FAN1537DAX

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

The FAN1537DAX is a dual low dropout linear regulator from Fairchild Semiconductor, providing two independent output channels. It features one fixed 3.3V output and one adjustable output channel, each capable of delivering up to 1A of continuous current. The device utilizes an SO-8 surface-mount package. Key electrical characteristics include a typical load regulation of 0.05% and stability with low equivalent series resistance (ESR) output capacitors. It incorporates on-chip thermal limiting for protection.

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

• Dual output configuration with one fixed 3.3V rail and one adjustable voltage rail
• High current capability of 1A per output channel
• Integrated thermal limiting circuitry for operational safety
• Optimized for low dropout performance in low voltage applications

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

• Hard disk drives and optical storage media
• Post-regulation for switching power supplies
• ADSL and cable modem systems
• Motherboards requiring multiple supply rails

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

Verify the specific suffix 'DA' against the manufacturer's official documentation to confirm the exact pinout and internal configuration. Ensure that the selected output capacitors meet the low ESR requirements specified in the datasheet to maintain loop stability. Confirm that the thermal management design accommodates the maximum junction temperature limits under expected load conditions.

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

Select this component when a dual-rail solution is required with one fixed 3.3V supply and one customizable voltage level. It is suitable for designs prioritizing transient response and minimal input-to-output voltage differential. Consider the SO-8 package constraints regarding thermal dissipation and board space compared to through-hole alternatives like SPAK or DPAK variants.

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

This part belongs to the FAN1537 family of dual 1A low dropout regulators. The 'D' suffix typically denotes the SO-8 package variant within this series. Other members include the FAN1537BMPX in MLP-6 and FAN1537MA in TO-252 packages. The family is designed for high-efficiency linear regulation in portable and computing electronics.

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

Direct substitutes within the same family include FAN1537DA, FAN1537DB, and FAN1537DC, which share identical functional specifications but may differ in packaging or manufacturing lot details. Verify compatibility before substitution.