XC6705A491MR-G

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

The XC6705A491MR-G is a high-speed LDO regulator IC from Torex Semiconductor, utilizing CMOS process technology. It provides a fixed output voltage of 4.9V with a maximum output current of 200mA. The device operates within an input voltage range of 3.5V to 20.0V and features a low supply current of 1.2µA. It includes built-in CL discharge functionality for rapid output capacitor discharge during standby mode. The component is housed in an SOT-25-5 package.

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

• Integrated CL discharge function using Nch FET to rapidly discharge output capacitors during standby mode.
• Soft-start circuitry suppresses inrush current and overshoot at startup.
• Built-in thermal shutdown and current limit protection circuits.
• Supports low ESR ceramic capacitors without external phase compensation.

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

• Smart meters
• Gas detectors
• Smoke detectors
• Sensor/IoT devices

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

Verify the specific suffix MR-G confirms the SOT-25 package type and reel packaging format. Confirm the A-type designation ensures the presence of the CL discharge feature. Ensure compliance with EU RoHS standards and check for halogen-free status before procurement.

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

Select this part when a fixed 4.9V output is required with minimal quiescent current consumption. The A-type variant is necessary if automatic load capacitor discharge is needed. Verify that the application environment stays within the -40°C to +105°C operating temperature range.

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

This component belongs to the XC6705 series of high-speed voltage regulators. The series offers various fixed output voltages ranging from 2.5V to 5.5V in 0.1V increments. The 'A' designation specifically indicates the inclusion of the CL discharge function, distinguishing it from the 'B' type which lacks this feature.

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

XC6705B491MR-G (Lacks CL discharge)

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

What is the purpose of the CL discharge function?

The CL discharge function uses an internal Nch FET to quickly discharge the charge stored in the output stabilization capacitor when the device enters standby mode, preventing system malfunctions.

How does the soft-start function operate?

Upon receiving a high signal on the CE pin, the soft-start function linearly increases the reference voltage over approximately 1.0ms, allowing the output voltage to rise smoothly and suppressing inrush current.