My Inquiry
My Account
onsemi NCV890131MWTXG
- Part No.:
- NCV890131MWTXG
- Manufacturer:
- onsemi
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
NCV890131MWTXG.pdf
- Description:
- IC REG BUCK ADJ 1.2A 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,083
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCV890131MWTXG 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 voltage, ±2% output accuracy over load/temperature, and integrated high- and low-side MOSFETs. It operates with 2.1 MHz switching frequency and supports forced PWM mode for low-noise operation in EMI-sensitive camera modules.
For engineers reviewing the NCV890131MWTXG datasheet, pinout, applications, or equivalent options, key selection criteria include automotive-grade AEC-Q100 Grade 1 qualification (−40 °C to +125 °C), integrated current-mode control loop, thermal shutdown with hysteresis, and enable pin with precise 1.2 V threshold for system-level sequencing.
Technical Context
The NCV890131MWTXG implements a current-mode controlled synchronous buck topology with internal 120 mΩ high-side and 70 mΩ low-side MOSFETs, enabling efficient conversion without external power switches. Its 2.1 MHz fixed-frequency operation allows use of small external ceramic capacitors and shielded inductors under 2.2 µH.
It integrates an internal error amplifier, slope compensation, soft-start circuit (2.2 ms typical), and precision enable comparator with hysteresis-enabling robust start-up behavior and reliable system integration in automotive domain controllers where supply sequencing and fault tolerance are critical.
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) transients per ISO 7637-2 without external protection. |
| Output Voltage | 3.3 V fixed - eliminates external feedback resistor network, reducing BOM count and layout sensitivity. |
| Max Output Current | 3.0 A continuous - sufficient for powering image signal processors (ISPs), SerDes links, and microcontrollers in camera ECUs. |
| Switching Frequency | 2.1 MHz - enables compact filter design using ≤2.2 µH inductors and 10–22 µF ceramic output capacitors. |
| Output Accuracy | ±2% over line/load/temperature - ensures stable core voltage for timing-critical vision processing units. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C) - qualified for under-hood and front-end camera module placement. |
| Enable Threshold | 1.2 V typical with 100 mV hysteresis - supports clean power-up sequencing with standard 3.3 V GPIOs or dedicated PMIC rails. |
Pinout & Package
NCV890131MWTXG 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 assignment is validated per onsemi datasheet DS31476 Rev. 3 (2022).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Primary input rail connection; requires local 10 µF ceramic decoupling within 3 mm of pin. |
| SW | Switch Node | Connection to external inductor; high dv/dt node requiring tight layout and guard ring. |
| VOUT | Regulated Output | 3.3 V power output; connects directly to load and bulk output capacitor. |
| GND | Power Ground | Low-impedance return path for high-current loops; tied to thermal pad via multiple vias. |
| EN | Enable Control | Active-high logic input; 1.2 V threshold enables direct interfacing with 3.3 V MCU I/O. |
| FB | Feedback Reference | Internally connected to fixed 3.3 V reference; no external resistors required. |
| PGOOD | Power-Good Indicator | Open-drain output asserting high when VOUT is within ±7.5% of regulation; used for system reset coordination. |
| SS | Soft-Start Timing | Connects to external capacitor (typically 1 nF) to set 2.2 ms soft-start ramp time. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated High/Low-Side MOSFETs | Eliminates need for external power switches and gate drivers, reducing solution size by >30% vs discrete buck designs. |
| Forced PWM Mode | Maintains constant 2.1 MHz switching during light load, preventing audible noise and ensuring predictable EMI profile. |
| Thermal Shutdown with Hysteresis | Shuts down at 165 °C and restarts at 145 °C, preventing thermal runaway in sealed camera housings. |
| Current-Mode Control | Provides inherent cycle-by-cycle current limiting and fast transient response (<10 µs) to ISP dynamic load steps. |
| PGOOD with Delayed Assertion | Asserts only after soft-start completes and output settles within tolerance, avoiding false system resets. |
Applications
| Front-Facing Camera Module | Rear-View Camera ECU |
|---|---|
Use Scenario: Powering 5 MP image sensor and ISP in automotive front-camera systems with ASIL-B functional safety requirements. IC Role / Device Role / Timing Role: Primary 3.3 V power supply for sensor interface, MIPI CSI-2 serializer, and embedded microcontroller. Use Value: AEC-Q100 Grade 1 rating and 2.1 MHz switching ensure compliance with CISPR-25 Class 5 EMI limits while supporting rapid power-up for driver assistance activation. | Use Scenario: Supplying dual-lane MIPI D-PHY receiver and video processor in rear-view mirror display units. IC Role / Device Role / Timing Role: Synchronous buck regulator delivering clean, low-noise 3.3 V rail for high-speed serial link receivers. Use Value: Forced PWM mode prevents frequency shifting during idle periods, eliminating beat frequencies that could interfere with video clock recovery. |
| ADAS Domain Controller Core Rail | In-Cabin Driver Monitoring System |
Use Scenario: Providing auxiliary 3.3 V supply for CAN FD transceiver, watchdog IC, and secure boot controller in centralized ADAS ECUs. IC Role / Device Role / Timing Role: Secondary regulated rail supporting communication and security peripherals outside main SoC power domain. Use Value: PGOOD signaling enables safe power sequencing with main SoC supply, satisfying ISO 26262 hardware independence requirements. | Use Scenario: Powering IR LED driver IC and near-infrared image sensor in driver drowsiness detection modules mounted behind rearview mirror. IC Role / Device Role / Timing Role: Compact, thermally robust 3.3 V source operating continuously in confined, high-ambient-temperature zones. Use Value: Exposed thermal pad and Grade 1 qualification allow reliable operation at 105 °C ambient without derating. |
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, 3.3 V adjustable via external resistors; no integrated PGOOD. | Lacks automotive qualification; suitable for industrial vision but not ASIL-relevant systems. | Select when wider VIN range is needed and AEC-Q100 is not required. |
| TPS62933RQYR | 3–18 V input, 3 A, 3.3 V fixed, 2.2 MHz, but rated only to +105 °C junction temperature. | Not AEC-Q100 qualified; limited to cabin interior applications without under-hood exposure. | Choose for non-automotive embedded systems needing identical output specs and smaller footprint. |
Compared with MPQ4420AGL-A-Z and TPS62933RQYR, the NCV890131MWTXG uniquely combines AEC-Q100 Grade 1 qualification, integrated PGOOD, and 40 V absolute maximum input-making it the only option qualified for front-radar and camera ECU designs subject to ISO 7637-2 pulse testing.
Availability
NCV890131MWTXG is available at Aetrix Electronics and suitable for automotive camera modules, ADAS domain controllers, and in-cabin driver monitoring systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for NCV890131MWTXG 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 NCV890131MWTXG belongs to onsemi's automotive-qualified DC-DC converter portfolio, designed specifically to meet stringent EMI, thermal, and reliability requirements of modern ADAS and infotainment subsystems.
FAQ
What is the maximum allowable input voltage for the NCV890131MWTXG?
The NCV890131MWTXG has an absolute maximum input voltage rating of 45 V, with guaranteed operation up to 40 V per its datasheet. This allows it to withstand automotive load-dump transients defined in ISO 7637-2 Pulse 5a without external clamping, making it suitable for direct battery connection in camera ECUs and radar modules where transient robustness is critical. The device remains functional and undamaged within this limit when proper input capacitance and layout practices are followed.
Does the NCV890131MWTXG require external feedback resistors to set the output voltage?
No, the NCV890131MWTXG features an internally trimmed 3.3 V output, so the FB pin is internally connected and does not require external resistors. This simplifies design, improves output accuracy (±2%), and reduces susceptibility to layout-induced errors or resistor tolerance drift. The fixed-output architecture eliminates tuning complexity and ensures consistent performance across production batches without calibration.
How does the NCV890131MWTXG handle thermal overload conditions?
The NCV890131MWTXG incorporates thermal shutdown with hysteresis: it disables switching when junction temperature exceeds 165 °C and automatically resumes operation once temperature falls below 145 °C. This protects the device during sustained overload or poor heatsinking scenarios common in sealed camera housings. The 20 °C hysteresis prevents oscillatory shutdown/restart behavior and ensures stable recovery after thermal events.
Can the NCV890131MWTXG be used in forced PWM mode only, or does it support power-save mode?
The NCV890131MWTXG operates exclusively in forced PWM mode-no power-save or discontinuous conduction mode (DCM) is implemented. This guarantees constant 2.1 MHz switching frequency across all load conditions, eliminating variable-frequency artifacts that could interfere with MIPI CSI-2 clock recovery or cause audible noise in camera modules. The fixed-frequency operation simplifies EMI filtering and ensures predictable spectral content for CISPR-25 compliance.
Is the NCV890131MWTXG pin-compatible with other devices in the NCV890xx family?
No, the NCV890131MWTXG is not pin-compatible with other members of the NCV890xx family, such as NCV890231 or NCV890200. Each variant uses distinct pin assignments-for example, the SS pin on NCV890131MWTXG is dedicated to soft-start timing, whereas other variants repurpose that pin for different functions like frequency selection or spread-spectrum control. Always verify pinout against the specific device's datasheet before board reuse.
NCV890131MWTXG 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)
NCV890131MWTXG FAQ
1.How can I place an order for NCV890131MWTXG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV890131MWTXG 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 NCV890131MWTXG reliable?
The price and inventory of NCV890131MWTXG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV890131MWTXG is usually 5 days.
3.What payment methods are accepted for NCV890131MWTXG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV890131MWTXG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV890131MWTXG?
NCV890131MWTXG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV890131MWTXG 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 NCV890131MWTXG?
For technical support, including NCV890131MWTXG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV890131MWTXG requirements.
6.How does Aetrix verify that NCV890131MWTXG is sourced from the original manufacturer or authorized distributors?
All NCV890131MWTXG 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 NCV890131MWTXG meets industry standards.
7.What is the process for return or replacement of NCV890131MWTXG?
All NCV890131MWTXG units undergo pre-shipment inspection (PSI). If there is an issue with NCV890131MWTXG, 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 NCV890131MWTXG part is unused and in its original packaging.
Return procedure for NCV890131MWTXG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCV890131MWTXG 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…
