XC6503D331GR-G

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

The XC6503D331GR-G is a fixed-output low dropout regulator from Torex Semiconductor, providing a nominal output voltage of 3.3V with a maximum continuous current capability of 500mA. It operates within an input voltage range of 1.7V to 6.0V and maintains high accuracy across the operating temperature range of -40°C to +85°C. The device features internal phase compensation, allowing stable operation without an external load capacitor. Key electrical characteristics include a typical supply current of 15μA, a power supply rejection ratio of 55dB at 1kHz, and a dropout voltage of approximately 170mV at 300mA. It is housed in a USP-4 surface-mount package.

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 system power management via logic level control
• Built-in protection mechanisms including fold-back current limiting and thermal shutdown
• Low quiescent current consumption suitable for battery-powered portable applications

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

• Smart phones and mobile communication devices
• Portable game consoles
• Wireless and camera modules
• Bluetooth modules
• Digital TV tuner modules

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

Verify the specific suffix GR-G confirms the USP-4 package format and RoHS compliance status. Ensure the CE pin is properly biased to avoid unstable operation states. Confirm that the PCB layout accommodates the required thermal dissipation pad connections for the selected package type.

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

Select this component when a fixed 3.3V rail is required with moderate current demands up to 500mA. The D-series variant provides both pull-down resistance on the control pin and auto-discharge functionality for output capacitors. Consider the USP-4 package constraints regarding thermal performance and board space availability during integration.

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

This part belongs to the XC6503 series of CMOS LDO regulators designed for high-speed transient response and low power consumption. The series offers various output voltages and package options, with the D-type specifically engineered to include enhanced control features such as output discharge capabilities and internal pull-down resistors for reliable standby modes.

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

XC6503C331GR-G

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

How does the XC6503D series handle output capacitor discharge?

The XC6503D series includes an internal N-channel transistor that discharges stored charge from the output capacitor when the CE pin is driven low, allowing the output voltage to quickly return to the VSS level.

What is the behavior of the CE pin if left open?

Unlike other variants, the XC6503D series incorporates an internal pull-down resistor on the CE pin. If left open, the IC will default to the OFF state to prevent unstable operation.