XC6505A251ER-G

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

The XC6505A251ER-G is a fixed-output low dropout regulator from Torex Semiconductor, providing a nominal output voltage of 2.5V with a maximum load current of 200mA. It operates within an input voltage range of 1.7V to 10.5V and features a typical quiescent current of 5.5µA. The device utilizes the USP-6C package and includes a Chip Enable (CE) function for power management. Electrical characteristics include a line regulation of 0.1%/V, a load regulation of 20mV, and a ripple rejection rate of 60dB at 1kHz. Built-in protections consist of a current limiter and thermal shutdown circuitry.

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

• Integrates a high-speed CMOS LDO regulator architecture with low power consumption and high accuracy.
• Features a Chip Enable (CE) pin that allows the circuit to enter stand-by mode via a low-level signal.
• Includes internal over-current protection and thermal shutdown circuits to safeguard against excessive load or temperature.
• Provides rapid output discharge to the VSS level when entering stand-by mode through internal resistive paths.

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

• Car navigation systems
• Car audio equipment
• Digital still cameras
• Camcorders

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

Verify the specific ordering suffix ER-G confirms the USP-6C package type and reel quantity. Ensure the 'A' designation matches system requirements regarding the absence of an internal capacitor discharge switch. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer before finalizing procurement plans.

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

Select this component for applications requiring a fixed 2.5V rail with minimal standby current draw. The USP-6C package is suitable for space-constrained designs. Verify that the required output capacitance meets phase compensation guidelines to prevent instability. Consider the thermal dissipation limits relative to the expected voltage drop and load current in the target application environment.

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

This part belongs to the XC6505 series of low-power, high-speed LDO regulators manufactured by Torex Semiconductor. The series offers various output voltages and packages, including SOT-25 and SOT-89-5. The 'A' variant specifically lacks the active capacitor discharge feature found in the 'B' series, relying instead on passive resistive discharge paths when disabled.

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

XC6505A251MR-G

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

How does the XC6505A251ER-G handle output discharge when disabled?

In stand-by mode, the output voltage returns to the VSS level through the internal resistors R1 and R2. Unlike the B-series, it does not utilize an active N-channel MOSFET for rapid discharge.

What are the protection mechanisms included in this regulator?

The device incorporates a current limiter circuit and a thermal shutdown circuit. These activate if the output current exceeds the limit level or if the junction temperature reaches the detection threshold.