FAN53528BUC08X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53528BUC08X is a digitally programmable synchronous step-down DC-DC converter manufactured by Fairchild Semiconductor. It operates with an input voltage range of 2.7V to 5.5V and delivers up to 1A of output current. The device features a fixed switching frequency of 3MHz, enabling the use of compact passive components. Output voltage is adjustable via I2C interface, typically ranging from 0.75V to 1.975V depending on specific configuration. It integrates protection features including thermal shutdown and over-current protection within a small footprint package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Digitally programmable output voltage via I2C-compatible interface
• High-efficiency synchronous buck topology for low-power applications
• Fixed 3MHz switching frequency allows for miniaturized inductor solutions
• Integrated thermal and over-current protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• SmartReflex-compliant power supply systems
• Portable media players and digital cameras
• Cell phones and smart phones
• Micro DC-DC converter modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distribution channels due to potential obsolescence or counterfeiting risks associated with legacy Fairchild Semiconductor products. Confirm exact suffix specifications against official datasheets as packaging and revision levels may vary. Ensure compliance with RoHS directives if required for your specific manufacturing environment. Cross-reference part numbers carefully as similar models exist within the TinyBuck family.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this regulator for designs requiring precise digital voltage control and minimal board space. The 3MHz frequency is optimal for reducing passive component size compared to lower-frequency alternatives. Ensure the load current requirements do not exceed the 1A limit. Verify that the host controller supports the necessary I2C communication protocol for dynamic voltage scaling operations during system runtime.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the TinyBuck series of high-frequency, ultra-fast transient response synchronous step-down converters. Designed for low-power applications, it utilizes small, low-cost inductors and capacitors. The series is characterized by its ability to maintain high efficiency across varying load conditions while supporting smooth transitions between PWM and PFM modes for improved light-load performance.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consider the FAN5355 series for alternative sourcing if availability is constrained, noting differences in specific output current ratings and package options. Verify pin compatibility and electrical parameters before substitution. Other compatible regulators in the same family may offer updated manufacturing processes or revised feature sets.