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onsemi NCP6343XFCCT1G
- Part No.:
- NCP6343XFCCT1G
- Manufacturer:
- onsemi
- Package:
- 15-UFBGA, WLCSP
- Datasheet:
-
NCP6343XFCCT1G.pdf
- Description:
- IC REG BUCK PROG 3A 15WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:7,698
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Product details
Overview
NCP6343XFCCT1G from onsemi is a synchronous buck DC-DC converter optimized for core voltage regulation in portable Li-ion–powered systems, delivering up to 3.0 A output current with I²C-programmable output voltage (0.6 V to 1.4 V in 6.25 mV steps), 3 MHz fixed-frequency switching, and integrated high-side/low-side MOSFETs (RONHS = 36 mΩ typ, RONLS = 19 mΩ typ) in a 1.99 × 1.34 mm WLCSP-15 package.
For engineers reviewing the NCP6343XFCCT1G datasheet, pinout, applications, or equivalent options, this device supports dynamic voltage scaling (DVS), thermal warning/shutdown (135°C/150°C), ultra-low off-mode current (0.8 µA), and transient load helper operation on shared rails - critical for smartphone and webtablet processor power delivery.
Technical Context
The NCP6343XFCCT1G implements voltage-mode control with fully integrated synchronous rectification and automatic PWM/PFM mode transition. Its modular 8-phase output stage enables configurable drive strength per load condition, while internal compensation eliminates external loop components.
It features an I²C interface (up to 3.4 MHz) supporting register-level configuration of output voltage, peak current limit (IPEAK[1:0] = 11 → 3.9 A), DVS ramp rate, thermal thresholds, and power-good behavior - all without requiring external resistors or timing capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 3.0 A max - supports high-performance mobile SoC core rails with margin for transient loads. |
| Input Voltage Range | 2.3 V to 5.5 V - compatible with single-cell Li-ion (2.7–4.2 V) and 5 V system rails. |
| Switching Frequency | 3.0 MHz ±10% - enables use of compact 470 nH inductors and 22 µF ceramic output capacitors. |
| Quiescent Current | 35 µA typ in PFM mode - extends battery life during light-load standby states. |
| Output Voltage Accuracy | ±1% in PWM mode, ±2% in auto mode - ensures stable core voltage under full load and line variation. |
| Off-Mode Current | 0.8 µA max - minimizes battery drain when system is powered down. |
| Thermal Shutdown | 150°C typical with 30°C hysteresis - protects IC during sustained overload or poor PCB thermal design. |
Pinout & Package
Package: 15-pin WLCSP (Wafer-Level Chip-Scale Package), 1.99 × 1.34 mm, 0.4 mm pitch, Case 567GB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVIN | Analog/Digital Supply Input | Must equal PVIN; powers internal analog/digital circuitry and requires local 1.0 µF decoupling. |
| AGND | Analog Ground Reference | Common ground for analog/digital modules; must connect to system ground at single point. |
| EN | Enable Control Input | Active-high digital enable; must not float; controls startup sequence and sleep/off modes. |
| SCL / SDA | I²C Clock & Bidirectional Data | Supports configuration, DVS, and interrupt reporting; internal pull-downs allow open-circuit if unused. |
| PVIN (A1/B1/C1, A2/B2) | Power Input / Switch Node | High-current input (A1/B1/C1) and switch outputs (A2/B2); require short, heavy copper traces and local 10 µF decoupling. |
| PGND (A3/B3/C3/C2, D1/E1) | Power Ground Return | Carries high-switching current; requires dedicated low-impedance ground plane connecting all PGND pins. |
| FB | Voltage Feedback Input | Connects directly to output capacitor positive terminal (not plane) for accurate regulation. |
Key Features
| Feature | Design Value |
|---|---|
| I²C Dynamic Voltage Scaling (DVS) | Smooth, software-controlled VOUT transitions (e.g., 6.25 mV/0.166 s ramp up) prevent processor glitches during frequency scaling. |
| Modular Output Stage | 8 independently configurable driver modules optimize efficiency across 2.0–3.0 A load range by enabling only needed phases. |
| Transient Load Helper Mode | Shares output rail with another DC-DC without sinking current - enables coordinated multi-rail response to CPU burst loads. |
| Ultra-Low Off-Mode Current | 0.8 µA max allows long-term battery retention in always-on mobile subsystems (e.g., modem, sensor hub). |
| Integrated Thermal Management | Three-tier monitoring (pre-warning at 105°C, warning at 135°C, shutdown at 150°C) enables proactive firmware throttling. |
Applications
| Smartphone Application | Webtablet Application |
|---|---|
|
Use Scenario: Powering application processor cores during burst-intensive tasks (e.g., camera capture, gaming). IC Role / Device Role / Timing Role: Primary core voltage regulator with DVS support synchronized to CPU DVFS states. Use Value: Delivers 3.0 A at 1.225 V with ±1% accuracy and 3 MHz switching - enabling compact layout and fast transient response (<50 mV deviation on 1.3 A step). |
Use Scenario: Supplying GPU and AI accelerator voltage domains in dual-SoC tablet platforms. IC Role / Device Role / Timing Role: Secondary regulated rail operating in transient load helper mode alongside main PMIC. Use Value: Shares 1.05 V rail with companion DC-DC; provides instantaneous current assist during GPU clock boosts without rail collapse. |
| Mobile Modem Subsystem | Always-On Sensor Hub |
|
Use Scenario: Regulating LTE/5G baseband processor voltage during RF transmission bursts. IC Role / Device Role / Timing Role: High-efficiency buck converter with forced PWM mode enabled for noise-sensitive RF sections. Use Value: Maintains 3 MHz fixed frequency and <35 µA quiescent current in PFM - minimizing EMI and extending talk time. |
Use Scenario: Powering ultra-low-power motion sensor fusion engine in sleep state. IC Role / Device Role / Timing Role: Standby regulator with 0.8 µA off-mode current and programmable thermal pre-warning. Use Value: Enables >1-month battery life on coin cell; thermal pre-warning (105°C) triggers early firmware mitigation before sensor drift occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62400DRVR | 2.0 A max output, 2.25 MHz switching, no I²C interface - uses external resistor feedback. | Lacks DVS and thermal interrupt reporting; suitable for fixed-voltage, cost-sensitive designs. | Select when I²C configurability and multi-threshold thermal management are not required. |
| RTQ2132BWGE | 3.5 A output, 2.5 MHz, I²C-compatible but no DVS ramp control or transient helper mode. | Higher current capability but no rail-sharing functionality; requires external compensation. | Prefer for higher-current standalone rails where dynamic voltage sequencing is unnecessary. |
Compared with TPS62400DRVR and RTQ2132BWGE, the NCP6343XFCCT1G uniquely combines 3.0 A capability, I²C-based DVS with controlled slew rates, and transient load helper operation - making it optimal for tightly coordinated multi-rail mobile SoC power architectures.
Availability
NCP6343XFCCT1G is available at Aetrix Electronics and suitable for smartphone, webtablet, and mobile modem applications requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for NCP6343XFCCT1G 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, with leadership in power management, analog, and sensor technologies.
The NCP6343XFCCT1G belongs to onsemi's high-frequency synchronous buck converter product line, designed specifically for space-constrained, battery-powered portable devices requiring precision voltage regulation and intelligent thermal/power management.
FAQ
What is the maximum output current supported by the NCP6343XFCCT1G?
The NCP6343XFCCT1G supports up to 3.0 A of continuous output current when configured with IPEAK[1:0] = 11 (3.9 A peak inductor current). This rating assumes proper PCB thermal design, 3.6 V input, and use of recommended 470 nH inductor and 22 µF output capacitors per the datasheet.
Does the NCP6343XFCCT1G support dynamic voltage scaling (DVS)?
Yes, the NCP6343XFCCT1G supports full DVS via its I²C interface. Output voltage can be reprogrammed in 6.25 mV steps from 0.6 V to 1.4 V, with configurable ramp rates (e.g., 6.25 mV/0.166 s for upward transitions) and forced PWM or auto-mode operation during scaling - ensuring glitch-free processor frequency changes.
What package type and dimensions does the NCP6343XFCCT1G use?
The NCP6343XFCCT1G uses a 15-pin WLCSP (Wafer-Level Chip-Scale Package) with dimensions of 1.99 mm × 1.34 mm and 0.4 mm pitch (Case 567GB). It is Pb-free and moisture sensitivity level (MSL) 1, suitable for standard SMT assembly without special baking requirements.
How does the NCP6343XFCCT1G manage thermal protection?
The NCP6343XFCCT1G implements three-tier thermal monitoring: pre-warning at 105°C, warning at 135°C, and shutdown at 150°C (typical), each generating I²C-accessible interrupts. Thermal shutdown includes 30°C hysteresis, and restart behavior (manual EN toggle vs. automatic) is configurable via the REARM bit in the LIMCONF register.
Can the NCP6343XFCCT1G operate as a transient load helper on a shared rail?
Yes, the NCP6343XFCCT1G is explicitly designed to share its output rail with another DC-DC converter and act as a transient load helper. It sources additional current during load transients without sinking current from the rail - enabling coordinated response in multi-converter mobile power architectures.
NCP6343XFCCT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 15-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 1.4V
- Current - Output:
- 3A
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 15-WLCSP (1.34x1.99)
NCP6343XFCCT1G FAQ
1.How can I place an order for NCP6343XFCCT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP6343XFCCT1G 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 NCP6343XFCCT1G reliable?
The price and inventory of NCP6343XFCCT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP6343XFCCT1G is usually 5 days.
3.What payment methods are accepted for NCP6343XFCCT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP6343XFCCT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP6343XFCCT1G?
NCP6343XFCCT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP6343XFCCT1G 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 NCP6343XFCCT1G?
For technical support, including NCP6343XFCCT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP6343XFCCT1G requirements.
6.How does Aetrix verify that NCP6343XFCCT1G is sourced from the original manufacturer or authorized distributors?
All NCP6343XFCCT1G 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 NCP6343XFCCT1G meets industry standards.
7.What is the process for return or replacement of NCP6343XFCCT1G?
All NCP6343XFCCT1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP6343XFCCT1G, 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 NCP6343XFCCT1G part is unused and in its original packaging.
Return procedure for NCP6343XFCCT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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