FAN53540UCX

Description：IC REG BUCK ADJ 5A 20WLCSP
Series：TinyBuck®
Mfr：onsemi
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:5de8c650521d Category: Voltage Regulators - DC DC Switching Regulators Brand: onsemi

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

Product introduction

FAN53540UCX 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 ADJ 5A 20WLCSP. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for FAN53540UCX

Description：IC REG BUCK ADJ 5A 20WLCSP
Series：TinyBuck®
Mfr：onsemi
Package：Tape & Reel (TR),Cut Tape (CT)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：2.7V
Voltage - Input (Max)：5.5V
Voltage - Output (Min/Fixed)：0.8V
Voltage - Output (Max)：4.95V
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 FAN53540UCX

FAN53540UCX

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53540UCX is a synchronous buck switching regulator IC from the TinyBuck series by onsemi. It provides an adjustable positive output voltage ranging from 0.8V to 4.95V with a maximum continuous output current of 5A. The device operates with an input voltage range of 2.7V to 5.5V and utilizes a fixed switching frequency of 2.4MHz. It is housed in a compact 20-WLCSP package measuring 1.96x1.56mm. The component supports operation across a temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Synchronous rectification architecture for high efficiency
Adjustable output voltage control via external resistors
Compact WLCSP footprint for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

Point-of-Load (POL) regulators
Cloud systems computing power distribution
General DC-DC conversion for portable electronics

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized channels as this part is officially discontinued. Check Product Change Notification documents for final purchase dates and last-time-buy deadlines. Ensure compatibility with existing PCB layouts before sourcing, as replacement availability may be limited.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 5A synchronous buck solution is required within a minimal footprint. The 2.4MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Verify that the load requirements do not exceed the 5A limit and that the input voltage remains within the specified 2.7V to 5.5V range.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the TinyBuck family of power management integrated circuits designed for mobile and embedded applications. It integrates high-side and low-side MOSFETs into a single package to minimize board space. The WLCSP packaging technology enables direct mounting close to the load for improved transient response.