XC6503B321MR-G

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

The XC6503B321MR-G is a fixed-output low dropout regulator from Torex Semiconductor, providing a nominal output voltage of 3.2V 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 specified temperature range. The device features internal phase compensation, allowing stable operation without external load capacitors. It incorporates comprehensive protection mechanisms including 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 system power management via logic level control
• Built-in CL discharge mechanism that rapidly pulls the output voltage to ground during standby
• Fold-back current limiting combined with thermal shutdown for robust fault protection

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

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

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

Verify the specific suffix MR-G corresponds to the SOT-25 package configuration required for your design. Confirm the B-series designation ensures the presence of the CL auto-discharge feature. Ensure the CE pin is properly biased to avoid unstable operation states as defined in the datasheet specifications.

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

Select this component when board space optimization is critical due to its capacitor-less operational capability. The inclusion of the chip enable pin makes it suitable for battery-powered applications requiring efficient standby modes. Verify that the 500mA output current meets the peak load requirements of the target application circuit.

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

This part belongs to the XC6503 series of CMOS LDO regulators manufactured by Torex Semiconductor. The series offers various output voltages and package options, including USP-4, SOT-25, and SOT-89 variants. The B-type specifically denotes a variant equipped with both the chip enable function and the CL discharge feature.

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

XC6503A321MR-G

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

Does the XC6503B321MR-G require an external output capacitor for stability?

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

What happens to the output voltage when the CE pin is set to a low level?

When the CE pin is low, the IC enters standby mode and actively discharges the stored charge at the output pin, pulling the voltage down to the VSS level.