FAN5355UC03X

$0.99

Description：IC REG BUCK PROG 1A 12WLCSP
Series：-
Mfr：onsemi
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:d41cbc0cfb0a Category: Voltage Regulators - DC DC Switching Regulators Brand: onsemi

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Product introduction

FAN5355UC03X 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 1A 12WLCSP. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for FAN5355UC03X

Description：IC REG BUCK PROG 1A 12WLCSP
Series：-
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)：2.7V
Voltage - Input (Max)：5.5V
Voltage - Output (Min/Fixed)：0.75V
Voltage - Output (Max)：1.54V
Current - Output：1A
Frequency - Switching：3MHz
Synchronous Rectifier：Yes
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：12-UFBGA, WLCSP
Supplier Device Package：12-WLCSP (2.23x1.46)
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for FAN5355UC03X

FAN5355UC03X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN5355UC03X is a synchronous step-down DC-DC converter from the TinyBuck family, designed for low-power applications. It supports output currents of up to 1 A and operates at a fixed switching frequency of 3 MHz. The device accepts an input voltage range of 2.7 V to 5.5 V and provides a digitally programmable output voltage from 0.75 V to 1.975 V with ±2% accuracy. It features I2C-compatible interface support up to 3.4 Mbps and pin-selectable configuration options. Packaged in a 12-bump CSP (WLCSP), it ensures excellent transient response and high efficiency.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Supports I2C-compatible digital programming interface for on-the-fly voltage adjustment
Integrates high-efficiency synchronous rectification with smooth PWM/PFM transition
Enables ultra-fast transient response using small external passive components

Voltage Regulators - DC DC Switching Regulators Applications

Cell phones and smart phones
Mobile graphic processors
LPDDR2 and memory modules
Netbooks and ultra-mobile PCs

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package integrity and moisture sensitivity level handling requirements prior to assembly. Ensure compatibility with existing I2C bus configurations and validate thermal performance within the specified operating temperature range during system integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this regulator for space-constrained designs requiring fast transient response and digital control. Consider the 3 MHz frequency for minimizing passive component size. Verify that the required output voltage falls within the 0.75 V to 1.975 V programmable range and that the load current does not exceed 1 A.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the FAN5355 series of TinyBuck regulators, optimized for portable electronics. It complements higher-current variants like the FAN53555 by offering a compact solution for moderate power loads. The series emphasizes digital programmability and small footprint, targeting mobile computing and communication devices.