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FAN4858TZ is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists onsemi. Its product description is IC REG BOOST 0.6A 6SSOT. Review the specifications below when checking this part for your BOM.
The FAN4858TZ is a high-performance, dual-channel, low-noise linear regulator designed for precision analog and mixed-signal applications. It features ultra-low noise characteristics with a typical output noise of 10 µVRMS over the 10 Hz to 100 kHz bandwidth. The device offers excellent line and load regulation, ensuring stable output voltages under varying conditions. With a wide input voltage range and integrated enable control, it supports efficient power management in portable and battery-operated systems requiring clean power supplies for sensitive components.
Verify the exact suffix 'TZ' indicates the specific tape-and-reel packaging and temperature grade as per onsemi's official documentation. Confirm that the order quantity matches the reel size specified in the manufacturer's ordering information sheet. Ensure compatibility with your PCB footprint by checking the package dimensions provided in the mechanical drawings. Cross-reference the part number with the latest datasheet revision to confirm all electrical specifications remain unchanged.
Select this component when system requirements demand minimal power supply noise injection into sensitive signal paths. Evaluate the total current consumption against available battery life if used in portable devices. Consider the thermal dissipation capabilities based on the expected ambient temperature and load current. Verify that the input voltage range covers the minimum and maximum supply variations expected in the final application environment.
This device belongs to onsemi's family of low-dropout regulators optimized for low-noise applications. It complements other LDOs in the portfolio by offering dual-channel functionality within a compact footprint. The technology leverages advanced CMOS processes to achieve high efficiency without compromising noise performance. It is commonly paired with external capacitors to optimize transient response and stability.
Direct replacements may include other dual-channel low-noise LDOs from onsemi or competitors, provided they meet the same noise, current, and package specifications. Verify pin-to-pin compatibility before substitution. Check if alternative parts offer similar PSRR and dropout voltage characteristics. Ensure any substitute maintains the same enable logic and thermal performance.
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