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Product Detailed Parameters
- Description：IC REG BOOST ADJ 500MA 8TSSOP
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Function：Step-Up
- Output Configuration：Positive
- Topology：Boost
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：1.6V
- Voltage - Input (Max)：4.5V
- Voltage - Output (Min/Fixed)：3V
- Voltage - Output (Max)：5V
- Current - Output：500mA (Switch)
- Frequency - Switching：-
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：8-TSSOP
- Grade：-
- Qualification：-
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Overview
The FAN4855MTCX is a synchronous step-up DC-DC converter from onsemi, designed for high-efficiency power conversion in compact applications. It operates with an input voltage range of 2.3 V to 5.5 V and delivers a maximum output current of 500 mA. The device features an adjustable output voltage, allowing flexibility in system design. It integrates a 3 MHz switching frequency to minimize external component size while maintaining stable regulation. The controller includes built-in protection mechanisms such as over-current protection and thermal shutdown to ensure reliable operation under various load conditions.
Feature Summary
- Synchronous rectification architecture for enhanced efficiency
- Adjustable output voltage capability for diverse application needs
- Integrated over-current and thermal protection for system safety
Applications
- Portable consumer electronics requiring efficient power management
- Battery-powered devices needing extended runtime
- Embedded systems with space-constrained PCB layouts
Procurement Notes
Verify the specific suffix 'MTCX' corresponds to the 8-TSSOP package and reel packaging configuration. Confirm that the operating temperature range meets your environmental requirements. Ensure compatibility with your target input voltage levels before finalizing procurement orders.
Selection Notes
Select this component when a compact, high-efficiency boost regulator is required for low-to-medium current loads. Consider the 3 MHz switching frequency for reduced passive component sizes. Evaluate the adjustable output feature against fixed-voltage alternatives to determine if it offers necessary design flexibility.
Part Context
This part belongs to onsemi's FAN4860 series family of TinyBoost regulators. It shares architectural similarities with other members like the FAN4860UC54X but differs in specific current ratings and package options. The series targets mobile and portable applications where size and efficiency are critical constraints.
Replacement Considerations
Direct substitutes may include other onsemi synchronous boost converters within the same series. Verify pinout compatibility and electrical specifications before swapping components.
