XC6503A391GR-G

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

The XC6503A391GR-G is a fixed-output CMOS LDO regulator from Torex Semiconductor, providing a nominal output voltage of 3.9V with an accuracy of ±1%. It supports a maximum output current of 500mA and operates within an input voltage range of 1.7V to 6.0V. The device features internal phase compensation for capacitor-less stability, low power consumption with a typical supply current of 15μA, and includes protection circuits such as current limiting and thermal shutdown. It is housed in a USP-4 package.

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

• Capacitor-less operation enabled by internal phase compensation
• Integrated chip enable function for system power management
• Built-in fold-back current limiter and thermal shutdown protection

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 GR-G confirms the USP-4 package format and 3000-piece reel quantity. Ensure the design accounts for the A-series CE pin behavior, which lacks an internal pull-down resistor compared to C/D series variants. Confirm RoHS compliance status matches project requirements before finalizing procurement.

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

Select this component when a fixed 3.9V rail is required with high accuracy. The A-series variant is suitable for designs where the CE pin logic is actively driven, as it does not include an internal pull-down resistor. Consider the USP-4 package size constraints and ensure adequate thermal dissipation on the PCB for the specified power ratings.

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

This part belongs to the XC6503 series of CL capacitor-less LDO regulators. The 'A' designation indicates the inclusion of a Chip Enable (CE) control pin without an internal pull-down resistor. The 'GR-G' suffix specifies the USP-4 surface mount package and Halogen-free/RoHS compliant construction.

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

XC6503B391GR-G

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

Does the XC6503A series require an external capacitor for stability?

No, the XC6503 series utilizes internal phase compensation, allowing it to operate stably without an external load capacitor.

What is the state of the CE pin if left open in the XC6503A series?

Leaving the CE pin open results in unstable operation; it must be connected to a defined voltage level.