XC6501D451MR-G

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

The XC6501D451MR-G is a high-speed, low-noise CMOS LDO regulator manufactured by Torex Semiconductor. It provides a fixed output voltage of 4.5V with a maximum output current of 200mA. The device operates within an input voltage range of 1.4V to 6.0V and features internal phase compensation, allowing for stable operation without an external load capacitor (CL). It includes a CE pin that enables stand-by mode with current consumption below 0.1μA. The part is housed in a SOT-25-5 package.

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

• Internal phase compensation eliminates the need for an external output capacitor.
• CE pin controls ON/OFF state with ultra-low stand-by current consumption.
• Built-in CL auto-discharge function rapidly pulls VOUT to VSS level during shutdown.
• Fold-back current limit circuit provides short-circuit protection.

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

• Smart phones
• Portable games
• Wireless modules
• Bluetooth devices
• Digital-TV tuners

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

Verify the specific ordering suffix MR-G corresponds to the SOT-25 package and reel quantity as defined in the official datasheet. Confirm the D series designation indicates High Active CE logic with pull-down and CL discharge capabilities. Ensure environmental compliance requirements match the -G suffix specifications for halogen and antimony-free status.

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

Select this component when a fixed 4.5V output is required from a supply between 1.4V and 6.0V. The D series variant is appropriate if automatic output discharge upon shutdown is necessary. Verify that the 200mA current capability meets load demands and that the SOT-25 package fits the PCB layout constraints.

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

This part belongs to the XC6501 series of 200mA High Speed LDO Regulators. The series is characterized by its ability to operate stably without output capacitors due to internal phase compensation. The D type specifically integrates a CE pull-down resistor and an auto-discharge switch for the output capacitor, distinguishing it from other variants in the family.

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

XC6501C451MR-G: Same package and voltage but lacks CL discharge.

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

Does the XC6501D451MR-G require an external output capacitor?

No, the device utilizes internal phase compensation to ensure stable operation without an external load capacitor (CL).

What is the function of the CE pin on this regulator?

The CE pin allows the circuit to be put into stand-by mode by applying a low-level signal, reducing current consumption to less than 0.1μA.