FAN2518S285X

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

The FAN2518S285X is a micropower low-dropout (LDO) voltage regulator from the Fairchild Semiconductor FAN2518/19 family, manufactured using CMOS technology. It provides a fixed positive output voltage of 2.85V with a maximum output current capability of 50mA. The device operates within an input voltage range up to 6.5V and features a typical dropout voltage of 2.5mV at light loads, rising to a maximum of 75mV under full load conditions. It maintains a line regulation of 0.3%/V and load regulation of 2%, ensuring stable performance across varying conditions. The component supports a junction temperature range from -40°C to +125°C and is housed in a compact SOT-23-5 surface-mount package.

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

• Utilizes CMOS technology for cost-effective micropower performance suitable for portable applications
• Provides fast start-up time to minimize power-on delays in system initialization
• Features low dropout voltage characteristics to maximize battery life in mobile devices
• Offers fixed output configuration with high accuracy for sensitive circuitry

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

• GSM mobile phone power management systems
• TDMA communication device voltage regulation
• Battery-powered portable electronic equipment
• Microwave and wireless communication subsystems

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

Verify that the received components match the exact part number FAN2518S285X and confirm RoHS compliance status as indicated in official documentation. Ensure the packaging integrity remains intact to prevent damage to the delicate SOT-23-5 leads during handling. Cross-reference the manufacturer marking with onsemi or Fairchild Semiconductor branding records to authenticate the source. Request relevant test reports or datasheets if specific batch traceability is required for quality assurance protocols.

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

Select this component when a fixed 2.85V supply is required for CMOS-based logic or RF circuits in space-constrained designs. The SOT-23-5 package offers a small footprint ideal for dense PCB layouts. Consider the 50mA current limit against peak load demands to ensure adequate headroom. The wide operating temperature range makes it suitable for industrial or automotive environments where thermal stability is critical for consistent voltage regulation performance.

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

This LDO belongs to the FAN2518/19 series designed specifically for mobile communications. The family shares architectural similarities but differs in output voltage and current ratings. The FAN2518 variant typically supports lower currents compared to the FAN2519 series. These regulators were developed to meet the stringent power efficiency requirements of second-generation cellular handsets, balancing size, cost, and electrical performance.

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

Check for direct pin-compatible alternatives within the same FAN251x family if voltage or current specifications differ. Verify that any substitute maintains the same SOT-23-5 package outline and thermal characteristics. Confirm that the replacement device meets the same line and load regulation standards to ensure circuit compatibility without redesign.