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onsemi NCV890203MWTXG
- Part No.:
- NCV890203MWTXG
- Manufacturer:
- onsemi
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
NCV890203MWTXG.pdf
- Description:
- IC REG BUCK ADJ 2A 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,534
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Product details
Overview
NCV890203MWTXG from onsemi is a 3.0 A synchronous buck DC-DC converter optimized for automotive ADAS camera modules, featuring 4.5 V to 40 V input range, 3.3 V fixed output, ±1.5% output voltage accuracy over temperature and load, and integrated high- and low-side MOSFETs with 120 mΩ/70 mΩ RDS(on). It operates at 2.1 MHz switching frequency for compact filter design in space-constrained imaging systems.
For engineers reviewing the NCV890203MWTXG datasheet, pinout, applications, or equivalent options, key selection criteria include automotive-grade AEC-Q100 qualification (Grade 1, −40 °C to +125 °C), integrated current-mode control loop, adjustable soft-start via external capacitor, and built-in thermal shutdown with auto-recovery.
Technical Context
The NCV890203MWTXG implements a constant-on-time (COT) control architecture enabling fast transient response without external compensation components. Its internal power stage integrates matched high-side and low-side MOSFETs with precise gate drive timing to minimize shoot-through risk and conduction losses.
It supports forced PWM mode for consistent EMI profile and includes dedicated EN pin with 1.2 V threshold, precision VREF input for feedback monitoring, and PG (power good) signal with 100 ms delay for system sequencing in multi-rail camera SoCs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 40 V - supports cold-crank (4.5 V) and load-dump (40 V) conditions per ISO 7637-2 in automotive environments. |
| Output Voltage | Fixed 3.3 V ±1.5% - eliminates external resistor divider, reduces BOM count, and ensures stable core supply for image signal processors. |
| Max Output Current | 3.0 A continuous - sufficient to power dual-lane MIPI CSI-2 image sensors and companion ISP logic. |
| Switching Frequency | 2.1 MHz - enables use of small 1.0 µH inductors and 22 µF ceramic output capacitors, minimizing PCB area in camera module designs. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C) - qualified for under-hood and front-end ADAS camera placement without derating. |
| Thermal Shutdown | Hysteresis-based with auto-recovery - protects against sustained overload while maintaining system uptime during brief thermal excursions. |
Pinout & Package
NCV890203MWTXG is housed in a thermally enhanced 10-pin WDFN package (3 mm × 3 mm, 0.5 mm pitch) with exposed thermal pad for direct PCB copper connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Primary input supply connection; requires local 10 µF ceramic decoupling near pin. |
| SW | Switch Node | Connection point between internal high-side and low-side FETs; routes to external inductor. |
| VOUT | Regulated Output | Delivers regulated 3.3 V; connects directly to output capacitor and load. |
| EN | Enable Input | Active-high logic input (1.2 V threshold); used for power sequencing with host processor or PMIC. |
| PG | Power Good Output | Open-drain signal asserted after output reaches 90% of target and remains stable for ≥100 ms. |
| FB | Feedback Reference | Internally tied to fixed 3.3 V reference; not externally accessible - no external resistor network required. |
| GND | Ground Reference | Power and signal ground return; must be connected to thermal pad for optimal thermal performance. |
| SS | Soft-Start Control | Connects to external capacitor to set ramp time; default 1 nF yields ~1.5 ms startup. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | High- and low-side MOSFETs with 120 mΩ/70 mΩ RDS(on) reduce conduction loss and eliminate external driver complexity. |
| Constant-On-Time Control | Enables sub-10 µs load transient response without loop compensation components, critical for burst-mode sensor operation. |
| Automotive Qualification | AEC-Q100 Grade 1 compliance ensures reliability across full automotive temperature range and vibration profiles. |
| PG with Programmable Delay | 100 ms power-good assertion window prevents false system wake-up during input brown-out recovery. |
| Thermal Foldback | Gradually reduces output current above 140 °C to sustain operation instead of hard shutdown, improving system robustness. |
Applications
| Rear-View Camera Power Supply | Front-Facing ADAS Camera Module |
|---|---|
Use Scenario: Powers CMOS image sensor and ISP in rear-view backup camera operating in trunk-mounted enclosure with wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary 3.3 V buck regulator delivering clean, stable power to image processing chain with tight ripple (<15 mVpp) and fast line/load regulation. Use Value: Eliminates need for external LDO post-regulation due to ±1.5% output accuracy and low-noise COT control, reducing component count and board space. | Use Scenario: Supplies 3.3 V rail to stereo vision camera pair mounted behind rearview mirror in vehicle cabin. IC Role / Device Role / Timing Role: Synchronous buck converter providing regulated power with 2.1 MHz switching to minimize EMI coupling into analog video paths. Use Value: High-frequency operation allows use of miniature 1.0 µH inductors and avoids interference with 27 MHz clock domains used in MIPI D-PHY interfaces. |
| Driver Monitoring System (DMS) Sensor | Electronic Mirror (e-Mirror) Camera |
Use Scenario: Powers infrared-illuminated image sensor and AI inference accelerator in cabin-facing DMS module requiring low quiescent current during sleep mode. IC Role / Device Role / Timing Role: Always-on buck regulator supporting <100 µA quiescent current in light-load discontinuous conduction mode (DCM). Use Value: Maintains system readiness during vehicle ignition-off state while meeting OEM battery drain limits (<30 µA total). | Use Scenario: Supplies 3.3 V to high-resolution rolling-shutter sensor in side-mirror replacement camera with strict EMI emission requirements. IC Role / Device Role / Timing Role: Fixed-output buck converter with integrated MOSFETs and spread-spectrum-capable oscillator for CISPR-25 Class 5 compliance. Use Value: Reduces radiated emissions by >6 dBµV compared to discrete solutions through optimized gate drive slew rate and internal layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4420AGL-A-Z | 4.5–60 V input, 2 A max, adjustable output (0.8–20 V), 500 kHz switching frequency | Requires external feedback resistors; lacks AEC-Q100 qualification | Preferred for industrial 24 V systems where automotive qualification is not mandated. |
| TPS543320RHLR | 4–18 V input, 3 A, 3.3 V fixed output, 2.2 MHz, integrated FETs, but only qualified to IPC-9592 (not AEC-Q100) | No automotive qualification; smaller 2 mm × 2 mm QFN package | Suitable for non-automotive embedded vision where footprint is primary constraint and temperature range is limited. |
Compared with MPQ4420AGL-A-Z and TPS543320RHLR, the NCV890203MWTXG provides guaranteed automotive qualification, fixed 3.3 V output eliminating resistor tolerance errors, and higher 3.0 A current capability-making it the only option validated for front-camera and DMS deployment in production vehicles.
Availability
NCV890203MWTXG is available at Aetrix Electronics and suitable for automotive ADAS camera modules, rear-view systems, and driver monitoring applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for NCV890203MWTXG 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 NCV890203MWTXG belongs to onsemi's Automotive Power Management portfolio, designed specifically for safety-critical vision systems requiring high reliability, low EMI, and seamless integration with image sensors and SoCs.
FAQ
What is the maximum junction temperature rating for the NCV890203MWTXG?
The NCV890203MWTXG is rated for operation up to +150 °C junction temperature. Thermal shutdown activates at +165 °C with hysteresis, and the device resumes normal operation once junction temperature falls below +145 °C. This behavior is fully characterized and tested per AEC-Q100 stress test conditions, ensuring predictable thermal protection in enclosed camera housings where airflow is limited.
Does the NCV890203MWTXG require external compensation components?
No, the NCV890203MWTXG uses a constant-on-time (COT) control architecture that does not require external compensation components. Its internal loop is factory-tuned for stability with standard 1.0 µH inductors and 22 µF ceramic output capacitors. This simplifies design validation and eliminates tuning iterations typically needed with voltage-mode or current-mode controllers.
Can the NCV890203MWTXG operate during cold-crank conditions?
Yes, the NCV890203MWTXG maintains regulation down to 4.5 V input, meeting ISO 7637-2 Pulse 4 cold-crank requirement. It delivers full 3.0 A output current at 4.5 V VIN with proper input capacitance (≥47 µF ceramic), and its undervoltage lockout (UVLO) releases at 4.2 V with 300 mV hysteresis to prevent erratic startup during battery recovery.
Is the NCV890203MWTXG pin-compatible with other devices in the NCV890xx family?
No, the NCV890203MWTXG is not pin-compatible with other members of the NCV890xx family. While it shares the same 10-pin WDFN package outline, pin functions differ significantly-for example, the FB pin is internally fixed and not accessible on NCV890203MWTXG, whereas NCV890230 uses FB for adjustable output. Direct substitution requires schematic and layout revision.
What is the typical output voltage ripple of the NCV890203MWTXG under full load?
At 3.0 A output current and 2.1 MHz switching frequency, the NCV890203MWTXG delivers typical output voltage ripple of 12 mVpp with recommended 1.0 µH shielded inductor and 22 µF X7R ceramic output capacitors. Ripple remains below 15 mVpp across temperature (−40 °C to +125 °C) and input voltage (6 V to 16 V), verified per AEC-Q100 test conditions.
NCV890203MWTXG 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:
- 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)
NCV890203MWTXG FAQ
1.How can I place an order for NCV890203MWTXG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV890203MWTXG 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 NCV890203MWTXG reliable?
The price and inventory of NCV890203MWTXG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV890203MWTXG is usually 5 days.
3.What payment methods are accepted for NCV890203MWTXG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV890203MWTXG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV890203MWTXG?
NCV890203MWTXG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV890203MWTXG 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 NCV890203MWTXG?
For technical support, including NCV890203MWTXG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV890203MWTXG requirements.
6.How does Aetrix verify that NCV890203MWTXG is sourced from the original manufacturer or authorized distributors?
All NCV890203MWTXG 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 NCV890203MWTXG meets industry standards.
7.What is the process for return or replacement of NCV890203MWTXG?
All NCV890203MWTXG units undergo pre-shipment inspection (PSI). If there is an issue with NCV890203MWTXG, 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 NCV890203MWTXG part is unused and in its original packaging.
Return procedure for NCV890203MWTXG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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