My Inquiry
My Account
onsemi NCV6323FELMTW33TBG
- Part No.:
- NCV6323FELMTW33TBG
- Manufacturer:
- onsemi
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
NCV6323FELMTW33TBG.pdf
- Description:
- IC REG BUCK 3.3V 1.6A 8WDFNW
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCV6323FELMTW33TBG from onsemi is a 3 MHz, 1.6 A synchronous buck converter with fixed 3.3 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 = 90–200 mΩ) and low-side N-MOSFET (RON = 60–150 mΩ), delivers ±2% DC output voltage accuracy, and features Power Good (PG) open-drain monitoring and thermal shutdown at 150°C.
For engineers reviewing the NCV6323FELMTW33TBG datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, wettable flank DFN8 (2×2 mm, 0.5 mm pitch) package, 3 MHz fixed-frequency PWM operation, integrated compensation, and support for point-of-load regulation in space-constrained automotive camera modules.
Technical Context
The NCV6323FELMTW33TBG implements voltage-mode PWM control with a fixed 3 MHz switching frequency and internal dead-time management to prevent shoot-through between its integrated high-side P-MOSFET and low-side N-MOSFET. Its feedback loop uses an internally compensated network tied to the FB pin, eliminating external compensation components.
It operates across 2.8–5.5 V input range with UVLO rising threshold at 2.8 V (150 mV hysteresis), supports enable-controlled sequencing via EN pin (1.1 V logic-high threshold), and provides PG status with 90% nominal VOUT detection threshold and 2.5% hysteresis - all while maintaining ≤±0.5%/A load regulation and ≤±0.5% line regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% DC accuracy - eliminates external resistor divider and ensures stable rail for automotive SoCs and image sensors. |
| Max Output Current | 1.6 A at TA ≤ 85°C - sufficient for front/rear camera ISPs and radar pre-amplifiers without external heatsinking. |
| Switching Frequency | 3.0 MHz (2.7–3.3 MHz range) - enables use of ≤1.0 µH inductors and compact 10 µF ceramic output capacitors. |
| Input Voltage Range | 2.8 V to 5.5 V - compatible with automotive 3.3 V and 5.0 V pre-regulated domains, including battery-backed ADAS subsystems. |
| Thermal Protection | 150°C junction shutdown with 25°C hysteresis - prevents irreversible damage during sustained overload or poor PCB thermal design. |
| Power Good Output | Open-drain PG with 90% VOUT detection and 2.5% hysteresis - provides reliable system-level power sequencing and fault reporting. |
| Quiescent Current | 7.8 mA typical at no load, 3.3 V output - minimizes standby power loss in always-on ADAS vision modules. |
Pinout & Package
The NCV6323FELMTW33TBG is housed in a wettable flank DFN8 package (2.0 × 2.0 mm, 0.5 mm pitch, max 0.8 mm thickness, case 511CL), with exposed thermal pad (EPAD) internally connected to AGND and requiring soldering to PCB ground plane for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: PGND | Power Ground | High-current return path for switch node; must connect to local low-impedance ground plane to suppress noise and prevent voltage spikes. |
| 2: SW | Switch Node | Drives external inductor; requires short, wide copper traces to minimize parasitic inductance and EMI generation. |
| 3: AGND | Analog Ground | Reference for internal error amplifier and bias circuitry; connects to system ground at single point to avoid ground loops. |
| 4: FB | Feedback Input | Direct connection to output capacitor's positive terminal enables precise regulation; sensitive to noise - routing must avoid SW and PGND paths. |
| 5: EN | Enable Input | Logic-controlled startup (≥1.1 V = active); includes 4–8 µs digital filter to reject noise-induced false triggering. |
| 6: PG | Power Good Output | Open-drain signal indicating VOUT ≥90% of target; requires external pull-up for MCU reset or sequencing logic. |
| 7: AVIN | Analog Supply | Bias supply for internal analog blocks; bypass with 1 µF ceramic capacitor close to pin for stability. |
| 8: PVIN | Power Supply | Main input for power switches; requires ≥10 µF ceramic capacitor placed adjacent to pin with low-ESR layout. |
| 9: EPAD | Exposed Thermal Pad | Internally tied to AGND; must be soldered to solid PCB ground plane to achieve 43°C/W junction-to-board thermal resistance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 1 (−40°C to +125°C TJ) - validated for automotive safety-critical ADAS applications including front camera and surround-view systems. |
| Synchronous Rectification | Integrated P-MOSFET + N-MOSFET pair - eliminates external Schottky diode, improves full-load efficiency by ≥8% vs. asynchronous designs. |
| Integrated Compensation | Internal Type-II compensation network - removes need for external RC components, reducing BOM count and layout sensitivity. |
| Soft Start | 0.42 ms typical ramp time (NCV6323FE variant) - limits inrush current during power-up to protect input capacitors and upstream regulators. |
| Wettable Flank Package | DFN8 with side-wettable leads - enables automated optical inspection (AOI) of solder joints for high-reliability automotive manufacturing. |
Applications
| Front Camera Power Supply | Rear View Camera Module |
|---|---|
Use Scenario: Powers CMOS image sensor and ISP in automotive front-facing ADAS camera operating from 5 V pre-regulator rail. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering clean, regulated 3.3 V at up to 1.2 A continuous load. Use Value: 3 MHz switching enables <1.0 µH inductor and 10 µF output capacitance - critical for ultra-thin camera housing mechanical constraints. |
Use Scenario: Supplies 3.3 V rail to rear-view camera SoC and video encoder in parking assist systems. IC Role / Device Role / Timing Role: Fixed-output buck converter with PG monitoring for system-level power validation and fault logging. Use Value: ±2% output accuracy and <±0.5%/A load regulation ensure consistent sensor biasing and ADC reference stability across temperature. |
| Blind Spot Detection Radar | Automotive Telematics Cluster |
Use Scenario: Provides 3.3 V supply to low-power radar transceiver ICs in side-mirror mounted blind spot monitors. IC Role / Device Role / Timing Role: Compact, thermally robust DC-DC stage supporting intermittent radar burst operation with fast transient response. Use Value: 150°C thermal shutdown and AEC-Q100 qualification ensure reliability in high-ambient under-hood environments. |
Use Scenario: Powers display interface controller and CAN transceiver in digital instrument cluster with strict EMC requirements. IC Role / Device Role / Timing Role: Low-noise, fixed-frequency buck converter minimizing conducted EMI in shared 5 V domain. Use Value: Integrated MOSFETs and 3 MHz operation reduce switching harmonics above 100 MHz - easing CISPR 25 Class 5 compliance. |
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 | 2.5–5.5 V input, 2 A, 2.2 MHz, adjustable output; requires external feedback resistors and compensation. | Supports multiple output voltages but increases BOM count and layout complexity; lacks integrated PG output. | Choose when flexible output voltage or higher current is required, and board space allows for external components. |
| TPS6286418ARQYR | 2.7–6 V input, 3 A, 4 MHz, 1.8 V fixed output; pin-compatible package but different pinout and no AEC-Q100 rating. | Higher current and frequency, but not automotive-qualified; PG function implemented differently (active-high push-pull). | Consider only for non-automotive industrial or consumer applications where AEC-Q100 is not mandated. |
Compared with MPQ4420AGL-AEC1-Z and TPS6286418ARQYR, the NCV6323FELMTW33TBG offers tighter integration (fixed 3.3 V, no external resistors, integrated PG), smaller footprint (2×2 mm), and guaranteed automotive qualification - making it optimal for cost-sensitive, space-constrained ADAS camera modules requiring zero-compromise reliability.
Availability
NCV6323FELMTW33TBG is available at Aetrix Electronics and suitable for automotive ADAS camera modules, telematics clusters, and blind spot detection systems requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for NCV6323FELMTW33TBG 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 electronics for automotive, industrial, cloud, and IoT applications, with leadership in power management and sensing technologies.
The NCV6323F series belongs to onsemi's automotive-grade DC-DC converter product line, designed specifically for space-constrained, high-reliability point-of-load regulation in ADAS cameras, radar, and infotainment systems.
FAQ
What is the output voltage tolerance of the NCV6323FELMTW33TBG?
The NCV6323FELMTW33TBG has a fixed 3.3 V output with ±2% DC voltage error over −40°C to +125°C junction temperature, 2.8 V ≤ VIN ≤ 5.5 V, and 0–1 A load. This specification is verified per onsemi's Electrical Characteristics table and applies to the NCV6323F-33 variant encoded in the full part number NCV6323FELMTW33TBG.
Does the NCV6323FELMTW33TBG require external compensation components?
No, the NCV6323FELMTW33TBG integrates a complete Type-II compensation network. The FB pin connects directly to the output rail with no external RC components needed - simplifying design, reducing BOM count, and improving layout robustness compared to adjustable buck controllers.
What is the thermal performance of the NCV6323FELMTW33TBG in standard PCB layout?
In a typical 4-layer demo board layout, the NCV6323FELMTW33TBG achieves 40°C/W junction-to-ambient thermal resistance (θJA). With its exposed thermal pad (EPAD) soldered to a solid ground plane, it sustains 1.6 A output current at 85°C ambient and derates to 1.2 A at 105°C ambient - values confirmed in the Thermal Information table of the datasheet.
How does the Power Good (PG) pin of the NCV6323FELMTW33TBG behave during startup?
The PG pin of the NCV6323FELMTW33TBG remains low until VOUT reaches 90% of 3.3 V, then transitions high after a 1.1 ms delay (TDPGH1). During shutdown, PG goes low within 4 µs (TDPGL1) after EN falls. Its open-drain structure requires an external pull-up resistor for proper logic-level signaling to host microcontrollers.
Is the NCV6323FELMTW33TBG pin-compatible with other variants in the NCV6323F family?
Yes, all NCV6323F variants - including NCV6323FELMTW10TBG, NCV6323FELMTW11TBG, NCV6323FELMTW12TBG, NCV6323FELMTW18TBG, and NCV6323FELMTW33TBG - share identical pinout, package (DFN8 2×2 mm), and footprint. Only the fixed output voltage differs between variants; no PCB redesign is needed when selecting alternate output versions.
NCV6323FELMTW33TBG 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):
- 3.3V
- 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)
NCV6323FELMTW33TBG FAQ
1.How can I place an order for NCV6323FELMTW33TBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV6323FELMTW33TBG 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 NCV6323FELMTW33TBG reliable?
The price and inventory of NCV6323FELMTW33TBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV6323FELMTW33TBG is usually 5 days.
3.What payment methods are accepted for NCV6323FELMTW33TBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV6323FELMTW33TBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV6323FELMTW33TBG?
NCV6323FELMTW33TBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV6323FELMTW33TBG 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 NCV6323FELMTW33TBG?
For technical support, including NCV6323FELMTW33TBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV6323FELMTW33TBG requirements.
6.How does Aetrix verify that NCV6323FELMTW33TBG is sourced from the original manufacturer or authorized distributors?
All NCV6323FELMTW33TBG 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 NCV6323FELMTW33TBG meets industry standards.
7.What is the process for return or replacement of NCV6323FELMTW33TBG?
All NCV6323FELMTW33TBG units undergo pre-shipment inspection (PSI). If there is an issue with NCV6323FELMTW33TBG, 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 NCV6323FELMTW33TBG part is unused and in its original packaging.
Return procedure for NCV6323FELMTW33TBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCV6323FELMTW33TBG Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
