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Product Detailed Parameters
- Description：IC REG BUCK BST 3.3V 2A 20WLCSP
- Series：TinyPower™
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck-Boost
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：2.5V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Current - Output：2A
- Frequency - Switching：1.8MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-UFBGA, WLCSP
- Supplier Device Package：20-WLCSP (1.96x1.56)
- Grade：-
- Qualification：-
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Overview
The FAN49100AUC330X is a TinyPower synchronous buck-boost DC-DC regulator from onsemi. It operates with an input voltage range of 2.5V to 5.5V and provides a fixed 3.3V output at up to 2A. The device integrates a 1.8MHz switching frequency, synchronous rectification for high efficiency, and thermal shutdown protection. Packaged in a compact 20-UFBGA (WLCSP) format, it supports operation across a temperature range of -40°C to +85°C.
Feature Summary
- Synchronous buck-boost topology enables efficient power conversion across wide input voltage variations relative to the output level.
- Integrated 1.8MHz switching frequency allows for the use of small external passive components to minimize solution size.
- Fixed 3.3V output configuration simplifies design implementation for standard logic supply rails.
Applications
- Portable battery-powered devices requiring stable voltage from varying cell levels
- Industrial control systems needing robust power regulation in noisy environments
- Automotive infotainment and sensor modules operating within specified voltage ranges
Procurement Notes
Verify the specific suffix 'AUC330X' confirms the fixed 3.3V output variant and WLCSP package type. Ensure compatibility with the target PCB footprint for the 20-UFBGA package. Confirm that the application's input voltage profile remains within the 2.5V to 5.5V operational limits to guarantee performance and reliability standards defined by the manufacturer.
Selection Notes
Select this component when a single-stage buck-boost solution is required to handle input voltages that may rise above or fall below the desired 3.3V output. The 2A current capability suits moderate load applications. Consider the WLCSP package constraints for thermal management and board space. Verify that the 1.8MHz frequency aligns with EMI requirements and available inductor sizes for the specific design.
Part Context
Part of the TinyPower series, designed for space-constrained portable electronics. This family emphasizes high integration and efficiency in small footprints. The FAN49100 variant specifically addresses applications where input voltage fluctuates significantly around the output voltage, eliminating the need for separate buck or boost stages.
Replacement Considerations
Check for direct pin-compatible alternatives within the same TinyPower series offering similar current ratings and fixed output voltages. Verify that any substitute maintains the 20-UFBGA package dimensions and electrical characteristics such as switching frequency and input voltage range.
