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onsemi FAN48695UC190X
- Part No.:
- FAN48695UC190X
- Manufacturer:
- onsemi
- Package:
- 9-UFBGA, WLCSP
- Datasheet:
-
FAN48695UC190X.pdf
- Description:
- IC REG BOOST 5V 1A DL 9WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:5,727
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Product details
Overview
FAN48695UC190X from onsemi is a synchronous boost regulator in WLCSP-9 package, delivering 5.0 V ±1.5% regulated output from 2.5–5.5 V input, supporting 1 A load with 2.5 MHz fixed-frequency PWM and PFM mode switching, optimized for NFC/USB power amplifiers and portable Li-ion battery systems.
For engineers reviewing the FAN48695UC190X datasheet, pinout, applications, or equivalent options, key selection criteria include pass-through mode behavior, reverse current blocking, thermal shutdown at 145°C, soft-start staging, and WLCSP-9 layout constraints for high-density mobile PCBs.
Technical Context
The FAN48695UC190X integrates dual MOSFETs (55–100 mΩ RDSON for both PMOS and NMOS), operates in three distinct modes-Boost PWM (2.5 MHz fixed), Boost PFM (light-load efficiency), and Pass-Through (automatic or forced)-and uses two-stage linear soft-start with 280 mA / 600 mA current limits to control inrush during startup.
It implements comprehensive protection: overcurrent (2.34–2.84 A peak limit), thermal shutdown (145°C trip, 28°C hysteresis), UVLO (2.10–2.20 V rising threshold), and output fault detection (VOUT < VIN − 300 mV triggers shutdown), all while maintaining reverse current blocking and 3.5–22 μF recommended COUT range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V - supports full discharge curve of single-cell Li-ion (2.8–4.35 V) without dropout. |
| Output Voltage | 5.0 V ±1.5% - tightly regulated for USB-powered peripherals and NFC transceivers requiring stable 5 V rail. |
| Switching Frequency | 2.5 MHz (±10%) - enables use of ultra-small 1 μH inductors and minimizes EMI in space-constrained layouts. |
| Load Current | 1 A continuous - sufficient for powering RF power amplifiers and high-brightness LED drivers in smartphones. |
| Quiescent Current | 27–40 μA in PFM no-load - extends battery life in standby states for always-on NFC or sensor subsystems. |
| Thermal Shutdown | 145°C with 28°C hysteresis - protects die under sustained 1 A load in sealed handheld enclosures. |
| Pass-Through RDS(ON) | ≤200 mΩ total (PMOS + inductor DCR) - ensures low-loss direct path when input ≥ output −250 mV. |
Pinout & Package
Package: Wafer-Level Chip Scale Package (WLCSP-9), 1.365 mm × 1.315 mm × 0.586 mm, 0.4 mm pitch, CASE 567VH.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | VOUT | Regulated 5.0 V output node; requires shortest possible low-impedance trace to COUT for ripple suppression. |
| A2, A3 | PVIN | Main input power pin; connects directly to battery or source with minimal trace inductance and adjacent CIN. |
| B1 | SW | Switching node between internal PMOS/NMOS; connects to inductor L1 and must be routed with tight loop area. |
| B2, B3 | EN | Enable control: logic HIGH (>1.2 V) activates regulator; logic LOW (<0.4 V) disables with 3–8 μA shutdown current. |
| C1 | GND | Common power/signal ground; CIN and COUT must connect here via lowest-inductance paths to minimize noise. |
| C2, C3 | PT | Forced Pass-Through control: logic HIGH (>1.2 V) bypasses boost operation for direct VIN-to-VOUT conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode, reducing conduction loss and enabling >90% efficiency at 500 mA load. |
| Automatic Pass-Through | Engages when PVIN ≥ VOUT − 250 mV for ≥5 s, reducing quiescent loss and heat generation during high-input conditions. |
| 3-stage soft start | Two linear current sources (280 mA then 600 mA) plus switching soft-start limit inrush and prevent input droop during cold start. |
| Reverse current blocking | Prevents backflow from VOUT to PVIN during shutdown or fault, protecting battery and upstream power sources. |
| PFM/PWM hybrid control | Switches to PFM below ~80 mA load, maintaining >85% efficiency down to 100 μA output current. |
Applications
| NFC Power Management | USB OTG Power Delivery |
|---|---|
|
Use Scenario: Mobile phone providing 5 V power to external NFC reader/writer via accessory port. IC Role / Device Role / Timing Role: Synchronous boost regulator supplying regulated 5.0 V from 3.8 V Li-ion battery, with automatic pass-through when host USB supplies ≥4.75 V. Use Value: Enables seamless dual-source operation (battery or USB) without manual switching or voltage conflict, while maintaining <100 mV load regulation across 0–1 A. |
Use Scenario: Smartphone acting as USB On-The-Go host to power flash drives or keyboards. IC Role / Device Role / Timing Role: High-efficiency boost converter generating stable 5.0 V rail from single-cell battery, supporting up to 1 A per USB 2.0 specification. Use Value: Delivers full USB-compliant 5 V ±5% at 500 mA with <15 mVpp ripple, meeting USB-IF electrical compliance for host-mode operation. |
| Portable Audio Amplifier Supply | Smartphone RF Power Amplifier Bias |
|
Use Scenario: Boosting battery voltage to drive Class-D audio amplifier requiring clean 5 V supply. IC Role / Device Role / Timing Role: Low-noise synchronous regulator with reverse current blocking, feeding amplifier VDD while isolating battery from speaker load transients. Use Value: Achieves <100 mVpp output ripple at 1 A using 22 μF X5R COUT, preventing audible switching artifacts in audio signal chain. |
Use Scenario: Providing stable 5.0 V bias to LTE/5G power amplifier modules during burst transmission. IC Role / Device Role / Timing Role: Fast-transient boost regulator with 100 ns response to 50 mA → 500 mA load steps, minimizing PA gain droop during modulation peaks. Use Value: Maintains <±1.5% output accuracy under 1 μs load transients, ensuring consistent PA linearity and EVM performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61291DRVR | Fixed 5.0 V output, 1.2 MHz switching, no pass-through mode, higher IQ (65 μA) in shutdown. | Lacks automatic/forced pass-through; less suitable for dual-source (battery + USB) systems requiring seamless transition. | Choose when board space allows larger inductor and pass-through functionality is unnecessary. |
| MAX17222ATA+T | Adjustable output (0.6–5.25 V), 2.5 MHz, no PT pin, lower max load (500 mA), integrated soft-start only. | Requires external resistor divider for 5 V; insufficient for 1 A PA or USB OTG loads. | Select only for lower-current, adjustable-voltage applications where footprint and cost outweigh 1 A capability. |
Compared with TPS61291DRVR and MAX17222ATA+T, the FAN48695UC190X uniquely combines 1 A capability, 2.5 MHz operation, and dual pass-through modes in a 1.37 mm² WLCSP, making it optimal for compact, multi-source mobile power rails where efficiency, size, and functional flexibility are jointly critical.
Availability
FAN48695UC190X is available at Aetrix Electronics and suitable for NFC power management, USB OTG host operation, portable audio amplifier supply, and smartphone RF power amplifier bias requiring stable component supply, full lifecycle support, and RoHS-compliant packaging.
Supply support for FAN48695UC190X 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, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and mobile markets.
The FAN48695UC190X belongs to onsemi's TINYBOOST family of ultra-compact synchronous boost regulators, engineered specifically for space-constrained portable electronics requiring high efficiency, low quiescent current, and intelligent pass-through operation.
FAQ
What is the output voltage tolerance of the FAN48695UC190X under load?
The FAN48695UC190X delivers 5.0 V with ±1.5% accuracy: 4.900–5.100 V at 200 mA load in PWM mode, and 4.884–5.186 V at no load in PFM mode. This tight regulation ensures compatibility with USB-peripheral interfaces and NFC controller ICs requiring stable 5 V supply across battery voltage variation.
Does the FAN48695UC190X support automatic transition between boost and pass-through modes?
Yes, the FAN48695UC190X automatically enters Pass-Through Mode when PVIN rises to within 250 mV of the regulated output voltage for ≥5 seconds, and exits when PVIN falls 350 mV below target. This behavior is intrinsic to the FAN48695UC190X and requires no external control logic.
What is the maximum inductor current limit for the FAN48695UC190X?
The FAN48695UC190X features a programmable peak inductor current limit of 2.34–2.84 A (typical 2.63 A). This limit is enforced during overload and fault conditions, and is designed to work with the recommended Murata DFE201610E-1R0M (1 μH, 3.6 A ISAT) to ensure safe operation at full 1 A output.
How does the FAN48695UC190X handle thermal overload?
The FAN48695UC190X shuts down switching when junction temperature reaches 145°C (typical), with 28°C hysteresis. Once temperature drops to ~117°C, it automatically restarts. This thermal protection is fully integrated and active across all operating modes of the FAN48695UC190X, including Pass-Through.
Can the FAN48695UC190X operate with input voltage below 2.5 V?
No - the FAN48695UC190X has a minimum recommended input voltage of 2.5 V (absolute maximum rating −0.3 V to 6.0 V). Below 2.5 V, UVLO prevents startup (rising threshold 2.10–2.20 V), and regulation cannot be maintained. The FAN48695UC190X is not specified for sub-2.5 V operation.
FAN48695UC190X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- 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:
- 2
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- 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 (1.37x1.32)
FAN48695UC190X FAQ
1.How can I place an order for FAN48695UC190X through Aetrix?
Please submit a Request for Quotation (RFQ) for FAN48695UC190X 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 FAN48695UC190X reliable?
The price and inventory of FAN48695UC190X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FAN48695UC190X is usually 5 days.
3.What payment methods are accepted for FAN48695UC190X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FAN48695UC190X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FAN48695UC190X?
FAN48695UC190X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FAN48695UC190X 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 FAN48695UC190X?
For technical support, including FAN48695UC190X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FAN48695UC190X requirements.
6.How does Aetrix verify that FAN48695UC190X is sourced from the original manufacturer or authorized distributors?
All FAN48695UC190X 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 FAN48695UC190X meets industry standards.
7.What is the process for return or replacement of FAN48695UC190X?
All FAN48695UC190X units undergo pre-shipment inspection (PSI). If there is an issue with FAN48695UC190X, 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 FAN48695UC190X part is unused and in its original packaging.
Return procedure for FAN48695UC190X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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