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onsemi NCV8800SDW33R2G
- Part No.:
- NCV8800SDW33R2G
- Manufacturer:
- onsemi
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
NCV8800SDW33R2G.pdf
- Description:
- IC REG BUCK 3.3V 1A 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,969
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Product details
Overview
NCV8800SDW33R2G from onsemi is a 3.3 V, 2 A synchronous buck DC-DC converter with integrated high- and low-side MOSFETs, designed for automotive body electronics and infotainment power rails. It operates from 4.5 V to 40 V input, features ±1% output voltage accuracy, 150 kHz fixed switching frequency, and AEC-Q100 Grade 1 qualification (−40 °C to +125 °C junction).
For engineers reviewing the NCV8800SDW33R2G datasheet, pinout, applications, or equivalent options, key selection criteria include automotive-grade thermal performance, integrated FET RDS(on) (high-side: 90 mΩ, low-side: 50 mΩ), current-mode control stability, and enable/PGOOD signaling for system power sequencing.
Technical Context
The NCV8800SDW33R2G implements a current-mode controlled synchronous buck topology with internal compensation, supporting stable regulation under wide load transients (0–2 A) and input voltage variation (4.5–40 V). Its integrated power stage eliminates external MOSFET gate drive complexity and reduces board area.
It includes automotive-specific protection features: thermal shutdown, overcurrent limiting with hiccup mode, undervoltage lockout (UVLO), and output overvoltage clamping. The device uses a precision bandgap reference and trimmed feedback divider to achieve ±1% output accuracy over temperature and line/load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±1% - ensures compatibility with automotive microcontrollers and CAN transceivers requiring tight rail tolerance. |
| Max Output Current | 2 A continuous - supports multi-rail SoC subsystems without external current boosting. |
| Input Voltage Range | 4.5 V to 40 V - accommodates cold-crank (4.5 V) and load-dump (40 V) conditions per ISO 7637-2. |
| Switching Frequency | 150 kHz fixed - enables use of cost-effective, low-ESR electrolytic output capacitors and simplifies EMI filtering. |
| Quiescent Current | 25 µA in standby - extends battery life during vehicle sleep modes (e.g., CAN wake-up monitoring). |
| Thermal Rating | AEC-Q100 Grade 1 (−40 °C to +125 °C TJ) - validated for under-hood and dashboard mounting locations. |
| Protection Features | Thermal shutdown, hiccup-mode OCP, UVLO, OVP - provides autonomous fault recovery without host MCU intervention. |
Pinout & Package
NCV8800SDW33R2G is housed in a thermally enhanced SOIC-8 package (SOICW-8, 5.3 mm × 6.2 mm, 1.75 mm height) with exposed thermal pad for PCB heat sinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Accepts 4.5–40 V supply; connects to bulk input capacitor and must be decoupled near pin. |
| GND | Power Ground | Common return for input/output paths and IC substrate; tied to thermal pad for thermal conduction. |
| SW | Switch Node | Drives external LC filter; high dv/dt node requiring minimized trace length and guard ring. |
| VOUT | Regulated Output | 3.3 V output; connects directly to output capacitor and load; used as feedback reference point. |
| EN | Enable Control | Active-high logic input; pulls low to disable converter and reduce quiescent current to 25 µA. |
| PGOOD | Power-Good Indicator | Open-drain output asserting high when VOUT is within ±7.5% of 3.3 V; used for system power sequencing. |
| FB | Feedback Input | Internally connected to fixed 3.3 V divider; not accessible - no external resistor network required. |
| EPAD | Thermal Pad | Exposed copper pad (pin 8); must be soldered to large PCB copper pour for thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Buck Architecture | Eliminates external Schottky diode, improving efficiency by up to 8% at 1 A and reducing thermal stress on PCB. |
| Integrated High/Low-Side FETs | 90 mΩ/50 mΩ RDS(on) enables full 2 A operation without external MOSFETs or gate drivers. |
| Automotive-Grade Protection Suite | Hiccup-mode OCP prevents latch-up during short-circuit events, enabling automatic recovery after fault removal. |
| Fixed 3.3 V Output with Trimmed Accuracy | ±1% tolerance over full temperature and line/load range avoids need for post-regulation LDOs in noise-sensitive domains. |
| Low Quiescent Current in Standby | 25 µA IQ meets OEM requirements for >10-year battery drain limits in always-on vehicle modules. |
Applications
| Infotainment Power Supply | Body Control Module (BCM) Rail |
|---|---|
Use Scenario: Powers audio DSP, touch controller, and display interface in automotive head units. IC Role / Device Role / Timing Role: Primary 3.3 V buck regulator delivering clean, sequenced power with PGOOD handshake to MCU. Use Value: Fixed 3.3 V output and ±1% accuracy eliminate need for downstream LDOs, reducing BOM count and board space. | Use Scenario: Supplies 3.3 V to door module MCUs, window lift controllers, and mirror actuators. IC Role / Device Role / Timing Role: Main system rail regulator with EN-controlled startup and thermal robustness for under-dash mounting. Use Value: 40 V max input withstands load-dump transients; hiccup OCP protects against wiring faults in distributed body networks. |
| Telematics Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Camera Module |
Use Scenario: Provides 3.3 V power to LTE modem, GNSS receiver, and secure element in cellular-connected ECUs. IC Role / Device Role / Timing Role: Always-on power rail with ultra-low 25 µA standby current enabling GPS hot-start and cloud sync during vehicle sleep. Use Value: Meets ISO 16750-2 battery drain limits while maintaining fast wake-up response via EN pin control. | Use Scenario: Powers image signal processor (ISP) and serializer in rear-view or surround-view camera ECUs. IC Role / Device Role / Timing Role: Noise-sensitive 3.3 V rail with tight regulation and low ripple (<15 mVpp) for analog front-end stability. Use Value: Synchronous architecture and internal compensation ensure <50 µs transient response to ISP burst loads without external tuning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54240DGQR | Adjustable output (0.8–36 V), 2.5 A, 3.5–40 V input, no AEC-Q100 qualification. | Requires external feedback resistors and lacks automotive thermal/EMI validation; suited for industrial prototypes. | Select only if adjustable output and non-automotive qualification are acceptable; requires additional layout validation. |
| LM2678SX-3.3/NOPB | 3.3 V fixed, 5 A, 8–40 V input, non-synchronous (external diode), no AEC-Q100 rating. | Higher peak efficiency loss due to diode conduction; larger solution size; unsuitable for under-hood environments. | Choose only for cost-sensitive industrial designs where thermal derating and automotive compliance are not required. |
Compared with TPS54240DGQR and LM2678SX-3.3/NOPB, the NCV8800SDW33R2G delivers guaranteed automotive reliability, integrated FETs for compactness, and lower quiescent current-making it the sole option qualified for production-grade vehicle body and infotainment systems.
Availability
NCV8800SDW33R2G is available at Aetrix Electronics and suitable for automotive infotainment systems, body control modules, and telematics units requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for NCV8800SDW33R2G 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 NCV8800SDW33R2G belongs to onsemi's automotive-qualified DC-DC converter portfolio, engineered specifically for robust, low-noise power delivery in safety-critical vehicle subsystems.
FAQ
What is the operating temperature range for the NCV8800SDW33R2G?
The NCV8800SDW33R2G is qualified to AEC-Q100 Grade 1, supporting continuous operation from −40 °C to +125 °C junction temperature. This range covers under-hood, dashboard, and trunk-mounted automotive applications without thermal derating. The device includes internal thermal shutdown that activates above +165 °C to protect against sustained overload conditions. All electrical specifications in the datasheet are guaranteed across this full range.
Does the NCV8800SDW33R2G require external compensation components?
No, the NCV8800SDW33R2G uses an internally compensated current-mode control loop, eliminating the need for external compensation networks. This simplifies design, reduces bill-of-materials count, and improves consistency across production units. The fixed 150 kHz switching frequency and integrated loop compensation are optimized for standard 10–22 µF ceramic or low-ESR electrolytic output capacitors commonly used in automotive power supplies.
Can the NCV8800SDW33R2G be used in non-automotive applications?
Yes, the NCV8800SDW33R2G can be used in industrial or medical applications requiring a rugged, high-input-voltage buck regulator-but its AEC-Q100 qualification, thermal design, and protection features are optimized for automotive environments. For non-automotive use, designers should verify that the 40 V absolute maximum input rating, hiccup-mode OCP behavior, and thermal pad layout meet their specific system requirements.
What is the purpose of the PGOOD pin on the NCV8800SDW33R2G?
The PGOOD pin on the NCV8800SDW33R2G is an open-drain output that asserts high when the regulated 3.3 V output is within ±7.5% of nominal (i.e., 3.05–3.55 V). It provides hardware-level power sequencing feedback to microcontrollers or PMICs, enabling safe startup of downstream logic before enabling clocks or peripherals. The pin remains low during startup, fault, or shutdown, and has built-in noise filtering to prevent false triggering.
How does the NCV8800SDW33R2G handle load dump transients?
The NCV8800SDW33R2G withstands load dump transients up to 40 V per ISO 7637-2 Pulse 5a, thanks to its 40 V absolute maximum input rating and internal input overvoltage clamp. During such events, the device continues regulating until input exceeds 40 V, then enters safe shutdown. Its integrated FETs and current-mode control maintain stability without external TVS devices-though system-level TVS protection is still recommended upstream for full compliance.
NCV8800SDW33R2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 200kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
NCV8800SDW33R2G FAQ
1.How can I place an order for NCV8800SDW33R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8800SDW33R2G 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 NCV8800SDW33R2G reliable?
The price and inventory of NCV8800SDW33R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8800SDW33R2G is usually 5 days.
3.What payment methods are accepted for NCV8800SDW33R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8800SDW33R2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8800SDW33R2G?
NCV8800SDW33R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8800SDW33R2G 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 NCV8800SDW33R2G?
For technical support, including NCV8800SDW33R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8800SDW33R2G requirements.
6.How does Aetrix verify that NCV8800SDW33R2G is sourced from the original manufacturer or authorized distributors?
All NCV8800SDW33R2G 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 NCV8800SDW33R2G meets industry standards.
7.What is the process for return or replacement of NCV8800SDW33R2G?
All NCV8800SDW33R2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8800SDW33R2G, 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 NCV8800SDW33R2G part is unused and in its original packaging.
Return procedure for NCV8800SDW33R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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