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onsemi NCV890230PDR2G
- Part No.:
- NCV890230PDR2G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
NCV890230PDR2G.pdf
- Description:
- IC REG BUCK ADJ 2A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,713
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Product details
Overview
NCV890230PDR2G from onsemi is an AEC-Q100 qualified automotive buck switching regulator with internal N-channel power switch, 2 MHz fixed switching frequency, 4.5 V to 36 V input range, and 2.2 A peak current limit. It delivers stable 3.3 V or adjustable down to 0.8 V output for driver information systems requiring low EMI and compact layout.
For engineers reviewing the NCV890230PDR2G datasheet, pinout, applications, or equivalent options, key selection criteria include AM-band–free 2 MHz operation, load-dump tolerance up to 45 V, ±1.75% output voltage accuracy, thermal shutdown, and integrated soft-start with 1.4 ms duration.
Technical Context
The NCV890230PDR2G employs current-mode control with internal slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its oscillator maintains 2 MHz free-running frequency below 18 V input, then folds back to 500 kHz above 19.8 V to sustain regulation under high VIN.
It integrates a bootstrap gate driver (DRV pin) delivering 3.3 V typical to drive the internal high-side N-channel MOSFET, with dedicated BST and SW pins supporting external bootstrap capacitor charging. Protection includes cycle-by-cycle current limiting, short-circuit foldback, undervoltage lockout (4.5 V start), overvoltage shutdown (36 V stop), and thermal shutdown at 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 36 V - supports full automotive battery range including cold-crank (4.5 V) and load dump (up to 45 V transient) |
| Switching Frequency | 2 MHz (typ.) - operates above AM band (1.6–2.0 MHz) to eliminate need for external EMI filters |
| Output Current Capability | 2.2 A (min) peak current limit - enables 2 A continuous output with proper thermal design and inductor selection |
| Output Voltage Accuracy | ±1.75% - ensures tight regulation for sensitive infotainment and vision system rails |
| Soft-Start Time | 1.4 ms (typ.) - prevents inrush current and stabilizes output during power-up or fault recovery |
| Quiescent Current (Enabled) | 3 mA (typ.) - minimizes standby loss in always-on automotive subsystems |
| Thermal Shutdown Threshold | 150 °C - protects against sustained overload or poor PCB heatsinking in enclosed modules |
Pinout & Package
NCV890230PDR2G is housed in an SOIC-8 EP (Case 751AC) package with exposed thermal pad electrically connected to GND for enhanced thermal performance and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Primary input supply | Accepts 4.5–36 V battery input; requires local ceramic decoupling capacitor for low-impedance path |
| DRV (Pin 2) | Internal gate driver output | Supplies regulated ~3.3 V to charge external bootstrap capacitor; enables efficient high-side MOSFET drive |
| GND (Pin 3) | Power and signal ground reference | Must be tied to exposed pad and low-impedance PCB ground plane for thermal and EMI control |
| BST (Pin 4) | Bootstrap supply node | Connects to external bootstrap capacitor (CBST); provides voltage > VIN to gate driver for low RDS(on) |
| EN (Pin 5) | Enable control input | TTL-compatible; direct battery tie possible; pulls regulator into <5 µA shutdown mode when grounded |
| COMP (Pin 6) | Error amplifier output | Interface for external Type II compensation network (RCOMP/CCOMP) to stabilize loop dynamics |
| FB (Pin 7) | Feedback input | Senses output via resistor divider; detects precharged outputs (>20 mV threshold) before soft-start initiation |
| SW (Pin 8) | Power switch node | Connects to inductor and freewheeling diode cathode; carries high di/dt switching current |
Key Features
| Feature | Design Value |
|---|---|
| Integrated N-channel power switch | Eliminates external high-side MOSFET and associated gate drive complexity; RDS(on) = 650 mΩ (typ.) |
| 2 MHz fixed-frequency operation | Enables use of small 4.7 µH inductors and all-ceramic output capacitors for space-constrained automotive modules |
| Load-dump survivability | Withstands 45 V transients without latch-up or damage - meets ISO 7637-2 Pulse 5a requirements |
| Frequency foldback protection | Automatically reduces switching frequency from 2 MHz to 500 kHz above 19.8 V input to maintain regulation and limit power dissipation |
| Output precharge detection | Monitors FB pin prior to startup; delays soft-start until output discharges below 20 mV to prevent shoot-through |
| AEC-Q100 Grade 1 qualification | Guarantees operation from −40 °C to +150 °C junction temperature for under-hood and dashboard applications |
Applications
| Audio Systems | Infotainment Head Units |
|---|---|
Use Scenario: Powering DSP, ADCs, and Class D amplifiers in vehicle audio subsystems with strict EMI limits. IC Role / Device Role / Timing Role: Primary 3.3 V or 5 V buck regulator supplying low-noise analog and digital circuitry. Use Value: 2 MHz switching avoids AM band interference; ±1.75% output accuracy ensures consistent audio codec performance across temperature. |
Use Scenario: Generating core logic and interface rails (e.g., 3.3 V, 1.8 V) in centralized infotainment ECUs with multi-display support. IC Role / Device Role / Timing Role: High-efficiency intermediate bus converter stepping down 12 V battery to stable low-voltage domains. Use Value: Integrated soft-start (1.4 ms) prevents brownout during hot-plug events; AEC-Q100 qualification ensures reliability over 15-year vehicle lifecycle. |
| Safety Vision Systems | Digital Instrument Clusters |
Use Scenario: Supplying image sensor interfaces, ISP processors, and MIPI PHYs in forward-facing ADAS cameras. IC Role / Device Role / Timing Role: Dedicated 3.3 V rail regulator with fast transient response for burst-mode imaging loads. Use Value: Current-mode control with slope compensation delivers stable regulation during rapid current steps; thermal shutdown prevents field failure in sealed camera housings. |
Use Scenario: Powering TFT-LCD controllers, GPU cores, and touch controller ICs in high-resolution digital dashboards. IC Role / Device Role / Timing Role: Compact, low-profile buck regulator mounted directly behind display module PCB. Use Value: SOIC-8 EP package with exposed pad enables 40 °C/W θJA on 4-layer board; 2 MHz operation allows ultra-small 2.2 µH inductors for height-sensitive layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4420AGL-A-Z | 40 V max input, 2 A continuous, 2.2 MHz, no integrated bootstrap diode; requires external high-side driver support | Lacks AEC-Q100 qualification and load-dump tolerance; suitable for industrial, not automotive safety-critical use | Select only for non-automotive designs where cost and footprint are prioritized over automotive compliance |
| TPS54202HDDCR | 6–18 V input, 2 A, 2.2 MHz, integrated FETs but no BST/SW separation; lower VIN range excludes 24 V truck systems | No 45 V load-dump rating or thermal shutdown hysteresis; limited to passenger-car 12 V systems only | Consider only for 12 V-only infotainment accessories with ambient temperature <105 °C |
Compared with MPQ4420AGL-A-Z and TPS54202HDDCR, the NCV890230PDR2G uniquely combines AEC-Q100 Grade 1, 45 V load-dump survival, and 2 MHz operation in a single SOIC-8 EP package - making it the only drop-in solution for demanding automotive front-end power rails.
Availability
NCV890230PDR2G is available at Aetrix Electronics and suitable for automotive audio systems, infotainment head units, and safety vision systems requiring stable component supply across extended temperature and long product lifecycles.
Supply support for NCV890230PDR2G 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 focused on energy-efficient electronics, with leadership in automotive, industrial, and cloud power solutions.
The NCV890230PDR2G belongs to onsemi's automotive-grade DC-DC converter portfolio, designed specifically for battery-connected, high-reliability power conversion in driver information and ADAS subsystems.
FAQ
What is the minimum input voltage required for NCV890230PDR2G to regulate a 3.3 V output?
The NCV890230PDR2G requires a minimum input voltage of 4.5 V to regulate a 3.3 V output, as defined by its undervoltage lockout (UVLO) start threshold. Below this, the device remains in shutdown mode with quiescent current less than 5 µA. This ensures reliable startup during automotive cold-crank conditions.
Does NCV890230PDR2G support adjustable output voltages, and what is the lowest achievable setting?
Yes, the NCV890230PDR2G supports adjustable output voltages using an external resistor divider on the FB pin. The feedback reference voltage is 0.8 V (±1.75%), enabling outputs as low as 0.8 V. For example, a 3.3 V output uses RFB1 = 100 kΩ and RFB2 = 31.6 kΩ per the datasheet design example.
How does NCV890230PDR2G handle high-input-voltage conditions such as load dump?
The NCV890230PDR2G withstands up to 45 V input transients and initiates overvoltage shutdown at 36 V (VOVSTP). It also features VIN frequency foldback, reducing switching frequency from 2 MHz to 500 kHz above 19.8 V to maintain regulation and limit power dissipation - critical for surviving ISO 7637-2 Pulse 5a events.
What thermal management provisions does NCV890230PDR2G require on the PCB?
The NCV890230PDR2G requires the exposed pad (EPAD) to be soldered to a low-thermal-resistance ground plane. With proper 4-layer PCB layout (1 oz copper), its junction-to-ambient thermal resistance is 40 °C/W. Thermal shutdown activates at 150 °C with 5–20 °C hysteresis, allowing safe auto-recovery after cooling.
Can NCV890230PDR2G operate without an external bootstrap capacitor?
No - the NCV890230PDR2G requires an external bootstrap capacitor (CBST) connected between BST and SW pins. The internal DRV pin supplies ~3.3 V to recharge CBST, enabling efficient gate drive of the internal high-side N-channel MOSFET. Omitting CBST causes immediate loss of regulation and potential device latch-up.
NCV890230PDR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) 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:
- 8-SOIC-EP
NCV890230PDR2G FAQ
1.How can I place an order for NCV890230PDR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV890230PDR2G 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 NCV890230PDR2G reliable?
The price and inventory of NCV890230PDR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV890230PDR2G is usually 5 days.
3.What payment methods are accepted for NCV890230PDR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV890230PDR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV890230PDR2G?
NCV890230PDR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV890230PDR2G 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 NCV890230PDR2G?
For technical support, including NCV890230PDR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV890230PDR2G requirements.
6.How does Aetrix verify that NCV890230PDR2G is sourced from the original manufacturer or authorized distributors?
All NCV890230PDR2G 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 NCV890230PDR2G meets industry standards.
7.What is the process for return or replacement of NCV890230PDR2G?
All NCV890230PDR2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV890230PDR2G, 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 NCV890230PDR2G part is unused and in its original packaging.
Return procedure for NCV890230PDR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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