FAN2513S33X

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

The FAN2513S33X is a fixed-output linear voltage regulator manufactured by onsemi (formerly Fairchild Semiconductor). It provides a stable 3.3V output with a maximum continuous current of 150mA. The device operates within an input voltage range up to 6.5V and features a typical dropout voltage of 0.18V at full load. Key electrical specifications include a quiescent current of 50 µA, power supply rejection ratio of 43dB at 120Hz, and line regulation of 0.3%/V. It is housed in a compact SOT-23-5 surface-mount package.

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

• CMOS LDO architecture designed for low noise and fast transient response
• Integrated enable pin for precise power management control
• Built-in thermal protection safeguards against overheating conditions
• Fixed output voltage configuration eliminates external feedback components

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

• Portable battery-powered electronic devices requiring efficient power regulation
• Embedded systems utilizing microcontrollers and memory modules
• Communication equipment needing stable low-noise voltage supplies
• Industrial control boards operating within wide temperature ranges

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

This component has been officially discontinued and is no longer in production. Verification of availability should focus on surplus distributors or stock clearance channels rather than standard manufacturing pipelines. Buyers must confirm the authenticity of existing inventory through authorized supply chain partners. Cross-reference with equivalent replacement parts is strongly recommended for new designs to ensure long-term supply stability and compatibility.

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

Engineers selecting this part should consider its specific 3.3V fixed output and 150mA current limit when designing power rails. The SOT-23-5 package requires adequate thermal consideration due to its small footprint. Designers must verify that the input voltage does not exceed the 6.5V maximum rating under all operating conditions. Since the part is obsolete, alternative solutions with similar pinouts and performance characteristics should be evaluated for future-proofing.

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

The FAN2513 series represents a family of low-dropout regulators known for their CMOS efficiency and compact form factor. This specific model belongs to the legacy Fairchild Semiconductor portfolio, now managed by onsemi. It was widely used in consumer electronics and industrial applications prior to its discontinuation. The series is characterized by high PSRR and low quiescent current, making it suitable for noise-sensitive analog circuits.

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

MIC5255-3.3YM5-TR by Microchip Technology is a confirmed substitute part number.