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onsemi FAN53610AUC33X
- Part No.:
- FAN53610AUC33X
- Manufacturer:
- onsemi
- Package:
- 6-UFBGA, WLCSP
- Datasheet:
-
FAN53610AUC33X.pdf
- Description:
- IC REG BUCK 3.3V 1A 6WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,980
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Product details
Overview
FAN53610AUC33X from ON Semiconductor is a 3 MHz, 1 A 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-optimized for portable power rails in mobile computing and wireless modules.
For engineers reviewing the FAN53610AUC33X datasheet, pinout, applications, or equivalent options, key selection criteria include its 1 A output capability at 3.3 V, 3 MHz switching frequency enabling compact 1 µH inductor use, low-noise PFM mode for battery-sensitive designs, and thermal shutdown protection with 150°C trip point.
Technical Context
FAN53610AUC33X employs a proprietary non-linear fixed-frequency PWM modulator with synchronous rectification to achieve up to 97% peak efficiency. Its control architecture maintains stable 3 MHz switching across wide VIN (2.3–5.5 V) and IOUT (0–1 A) ranges while decoupling performance from output capacitor ESR-enabling ceramic COUT use.
The device supports seamless transition between continuous conduction mode (CCM) and discontinuous conduction mode (DCM), with automatic PFM entry below ~50 mA load. MODE pin enables forced PWM, external clock synchronization (1.3–1.7 MHz input → 2.6–3.4 MHz fSW), and disables PFM for fixed-frequency, low-ripple operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±3.3% over full load/temperature range-ensures stable core logic or interface rail without external feedback resistors. |
| Max Output Current | 1 A continuous-supports high-current SoC cores or RF transceivers without external current boosting. |
| Switching Frequency | 3.0 MHz nominal (2.7–3.3 MHz)-permits use of 1 µH inductors and reduces solution footprint by >40% vs. 1 MHz regulators. |
| Quiescent Current | 26 µA typical in PFM mode-extends battery life in always-on subsystems like GPS or Bluetooth LE receivers. |
| Input Voltage Range | 2.3 V to 5.5 V-compatible with single-cell Li-ion (2.7–4.2 V), USB 5 V, and boosted 3.3 V supplies. |
| Thermal Shutdown | 150°C with 15°C hysteresis-protects against sustained overload or poor PCB thermal design without latch-up. |
| UVLO Threshold | 2.27 V rising, 200 mV hysteresis-prevents erratic startup during brown-out conditions in battery-powered systems. |
Pinout & Package
Package: WLCSP-6, 0.4 mm pitch, 1.16 mm × 0.86 mm × 0.586 mm (typical height), ball-grid layout with NSMD land pattern.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | MODE | Configures operating mode: logic high forces PWM; logic low enables auto PFM/PWM transition; also accepts sync clock input (1.3–1.7 MHz). |
| B1 | SW | Switch node-connects directly to inductor; carries high di/dt pulses; requires tight layout to minimize EMI and voltage spikes. |
| C1 | FB | Feedback input-internally tied to 3.3 V reference; not accessible for adjustable versions; connects to output capacitor node. |
| C2 | GND | Power and signal ground-must be low-impedance connection to PCB ground plane; shared reference for all internal circuits. |
| B2 | EN | Enable input-active-high; <0.4 V disables (ISD <1 µA); >1.2 V enables; includes 100 mV hysteresis to reject noise. |
| A2 | VIN | Main power input-accepts 2.3–5.5 V; requires local 2.2 µF ceramic capacitor placed within 2 mm of pin to suppress switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| 97% Peak Efficiency | Minimizes thermal stress and extends runtime in space-constrained portable devices using 1 µH inductor and 10 µF ceramic output cap. |
| 26 µA PFM Quiescent Current | Enables >100-hour standby in IoT sensors or wearables without compromising transient response during wake-up events. |
| Internal Soft-Start (300 µs) | Prevents inrush current into large output capacitors; eliminates need for external RC timing network or sequencing controllers. |
| Active Output Discharge (230 Ω) | Drains residual charge from VOUT when disabled-critical for multi-rail systems requiring controlled power-down sequencing. |
| 150°C Thermal Shutdown | Provides fail-safe protection under sustained overload or inadequate heatsinking-re-enables automatically after 15°C cooldown. |
Applications
| Mobile Application Processor Core Rail | Wi-Fi/Bluetooth Coexistence Module |
|---|---|
Use Scenario: Powers ARM Cortex-A series CPU cores in ultra-thin tablets or handheld terminals with dynamic DVFS scaling. IC Role / Device Role / Timing Role: Primary buck regulator supplying clean 3.3 V to I/O interfaces and auxiliary peripherals. Use Value: 3 MHz switching avoids AM radio band interference; 1 A rating handles burst loads during video decode without voltage droop. | Use Scenario: Supplies regulated 3.3 V to dual-band Wi-Fi 6 + Bluetooth 5.2 combo ICs in compact data cards. IC Role / Device Role / Timing Role: Single-chip power source for RF front-end and baseband logic with fast load transient recovery. Use Value: Sub-30 µA quiescent current preserves battery during BLE advertising intervals; PFM-to-PWM seamless transition prevents RF packet loss during transmit bursts. |
| Industrial Edge Sensor Node | USB-C Powered Peripheral |
Use Scenario: Powers low-power MCU, MEMS accelerometer, and LoRa transceiver in battery-operated predictive maintenance sensor. IC Role / Device Role / Timing Role: Main system regulator managing intermittent wake/sleep cycles with minimal self-consumption. Use Value: 26 µA IQ enables >2-year battery life on CR2032; thermal shutdown protects against enclosure overheating in sealed enclosures. | Use Scenario: Regulates USB-C 5 V PD input down to stable 3.3 V for FPGA configuration memory and USB PHY in docking stations. IC Role / Device Role / Timing Role: Input-stage buck converter accepting variable 5 V supply with robust line transient immunity. Use Value: 2.3–5.5 V input range accommodates USB-C PD negotiation dips; 3 MHz fSW allows small inductor size for slim form factor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRVR | 3 MHz, 600 mA, 3.3 V fixed; 17 µA IQ; no MODE pin sync capability; same WLCSP-6 package. | Limited to 600 mA-insufficient for high-current RF or processor I/O rails. | Select when lower IQ and simpler control suffice, and load never exceeds 600 mA. |
| RTQ2132BGQW | 2.5 MHz, 1.2 A, 3.3 V fixed; 25 µA IQ; includes I²C programmability and power-good flag; 1.2 mm × 0.8 mm WLCSP. | Requires firmware integration for configuration; larger package increases board area by 15%. | Choose when digital control, fault reporting, or margining is required beyond basic regulation. |
Compared with TPS62231DRVR and RTQ2132BGQW, FAN53610AUC33X delivers higher output current in identical footprint with dedicated MODE pin for flexible PFM/PWM management-making it optimal for cost-sensitive, high-transient mobile applications where analog configurability and minimal BOM count are prioritized.
Availability
FAN53610AUC33X is available at Aetrix Electronics and suitable for mobile computing, wireless connectivity modules, and industrial edge sensor nodes requiring stable component supply with guaranteed long-term manufacturability.
Supply support for FAN53610AUC33X 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 supplier focused on energy-efficient electronics, with leadership in power management, analog, and sensor technologies.
FAN53610AUC33X belongs to the Fairchild-integrated high-frequency buck regulator product line, designed specifically for space-constrained portable and wireless applications demanding high efficiency, low IQ, and minimal external components.
FAQ
What is the maximum output current supported by FAN53610AUC33X?
FAN53610AUC33X supports up to 1 A continuous output current at 3.3 V. This is confirmed in the "Ordering Information" table and electrical characteristics section of the datasheet, where FAN53610 variants are explicitly rated for 1 A versus FAN53600's 600 mA. The device sustains this current across –40°C to +85°C ambient with proper thermal layout and 1 µH inductor.
Does FAN53610AUC33X require external feedback resistors to set the output voltage?
No, FAN53610AUC33X does not require external feedback resistors. It is a fixed-output regulator with internally trimmed 3.3 V reference, as stated in the "Description" and "Ordering Information" sections. The FB pin is connected internally to the reference and is not user-adjustable-simplifying design and reducing component count.
How does the MODE pin function on FAN53610AUC33X?
The MODE pin on FAN53610AUC33X serves three functions: (1) logic high forces continuous PWM mode; (2) logic low enables automatic PFM/PWM transition based on load; (3) applying a 1.3–1.7 MHz square wave synchronizes the internal oscillator to twice that frequency. The pin includes Schmitt-trigger input for noise immunity and must never be left floating.
What is the recommended input and output capacitance for FAN53610AUC33X?
The datasheet specifies 2.2 µF ceramic input capacitor (X5R, 0402) placed adjacent to VIN and GND pins, and 10 µF ceramic output capacitor (X5R, 0603). These values ensure stable operation, low ripple, and optimal transient response. Larger COUT improves load-step response but does not affect loop stability; CIN must be low-ESR to handle high-frequency switching currents.
Is FAN53610AUC33X compatible with lead-free reflow processes?
Yes, FAN53610AUC33X is qualified for standard lead-free reflow per JEDEC J-STD-020, with peak solder temperature up to +260°C for 10 seconds. Its WLCSP-6 package uses SAC305-compatible solder balls, and the thermal profile must respect the 0.586 mm typical package height and 0.4 mm pitch to avoid bridging or voiding.
FAN53610AUC33X 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:
- 1A
- 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)
FAN53610AUC33X FAQ
1.How can I place an order for FAN53610AUC33X through Aetrix?
Please submit a Request for Quotation (RFQ) for FAN53610AUC33X 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 FAN53610AUC33X reliable?
The price and inventory of FAN53610AUC33X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FAN53610AUC33X is usually 5 days.
3.What payment methods are accepted for FAN53610AUC33X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FAN53610AUC33X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FAN53610AUC33X?
FAN53610AUC33X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FAN53610AUC33X 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 FAN53610AUC33X?
For technical support, including FAN53610AUC33X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FAN53610AUC33X requirements.
6.How does Aetrix verify that FAN53610AUC33X is sourced from the original manufacturer or authorized distributors?
All FAN53610AUC33X 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 FAN53610AUC33X meets industry standards.
7.What is the process for return or replacement of FAN53610AUC33X?
All FAN53610AUC33X units undergo pre-shipment inspection (PSI). If there is an issue with FAN53610AUC33X, 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 FAN53610AUC33X part is unused and in its original packaging.
Return procedure for FAN53610AUC33X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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