FAN53555UC00X

$0.41

Description：IC REG BUCK PROG 5A 20WLCSP
Series：TinyBuck®
Mfr：Fairchild Semiconductor
Package：Bulk

SKU:af5bd6b1c767 Category: Voltage Regulators - DC DC Switching Regulators Brand: Fairchild Semiconductor

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Product introduction

FAN53555UC00X is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Fairchild Semiconductor. Its product description is IC REG BUCK PROG 5A 20WLCSP. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for FAN53555UC00X

Description：IC REG BUCK PROG 5A 20WLCSP
Series：TinyBuck®
Mfr：Fairchild Semiconductor
Package：Bulk
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Programmable
Number of Outputs：1
Voltage - Input (Min)：2.5V
Voltage - Input (Max)：5.5V
Voltage - Output (Min/Fixed)：0.6V
Voltage - Output (Max)：1.23V
Current - Output：5A
Frequency - Switching：2.4MHz
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：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for FAN53555UC00X

FAN53555UC00X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53555UC00X is a digitally programmable synchronous step-down DC-DC converter manufactured by Fairchild Semiconductor. It operates with an input voltage range of 2.5V to 5.5V and delivers up to 5A of output current. The device features a fixed switching frequency of 2.4MHz and supports an adjustable output voltage range from 0.6V to 1.23V. Packaged in a compact 20-WLCSP (1.96x1.56mm) format, it is designed for surface mount applications within an operating temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Digitally programmable output voltage via I2C-compatible interface
Synchronous rectification for high efficiency
Ultra-fast transient response capability
Compact WLCSP packaging for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

Portable media players
Smartphones and PDAs
Digital cameras
DSPs and microprocessors split supply systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix code against official datasheets to confirm the exact output voltage setting, as variations exist within the FAN53555 family. Confirm manufacturer status, as production may have transitioned between Fairchild Semiconductor and onsemi. Ensure compatibility with your system's I2C addressing requirements before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 5A output current is required in a minimal footprint. The 2.4MHz switching frequency allows for smaller external passive components compared to lower-frequency alternatives. Ensure the application requires digital voltage adjustment rather than fixed resistor programming. Verify that the 2.5V minimum input voltage aligns with the system power rail availability.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the TinyBuck series of digitally programmable regulators. It represents a higher-current variant compared to the 1A FAN5355 series, utilizing similar control architecture but scaled for more demanding load profiles. The technology emphasizes small solution size through high-frequency operation and integrated synchronous switches.