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onsemi NCV890100PDR2G
- Part No.:
- NCV890100PDR2G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
NCV890100PDR2G.pdf
- Description:
- IC REG BUCK ADJ 1.2A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,934
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Product details
Overview
NCV890100PDR2G from onsemi is an AEC-Q100 qualified automotive buck switching regulator with internal N-channel power switch, 2 MHz fixed-frequency operation, 4.5 V to 36 V input range, and 1.2 A output capability. It delivers stable 3.3 V or 5 V outputs for driver information systems while operating above the AM band to avoid EMI filters.
For engineers reviewing the NCV890100PDR2G datasheet, pinout, applications, or equivalent options, key selection criteria include its wettable-flank DFN8 package, ±1.75% output voltage tolerance, 1.4 ms internal soft-start, VIN frequency foldback (18.4 V threshold), and thermal shutdown with 150 °C activation.
Technical Context
The NCV890100PDR2G implements current-mode control with integrated slope compensation optimized for a 4.7 µH inductor, enabling stable operation at duty cycles >50%. Its oscillator features automatic frequency foldback-reducing switching frequency from 2 MHz to 500 kHz when VIN exceeds 18.4 V-to maintain regulation under high-input transients like load dump.
It integrates a bootstrap gate driver (DRV pin regulated to 3.3 V) and monitors FB for precharge detection (35 mV threshold) before soft-start initiation. Protection includes cycle-by-cycle peak current limit (1.4 A min), short-circuit foldback (400–600 kHz), and thermal shutdown with 20 °C hysteresis.
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 (40 V withstand) |
| Output Current | 1.2 A continuous - sufficient for infotainment SoCs and display power rails |
| Switching Frequency | 2 MHz (typ.) - places fundamental noise above AM band (1.6–3.0 MHz), eliminating need for bulky EMI filters |
| Output Voltage Accuracy | ±1.75% - ensures tight regulation for sensitive audio and vision system analog supplies |
| Enable Input Logic | TTL-compatible, direct-battery-tieable - simplifies system-level power sequencing without level-shifting |
| Thermal Shutdown | 150 °C activation with 20 °C hysteresis - prevents latch-up during sustained overload or poor heatsinking |
| Quiescent Current (enabled) | 3 mA - enables low-power always-on subsystems without excessive battery drain |
Pinout & Package
NCV890100PDR2G uses a wettable-flank DFN8 (3 mm × 3 mm, 0.65 mm pitch, Case 506BY) with exposed thermal pad electrically connected to GND. The package supports automated optical inspection (AOI) of solder joints and provides low thermal resistance (50 °C/W junction-to-ambient on 4-layer PCB).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Main input supply connection | Accepts 4.5–36 V; requires local ceramic input capacitor to minimize high-frequency ripple and EMI |
| DRV (Pin 2) | Internal gate driver output | Supplies regulated 3.3 V to external bootstrap capacitor; UVLO thresholds ensure reliable high-side FET turn-on |
| GND (Pin 3) | Power and signal ground reference | Must be tied to exposed pad; forms low-inductance return path for switch node current and improves thermal dissipation |
| EN (Pin 4) | Logic-level enable input | Active-high; 2 V min logic high allows direct connection to battery or MCU GPIO without pull-up |
| COMP (Pin 5) | Error amplifier output | Connects to RC network for loop compensation; transconductance (0.6–1.5 mS) sets bandwidth and phase margin |
| FB (Pin 6) | Feedback voltage sense input | Monitors output via resistor divider; 0.8 V reference enables adjustable outputs down to 0.8 V |
| BST (Pin 7) | Bootstrap supply input | Charges external capacitor to generate gate drive voltage >VIN for low RDS(on) operation |
| SW (Pin 8) | Power switch node | Connects to inductor and freewheeling diode cathode; high dv/dt demands tight layout to reduce EMI |
Key Features
| Feature | Design Value |
|---|---|
| Wettable Flanks DFN8 | Enables AOI-capable solder joint inspection and improves reliability in automotive thermal cycling |
| 2 MHz Free-running Oscillator | Eliminates external timing components and avoids AM band interference without added filtering cost |
| Frequency Foldback (18.4 V threshold) | Maintains regulation during 24 V system transients by halving switching frequency to preserve minimum off-time |
| Output Precharge Detection (35 mV threshold) | Prevents false start by verifying SW node discharge before soft-start, avoiding bootstrap capacitor stress |
| 1.4 ms Internal Soft-Start | Controls inrush current into output capacitors, preventing input brownout and protecting downstream loads |
| AEC-Q100 Grade 1 Qualified | Validated for −40 °C to +125 °C ambient operation with PPAP documentation support for automotive OEMs |
Applications
| Audio Power Supply | Infotainment Head Unit |
|---|---|
Use Scenario: Powers Class AB/D audio amplifiers and DACs in vehicle cabin audio systems. IC Role / Device Role / Timing Role: Primary 5 V/3.3 V DC-DC converter delivering clean, low-noise power with minimal ripple. Use Value: 2 MHz switching avoids audible beat frequencies; ±1.75% accuracy maintains consistent amplifier bias and SNR. |
Use Scenario: Supplies core voltage to application processors and display interfaces in central infotainment units. IC Role / Device Role / Timing Role: High-efficiency buck regulator handling wide-input transients during engine start-stop cycles. Use Value: Load-dump tolerance (40 V) and frequency foldback prevent reset events during alternator surges. |
| Safety Vision System | Digital Instrument Cluster |
Use Scenario: Provides regulated 3.3 V for CMOS image sensors and ISP processors in ADAS camera modules. IC Role / Device Role / Timing Role: Low-noise, thermally robust power stage powering safety-critical imaging subsystems. Use Value: Thermal shutdown (150 °C) and AEC-Q100 qualification ensure fail-safe operation in sealed, high-temp enclosures. |
Use Scenario: Generates 5 V rail for TFT-LCD backlight drivers and microcontroller peripherals in digital dashboards. IC Role / Device Role / Timing Role: Compact, high-frequency regulator enabling space-constrained PCB layouts behind instrument panels. Use Value: Wettable-flank DFN8 allows automated solder-joint inspection, meeting automotive zero-defect manufacturing requirements. |
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 | 2.2 MHz switching, 2 A output, no integrated BST diode; requires external bootstrap diode | Higher current capability but lacks precharge detection and AEC-Q100 Grade 1 validation | Preferred for non-automotive industrial designs needing >1.2 A; not drop-in for NCV890100PDR2G due to different pinout and protection set |
| TPS54202HDDCR | 2.5 MHz, 2 A, integrated MOSFETs, but only rated to 17 V input and not AEC-Q100 qualified | Lacks load-dump tolerance and automotive temperature range; suited for consumer-grade infotainment accessories | Consider for cost-sensitive non-safety applications where 36 V input and Grade 1 qualification are unnecessary |
Compared with MPQ4420AGL-A-Z and TPS54202HDDCR, the NCV890100PDR2G uniquely combines AEC-Q100 Grade 1 compliance, 36 V input rating with 40 V transient tolerance, and integrated precharge detection-making it the only option qualified for front-camera and instrument cluster primary power in production vehicles.
Availability
NCV890100PDR2G is available at Aetrix Electronics and suitable for automotive infotainment, ADAS vision systems, and digital instrument clusters requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for NCV890100PDR2G 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 technologies for automotive, industrial, cloud, and IoT applications, with deep expertise in power management and AEC-Q100-qualified solutions.
The NCV890100PDR2G belongs to onsemi's automotive-grade buck regulator product line, designed specifically for battery-connected systems in driver information and safety-critical electronics where high input voltage tolerance and EMI robustness are mandatory.
FAQ
What is the maximum input voltage the NCV890100PDR2G can withstand during load dump events?
The NCV890100PDR2G is specified to withstand up to 40 V on the VIN pin during automotive load dump transients, as confirmed in the Absolute Maximum Ratings table. This rating is validated per ISO 7637-2 Pulse 5a and ensures reliable operation without external clamping in 12 V and 24 V vehicle architectures.
Does the NCV890100PDR2G require an external bootstrap diode?
No, the NCV890100PDR2G does not require an external bootstrap diode. Its internal DRV pin provides a regulated 3.3 V supply to charge the external bootstrap capacitor (CBST), and the IC integrates all necessary gate drive circuitry for the internal N-channel power switch.
What is the purpose of the FB pin's precharge detection function in the NCV890100PDR2G?
The FB pin precharge detection in the NCV890100PDR2G monitors for residual output voltage before initiating soft-start. If the FB voltage exceeds 35 mV (VSSEN), startup is delayed until the output discharges-preventing damage to the bootstrap capacitor and ensuring safe initial gate drive voltage establishment.
Can the NCV890100PDR2G operate with a 4.7 µH inductor and all-ceramic output capacitors?
Yes, the NCV890100PDR2G is explicitly optimized for a 4.7 µH inductor and all-ceramic output filter capacitors, as stated in the datasheet's DESIGN METHODOLOGY section. This combination enables compact, low-ripple, EMI-efficient designs without electrolytic or tantalum components.
Is the NCV890100PDR2G pin-compatible with other devices in the NCV890xxx family?
No, the NCV890100PDR2G is not pin-compatible with other NCV890xxx variants such as NCV890200. Pin assignments-including COMP, FB, and BST-are identical across the family, but the NCV890100PDR2G has unique internal compensation and current-limit settings; substitution requires validation of loop stability and protection behavior.
NCV890100PDR2G 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:
- 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:
- 8-SOIC-EP
NCV890100PDR2G FAQ
1.How can I place an order for NCV890100PDR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV890100PDR2G 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 NCV890100PDR2G reliable?
The price and inventory of NCV890100PDR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV890100PDR2G is usually 5 days.
3.What payment methods are accepted for NCV890100PDR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV890100PDR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV890100PDR2G?
NCV890100PDR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV890100PDR2G 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 NCV890100PDR2G?
For technical support, including NCV890100PDR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV890100PDR2G requirements.
6.How does Aetrix verify that NCV890100PDR2G is sourced from the original manufacturer or authorized distributors?
All NCV890100PDR2G 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 NCV890100PDR2G meets industry standards.
7.What is the process for return or replacement of NCV890100PDR2G?
All NCV890100PDR2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV890100PDR2G, 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 NCV890100PDR2G part is unused and in its original packaging.
Return procedure for NCV890100PDR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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