XC6503D491PR-G

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

The XC6503D491PR-G is a fixed-output low-dropout (LDO) voltage regulator manufactured by Torex Semiconductor. It provides a fixed output voltage of 4.9 V with a maximum output current of 500 mA. The device operates within an input voltage range of 1.7 V to 6 V and features a typical power supply rejection ratio (PSRR) of 55 dB at 1 kHz. Quiescent current is specified at 15 µA, and line regulation is 0.1 %/V. Load regulation is typically 20 mV. The regulator includes overcurrent protection and thermal shutdown, operating reliably from -40°C to +85°C in an SOT-89-5 package.

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

• Capless design eliminates the need for external output capacitors
• Integrated overcurrent protection and thermal shutdown circuits
• High-speed response characteristics for stable operation

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

• Battery-powered portable electronic devices
• Communication equipment requiring stable voltage rails
• General-purpose power management in consumer electronics

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

Verify the specific suffix 'PR-G' corresponds to the reel packaging configuration as indicated in distributor specifications. Confirm that the SOT-89-5 pinout matches the target PCB footprint. Ensure the required output voltage of 4.9 V is available in the exact variant needed, as the XC6503 series offers numerous fixed voltage options. Cross-reference the manufacturer part number directly with official Torex documentation to avoid substitution errors.

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

Select this component when a fixed 4.9 V output is required with up to 500 mA load capability. The low quiescent current of 15 µA makes it suitable for battery-operated applications where standby power consumption is critical. The capless architecture simplifies board layout by reducing component count. Verify that the input voltage remains within the 1.7 V to 6 V range during all operating conditions to ensure proper regulation and stability.

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

This part belongs to the XC6503 series of high-speed LDO regulators from Torex Semiconductor. The series is characterized by its ability to operate without external output capacitors, offering stability across a wide range of load conditions. The 'D' in the part number typically denotes the SOT-89-5 package type, while the '491' indicates the fixed 4.9 V output voltage setting. The series is designed for applications requiring compact solutions and efficient power management.

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

XC6503D491MR-G: Alternative package variant (SOT-25-5) with identical electrical specifications.