FAN1582DX

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The FAN1582DX is an adjustable positive low-dropout (LDO) linear voltage regulator manufactured by Fairchild Semiconductor. It operates within an output voltage range of 1.237 V to 5.7 V and supports a maximum output current of 3 A. The device features a typical dropout voltage of 0.6 V, ensuring efficient performance under varying load conditions. Packaged in a TO-252 (PSSO5) surface-mount format, it includes integrated protection mechanisms against overcurrent and thermal overload. The regulator maintains line regulation at 0.064 %/V and load regulation at 0.4 %, with a maximum operating junction temperature of 125 °C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Adjustable output voltage capability spanning from 1.237 V to 5.7 V for flexible system design
• Low dropout characteristic enabling stable regulation with minimal input-to-output voltage differential
• Integrated thermal shutdown and current limiting protection to safeguard the component during fault conditions

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Portable battery-powered equipment requiring efficient power management
• Cellular phones and wireless communication devices
• Personal digital assistants (PDAs)
• Laptop computers and mobile computing platforms

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific manufacturer designation, as Fairchild Semiconductor's power management division was acquired by onsemi. Confirm that the part number corresponds to the original Fairchild production run rather than subsequent onsemi manufacturing batches. Ensure the package marking and date code align with the required supply chain specifications for your assembly process.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a high-current adjustable LDO is required for space-constrained applications. The TO-252 package provides adequate thermal dissipation for 3 A loads without excessive heatsinking. Consider the 0.6 V dropout specification to determine the minimum required input voltage headroom relative to the desired output level.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

The FAN1582DX belongs to the FAN1582 series of low-dropout regulators designed for portable electronics. This family emphasizes high efficiency and compact footprint, utilizing advanced bipolar processes to achieve low quiescent current and robust transient response. The series is optimized for applications where battery life and board space are critical constraints.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Check for equivalents within the FAN1582 family, such as fixed-voltage variants or different package options like the MX suffix. Verify pin compatibility and thermal characteristics if substituting with parts from other manufacturers offering similar 3 A adjustable LDOs.