FAN53555UC24X

Description：IC REG BUCK PROG 4A 20WLCSP
Series：TinyBuck®
Mfr：onsemi
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:20dce87639d4 Category: Voltage Regulators - DC DC Switching Regulators Brand: onsemi

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Product introduction

FAN53555UC24X is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists onsemi. Its product description is IC REG BUCK PROG 4A 20WLCSP. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for FAN53555UC24X

Description：IC REG BUCK PROG 4A 20WLCSP
Series：TinyBuck®
Mfr：onsemi
Package：Tape & Reel (TR),Cut Tape (CT)
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)：0.603V
Voltage - Output (Max)：1.42V
Current - Output：4A
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 FAN53555UC24X

FAN53555UC24X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53555UC24X is a digitally programmable TinyBuck synchronous buck regulator manufactured by onsemi. It operates with an input voltage range of 2.5 V to 5.5 V and delivers a maximum output current of 4 A. The device features a fixed switching frequency of 2.4 MHz, enabling the use of small external inductors and capacitors. The adjustable output voltage ranges from 603 mV to 1.42 V. It is housed in a compact 20-WLCSP package measuring 1.96 mm by 1.56 mm. The component supports operation across a temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Digitally programmable output voltage via I2C interface for precise power rail configuration
Synchronous rectification architecture ensures high efficiency at light loads
Integrated soft-start mechanism limits inrush current during startup
Compact WLCSP footprint minimizes printed circuit board area requirements

Voltage Regulators - DC DC Switching Regulators Applications

Portable consumer electronics requiring efficient power management
Embedded systems utilizing low-voltage digital logic
Battery-powered devices needing extended operational runtime
Industrial control modules with space-constrained layouts

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix UC24X against official datasheets to confirm the 4 A output rating and 1.42 V maximum voltage limit. Confirm RoHS compliance status and lead times directly with authorized distributors or onsemi, as availability may vary by region. Ensure proper handling procedures are followed due to the fine-pitch wafer-level chip scale packaging.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 4 A output current is required within a minimal footprint. The 2.4 MHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Verify that the application environment stays within the specified -40°C to +85°C operating temperature range. Ensure the system design accommodates the 2.5 V to 5.5 V input voltage constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the TinyBuck family of digitally programmable regulators from onsemi. It shares architectural similarities with other models in the series but differs in output current capabilities and voltage limits. The UC24X variant specifically targets applications requiring higher current density than the 3 A variants while maintaining the same compact package style.