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onsemi NCV6323DMTAAWTBG
- Part No.:
- NCV6323DMTAAWTBG
- Manufacturer:
- onsemi
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
NCV6323DMTAAWTBG.pdf
- Description:
- IC REG BUCK ADJ 2A 8WDFNW
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
NCV6323DMTAAWTBG from onsemi is a synchronous buck converter optimized for sub-system power in portable electronics powered by single-cell Li-ion or triple-cell alkaline/NiCd/NiMH batteries. It delivers up to 2 A at externally adjustable output voltage (0.6 V to VIN), operates at 3 MHz switching frequency, features integrated high- and low-side MOSFETs (RON_H = 130 mΩ typ, RON_L = 100 mΩ typ), and includes Power Good output, soft-start, and active output discharge - used in smartphone core logic and camera sensor rails.
For engineers reviewing the NCV6323DMTAAWTBG datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage range (2.5–5.5 V), thermal shutdown threshold (170 °C), wettable flank WDFNW8 package compatibility, and support for ultra-thin (<0.8 mm) PCB designs with minimal external components.
Technical Context
The NCV6323DMTAAWTBG employs feedforward-controlled PWM regulation with fixed 3 MHz switching frequency, enabling compact 1 µH inductor and 10 µF ceramic capacitor designs. Its synchronous rectification uses complementary P- and N-MOSFETs with cycle-by-cycle current limiting (ILIMP = 2.8 A typ) and negative current protection (1 A).
It integrates analog and power supply domains (AVIN and PVIN pins), separates AGND and PGND for noise immunity, and implements input UVLO (2.4 V falling threshold, 100 mV hysteresis), enable logic with 270 mV hysteresis, and open-drain Power Good monitoring with 90% VFB threshold and 5% hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V - supports full discharge of single-cell Li-ion (2.7–4.2 V) and triple-cell alkaline (3.0–4.5 V) without external regulators. |
| Output Current | 2.0 A continuous - sufficient for ARM Cortex-A series SoC cores or multi-lane MIPI camera interfaces. |
| Switching Frequency | 3.0 MHz ±10% - enables use of 1.0 µH inductors and reduces EMI fundamental frequency above AM radio band. |
| Feedback Reference Voltage | 600 mV ±6 mV - sets output via resistor divider; allows precise 0.6 V to VIN adjustment with <±0.5%/A load regulation error. |
| Power Good Threshold | 90% of VFB (540 mV at 0.6 V ref) - provides reliable system reset signaling with 5% hysteresis to prevent chatter during brownout. |
| Thermal Shutdown | 170 °C typical - protects die under sustained overload or poor PCB thermal design; recovers at ~125 °C. |
| Package | WDFNW8, 2.0 × 2.0 × 0.75 mm, 0.5 mm pitch, wettable flanks - supports automated optical inspection (AOI) and improves solder joint reliability in automotive-grade assembly. |
Pinout & Package
NCV6323DMTAAWTBG is housed in an 8-pin WDFNW (Wettable Flank) package (Case 511CL), measuring 2.0 × 2.0 × 0.75 mm with 0.5 mm pitch and exposed thermal pad. The wettable flanks enable reliable solder joint inspection and enhance thermal conduction to PCB ground planes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - PGND | Power Ground | Main return path for high-current switch node; must be low-inductance connection to system ground plane. |
| 2 - SW | Switch Node | Drives inductor high-side; carries pulsed 2 A current; requires tight layout to minimize EMI and voltage spikes. |
| 3 - AGND | Analog Ground | Reference for feedback, error amplifier, and internal bias; isolated from PGND except at single-point star ground. |
| 4 - FB | Feedback Input | Senses output voltage via resistor divider; 600 mV reference enables accurate output programming and stability. |
| 5 - EN | Enable Input | Logic-level control (1.1 V high threshold); internal 10 nA pull-down allows direct connection to microcontroller GPIO. |
| 6 - PG | Power Good Output | Open-drain signal indicating regulated output; sinks 5 mA when low; left floating if unused. |
| 7 - AVIN | Analog Supply | Powers internal analog/digital circuitry; bypassed with ≥1 µF ceramic capacitor placed adjacent to pin. |
| 8 - PVIN | Power Input | High-current input rail; requires ≥10 µF ceramic capacitor with low ESL/ESR placed within 2 mm of pin. |
| Exposed Pad | Thermal & Electrical Ground | Internally unconnected but must be soldered to PCB ground plane for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Rectification | Integrated P- and N-MOSFETs (RON_H = 130 mΩ, RON_L = 100 mΩ) eliminate external diode losses, enabling >90% efficiency at 1 A load. |
| 3 MHz Fixed-Frequency PWM | Enables use of 1 µH inductors and 10 µF ceramic capacitors - reduces solution size by >40% vs. 1 MHz converters. |
| Active Output Discharge | Internal 500 Ω resistor discharges output capacitor when disabled - prevents residual voltage hold-up in battery-powered systems. |
| Power Good Monitoring | Open-drain PG pin asserts after soft-start completes and de-asserts within 8 µs if output drops below 90% VFB - supports sequenced power-down. |
| AEC-Q100 Qualified | Qualified to Grade 1 (−40 °C to +125 °C junction), PPAP-capable, and automotive site-controlled - suitable for infotainment and ADAS sub-rails. |
Applications
| Smartphone Application Processor Core Rail | Digital Camera Sensor Bias Supply |
|---|---|
|
Use Scenario: Powers ARM-based application processor core (e.g., Snapdragon 6xx series) requiring dynamically scaled 0.8–1.2 V at up to 2 A peak current. IC Role / Device Role / Timing Role: Primary point-of-load (POL) regulator delivering tightly regulated, low-noise DC supply with fast transient response. Use Value: 3 MHz operation minimizes inductor size and output ripple; soft-start prevents inrush into large SoC decoupling capacitance. |
Use Scenario: Supplies image sensor analog front-end (AFE) and digital interface (MIPI D-PHY) with stable 1.8 V or 2.8 V at ≤1.5 A. IC Role / Device Role / Timing Role: Dedicated low-noise, low-ripple power source with independent enable control for sensor power sequencing. Use Value: Wettable flank WDFNW8 package ensures AOI-compatible assembly; PG output signals sensor readiness to host processor. |
| Automotive Infotainment Display Backlight Driver | USB-Powered Portable Media Player SoC Rail |
|
Use Scenario: Generates 3.3 V for display timing controller and LVDS transmitter in automotive head unit displays. IC Role / Device Role / Timing Role: Secondary POL regulator supporting wide-input (2.5–5.5 V) operation across vehicle battery transients (cold crank, load dump). Use Value: AEC-Q100 qualification and 170 °C thermal shutdown ensure robustness; UVLO hysteresis prevents false turn-on during cranking. |
Use Scenario: Converts 5 V USB input to 1.1 V core voltage for media player SoC (e.g., Rockchip RK3328) with dynamic DVFS. IC Role / Device Role / Timing Role: High-efficiency step-down regulator operating in forced PWM mode to maintain regulation under variable load. Use Value: 5.7 mA quiescent current in PWM mode extends battery life; active discharge clears output before USB disconnect. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2143GQ-Z | 2.5–5.5 V input, 3 A output, 2 MHz switching, QFN-10 package (3×3 mm), no PG output. | Lacks Power Good signal and wettable flanks; higher pin count increases layout complexity. | Choose MP2143GQ-Z only if 3 A output and smaller footprint are critical and PG functionality is handled externally. |
| TPS62231DRYT | 2.05–6.5 V input, 600 mA output, 3.6 MHz switching, WSON-6 (2×2 mm), integrated compensation. | Lower current rating limits use to auxiliary rails; lacks active discharge and AEC-Q100 qualification. | Select TPS62231DRYT for low-power peripherals where footprint and simplicity outweigh automotive compliance needs. |
Compared with MP2143GQ-Z and TPS62231DRYT, the NCV6323DMTAAWTBG uniquely combines 2 A capability, AEC-Q100 qualification, wettable flank packaging, and integrated Power Good - making it optimal for space-constrained, safety-aware portable and automotive sub-systems requiring verified reliability and production-ready manufacturability.
Availability
NCV6323DMTAAWTBG is available at Aetrix Electronics and suitable for smartphone SoC core rails, automotive infotainment displays, digital camera sensor supplies, and USB-powered portable media players requiring stable component supply across extended product lifecycles.
Supply support for NCV6323DMTAAWTBG 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 specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NCV6323DMTAAWTBG belongs to onsemi's automotive-qualified DC-DC converter portfolio, designed specifically for high-density, low-profile power delivery in battery-powered portable and automotive infotainment subsystems.
FAQ
What is the maximum output current capability of the NCV6323DMTAAWTBG?
The NCV6323DMTAAWTBG delivers up to 2.0 A continuous output current under recommended operating conditions (VIN = 3.6 V, TJ ≤ 125 °C). Peak current limit is 2.8 A typical, with cycle-by-cycle protection. Actual achievable current depends on input voltage, output voltage, PCB thermal design, and inductor saturation rating - derating applies above 85 °C ambient.
Does the NCV6323DMTAAWTBG support adjustable output voltage, and how is it set?
Yes, the NCV6323DMTAAWTBG supports externally adjustable output voltage from 0.6 V to VIN using a resistor divider connected between VOUT, FB, and AGND. With a 600 mV internal reference, setting R1 = 220 kΩ and R2 = 110 kΩ yields 1.8 V output. Cfb (typically 15 pF) is added between FB and VOUT to optimize transient response and loop stability.
What is the purpose of the exposed thermal pad on the NCV6323DMTAAWTBG package?
The exposed pad on the NCV6323DMTAAWTBG is electrically unconnected but thermally critical: it must be soldered to a PCB ground plane to dissipate heat and reduce junction temperature. Thermal resistance junction-to-board (RJB) is 30 °C/W with proper pad layout - omitting this connection risks thermal shutdown at <1.2 A load under worst-case conditions.
How does the Power Good (PG) pin function on the NCV6323DMTAAWTBG?
The PG pin on the NCV6323DMTAAWTBG is an open-drain output that goes high-impedance when output voltage reaches ≥90% of target (e.g., 540 mV for 0.6 V ref) and remains valid for ≥5 µs. It pulls low if output falls below 87% VFB. No external pull-up is required unless interfacing with 3.3 V logic; a 100 kΩ pull-up to AVIN suffices for most microcontrollers.
Is the NCV6323DMTAAWTBG suitable for automotive applications?
Yes, the NCV6323DMTAAWTBG is AEC-Q100 qualified (Grade 1, −40 °C to +125 °C), PPAP-capable, and manufactured under automotive-specific process controls. Its wettable flank WDFNW8 package supports automated optical inspection, and features like 170 °C thermal shutdown, UVLO hysteresis, and Power Good output meet functional safety requirements for infotainment and ADAS sub-systems.
NCV6323DMTAAWTBG 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:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 2A
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 8-WDFNW (2x2)
NCV6323DMTAAWTBG FAQ
1.How can I place an order for NCV6323DMTAAWTBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV6323DMTAAWTBG 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 NCV6323DMTAAWTBG reliable?
The price and inventory of NCV6323DMTAAWTBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV6323DMTAAWTBG is usually 5 days.
3.What payment methods are accepted for NCV6323DMTAAWTBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV6323DMTAAWTBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV6323DMTAAWTBG?
NCV6323DMTAAWTBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV6323DMTAAWTBG 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 NCV6323DMTAAWTBG?
For technical support, including NCV6323DMTAAWTBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV6323DMTAAWTBG requirements.
6.How does Aetrix verify that NCV6323DMTAAWTBG is sourced from the original manufacturer or authorized distributors?
All NCV6323DMTAAWTBG 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 NCV6323DMTAAWTBG meets industry standards.
7.What is the process for return or replacement of NCV6323DMTAAWTBG?
All NCV6323DMTAAWTBG units undergo pre-shipment inspection (PSI). If there is an issue with NCV6323DMTAAWTBG, 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 NCV6323DMTAAWTBG part is unused and in its original packaging.
Return procedure for NCV6323DMTAAWTBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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