FAN2504S27X

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

The FAN2504S27X is a micropower low-dropout voltage regulator manufactured by onsemi, utilizing CMOS technology. It provides a fixed output voltage of 2.7 V with a maximum continuous output current of 200 mA and a peak current capability of 300 mA. The device operates within an input voltage range of 2.7 V to 6.5 V. Key electrical characteristics include a ground pin current of 75 µA at full load, a dropout voltage of 200 mV at 200 mA, and thermal shutdown protection triggered at 150°C. It features an Enable/Shutdown control pin that reduces supply current to less than 1 µA when deactivated.

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

• Ultra-low power consumption with 75 µA ground current at full load
• Low dropout voltage performance of 200 mV at 200 mA output
• Integrated thermal limiting protection for overload conditions
• Enable/Shutdown control allowing output disable to less than 1 µA

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

• Cellular phones and accessories
• Portable cameras and video recorders
• Laptop, notebook and palmtop computers

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

Verify the specific suffix 'S27X' confirms the 2.7 V fixed output configuration and SOT-23-5 package. Confirm the manufacturer origin as Fairchild Semiconductor or onsemi, noting historical corporate transitions. Ensure the component meets RoHS compliance requirements if applicable to the target assembly. Cross-reference the ordering information table to validate the marking code AGJ against the specific part number variant.

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

Select this component for battery-powered portable applications requiring stable regulation with minimal quiescent current draw. The wide tolerance for external capacitor ESR simplifies design constraints compared to older LDO designs. Consider the 200 mA current limit when sizing for peak loads; ensure adequate PCB copper area is allocated to manage thermal resistance and prevent triggering the internal thermal shutdown circuitry during sustained high-current operation.

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

This device belongs to the FAN2504/FAN2505 family of 200 mA CMOS LDO regulators designed for cost-effective performance in GSM and TDMA cellular handsets and portable computers. The FAN2504 series distinguishes itself through Pin 4 functionality, offering either Adjustable voltage setting (ADJ) or Bypass noise reduction (BYP). This specific model utilizes the BYP function for optimal noise performance in fixed-voltage configurations.

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

The datasheet notes the FAN2504/05 family is pin-compatible with many popular older BiCMOS devices. Designers should verify pin assignments and electrical specifications against legacy components before substitution.