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Product Detailed Parameters
- Description：IC REG BOOST PROG 1.5A 16WLCSP
- Series：TinyBoost®
- Mfr：Fairchild Semiconductor
- Package：Bulk
- 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)：3.3V, 3.49V
- Voltage - Output (Max)：-
- Current - Output：1.5A (Switch)
- Frequency - Switching：2.5MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-UFBGA, WLCSP
- Supplier Device Package：16-WLCSP (1.78x1.78)
- Grade：-
- Qualification：-
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Overview
The FAN48630BUC33X is a synchronous TinyBoost regulator manufactured by onsemi, formerly Fairchild Semiconductor. It operates as a boost switching voltage regulator with a fixed output of 3.3 V and a maximum switch current of 1.5 A. The device features a 2.5 MHz switching frequency and supports an input voltage range from 2.35 V to 5.5 V. It includes a bypass mode for low-noise applications and utilizes a 16-ball WLCSP package. The component functions within an operating temperature range of -40°C to +85°C.
Feature Summary
- Synchronous rectification topology for improved efficiency
- Integrated bypass mode for noise-sensitive circuits
- Compact wafer-level chip scale packaging
Applications
- Portable electronic devices requiring efficient step-up conversion
- Battery-powered systems needing stable 3.3V rails
- Noise-critical analog sections in mixed-signal designs
Procurement Notes
This component is officially listed as End-of-Life (EOL) by the manufacturer. Distribution channels indicate it is no longer actively sold or stocked. Verification of availability should focus on obsolete inventory sources rather than standard procurement channels. Designers must confirm lifecycle status before finalizing specifications.
Selection Notes
Select this part only if legacy compatibility is required, as it is discontinued. Verify that the fixed 3.3V output meets system requirements without need for programmability. Ensure the 1.5A current limit suffices for peak loads. Consider modern equivalents from the same family if new production is planned.
Part Context
Part of the TinyBoost series designed for space-constrained applications. Manufactured by onsemi following its acquisition of Fairchild Semiconductor assets. The BUC33X suffix denotes specific electrical characteristics including output voltage and package type within the broader FAN48630 family.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Due to the EOL status, alternative components from other manufacturers or newer generations within the same product line should be evaluated for functional equivalence.
