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Product Detailed Parameters
- Description：IC REG BOOST PROG 2.5A 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)：2.5V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：3.2V
- Voltage - Output (Max)：3.4V
- Current - Output：2.5A
- 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 FAN48623UC32JX is a synchronous TinyBoost regulator manufactured by onsemi, formerly Fairchild Semiconductor. It operates with an input voltage range of 2.35 V to 5.5 V and provides a fixed output voltage of 3.2 V. The device delivers a maximum output current of 2500 mA and features a bypass mode for direct power transfer. It integrates a 2.5 MHz switching frequency and maintains a low quiescent current of 55 uA. The component is housed in a WLCSP-16 package and functions within a temperature range of -40°C to +85°C.
Feature Summary
- Synchronous boost topology with integrated bypass mode
- High efficiency operation at 2.5 MHz switching frequency
- Low quiescent current consumption for battery preservation
- Compact WLCSP-16 package for space-constrained designs
Applications
- Portable electronic devices requiring efficient step-up regulation
- Battery-powered systems needing extended runtime
- Mobile communication equipment
- Consumer electronics with limited board space
Procurement Notes
Verify the manufacturer designation as onsemi due to corporate acquisition history. Confirm the specific suffix UC32JX corresponds to the 3.2V output variant. Ensure compatibility with WLCSP-16 assembly processes. Check for RoHS compliance documentation. Validate that the source document explicitly lists this part number rather than a generic family member.
Selection Notes
Select this component when a fixed 3.2V output is required from a single-cell lithium-ion or similar battery source. The high 2.5A current capability supports demanding loads. The bypass mode offers efficiency benefits when input voltage approaches output levels. Consider the WLCSP-16 footprint constraints during PCB layout. Compare against other FAN48623 variants if different output voltages are needed.
Part Context
This part belongs to the FAN48623 series of Synchronous TinyBoost regulators. The series includes various output voltage options identified by suffixes. The FAN48623UC32JX specifically denotes the 3.2V fixed output version. The product line emphasizes small form factor and high efficiency for portable applications.
Replacement Considerations
Other FAN48623 variants with different output voltages may serve as functional replacements if the voltage requirement changes. Verify pinout compatibility across the series. Cross-reference with onsemi's official substitution guide for confirmed equivalents.
