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Product Detailed Parameters
- Description：IC REG BOOST 5.4V 1A 6WLCSP
- Series：TinyBoost®
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Function：Step-Up
- Output Configuration：Positive
- Topology：Boost
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：2.3V
- Voltage - Input (Max)：4.5V
- Voltage - Output (Min/Fixed)：5.4V
- Voltage - Output (Max)：-
- Current - Output：1A (Switch)
- Frequency - Switching：3MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：6-UFBGA, WLCSP
- Supplier Device Package：6-WLCSP (1.23x0.88)
- Grade：-
- Qualification：-
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Overview
The FAN4860UC54X is a synchronous step-up DC-DC converter from onsemi's TinyBoost series. It operates with an input voltage range of 2.3V to 4.5V and provides a fixed output voltage of 5.4V at up to 200mA. The device integrates a 3MHz switching frequency, enabling the use of small external components. It features a WLCSP-6 package for compact board space savings. Quiescent current is specified at 60µA, supporting efficient power management in battery-powered applications.
Feature Summary
- Synchronous boost topology for high conversion efficiency
- Fixed 5.4V output configuration
- Compact WLCSP-6 footprint
- Integrated shutdown capability
Applications
- Portable consumer electronics
- Battery-powered devices
- Mobile communication modules
Procurement Notes
Verify the specific suffix 'UC54X' to confirm the fixed 5.4V output variant. Confirm RoHS compliance status through official datasheets or manufacturer declarations. Check for active lifecycle status as availability may vary by region. Ensure ESD handling protocols are followed during assembly due to the WLCSP package type.
Selection Notes
Select this component when a fixed 5.4V rail is required from a single-cell lithium battery source. The 3MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Verify that the 200mA load requirement does not exceed the device's continuous output current rating under expected thermal conditions.
Part Context
This part belongs to the FAN4860 family of TinyBoost regulators. These devices are designed for space-constrained portable applications requiring efficient voltage boosting from low input voltages. The family typically offers various output voltage options within the same pin-compatible or similar package formats.
Replacement Considerations
Consult official cross-reference lists for verified substitutes. Generic replacements may differ in quiescent current, switching frequency, or maximum output current. Ensure any alternative maintains compatibility with the 2.3V-4.5V input range and WLCSP-6 form factor.
