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onsemi FAN53600AUC33X
- Part No.:
- FAN53600AUC33X
- Manufacturer:
- onsemi
- Package:
- 6-UFBGA, WLCSP
- Datasheet:
-
FAN53600AUC33X.pdf
- Description:
- IC REG BUCK 3.3V 600MA 6WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:6,200
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Product details
Overview
FAN53600AUC33X from ON Semiconductor is a 3 MHz, 600 mA synchronous step-down DC-DC regulator in WLCSP-6 package, delivering fixed 3.3 V output from 2.3–5.5 V input. It features 26 µA typical quiescent current, internal soft-start, and selectable PFM/PWM operation via MODE pin-designed for power management in compact mobile applications such as WiFi data cards and ultra-portable PCs.
For engineers reviewing the FAN53600AUC33X datasheet, pinout, applications, or equivalent options, key selection criteria include its 3.3 V fixed output, 600 mA capability, 3 MHz switching frequency, WLCSP-6 footprint, and support for external clock synchronization and active discharge.
Technical Context
FAN53600AUC33X employs a proprietary non-linear PWM modulator with synchronous rectification to achieve up to 97% peak efficiency and fast load transient response. Its control architecture maintains stable 3 MHz switching across wide VIN (2.3–5.5 V) and IOUT (0–600 mA) ranges while supporting seamless PFM-to-PWM transition.
The device integrates UVLO (2.27 V threshold), thermal shutdown (150°C), overcurrent protection with 16-cycle fault latching, and a dedicated MODE pin enabling forced PWM mode or external clock synchronization at 1.3–1.7 MHz (doubling to 2.6–3.4 MHz). Internal soft-start enforces 50 mV/µs then 12.5 mV/µs output ramp-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±3.0% over 0–600 mA load and –40°C to +85°C ambient. |
| Max Output Current | 600 mA continuous; peak current limit 900–1250 mA ensures robust startup and transient handling. |
| Switching Frequency | 3.0 MHz nominal; supports external sync up to 1.7 MHz on MODE pin for EMI reduction. |
| Quiescent Current | 26 µA typical in PFM mode-enables >100-hour battery life in always-on IoT sensors. |
| Input Voltage Range | 2.3 V to 5.5 V-compatible with single-cell Li-ion, Li-poly, and 3.3 V/5 V system rails. |
| Package | WLCSP-6, 0.4 mm pitch, 1.16 × 0.86 mm footprint-optimized for space-constrained mobile PCBs. |
| Thermal Protection | Thermal shutdown at 150°C with 15°C hysteresis prevents damage during sustained overload. |
Pinout & Package
Package: Wafer-Level Chip-Scale Package (WLCSP-6), 0.4 mm ball pitch, 1.16 mm × 0.86 mm body, 586 µm typical height. Land pattern uses NSMD pads per JEDEC MO-220 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | MODE | Logic-controlled mode select: high = forced PWM; low = auto PFM/PWM; also accepts sync clock input. |
| B1 | SW | Switch node connecting to external 1 µH inductor; carries high di/dt switching current. |
| C1 | FB | Feedback input tied to output via resistor divider (not used for fixed-VOUT variants like FAN53600AUC33X). |
| C2 | GND | Power and signal ground reference; must be low-inductance connection to minimize noise and EMI. |
| B2 | EN | Enable input: <0.4 V = shutdown (<1 µA IQ); >1.2 V = active; includes internal pull-down. |
| A2 | VIN | Main input supply (2.3–5.5 V); requires local 2.2 µF ceramic capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 26 µA typical in PFM mode enables multi-week battery runtime in always-on wearable sensors. |
| 3 MHz fixed-frequency operation | Enables use of tiny 1 µH inductors and 10 µF ceramic output capacitors-reducing solution size by >40% vs. 1 MHz regulators. |
| Internal soft-start | Controlled 180–300 µs output ramp prevents inrush current and avoids false triggering of downstream undervoltage monitors. |
| Active output discharge | 230 Ω internal discharge path (enabled when EN = GND) ensures rapid VOUT decay-critical for sequencing in multi-rail systems. |
| Robust protection suite | Includes UVLO (2.27 V), thermal shutdown (150°C), and cycle-by-cycle overcurrent limiting with automatic 1.3 ms fault recovery. |
Applications
| WiFi Data Card Power | Tablet Core Logic Supply |
|---|---|
Use Scenario: Powers baseband processor and RF transceiver in mini-PCIe WiFi 6 modules operating from single-cell Li-ion (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary 3.3 V buck regulator supplying core logic voltage with tight regulation under dynamic 10–600 mA load steps. Use Value: 97% peak efficiency and <10 µs load transient recovery minimize heat buildup and maintain stable link quality during burst transmissions. | Use Scenario: Supplies 3.3 V to application processor I/O banks and PMIC interface in 7-inch Android tablets with 3.7 V Li-poly battery. IC Role / Device Role / Timing Role: Secondary regulated rail delivering clean, low-noise 3.3 V with active discharge for safe power sequencing during suspend/resume cycles. Use Value: 26 µA quiescent current extends standby time; WLCSP-6 footprint saves >0.8 mm² board area versus QFN alternatives. |
| Netbook USB Hub Controller | DSC Image Sensor Bias |
Use Scenario: Provides 3.3 V to USB 3.0 hub controller and associated level shifters in fanless netbooks powered from 5 V system rail. IC Role / Device Role / Timing Role: Point-of-load regulator converting 5 V to 3.3 V with forced PWM mode enabled via MODE pin to suppress audible noise. Use Value: 3 MHz switching moves switching harmonics beyond audio band; <15 mVpp output ripple meets USB compliance requirements. | Use Scenario: Generates stable 3.3 V bias for CMOS image sensor analog front-end in digital still cameras with mechanical shutter. IC Role / Device Role / Timing Role: Low-noise, fast-transient regulator powering sensor analog circuitry requiring <1% output deviation during exposure bursts. Use Value: Seamless PFM/PWM transition maintains <±15 mV regulation across 0.1–600 mA load range-preventing image artifacts during scene changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | 3 MHz, 600 mA, 3.3 V fixed; 17 µA IQ; WSON-6 (2.0 × 2.0 mm) | Larger footprint (+2.5× area); no MODE pin sync; lower IQ but no active discharge | Preferred where board space allows larger package and active discharge is unnecessary. |
| RT8059ZSP | 3 MHz, 600 mA, 3.3 V fixed; 25 µA IQ; WDFN-6 (1.5 × 1.5 mm) | Smaller than WLCSP but larger than FAN53600AUC33X; no external sync; no active discharge | Consider when footprint constraints exclude WLCSP but require sub-2 mm² solution. |
Compared with TPS62231DRYR and RT8059ZSP, FAN53600AUC33X offers the smallest board footprint (1.16 × 0.86 mm), integrated active discharge, and MODE-pin-based clock synchronization-making it optimal for ultra-dense mobile designs requiring precise power sequencing and EMI control.
Availability
FAN53600AUC33X is available at Aetrix Electronics and suitable for WiFi data cards, tablet core logic supplies, and netbook USB hub controllers requiring stable component supply, long-term lifecycle support, and consistent WLCSP-6 sourcing.
Supply support for FAN53600AUC33X 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and mobile markets.
FAN53600AUC33X belongs to ON Semiconductor's high-frequency synchronous buck regulator product line, engineered for space-constrained portable electronics demanding ultra-small footprint, low IQ, and fast transient response.
FAQ
What is the output voltage tolerance of FAN53600AUC33X over full load and temperature?
FAN53600AUC33X delivers 3.3 V output with ±3.0% accuracy across 0–600 mA load and –40°C to +85°C ambient temperature, verified per electrical characteristics table in the datasheet. This tolerance holds regardless of input voltage within 2.3–5.5 V range and includes effects of FB divider tolerance (not applicable for fixed-output variant) and internal reference drift.
Does FAN53600AUC33X support external clock synchronization, and what is the valid frequency range?
Yes, FAN53600AUC33X supports external clock synchronization via the MODE pin. When driven with a square wave, it locks to frequencies between 1.3 MHz and 1.7 MHz, and operates at exactly twice that input frequency-yielding synchronized switching from 2.6 MHz to 3.4 MHz. This feature reduces EMI peaks and enables multi-regulator phase alignment.
What is the purpose of the MODE pin on FAN53600AUC33X, and how should it be configured?
The MODE pin on FAN53600AUC33X serves dual functions: logic-level mode selection (high = forced PWM, low = auto PFM/PWM) and external clock input. It must never be left floating. For fixed-frequency operation, tie MODE to VIN; for PFM efficiency optimization, tie to GND; for synchronization, drive with 1.3–1.7 MHz square wave referenced to GND.
How does the active output discharge function work in FAN53600AUC33X, and when is it enabled?
FAN53600AUC33X provides active output discharge through an internal 230 Ω switch from FB to GND, activated automatically when EN is pulled low. This discharges the output capacitor rapidly-critical for safe power-down sequencing in multi-rail systems. The function is factory-enabled for all AUCx variants including FAN53600AUC33X and requires no external components.
What are the recommended external components for FAN53600AUC33X, and why is layout critical?
FAN53600AUC33X requires three external components: 1 µH inductor (e.g., Murata LQM2MPN1R0MGH), 2.2 µF X5R input capacitor placed adjacent to VIN/GND pins, and 10 µF X5R output capacitor. Layout is critical because high di/dt SW node routing and minimized GND loop inductance directly impact EMI, efficiency, and transient response-especially given the 3 MHz switching frequency.
FAN53600AUC33X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WLCSP (1.23x0.88)
FAN53600AUC33X FAQ
1.How can I place an order for FAN53600AUC33X through Aetrix?
Please submit a Request for Quotation (RFQ) for FAN53600AUC33X 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 FAN53600AUC33X reliable?
The price and inventory of FAN53600AUC33X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FAN53600AUC33X is usually 5 days.
3.What payment methods are accepted for FAN53600AUC33X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FAN53600AUC33X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FAN53600AUC33X?
FAN53600AUC33X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FAN53600AUC33X 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 FAN53600AUC33X?
For technical support, including FAN53600AUC33X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FAN53600AUC33X requirements.
6.How does Aetrix verify that FAN53600AUC33X is sourced from the original manufacturer or authorized distributors?
All FAN53600AUC33X 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 FAN53600AUC33X meets industry standards.
7.What is the process for return or replacement of FAN53600AUC33X?
All FAN53600AUC33X units undergo pre-shipment inspection (PSI). If there is an issue with FAN53600AUC33X, 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 FAN53600AUC33X part is unused and in its original packaging.
Return procedure for FAN53600AUC33X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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