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onsemi FAN53610AUC30X
- Part No.:
- FAN53610AUC30X
- Manufacturer:
- onsemi
- Package:
- 6-UFBGA, WLCSP
- Datasheet:
-
FAN53610AUC30X.pdf
- Description:
- IC REG BUCK 3V 1A 6WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,203
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Product details
Overview
FAN53610AUC30X from ON Semiconductor is a 3 MHz, 1 A synchronous step-down DC-DC regulator in WLCSP-6 (0.4 mm pitch) packaging, delivering fixed 3.0 V output from 2.3–5.5 V input. It integrates PMOS/NMOS synchronous rectification with 175 mΩ/165 mΩ RDS(on), achieves 97% peak efficiency, and supports PFM/PWM mode auto-switching for ultra-low 26 µA quiescent current-optimized for portable power rails in mobile data cards and tablets.
For engineers reviewing the FAN53610AUC30X datasheet, pinout, applications, or equivalent options, key selection criteria include its 3.0 V output accuracy (±3.3% over load/temperature), MODE-pin-synchronized operation up to 1.7 MHz, thermal shutdown at 150°C, and compatibility with 1 µH inductors and 10 µF ceramic output capacitors.
Technical Context
FAN53610AUC30X employs a proprietary non-linear fixed-frequency PWM modulator with seamless PFM-to-PWM transition, enabling stable 3 MHz switching across wide VIN (2.3–5.5 V) and IOUT (0–1 A) ranges while maintaining low output ripple and fast transient response. Its control loop is independent of output capacitor ESR, allowing full use of low-ESR ceramic capacitors.
The device integrates internal soft-start (300 µs typical), input UVLO (2.27 V threshold with 200 mV hysteresis), and cycle-by-cycle overcurrent protection with 1.75 A typical peak limit. MODE pin enables forced PWM mode or external clock synchronization at 1.3–1.7 MHz, doubling to 2.6–3.4 MHz switching frequency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±3.3% (2.90–3.11 V over 0–1 A load, 2.3–5.5 V input, –40°C to +85°C) |
| Max Output Current | 1 A continuous-supports high-efficiency power delivery to SoC cores or RF modules without external current sensing |
| Switching Frequency | 3.0 MHz nominal (2.7–3.3 MHz range); enables use of 1 µH inductor and compact 0603-size 10 µF output capacitor |
| Quiescent Current | 26 µA typical in PFM mode-extends battery life in always-on subsystems like GPS or Bluetooth LE receivers |
| RDS(on) | 175 mΩ (PMOS) / 165 mΩ (NMOS)-minimizes conduction loss at 1 A, supporting >90% efficiency at 500 mA with 3.6 V input |
| Thermal Shutdown | 150°C activation with 15°C hysteresis-protects die during sustained overload or poor PCB thermal design |
| UVLO Threshold | 2.27 V rising edge with 200 mV hysteresis-prevents erratic startup during brown-out conditions in Li-ion-powered systems |
Pinout & Package
Package: WLCSP-6, 0.4 mm ball pitch, 1.16 mm × 0.86 mm footprint, 586 µm typical height (JEDEC-compliant WL-CSP).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | MODE | Logic-controlled mode select: high = forced PWM; low = auto PFM/PWM; also accepts external sync clock (1.3–1.7 MHz) |
| B1 | SW | Switch node-connects directly to inductor; carries high di/dt switching current; requires tight layout to minimize EMI |
| C1 | FB | Feedback input-monitors regulated output via resistive divider (not used for fixed-output variants like FAN53610AUC30X) |
| C2 | GND | Power and signal ground-must be low-impedance connection to PCB ground plane; shared reference for all analog circuits |
| B2 | EN | Enable input-active-high (VIH ≥ 1.2 V); < 0.4 V disables IC and reduces supply current to ≤1 µA |
| A2 | VIN | Main input supply-accepts 2.3–5.5 V; requires local 2.2 µF ceramic capacitor placed within 2 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ PFM mode | 26 µA typical-enables >100-hour standby in coin-cell-powered IoT sensors without compromising transient response |
| Synchronous rectification | Integrated 175 mΩ PMOS / 165 mΩ NMOS-eliminates external Schottky diode, reducing BOM count and thermal footprint |
| External clock sync | MODE pin accepts 1.3–1.7 MHz square wave-allows system-level EMI reduction by aligning switching to noise-immune bands |
| Active output discharge | 230 Ω internal path when EN = GND-ensures rapid VOUT discharge to prevent latch-up in multi-rail sequencing applications |
| Robust protection suite | UVLO, thermal shutdown (150°C), cycle-by-cycle OCP (1.75 A typ), and soft-start (300 µs)-reduces need for external fault management circuitry |
Applications
| Mobile Data Card Power | Tablet Core Rail |
|---|---|
|
Use Scenario: Powers baseband processor and LTE/WiMAX transceivers in compact USB-based data dongles with single-cell Li-ion input. IC Role / Device Role / Timing Role: Primary buck regulator delivering stable 3.0 V at up to 1 A with minimal board area and thermal rise. Use Value: 3 MHz switching allows 1 µH inductor and 10 µF ceramic output cap-reducing solution size by >40% vs. 1 MHz alternatives. |
Use Scenario: Supplies 3.0 V to application processor I/O or GPU voltage domains in 7–10 inch tablets with aggressive thermal constraints. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator operating in auto PFM mode during light-load UI idle states. Use Value: 26 µA IQ extends battery runtime during video playback pause or background sync without sacrificing 200 mA/µs transient recovery. |
| DSC/DVC Image Sensor Bias | Netbook Memory Interface |
|
Use Scenario: Provides clean, low-noise 3.0 V bias to CMOS image sensor analog front-end in digital still/video cameras. IC Role / Device Role / Timing Role: Low-ripple power source with forced PWM mode enabled via MODE pin to suppress switching noise near sensitive analog circuits. Use Value: PFM-disabled operation ensures fixed 3 MHz frequency-simplifying EMI filtering and avoiding beat frequencies with sensor pixel clocks. |
Use Scenario: Generates 3.0 V for DDR2/DDR3 memory termination and interface logic in fanless netbooks with limited airflow. IC Role / Device Role / Timing Role: Compact, thermally efficient regulator mounted adjacent to memory module with minimal copper pour requirements. Use Value: WLCSP-6 package (1.16 × 0.86 mm) fits within tight BGA escape routing zones; 125°C/W θJA enables operation at 85°C ambient without derating. |
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, 1 A, 3.0 V fixed; 17 µA IQ; WSON-6 (2 × 2 mm); no MODE pin sync capability | Larger footprint; lacks external clock synchronization and active discharge | Preferred where board space permits larger package and sync is unnecessary |
| RT8059GJ6 | 3 MHz, 1 A, 3.0 V fixed; 25 µA IQ; DFN-6 (2 × 2 mm); supports PFM/PWM but no sync input | Higher RDS(on) (220/200 mΩ); no integrated discharge FET; requires external resistor for discharge | Selected when cost sensitivity outweighs need for ultra-low IQ or compact WLCSP |
Compared with TPS62231DRYR and RT8059GJ6, FAN53610AUC30X offers the smallest form factor (WLCSP-6), lowest thermal resistance in its class, and unique MODE-pin synchronization-making it optimal for space-constrained, noise-sensitive, or thermally demanding portable designs requiring precise timing control.
Availability
FAN53610AUC30X is available at Aetrix Electronics and suitable for mobile data card power, tablet core rail, DSC image sensor bias, and netbook memory interface applications requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for FAN53610AUC30X 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 specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
FAN53610AUC30X belongs to the Fairchild-integrated FAN536xx family of high-frequency synchronous buck regulators-designed specifically for ultra-compact, battery-powered portable electronics demanding high efficiency at light loads and fast transient response.
FAQ
What is the output voltage tolerance of FAN53610AUC30X over temperature and load?
FAN53610AUC30X delivers 3.0 V output with ±3.3% accuracy across full operating conditions: 0–1 A load, 2.3–5.5 V input, and –40°C to +85°C ambient. Measured deviation remains within 2.891–3.110 V at 3.8 V input and 2.891–3.110 V at 5.0 V input per datasheet Table 3, ensuring reliable logic-level compliance for 3.0 V I/O domains.
Does FAN53610AUC30X require an external feedback resistor network?
No. FAN53610AUC30X is a fixed-output variant-its 3.0 V regulation is implemented internally, eliminating the need for external FB resistors. The FB pin (C1) is not connected in standard operation and must remain unpopulated or floating per datasheet guidance for fixed-voltage versions.
How does the MODE pin affect switching behavior in FAN53610AUC30X?
When MODE is pulled high (>1.2 V), FAN53610AUC30X operates exclusively in PWM mode regardless of load. When MODE is low (<0.4 V), it automatically switches between PFM (light load) and PWM (medium/heavy load). Applying a 1.3–1.7 MHz square wave to MODE synchronizes switching at double that frequency (2.6–3.4 MHz).
What is the minimum recommended output capacitance for stable operation of FAN53610AUC30X?
The datasheet specifies 10 µF ceramic (X5R, 0603) as the minimum recommended output capacitance for FAN53610AUC30X. This value ensures adequate phase margin, acceptable output ripple (<15 mV pk-pk under 500 mA step load), and robust transient response-verified across –40°C to +85°C with 3.6 V input.
Can FAN53610AUC30X operate with input voltage below 2.3 V?
No. FAN53610AUC30X has a guaranteed operational input range of 2.3 V to 5.5 V. Below 2.3 V, the internal UVLO circuit disables regulation-VIN must exceed 2.27 V (typical) to enable startup, and operation below 2.3 V is not characterized or supported per absolute maximum ratings and recommended conditions.
FAN53610AUC30X 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):
- 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)
FAN53610AUC30X FAQ
1.How can I place an order for FAN53610AUC30X through Aetrix?
Please submit a Request for Quotation (RFQ) for FAN53610AUC30X 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 FAN53610AUC30X reliable?
The price and inventory of FAN53610AUC30X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FAN53610AUC30X is usually 5 days.
3.What payment methods are accepted for FAN53610AUC30X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FAN53610AUC30X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FAN53610AUC30X?
FAN53610AUC30X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FAN53610AUC30X 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 FAN53610AUC30X?
For technical support, including FAN53610AUC30X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FAN53610AUC30X requirements.
6.How does Aetrix verify that FAN53610AUC30X is sourced from the original manufacturer or authorized distributors?
All FAN53610AUC30X 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 FAN53610AUC30X meets industry standards.
7.What is the process for return or replacement of FAN53610AUC30X?
All FAN53610AUC30X units undergo pre-shipment inspection (PSI). If there is an issue with FAN53610AUC30X, 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 FAN53610AUC30X part is unused and in its original packaging.
Return procedure for FAN53610AUC30X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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