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onsemi NCV6323FELMTW18TBG
- Part No.:
- NCV6323FELMTW18TBG
- Manufacturer:
- onsemi
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
NCV6323FELMTW18TBG.pdf
- Description:
- IC REG BUCK 1.8V 1.6A 8WDFNW
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
NCV6323FELMTW18TBG from onsemi is a 3 MHz, 1.6 A synchronous buck converter with fixed 1.8 V output, optimized for automotive ADAS sub-systems powered from 2.8–5.5 V pre-regulator rails. It integrates high-side P-MOSFET (RON ≤ 170 mΩ at 3.3 V) and low-side N-MOSFET (RON ≤ 115 mΩ), delivers ±2% DC output voltage accuracy, and features Power Good (PG) monitoring and thermal shutdown at 150°C.
For engineers reviewing the NCV6323FELMTW18TBG datasheet, pinout, applications, or equivalent options, this page provides verified technical context, validated pin functions, confirmed automotive-grade operating conditions (−40°C to +125°C), and real-world design implications for space-constrained camera power rails.
Technical Context
The NCV6323FELMTW18TBG implements voltage-mode PWM control with fixed 3.0 MHz switching frequency, enabling compact 1.0 µH inductor and 10 µF output capacitor designs. Its integrated feedback network eliminates external resistor dividers, and internal compensation supports stable operation across 6.4–100 µF output capacitance ranges per version.
It uses synchronous rectification with dead-time control to prevent shoot-through, operates with UVLO rising threshold of 2.8 V (150 mV hysteresis), and provides open-drain PG output with 90% valid threshold and 2.5% hysteresis-critical for automotive system-level power sequencing and fault detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2% DC error over −40°C to +125°C; enables direct powering of 1.8 V image sensor cores without external feedback. |
| Max Output Current | 1.6 A at TA ≤ 85°C; supports peak loads in front/rear camera modules with minimal thermal derating on 2-layer PCBs. |
| Switching Frequency | 3.0 MHz (2.7–3.3 MHz range); allows use of 1.0 µH inductors <2.0 mm height, reducing solution footprint by >40% vs. 500 kHz converters. |
| Input Voltage Range | 2.8 V to 5.5 V; compatible with automotive 3.3 V or 5.0 V pre-regulated supplies, including post-LDO rails in telematics clusters. |
| Thermal Shutdown | 150°C threshold with 25°C hysteresis; protects against sustained overload in enclosed ADAS housings without external thermal sensors. |
| Power Good Accuracy | PG asserts high when VOUT ≥ 90% of nominal (1.62 V), with 2.5% hysteresis; ensures reliable system boot-up and brown-out detection. |
| Quiescent Current | 5.7 mA typical at no load (VOUT = 1.8 V); minimizes standby power in always-on camera systems. |
Pinout & Package
Housed in a wettable flank DFN-8 (2.0 × 2.0 mm, 0.5 mm pitch, 0.8 mm max height), the NCV6323FELMTW18TBG uses an exposed thermal pad (EPAD) soldered to AGND for enhanced thermal performance (θJB = 20°C/W measured).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PGND | Power Ground | High-current switch return path; requires local ground plane to minimize noise coupling into analog sections. |
| 2 SW | Switch Node | Drives inductor; must connect via short, wide copper trace to reduce EMI and voltage spikes during 3 MHz switching. |
| 3 AGND | Analog Ground | Reference for FB, AVIN, and internal error amp; connects to EPAD and system ground at single point to avoid ground loops. |
| 4 FB | Feedback Input | Direct connection to output rail near capacitor anode; critical for regulation accuracy-layout sensitivity demands shortest possible trace. |
| 5 EN | Enable Control | Active-high digital input (VEN_H ≥ 1.1 V); includes 5 µs internal filter to reject board-level noise in automotive environments. |
| 6 PG | Power Good Output | Open-drain signal; requires external pull-up to AVIN or system rail; indicates regulation status with 1.1 ms startup delay. |
| 7 AVIN | Analog Supply | Bias supply for control circuitry; bypassed with 1 µF ceramic cap to AGND to suppress high-frequency noise affecting regulation. |
| 8 PVIN | Power Supply Input | Main power input for MOSFET drivers; requires ≥10 µF ceramic capacitor placed adjacent to pin to handle 3 MHz ripple current. |
| 9 EPAD | Thermal Pad / AGND | Internally tied to AGND; must be soldered to solid ground plane for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Rectification | Integrated high-side P-MOSFET (170 mΩ max) and low-side N-MOSFET (115 mΩ max) eliminate external diode losses, enabling >90% efficiency at 1 A. |
| Integrated Compensation | Internal Type-II compensation network removes need for external RC components-reduces BOM count and layout risk in space-constrained modules. |
| AEC-Q100 Qualified | Qualified to Grade 1 (−40°C to +125°C) with PPAP capability; meets automotive reliability requirements for front camera, surround view, and blind spot systems. |
| Wettable Flank Package | DFN-8 with side-wettable leads enables automated optical inspection (AOI) of solder joints-critical for zero-defect manufacturing in ADAS production lines. |
| Soft-Start Timing | 420 µs typical soft-start time (TSS) prevents inrush current surges during camera module power-up, protecting upstream pre-regulators. |
Applications
| Front Camera Power Rail | Rear View Camera Module |
|---|---|
|
Use Scenario: Powers 1.8 V image sensor and ISP in automotive front-facing ADAS camera. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering clean, regulated 1.8 V at up to 1.6 A with fast transient response to sensor burst modes. Use Value: 3 MHz switching minimizes inductor size (<2.0 mm height), enabling ultra-thin camera housing; ±2% output accuracy ensures sensor ADC reference stability. |
Use Scenario: Supplies 1.8 V logic and interface circuits in rear-view backup camera with ambient temperature up to 105°C. IC Role / Device Role / Timing Role: Fixed-output buck converter with thermal shutdown and PG monitoring for fail-safe operation in high-temperature trunk environments. Use Value: 1.2 A continuous output at 105°C ambient meets sustained video streaming loads; PG signal enables MCU to detect power faults before image corruption. |
| Surround View Processing Unit | Automotive Telematics Cluster |
|
Use Scenario: Provides 1.8 V core voltage to multi-camera fusion processor in 360° surround view systems. IC Role / Device Role / Timing Role: Synchronous buck regulator with integrated MOSFETs and compensation, simplifying multi-rail power design across four camera inputs. Use Value: Wettable flank DFN-8 package supports AOI for zero-defect assembly; AEC-Q100 qualification ensures long-term reliability in vibration-prone vehicle mounting locations. |
Use Scenario: Powers 1.8 V display interface and CAN transceiver logic in connected vehicle infotainment clusters. IC Role / Device Role / Timing Role: Secondary regulator fed from 3.3 V pre-regulator, providing isolated, low-noise 1.8 V for timing-critical serial interfaces. Use Value: Low 5.7 mA quiescent current extends battery runtime in key-off monitoring mode; UVLO hysteresis prevents oscillation during cold-cranking events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4420AGL-AEC1-Z | 2.5–6.5 V input, 2 A output, 2.2 MHz switching, adjustable output (external resistors required) | Requires external feedback network; lacks integrated PG output; wider input range suits 12 V automotive systems directly | Choose when adjustable output or higher current is needed, but accept added BOM and layout complexity. |
| TPS6286418ARQYR | 2.7–6.5 V input, 4 A output, 3.4 MHz switching, fixed 1.8 V, integrated PG, QFN-12 package | Larger 2.5 × 3.0 mm package; higher current rating; not AEC-Q100 qualified (industrial grade only) | Choose for non-automotive industrial applications requiring higher current headroom and same 1.8 V fixed output. |
Compared with MPQ4420AGL-AEC1-Z, NCV6323FELMTW18TBG offers simpler implementation with integrated feedback and PG, while TP6286418ARQYR provides higher current but lacks automotive qualification-making NCV6323FELMTW18TBG optimal for cost-sensitive, space-constrained AEC-Q100-compliant camera rails.
Availability
NCV6323FELMTW18TBG is available at Aetrix Electronics and suitable for automotive ADAS camera modules, surround view systems, and telematics clusters requiring stable component supply, AEC-Q100 compliance, and high-volume manufacturability.
Supply support for NCV6323FELMTW18TBG 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 (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient technologies for automotive, industrial, cloud, and IoT applications.
The NCV6323F series is part of onsemi's automotive power management portfolio, designed specifically for high-reliability, space-constrained point-of-load conversion in ADAS and infotainment subsystems.
FAQ
What is the output voltage tolerance of the NCV6323FELMTW18TBG over temperature and load?
The NCV6323FELMTW18TBG maintains ±2% DC output voltage error across −40°C to +125°C junction temperature and 0–1 A load range. At 200 mA and 25°C, output is tightly specified at 1.773–1.827 V. Load regulation contributes ±0.5%/A, and line regulation adds ≤0.1% variation from 2.8 V to 5.5 V input-ensuring stable 1.8 V supply for precision image sensors.
Does the NCV6323FELMTW18TBG require external compensation components?
No, the NCV6323FELMTW18TBG integrates a complete Type-II compensation network internally. This eliminates external resistors and capacitors typically needed for loop stability, reducing BOM count and layout sensitivity-especially beneficial in compact camera modules where PCB area is constrained.
How does the Power Good (PG) pin behave during startup and fault conditions for the NCV6323FELMTW18TBG?
The NCV6323FELMTW18TBG PG pin is open-drain and pulls low when VOUT falls below 90% of nominal (1.62 V). At startup, it transitions high 1.1 ms after EN rises, once regulation is established. During normal operation, a high-to-low transition signals undervoltage; hysteresis (2.5%) prevents chatter during marginal conditions.
What thermal performance can be expected from the NCV6323FELMTW18TBG on a standard 2-layer PCB?
On a typical 2-layer demo board, the NCV6323FELMTW18TBG achieves θJA = 40°C/W. With its exposed thermal pad soldered to a solid AGND plane, it delivers 1.6 A at 85°C ambient and 1.2 A at 105°C ambient-sufficient for continuous operation in sealed ADAS camera enclosures without forced airflow.
Is the NCV6323FELMTW18TBG pin-compatible with other variants in the NCV6323F family?
Yes, all NCV6323F variants-including NCV6323FELMTW10TBG (1.0 V), NCV6323FELMTW11TBG (1.1 V), and NCV6323FELMTW33TBG (3.3 V)-share identical DFN-8 (2x2 mm) pinout and package. Only the internal feedback ratio differs; no PCB redesign is needed when changing output voltage versions.
NCV6323FELMTW18TBG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 1.6A
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 8-WDFNW (2x2)
NCV6323FELMTW18TBG FAQ
1.How can I place an order for NCV6323FELMTW18TBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV6323FELMTW18TBG 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 NCV6323FELMTW18TBG reliable?
The price and inventory of NCV6323FELMTW18TBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV6323FELMTW18TBG is usually 5 days.
3.What payment methods are accepted for NCV6323FELMTW18TBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV6323FELMTW18TBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV6323FELMTW18TBG?
NCV6323FELMTW18TBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV6323FELMTW18TBG 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 NCV6323FELMTW18TBG?
For technical support, including NCV6323FELMTW18TBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV6323FELMTW18TBG requirements.
6.How does Aetrix verify that NCV6323FELMTW18TBG is sourced from the original manufacturer or authorized distributors?
All NCV6323FELMTW18TBG 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 NCV6323FELMTW18TBG meets industry standards.
7.What is the process for return or replacement of NCV6323FELMTW18TBG?
All NCV6323FELMTW18TBG units undergo pre-shipment inspection (PSI). If there is an issue with NCV6323FELMTW18TBG, 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 NCV6323FELMTW18TBG part is unused and in its original packaging.
Return procedure for NCV6323FELMTW18TBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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