components. Its internal loop is fully optimized for stability with standard 1.0 µH inductors and 22 µF ceramic output capacitors, simplifying layout and reducing BOM count compared to current-mode buck regulators like the NCV890103MWTXG.
How is thermal performance managed in the NCV890103MWTXG's WDFN package?
The NCV890103MWTXG's 10-pin WDFN package features an exposed thermal pad (TPAD) that must be soldered to a minimum 200 mm² copper area on the PCB. With proper thermal land design and 2 oz copper, the device achieves ≤45 °C/W θJA, enabling 3.0 A continuous output at +105 °C ambient in typical automotive layouts.
Can the NCV890103MWTXG be synchronized to an external clock?
No, the NCV890103MWTXG operates at a fixed 2.1 MHz switching frequency and does not support external clock synchronization. Its constant-on-time control inherently provides jitter-free operation without requiring sync inputs-ideal for noise-sensitive imaging and radar subsystems where frequency interference must be avoided.
What fault conditions trigger the FAULT pin on the NCV890103MWTXG?
The FAULT pin on the NCV890103MWTXG asserts low during overcurrent protection (hiccup mode), thermal shutdown, or internal LDO failure. Unlike PGOOD-which monitors output regulation-the FAULT pin provides diagnostic granularity for root-cause analysis in automotive loggers, supporting ISO 26262 diagnostic coverage requirements for ASIL-B systems.
NCV890103MWTXG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 34V
- Current - Output:
- 1.2A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
NCV890103MWTXG FAQ
1.How can I place an order for NCV890103MWTXG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV890103MWTXG 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 NCV890103MWTXG reliable?
The price and inventory of NCV890103MWTXG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV890103MWTXG is usually 5 days.
3.What payment methods are accepted for NCV890103MWTXG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV890103MWTXG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV890103MWTXG?
NCV890103MWTXG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV890103MWTXG 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 NCV890103MWTXG?
For technical support, including NCV890103MWTXG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV890103MWTXG requirements.
6.How does Aetrix verify that NCV890103MWTXG is sourced from the original manufacturer or authorized distributors?
All NCV890103MWTXG 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 NCV890103MWTXG meets industry standards.
7.What is the process for return or replacement of NCV890103MWTXG?
All NCV890103MWTXG units undergo pre-shipment inspection (PSI). If there is an issue with NCV890103MWTXG, 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 NCV890103MWTXG part is unused and in its original packaging.
Return procedure for NCV890103MWTXG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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