XC6503C40APR-G

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

The XC6503C40APR-G is a fixed-output CMOS LDO regulator from Torex Semiconductor, providing a nominal output voltage of 4.0V with ±1% accuracy. It supports a maximum output current of 500mA within an input voltage range of 1.7V to 6.0V. The device operates without an external load capacitor due to internal phase compensation. Key electrical characteristics include a typical supply current of 15μA and a dropout voltage of approximately 210mV at 300mA. It features fold-back current limiting, short-circuit protection, and thermal shutdown.

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

• Capacitor-less stability achieved through integrated internal phase compensation circuitry
• Integrated chip enable function for power management via low-level control signal
• Built-in protection mechanisms including fold-back current limit and thermal shutdown

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

• Smart phones and mobile phones
• Portable game consoles
• Wireless modules
• Camera modules
• Bluetooth modules

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

Verify the specific ordering suffix against official documentation to confirm package type and environmental compliance. Ensure the selected variant matches the required CE pin logic behavior and output voltage tolerance specifications for the target application design.

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

Select this component when a fixed 4.0V rail is required with high speed transient response. The C-series designation indicates a pull-down resistor on the CE pin, preventing unstable operation if the pin is left open. Verify that the PCB layout accommodates the SOT-89-5 package dimensions and thermal requirements.

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

This part belongs to the XC6503 series of CL capacitor-less LDO regulators. The 'C' in the model number identifies it as a variant with a built-in pull-down resistor on the Chip Enable pin. It is distinct from the P-series which lacks the CE pin entirely.

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

XC6503C401PR-G

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

What is the default state of the CE pin?

The XC6503C series includes a pull-down resistor on the CE pin, causing the IC to remain in the OFF state if the pin is left open.

Does this regulator require an output capacitor?

No, the XC6503 series is designed to be stable without an external load capacitor (CL) due to internal phase compensation.