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onsemi FAN48630UC50X
- Part No.:
- FAN48630UC50X
- Manufacturer:
- onsemi
- Package:
- 16-UFBGA, WLCSP
- Datasheet:
-
FAN48630UC50X.pdf
- Description:
- IC REG BOOST PROG 1.5A 16WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,208
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Product details
Overview
FAN48630UC50X from onsemi is a synchronous boost regulator with forced bypass mode, designed for single-cell Li-ion battery systems requiring stable 5.0 V output from inputs as low as 2.35 V. It delivers up to 1500 mA continuous load current at VIN = 2.6 V boosting to 3.5 V, features 2.5 MHz switching frequency, integrated N- and P-channel power switches (RDS(ON)N = 120 mΩ, RDS(ON)P = 85 mΩ), and operates in WLCSP16 (1.78 × 1.78 mm) package for space-constrained portable electronics.
For engineers reviewing the FAN48630UC50X datasheet, pinout, applications, or equivalent options, key selection considerations include fixed 5.0 V output (±4% accuracy), OCP-enabled forced bypass mode (90 µA IQ), thermal shutdown at 150°C, soft-start timing (1300 µs slow mode), and compatibility with 0.47 µH inductors and 0603 ceramic capacitors.
Technical Context
The FAN48630UC50X implements current-mode control with valley-current limiting (2.9 A typical) and automatic transition between Continuous Conduction Mode (CCM) at ~2.5 MHz and Discontinuous Conduction Mode (DCM) at light loads. Its Bypass Mode activates when VIN exceeds VOUT_TARGET (5.0 V), engaging internal P-channel switches (RDS(ON)P_BYP = 85 mΩ) to provide low-loss direct conduction.
Startup follows a three-phase sequence: Linear Startup (LIN1/LIN2) with fixed current sourcing, Soft-Start (SS) with stepped reference ramping, then Boost Operating Mode (BST). Forced Bypass is triggered via BYP pin assertion, disabling most bias circuitry except OCP and overtemperature protection-enabling ultra-low quiescent current (90 µA) while maintaining fault safety.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.00 V (±4% DC accuracy), with OCP-on forced bypass configuration per Table 1. |
| Max Load Current | 1500 mA continuous at VIN ≥ 3.0 V (VMIN_1.5A spec for VOUT = 5.0 V, TJ < 120°C). |
| Switching Frequency | 2.5 MHz typical (2.0–3.0 MHz range), enabling compact 0.47 µH inductor and small 0603 capacitors. |
| Quiescent Current | 90 µA in forced bypass mode (OCP On variant), critical for battery runtime in standby states. |
| Efficiency | Up to 96% at 1000 mA load, VIN = 3.6 V, VOUT = 5.0 V - reduces thermal stress in thin mobile PCBs. |
| Thermal Protection | Shuts down at 150°C (T150T), restarts after cooling to 130°C (T150H = 20°C hysteresis). |
| Package | WLCSP16 (1.78 × 1.78 × 0.586 mm, 0.4 mm pitch), optimized for minimal board area in smartphones and wearables. |
Pinout & Package
Package: Wafer-Level Chip-Scale Package (WLCSP16), 16-bump, 0.4 mm pitch, 1.78 × 1.78 mm footprint, 0.586 mm height (Case 567SY).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (EN) | Enable control input | Logic-high (>1.2 V) enables regulation; must be driven by 1.8 V logic-not connected to VIN. |
| A2 (PG) | Power Good open-drain output | Pulled LOW during overload, thermal fault (>120°C), or FAULT state; HIGH indicates stable regulation. |
| A3–A4 (VIN) | Main input supply | Accepts 2.35–5.5 V; connects directly to Li-ion battery anode; UVLO threshold = 2.35 V (200 mV hysteresis). |
| B1 (VSEL) | Output voltage select | Unused in fixed-output FAN48630UC50X; tied to AGND or left floating per design (no VSEL function active). |
| B2, C2, D1 (AGND) | Analog ground reference | Signal return for internal comparators, reference, and control logic; separate from PGND. |
| B3–B4 (VOUT) | Regulated output | Delivers 5.0 V ±4%; requires 20 µF total COUT (2×10 µF, 0603 X5R) placed adjacent to PGND pins. |
| C1 (BYP) | Forced bypass enable | Driving LOW activates OCP-protected bypass mode; disables switching and reduces IQ to 90 µA. |
| C3–C4 (SW) | Switching node | Connects to 0.47 µH inductor; carries high di/dt; requires shortest possible trace to minimize EMI. |
| D2–D4 (PGND) | Power ground return | High-current return path for SW and VOUT; must tie COUT cathode with minimal loop area. |
Key Features
| Feature | Design Value |
|---|---|
| True bypass operation | Enables direct VIN-to-VOUT conduction when VIN > 5.0 V, reducing dropout to <100 mV at 1.5 A (RDS(ON)P_BYP = 85 mΩ). |
| Synchronous rectification | Integrates N-channel boost switch (120 mΩ) and P-channel sync rectifier (85 mΩ), eliminating external Schottky loss. |
| Soft-start with load disconnect | 1300 µs slow-mode startup prevents inrush; true load disconnect during SS avoids unregulated output coupling to system. |
| OCP-protected forced bypass | Maintains short-circuit protection (200 mV drop detection) and thermal shutdown even in forced bypass-unlike Low-IQ variants. |
| Ultra-low shutdown IQ | 1.5–5.0 µA shutdown current extends shelf life of battery-powered devices stored for months. |
Applications
| Smartphone USB OTG Power | Portable LTE RF Front-End |
|---|---|
Use Scenario: Smartphone provides 5 V USB OTG power from 3.7 V Li-ion battery during peripheral attachment. IC Role / Device Role / Timing Role: Boost regulator maintains stable 5.0 V rail despite battery sag to 3.0 V; bypass mode engages when battery recovers above 5.0 V. Use Value: Eliminates need for external LDO or charge pump; supports full USB 2.0 compliance (5.0 V ±5%) with 1500 mA peak current. |
Use Scenario: LTE transceiver module requires clean 5.0 V supply during high-Power Amplifier (PA) transmit bursts. IC Role / Device Role / Timing Role: Synchronous boost delivers low-noise 5.0 V with <50 mVpp ripple at 1000 mA; fast transient response (<1 µs) suppresses PA-induced line droop. Use Value: Enables direct battery-to-PA powering without intermediate buck-boost stage, saving 2.5 mm² PCB area and 15 mW quiescent loss. |
| Low-Voltage Brownout Prevention | Wearable Audio Amplifier Supply |
Use Scenario: Medical wearable continues operation as Li-ion voltage drops from 4.2 V to 2.8 V during discharge cycle. IC Role / Device Role / Timing Role: Regulator sustains 5.0 V output down to VIN = 3.0 V (1500 mA load); UVLO hysteresis prevents chatter near 2.35 V cutoff. Use Value: Extends usable battery capacity by 18% versus fixed 3.3 V LDO solutions; eliminates system reset during deep discharge. |
Use Scenario: True wireless stereo (TWS) earbud powers Class-D audio amplifier from single-cell battery. IC Role / Device Role / Timing Role: Provides low-ripple 5.0 V rail with 96% efficiency at 500 mA; bypass mode reduces noise during idle periods. Use Value: Achieves >8-hour playback time; WLCSP16 footprint fits within 6 mm × 6 mm earbud PCB constraint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS610995YFFR | Fixed 5.0 V output, 1.2 A max, 1.2 MHz switching, 0.7 µH inductor required. | Lacks true bypass mode; relies on LDO post-regulation for low-dropout operation. | Select when board area allows larger inductor and system tolerates higher dropout voltage in battery-sag conditions. |
| MAX17222ATA+T | Adjustable output (0.6–5.25 V), 1.2 A max, 2.5 MHz, integrated 0.47 µH inductor option. | Requires external feedback resistors; no forced bypass pin or OCP-protected bypass mode. | Choose when output voltage flexibility is needed across product variants, accepting trade-off in bypass functionality and layout simplicity. |
Compared with TPS610995YFFR and MAX17222ATA+T, the FAN48630UC50X uniquely combines fixed 5.0 V output, 1500 mA capability, OCP-protected forced bypass, and WLCSP16 packaging-making it optimal for space- and efficiency-critical Li-ion portable designs where battery voltage crosses the regulated output threshold.
Availability
FAN48630UC50X is available at Aetrix Electronics and suitable for smartphone USB OTG power delivery, portable LTE RF front-end biasing, and low-voltage brownout prevention requiring stable component supply, long-term lifecycle support, and RoHS-compliant WLCSP packaging.
Supply support for FAN48630UC50X 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 specializing in energy-efficient power management, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The FAN48630UC50X belongs to onsemi's TINYBOOST® family of high-frequency synchronous boost regulators, engineered specifically for ultra-compact, battery-powered portable electronics demanding high efficiency, low quiescent current, and seamless bypass-to-boost transitions.
FAQ
What is the output voltage tolerance of the FAN48630UC50X under full load and temperature range?
The FAN48630UC50X guarantees ±4% output voltage accuracy (VREG) over DC conditions with VOUT−VIN > 100 mV, across −40°C to +85°C ambient and 0–1500 mA load. At 25°C and 1000 mA, typical deviation is ±2%. This tolerance ensures reliable USB OTG and RF PA operation without additional post-regulation.
Does the FAN48630UC50X support automatic transition between boost and bypass modes?
Yes, the FAN48630UC50X automatically transitions to Bypass Mode when VIN exceeds the target output voltage (5.0 V) and remains there for 5 seconds without switching activity. Entry includes 5-second linear current-source soft-entry to prevent voltage spikes; exit occurs when VOUT falls below 5.0 V −25 mV hysteresis.
How does forced bypass mode differ between FAN48630UC50X and Low-IQ variants?
The FAN48630UC50X uses the OCP On forced bypass configuration: short-circuit protection (200 mV drop detection) and thermal shutdown remain active, with 90 µA quiescent current. Low-IQ variants disable these protections to achieve 4–10 µA IQ but sacrifice fault safety-making FAN48630UC50X preferred for mission-critical rails.
What inductor value is recommended for the FAN48630UC50X, and why?
A 0.47 µH inductor is recommended (e.g., Toko DFE201612C), matching the device's 2.5 MHz switching frequency and valley-current limit architecture. This value balances size, efficiency (>96% at 1000 mA), and transient response. Using 0.33 µH (as in 3.15/3.3 V variants) is not validated for 5.0 V output and may compromise stability or overload margin.
Can the FAN48630UC50X operate with input voltage below 2.35 V?
No-the FAN48630UC50X has a hard UVLO threshold of 2.35 V (with 200 mV hysteresis). Below this, the device remains in shutdown with <5 µA current draw. It cannot regulate or enter bypass mode until VIN rises above 2.35 V, ensuring predictable startup behavior and preventing erratic operation during deep battery discharge.
FAN48630UC50X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- TinyBoost®
- Package/Case:
- 16-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.35V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 5V, 5.29V
- Voltage - Output (Max):
- -
- Current - Output:
- 1.5A (Switch)
- Frequency - Switching:
- 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WLCSP (1.78x1.78)
FAN48630UC50X FAQ
1.How can I place an order for FAN48630UC50X through Aetrix?
Please submit a Request for Quotation (RFQ) for FAN48630UC50X 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 FAN48630UC50X reliable?
The price and inventory of FAN48630UC50X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FAN48630UC50X is usually 5 days.
3.What payment methods are accepted for FAN48630UC50X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FAN48630UC50X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FAN48630UC50X?
FAN48630UC50X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FAN48630UC50X 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 FAN48630UC50X?
For technical support, including FAN48630UC50X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FAN48630UC50X requirements.
6.How does Aetrix verify that FAN48630UC50X is sourced from the original manufacturer or authorized distributors?
All FAN48630UC50X 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 FAN48630UC50X meets industry standards.
7.What is the process for return or replacement of FAN48630UC50X?
All FAN48630UC50X units undergo pre-shipment inspection (PSI). If there is an issue with FAN48630UC50X, 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 FAN48630UC50X part is unused and in its original packaging.
Return procedure for FAN48630UC50X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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