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onsemi NCV896530MWATXG
- Part No.:
- NCV896530MWATXG
- Manufacturer:
- onsemi
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
NCV896530MWATXG.pdf
- Description:
- IC REG BUCK ADJ 1.6A DL 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,809
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Product details
Overview
NCV896530MWATXG from onsemi is a dual-channel synchronous buck converter IC designed for automotive driver information systems, delivering up to 1 A per channel with adjustable outputs from 0.9 V to 3.3 V, operating at 2.1 MHz switching frequency with 180° out-of-phase operation, and housed in a wettable-flank 3×3 mm DFN-10 package.
For engineers reviewing the NCV896530MWATXG datasheet, pinout, applications, or equivalent options, key selection considerations include its AEC-Q100 qualification, thermal shutdown and hiccup-mode current limiting, external clock synchronization capability, and integrated soft-start for inrush control in infotainment and vision system power rails.
Technical Context
The NCV896530MWATXG implements two independent PWM-controlled synchronous buck regulators sharing a common 2.1 MHz oscillator with 180° phase shift to minimize input ripple current. Each channel uses internal high-side (500 mΩ typ) and low-side (450 mΩ typ) MOSFETs with current-mode control and slope compensation.
It features an open-drain Power-On Reset (POR) output asserting low when either output falls below 90% of nominal, plus dedicated EN1/EN2 digital inputs with 1.2 V logic-high threshold and SYNC input supporting external clock synchronization from 1.8 MHz to 2.7 MHz - enabling EMI reduction in clustered automotive power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports direct connection to automotive 3.3 V or 5 V downstream rails without pre-regulation. |
| Output Voltage Range | 0.9 V to 3.3 V (externally adjustable via FB1/FB2 resistive dividers) - covers core logic, memory, and display interface supply requirements. |
| Max Output Current | 1600 mA total (1 A per channel) - sufficient for dual-core SoC I/O and auxiliary processor rails in instrument clusters. |
| Switching Frequency | 2.1 MHz (±0.3 MHz) - operates above AM band (1.8 MHz min) to avoid radio interference in vehicle cabins. |
| Feedback Reference Voltage | 0.6 V ±1% (25°C), ±2% (−40°C to +125°C) - enables precise regulation with minimal divider resistor error impact. |
| Thermal Shutdown Threshold | 150°C to 190°C (with 5–20°C hysteresis) - protects against sustained overload in sealed automotive enclosures. |
| Soft-Start Time | 400 µs to 1000 µs - limits inrush current during cold start or wake-up sequences in ADAS subsystems. |
Pinout & Package
The NCV896530MWATXG is packaged in a Pb-free, wettable-flank 3×3 mm DFN-10 (Case 485C) with exposed thermal pad (Pin 11), optimized for automated optical inspection and thermal performance in space-constrained automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB1 | Analog feedback input | Connects to voltage divider from VOUT1; sets regulated output via 0.6 V reference - determines final accuracy and loop stability. |
| 2 EN1 | Digital enable input | Active-HIGH (≥1.2 V) control for Channel 1; must be pulled to GND or VIN to prevent floating - enables sequenced power-up. |
| 3 SYNC | External clock sync input | Accepts 1.8–2.7 MHz square wave; forces both channels into synchronized mode - critical for multi-rail EMI compliance. |
| 4 VIN | Main power input | Supplies analog/digital blocks and high-side FETs; requires local 10 µF ceramic decoupling - defines maximum input stress margin. |
| 5 SW1 | Power switch node | Drives external inductor for Channel 1; carries high di/dt switching current - dictates PCB layout routing and thermal relief design. |
| 6 SW2 | Power switch node | Drives external inductor for Channel 2; 180° out-of-phase with SW1 - reduces input capacitor RMS current by ~30% vs. in-phase operation. |
| 7 GND | Analog ground reference | Reference for error amplifiers and internal logic; must connect to low-impedance system ground plane - separates analog return from power ground. |
| 8 POR | Open-drain reset output | Pulled low if either VOUT drops <90%; requires external ~500 kΩ pull-up - used for system-level fault signaling or microcontroller reset assertion. |
| 9 EN2 | Digital enable input | Active-HIGH (≥1.2 V) control for Channel 2; independent of EN1 - supports asymmetric rail activation in vision processors. |
| 10 FB2 | Analog feedback input | Connects to voltage divider from VOUT2; identical function to FB1 - enables independent regulation of dual supplies. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diodes, reducing conduction loss and improving full-load efficiency by ≥8% over asynchronous designs. |
| 180° out-of-phase switching | Halves peak input capacitor ripple current versus in-phase operation - extends capacitor lifetime in high-temperature engine bay environments. |
| Wettable flanks (DFN-10) | Enables automated optical inspection (AOI) of solder joints on bottom terminals - improves manufacturing yield for automotive-grade assemblies. |
| AEC-Q100 Grade 1 qualified | Validated for −40°C to +125°C junction operation with PPAP documentation - meets functional safety requirements for ASIL-B systems. |
| Hiccup-mode overcurrent protection | Disables outputs and retries after fixed delay (60% of soft-start time); limits average power dissipation during sustained short-circuit events. |
Applications
| Audio System Power | Infotainment Head Unit |
|---|---|
Use Scenario: Dual-rail supply for Class-D amplifier IC and DSP core in automotive audio subsystems. IC Role / Device Role / Timing Role: Primary DC-DC regulator providing isolated 1.2 V core and 3.3 V I/O rails with tight transient response. Use Value: 2.1 MHz switching avoids audible noise coupling into analog audio paths while maintaining fast load-step recovery (<10 µs). | Use Scenario: Power management for touchscreen controller, GPU, and HDMI transmitter in central display units. IC Role / Device Role / Timing Role: Dual-output buck converter delivering sequenced 1.1 V GPU and 1.8 V interface rails under dynamic load profiles. Use Value: Independent EN1/EN2 pins enable precise power sequencing aligned with SoC boot requirements, preventing latch-up. |
| Vision Processing Module | Digital Instrument Cluster |
Use Scenario: Supplying image sensor ISP and MIPI CSI-2 serializer in surround-view camera ECUs. IC Role / Device Role / Timing Role: Compact dual-buck regulator handling burst-mode loads (e.g., frame capture) with low quiescent current in standby. Use Value: 4 µA typical standby current (ISTBMAX) extends battery life during vehicle sleep mode without compromising wake-up latency. | Use Scenario: Powering TFT LCD driver, microcontroller, and CAN transceiver in digital gauge clusters. IC Role / Device Role / Timing Role: Regulator with POR output tied to MCU reset line to ensure deterministic boot after brown-out events. Use Value: POR asserts low if either rail deviates >10% - prevents corrupted display rendering or firmware execution due to undervoltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4332GQ-A | 2.2 MHz fixed-frequency, 2 A total output, no POR output, QFN-16 package | Lacks integrated POR and AEC-Q100 qualification; suited for industrial rather than automotive use | Select when higher current headroom is needed and automotive qualification is not required. |
| TPS650361RGER | 2.25 MHz, 1.2 A total, integrated LDOs, 20-pin QFN, no SYNC pin | Includes auxiliary LDOs but no external clock sync; larger footprint and no wettable flanks | Choose when mixed analog/digital rail generation (e.g., 1.8 V + 3.3 V + 5 V) is needed alongside buck conversion. |
Compared with MPQ4332GQ-A and TPS650361RGER, the NCV896530MWATXG provides automotive-specific features - AEC-Q100 Grade 1 rating, POR output, wettable-flank DFN packaging, and 180° phase-shifted operation - making it uniquely suitable for safety-critical driver information systems where EMI, reliability, and manufacturability are non-negotiable.
Availability
NCV896530MWATXG is available at Aetrix Electronics and suitable for automotive infotainment, digital instrument clusters, and vision processing modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for NCV896530MWATXG 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 supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV896530MWATXG belongs to onsemi's automotive-qualified DC-DC converter portfolio, engineered specifically for driver information systems demanding high integration, low EMI, and robust fault protection in harsh vehicular environments.
FAQ
What is the minimum input voltage required for the NCV896530MWATXG to maintain regulation at 3.3 V output?
The NCV896530MWATXG supports 100% duty cycle operation, enabling low-dropout regulation. Minimum input voltage depends on load: for 1 A output, VIN(min) ≈ VOUT + IOUT × RDS(on)HS + IOUT × RINDUCTOR. With RDS(on)HS = 0.82 Ω max and typical inductor DCR < 50 mΩ, VIN(min) is ~3.9 V at full load - verified in Electrical Characteristics Table (page 4) and Low Dropout Operation section (page 7).
Does the NCV896530MWATXG require external compensation components for stable operation?
No, the NCV896530MWATXG uses internal compensation optimized for standard 2.2 µH inductors and 10 µF ceramic output capacitors. The datasheet specifies stable operation with these values across all operating conditions; external compensation is neither required nor recommended unless using non-standard LC combinations exceeding 100 µF output capacitance - in which case small-signal analysis is advised per page 8.
How does the hiccup-mode current limit protect the NCV896530MWATXG during sustained overload?
When peak inductor current exceeds 1.4–2.0 A (per Electrical Characteristics), the NCV896530MWATXG disables both channels and waits for a hiccup delay equal to 60% of soft-start time (~240–600 µs) before attempting restart. This cycle repeats until fault clears - limiting average junction temperature rise and preventing thermal runaway during hard shorts, as detailed in DC/DC Operation Description (page 7).
Can the NCV896530MWATXG operate with only one channel enabled?
Yes, the NCV896530MWATXG supports single-channel operation: EN1 or EN2 can be held HIGH while the other is LOW. When only one channel is active, the switching frequency remains ~2.1 MHz, but the inactive channel's SWx node floats. POR remains low until both outputs reach regulation - confirmed in PIN FUNCTION DESCRIPTION (page 3) and Power On Reset section (page 7).
What is the purpose of the exposed thermal pad (Pin 11) on the NCV896530MWATXG DFN package?
The exposed thermal pad (Pin 11) serves as the power ground reference for the NFET power stage and must be soldered to a large copper pour connected to system ground and both input/output capacitors. It reduces thermal resistance (RJA = 40 °C/W) and improves power dissipation - critical for sustaining 1600 mA total output in automotive ambient temperatures up to +105°C, as specified in Maximum Ratings (page 3) and Mechanical Outline (page 8).
NCV896530MWATXG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- 3.3V
- Current - Output:
- 1.6A
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
NCV896530MWATXG FAQ
1.How can I place an order for NCV896530MWATXG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV896530MWATXG 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 NCV896530MWATXG reliable?
The price and inventory of NCV896530MWATXG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV896530MWATXG is usually 5 days.
3.What payment methods are accepted for NCV896530MWATXG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV896530MWATXG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV896530MWATXG?
NCV896530MWATXG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV896530MWATXG 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 NCV896530MWATXG?
For technical support, including NCV896530MWATXG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV896530MWATXG requirements.
6.How does Aetrix verify that NCV896530MWATXG is sourced from the original manufacturer or authorized distributors?
All NCV896530MWATXG 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 NCV896530MWATXG meets industry standards.
7.What is the process for return or replacement of NCV896530MWATXG?
All NCV896530MWATXG units undergo pre-shipment inspection (PSI). If there is an issue with NCV896530MWATXG, 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 NCV896530MWATXG part is unused and in its original packaging.
Return procedure for NCV896530MWATXG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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