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onsemi FAN48610BUC50X
- Part No.:
- FAN48610BUC50X
- Manufacturer:
- onsemi
- Package:
- 9-UFBGA, WLCSP
- Datasheet:
-
FAN48610BUC50X.pdf
- Description:
- IC REG BOOST 5V 1A 9WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:7,721
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Product details
Overview
FAN48610BUC50X from onsemi is a 2.5 MHz synchronous boost DC-DC converter in a 9-pin WLCSP package, delivering up to 1.5 A output current at 5.0 V with input as low as 3.0 V, featuring integrated N- and P-channel MOSFETs, 94% peak efficiency, and USB OTG power delivery compliance.
For engineers reviewing the FAN48610BUC50X datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage range (2.5–4.8 V), fixed 5.0 V output, thermal shutdown at 150 °C, EN logic interface compatibility, and WLCSP-9 footprint constraints for space-constrained portable designs.
Technical Context
The FAN48610BUC50X implements a constant-frequency, current-mode control architecture operating at 2.5 MHz nominal switching frequency, supporting continuous conduction mode (CCM) and discontinuous conduction mode (DCM) based on load conditions. It integrates both high-side N-MOSFET (RDS(ON) = 80–130 mΩ) and low-side P-MOSFET (RDS(ON) = 65–115 mΩ) for synchronous rectification.
Its adaptive mode control automatically transitions between linear (LIN), soft-start (SS), boost (BST), and pass-through (PT) operating states depending on VIN–VOUT differential and enable status. The device includes internal UVLO (2.2–2.3 V), 150 mV hysteresis, and precise output regulation (±2% over temperature and load).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2%, enabling direct USB OTG host power without external feedback resistors. |
| Switching Frequency | 2.0–3.0 MHz (typ. 2.5 MHz), allowing use of ultra-small 0.47 µH inductors and compact 0603 MLCCs. |
| Max Output Current | 1.5 A at VIN ≥ 3.0 V and VOUT = 5.0 V, sufficient for single-port USB OTG charging. |
| Input Voltage Range | 2.5 V to 4.8 V, compatible with single-cell Li-ion (2.7–4.2 V) and Li-polymer battery discharge profiles. |
| Peak Efficiency | 94% at 500 mA, 3.6 VIN, reducing thermal load in sealed portable enclosures. |
| UVLO Threshold | 2.2–2.3 V with 150 mV hysteresis, preventing erratic startup during battery brownout. |
| Thermal Shutdown | 150 °C with 20 °C hysteresis, protecting against sustained overload or poor PCB heat sinking. |
Pinout & Package
Package: WLCSP-9 (Case 567QW), 1.215 mm × 1.215 mm × 0.38 mm, 0.4 mm pitch, bottom-side solder balls.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, A2 | VOUT | Regulated 5.0 V output node; connects directly to output capacitor (COUT ≥ 22 µF) and load. |
| A3 | VIN | Main input supply (2.5–4.8 V); requires 10 µF ceramic input capacitor close to pin. |
| B1, B2 | SW | Switch node connecting internal N- and P-MOSFETs; drives external 0.47 µH inductor. |
| B3 | EN | Active-high enable input; 1.05 V logic high threshold, 100 nA leakage, supports microcontroller GPIO control. |
| C1, C2 | PGND | Power ground return for high-current paths (inductor, SW, output cap); must be solid copper plane under package. |
| C3 | AGND | Analog ground reference for internal control circuitry; isolated from PGND except at single-point star connection. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Boost Architecture | Integrated N- and P-MOSFETs eliminate external diode, enabling >94% efficiency and reduced thermal footprint. |
| Adaptive Operating Mode Control | Automatically selects LIN/SS/BST/PT modes based on VIN–VOUT differential, optimizing efficiency across battery discharge curve. |
| USB OTG Compliant Output | Fixed 5.0 V output with ±2% regulation and fast transient response meets USB Battery Charging v1.2 requirements. |
| Ultra-Small WLCSP-9 Footprint | 1.215 mm × 1.215 mm area (<11 mm² total solution size) enables integration into wearables and hearing aids. |
| Robust Protection Suite | Includes thermal shutdown (150 °C), overcurrent limiting (3.0–3.85 A), and input UVLO with hysteresis. |
Applications
| Wireless Headsets | Portable Medical Sensors |
|---|---|
Use Scenario: Compact Bluetooth headset requiring regulated 5 V for USB-C charging port and audio codec IC. IC Role / Device Role / Timing Role: Primary boost regulator converting 3.0–4.2 V battery voltage to stable 5.0 V USB OTG power rail. Use Value: Enables full-size USB-C receptacle in sub-2 cm³ enclosure using only 0.47 µH inductor and 0603 capacitors. | Use Scenario: Disposable glucose monitor with coin-cell or thin-film battery needing 5 V for BLE radio and sensor bias. IC Role / Device Role / Timing Role: High-efficiency boost converter supplying 5.0 V to RF transceiver while minimizing quiescent current drain. Use Value: 85 µA typical quiescent current extends battery life beyond 6 months; WLCSP-9 fits under 10 mm × 10 mm PCB area. |
| Smart Wearable Chargers | USB-C Accessory Adapters |
Use Scenario: Miniature Qi wireless charging transmitter with integrated USB-C PD input negotiation and 5 V output stage. IC Role / Device Role / Timing Role: Secondary boost stage generating clean 5.0 V from negotiated 3.3–5.0 V PD bus for internal MCU and driver ICs. Use Value: 2.5 MHz switching avoids audible noise; <2 mVPP ripple at 1 A ensures stable ADC reference for coil current sensing. | Use Scenario: USB-C to legacy USB-A adapter requiring 5 V output from variable PD source (3.3–21 V). IC Role / Device Role / Timing Role: Fixed-output boost regulator accepting down-converted 3.3–4.8 V intermediate rail to deliver compliant 5.0 V USB-A power. Use Value: Pass-through mode activates when VIN > 5.15 V, eliminating conversion loss; BST mode engages below that threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61291DRVR | Fixed 5.0 V output, 2.5 MHz, but uses 6-pin WSON (2.0 × 2.0 mm); higher IQ (1.2 µA vs. 85 µA). | Requires larger PCB area and delivers lower light-load efficiency in battery-powered sensors. | Choose when board space permits larger package and higher output current (2 A) is required. |
| MAX17222ETA+ | Adjustable output (0.6–5.5 V), 2.2 MHz, 12-pin WLP (1.59 × 1.59 mm); no integrated pass-through mode. | Lacks USB OTG-specific regulation tightness and automatic PT mode for high-VIN scenarios. | Prefer when programmable output or tighter load regulation (±0.8%) is needed over fixed 5 V simplicity. |
Compared with TPS61291DRVR and MAX17222ETA+, the FAN48610BUC50X offers smallest footprint (1.22 mm²), lowest quiescent current, and native USB OTG compliance - making it optimal for space- and battery-life-critical portable accessories.
Availability
FAN48610BUC50X is available at Aetrix Electronics and suitable for USB OTG power delivery, wearable medical sensors, and compact wireless charging accessories requiring stable component supply and long-term lifecycle support.
Supply support for FAN48610BUC50X 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 technologies for automotive, industrial, cloud, and IoT applications.
The FAN48610 belongs to onsemi's TINYBOOST™ family of ultra-compact, high-frequency boost converters designed specifically for space-constrained portable electronics requiring USB-compliant 5 V power rails.
FAQ
What is the recommended input capacitor for FAN48610BUC50X?
The FAN48610BUC50X requires a 10 µF, 6.3 V, X5R ceramic capacitor in 0603 case size placed as close as possible to the VIN and PGND pins. Murata GRM188R60J106K and TDK C1608X5R0J106K are validated part numbers per the datasheet. This value ensures stable operation across the 2.5–4.8 V input range and suppresses high-frequency switching noise.
Does FAN48610BUC50X support automatic pass-through mode?
Yes, FAN48610BUC50X supports automatic pass-through (PT) mode when VIN exceeds VOUT + 300 mV (i.e., >5.3 V). In this state, the internal P-MOSFET conducts directly, bypassing switching operation to achieve near-zero conversion loss. This behavior is confirmed in the functional description and mode transition table on page 9 of the datasheet.
What is the maximum output current capability of FAN48610BUC50X at 2.5 V input?
At VIN = 2.5 V and VOUT = 5.0 V, the FAN48610BUC50X delivers ≥1.0 A continuous output current, as specified in the Electrical Characteristics table (page 4). This is enabled by its low RDS(ON) MOSFETs and 2.5 MHz switching, which minimize inductor size and conduction losses despite the high step-up ratio.
How does the EN pin interface with standard microcontrollers?
EN is an active-high logic input with VIH = 1.05 V (min) and VIL = 0.4 V (max), compatible with 1.8 V, 3.3 V, and 5 V GPIO outputs. Its 100 nA leakage and 200–400 kΩ pull-down resistance ensure reliable low-power control. The FAN48610BUC50X enters full shutdown (IQ < 3 µA) when EN is held low, preserving battery life in standby.
Is FAN48610BUC50X RoHS and REACH compliant?
Yes, FAN48610BUC50X is RoHS-compliant and REACH-conformant per onsemi's official product change notifications and material declarations. The WLCSP-9 package uses lead-free solder balls and halogen-free molding compound, meeting JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) requirements for surface-mount assembly.
FAN48610BUC50X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- TinyBoost®
- Package/Case:
- 9-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 4.8V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A (Switch)
- Frequency - Switching:
- 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-WLCSP (1.22x1.22)
FAN48610BUC50X FAQ
1.How can I place an order for FAN48610BUC50X through Aetrix?
Please submit a Request for Quotation (RFQ) for FAN48610BUC50X 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 FAN48610BUC50X reliable?
The price and inventory of FAN48610BUC50X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FAN48610BUC50X is usually 5 days.
3.What payment methods are accepted for FAN48610BUC50X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FAN48610BUC50X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FAN48610BUC50X?
FAN48610BUC50X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FAN48610BUC50X 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 FAN48610BUC50X?
For technical support, including FAN48610BUC50X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FAN48610BUC50X requirements.
6.How does Aetrix verify that FAN48610BUC50X is sourced from the original manufacturer or authorized distributors?
All FAN48610BUC50X 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 FAN48610BUC50X meets industry standards.
7.What is the process for return or replacement of FAN48610BUC50X?
All FAN48610BUC50X units undergo pre-shipment inspection (PSI). If there is an issue with FAN48610BUC50X, 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 FAN48610BUC50X part is unused and in its original packaging.
Return procedure for FAN48610BUC50X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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