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Product Detailed Parameters
- Description：IC REG BOOST 5V 1A 9WLCSP
- Series：TinyBoost®
- Mfr：Fairchild Semiconductor
- Package：Bulk
- Function：Step-Up
- Output Configuration：Positive
- Topology：Boost
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：2.7V
- Voltage - Input (Max)：4.5V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Current - Output：1A
- Frequency - Switching：-
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：9-UFBGA, WLCSP
- Supplier Device Package：9-WLCSP (1.22x1.22)
- Grade：-
- Qualification：-
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Overview
The FAN48617UC50X is a fixed-output synchronous TinyBoost regulator manufactured by onsemi. It operates with an input voltage range of 2.7 V to 4.5 V and provides a fixed 5 V output at up to 1 A. The device features a switching frequency of 2.3 MHz and low quiescent current of 45 uA. It is housed in a compact 9-WLCSP package (1.22x1.22 mm) and functions within a temperature range of -40°C to +85°C.
Feature Summary
- Synchronous rectification for improved efficiency
- Fixed 5 V output configuration
- Compact WLCSP packaging
Applications
- Portable electronic devices requiring step-up conversion
- Battery-powered systems needing stable 5 V rails
- Space-constrained mobile applications
Procurement Notes
Verify the manufacturer designation, as this component is currently produced by onsemi following industry consolidation. Confirm the specific suffix UC50X corresponds to the 5 V fixed output variant. Ensure compatibility with the 9-WLCSP footprint during sourcing. Check for end-of-life notices or alternative recommendations from the supplier if long-term availability is required.
Selection Notes
Select this component when a fixed 5 V output is required from a single-cell lithium-ion battery source. The 1 A output current capability suits moderate load applications. The small 9-WLCSP package is ideal for designs with strict board space limitations. Consider the 2.3 MHz switching frequency for balancing component size and noise performance.
Part Context
This part belongs to the TinyBoost family of synchronous boost regulators. It is designed for portable applications where high efficiency and small footprint are critical. The device integrates the power switch and control logic into a minimal package, reducing external component count compared to asynchronous solutions.
Replacement Considerations
The FAN48619UC50X is a related model in the same series with similar specifications but may differ in specific electrical characteristics or pinout details. Verify functional equivalence before substitution.
