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onsemi NCP6335FFCT2G
- Part No.:
- NCP6335FFCT2G
- Manufacturer:
- onsemi
- Package:
- 20-UFBGA, WLCSP
- Datasheet:
-
NCP6335FFCT2G.pdf
- Description:
- IC REG BUCK PROG 4A 20WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
NCP6335FFCT2G from onsemi is a synchronous step-down DC-DC converter optimized for core power delivery in portable Li-ion–powered systems, delivering up to 4.0 A output current with I²C-programmable output voltage (0.6 V to 1.4 V in 6.25 mV steps), 3 MHz fixed-frequency operation, and transient load helper capability when sharing an output rail with another DC-DC converter.
For engineers reviewing the NCP6335FFCT2G datasheet, pinout, applications, or equivalent options, key selection considerations include its modular driver architecture for current scalability, PFM/PWM auto-transition for efficiency across load range, thermal warning/interrupt signaling, active output discharge control, and WLCSP-20 package integration for ultra-compact smartphone and webtablet power rails.
Technical Context
The NCP6335FFCT2G implements voltage-mode control with integrated high-side (P-MOSFET, RONHS = 45 mΩ typ) and low-side (N-MOSFET, RONLS = 22 mΩ typ) synchronous switches, eliminating external diodes or discrete FETs. Its feedback loop uses an internal resistor divider and error amplifier - no external compensation required.
It supports three operating modes: auto PWM/PFM (for >70% efficiency at 10 mA load), forced PWM (for ripple-sensitive loads), and sleep/off states controlled via EN and VSEL pins or I²C registers. Dynamic voltage scaling (DVS) enables smooth 6.25 mV/step transitions between voltage setpoints under I²C or pin-level control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 4.0 A - configurable via IPEAK[1..0] register bits to match inductor saturation limits (3.4 A to 5.0 A peak) |
| Input Voltage Range | 2.3 V to 5.5 V - supports single-cell Li-ion (2.7–4.2 V) and 3-cell alkaline/NiMH (3.6–4.5 V) battery inputs |
| Output Voltage Range | 0.6 V to 1.4 V in 6.25 mV steps - programmable via I²C PROGVSEL registers or VSEL pin selection between two preloaded configurations |
| Switching Frequency | 3.0 MHz ±5% - enables use of compact 470 nH inductors and 2×22 µF ceramic output capacitors |
| Quiescent Current | 35 µA in PFM mode - sustains >90% efficiency at light loads (e.g., 10 mA), critical for standby power in mobile SoCs |
| Thermal Protection | 150°C shutdown with 30°C hysteresis - plus 135°C warning and 105°C pre-warning thresholds signaled via INTB interrupt |
| Package | WLCSP-20 (2.0 × 1.6 mm, 0.4 mm pitch) - ultra-low-profile chip-scale package for space-constrained mobile PCBs |
Pinout & Package
Package: Wafer-Level Chip-Scale Package (WLCSP-20), Case 568AG, 2.0 mm × 1.6 mm footprint, 0.4 mm ball pitch, Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVIN | Analog/Digital Supply Input | Provides bias for analog/digital circuitry; must be decoupled with 1.0 µF ceramic capacitor near device |
| AGND | Analog Ground Reference | Common return for analog blocks; requires star-point connection to PGND to minimize noise coupling |
| EN | Enable Control Input | Active-high digital enable with internal pull-down; initiates power-up sequence on rising edge |
| VSEL | Configuration Select Input | Selects between PROGVSEL0/PROGVSEL1 register sets for dual-voltage DVS; internal pull-down |
| SCL / SDA | I²C Interface Lines | Support up to 3.4 MHz clock; enable register access for dynamic voltage scaling, module enable, and thermal monitoring |
| PGND (×8 pins) | Power Ground Return | High-current return path for switching node; requires local ground plane connecting all eight PGND balls |
| PVIN (×3 pins) | Power Input Supply | High-current input for switcher; must be decoupled with 4.7 µF ceramic capacitor placed adjacent to pins |
| SW (×4 pins) | Switch Node Output | Drives external 470 nH inductor; all four SW pins carry equal phase current and require short, wide copper traces |
| FB | Feedback Voltage Input | Connects directly to output capacitor positive terminal (not plane) for accurate regulation; no external resistors needed |
| PG / INTB | Open-Drain Status Outputs | PG signals valid output (90% nominal VOUT); INTB flags thermal warnings, DVS completion, or fault events |
Key Features
| Feature | Design Value |
|---|---|
| Modular Output Stage | Nine parallel driver modules individually enabled/disabled via MODULE register - scales gate drive strength to match load, reducing switching losses at partial load |
| Transient Load Helper Mode | Shares output rail with primary DC-DC without sinking current - provides instantaneous current assist during processor burst loads while avoiding rail collapse |
| I²C-Controlled Dynamic Voltage Scaling | DVS ramp rates configurable (6.25 mV/0.166 s up, 6.25 mV/2.666 s down); eliminates software-controlled GPIO toggling latency via VSEL pin bypass |
| Programmable Peak Current Limit | IPEAK[1..0] bits set inductor peak current from 3.4 A to 5.0 A - protects against saturation in height-constrained mobile inductors |
| Active Output Discharge | DISCHG bit in PGOOD register enables internal NMOS discharge path - ensures safe rail discharge within 100 µs after shutdown |
Applications
| Smartphone Application Processor Core Rail | Webtablet SoC DVFS Power Domain |
|---|---|
Use Scenario: Supplies CPU/GPU cores in multi-core ARM-based smartphones requiring rapid voltage transitions between performance and idle states. IC Role / Device Role / Timing Role: Primary core supply with DVS support; delivers 4.0 A peak current during burst loads while maintaining <±1% VOUT accuracy across 2.3–5.5 V input range. Use Value: Enables sub-1 ms voltage transitions and maintains >85% efficiency at 100 mA load, extending battery life during mixed-use patterns. |
Use Scenario: Powers application processor subsystems in 7–10 inch webtablets where board area and thermal density constrain power solution size. IC Role / Device Role / Timing Role: Secondary buck regulator operating as transient load helper alongside main PMIC; shares 1.1 V rail to absorb sudden 1.2 A load steps. Use Value: Reduces output voltage deviation to ±40 mV during 100 ns load transients - prevents SoC brownouts during camera/video processing bursts. |
| Portable Medical Imaging Sensor Module | Industrial Handheld Barcode Scanner |
Use Scenario: Powers high-speed ADC and FPGA logic in battery-operated ultrasound sensor modules requiring clean, stable 1.2 V supply. IC Role / Device Role / Timing Role: Low-noise core supply using forced PWM mode; leverages 3 MHz switching to push ripple energy beyond sensitive analog bandwidth. Use Value: Achieves <10 mVpp ripple in PWM mode and integrates thermal pre-warning (105°C) to prevent calibration drift during extended imaging sessions. |
Use Scenario: Delivers regulated 0.9 V to ARM Cortex-M7 MCU in ruggedized handheld scanners exposed to wide ambient temperature swings (−40°C to +85°C). IC Role / Device Role / Timing Role: Standalone buck converter with UVLO (2.3 V) and thermal shutdown (150°C); operates across full industrial temperature range without derating. Use Value: Maintains ±1% output accuracy over temperature and load, ensuring reliable flash programming and real-time decoding even at battery EOL (2.7 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62480RTWR | 4.5 A output, 2.5–5.5 V input, 0.6–1.8 V output; 2.4 MHz switching; QFN-16 package (3.0 × 3.0 mm) | Larger footprint and higher minimum output voltage limit; lacks transient load helper functionality and thermal pre-warning | Choose for higher current headroom and simpler layout where board space permits larger package and DVS flexibility is secondary |
| MP2143GQZ-P | 3.5 A output, 2.7–5.5 V input, 0.6–1.4 V output; 3 MHz switching; QFN-14 (2.5 × 3.0 mm); no I²C interface | No DVS, no thermal interrupts, no modular driver scaling - relies on external resistive feedback and fixed PWM/PFM behavior | Choose for cost-sensitive designs where register control, thermal intelligence, and rail-sharing capability are not required |
Compared with TPS62480RTWR and MP2143GQZ-P, the NCP6335FFCT2G uniquely combines ultra-compact WLCSP packaging, I²C-configurable DVS with dual-register voltage sets, and dedicated transient load helper operation - making it optimal for space-constrained, thermally aware mobile SoC power domains requiring coordinated voltage scaling.
Availability
NCP6335FFCT2G is available at Aetrix Electronics and suitable for smartphone core power, webtablet SoC DVFS, and portable medical imaging sensor applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for NCP6335FFCT2G 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 (Nasdaq: ON) is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP6335FFCT2G belongs to onsemi's high-efficiency DC-DC converter product line, engineered specifically for ultra-thin portable electronics requiring minimal PCB area, precise dynamic voltage scaling, and robust thermal management in battery-powered environments.
FAQ
What is the maximum output current capability of the NCP6335FFCT2G?
The NCP6335FFCT2G delivers up to 4.0 A continuous output current, configurable via the IPEAK[1..0] bits in the LIMCONF register. These bits set inductor peak current limits from 3.4 A (for 2.5 A output) to 5.0 A (for 4.0 A output), allowing optimization for specific inductor saturation ratings and thermal constraints in the final design.
Does the NCP6335FFCT2G support dynamic voltage scaling (DVS)?
Yes, the NCP6335FFCT2G supports hardware-accelerated DVS through both I²C register writes and direct VSEL pin toggling. Voltage transitions occur in precise 6.25 mV steps, with configurable ramp rates (e.g., 6.25 mV/0.166 s for upward transitions). The VSEL pin method bypasses I²C latency, enabling fastest possible voltage changes for processor performance state shifts.
How does the NCP6335FFCT2G operate as a transient load helper?
The NCP6335FFCT2G functions as a transient load helper by sharing the same output rail with another DC-DC converter and sourcing instantaneous current during load transients - without sinking current or interfering with the primary regulator's regulation. This prevents rail collapse during processor burst loads, with measured response limiting output deviation to ±40 mV for 1.2 A steps.
What package type and dimensions does the NCP6335FFCT2G use?
The NCP6335FFCT2G uses a Wafer-Level Chip-Scale Package (WLCSP-20), designated Case 568AG, measuring 2.0 mm × 1.6 mm with 0.4 mm ball pitch. It features 20 solder balls arranged in a 5×4 grid (A–E rows, 1–4 columns), including multiple PVIN, SW, and PGND connections to handle high current density in minimal board area.
What thermal protection features are integrated into the NCP6335FFCT2G?
The NCP6335FFCT2G integrates three-tier thermal management: a 105°C pre-warning threshold, 135°C thermal warning threshold, and 150°C thermal shutdown (TSD) with 30°C hysteresis. All thresholds generate interrupt signals on the INTB pin, enabling host processors to initiate thermal throttling or system-level cooling before reaching critical junction temperatures.
NCP6335FFCT2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 20-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:
- 4A
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-WLCSP (1.62x2.02)
NCP6335FFCT2G FAQ
1.How can I place an order for NCP6335FFCT2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP6335FFCT2G 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 NCP6335FFCT2G reliable?
The price and inventory of NCP6335FFCT2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP6335FFCT2G is usually 5 days.
3.What payment methods are accepted for NCP6335FFCT2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP6335FFCT2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP6335FFCT2G?
NCP6335FFCT2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP6335FFCT2G 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 NCP6335FFCT2G?
For technical support, including NCP6335FFCT2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP6335FFCT2G requirements.
6.How does Aetrix verify that NCP6335FFCT2G is sourced from the original manufacturer or authorized distributors?
All NCP6335FFCT2G 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 NCP6335FFCT2G meets industry standards.
7.What is the process for return or replacement of NCP6335FFCT2G?
All NCP6335FFCT2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP6335FFCT2G, 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 NCP6335FFCT2G part is unused and in its original packaging.
Return procedure for NCP6335FFCT2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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