XC6505B191MR-G

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

The XC6505B191MR-G is a fixed-output low dropout regulator from Torex Semiconductor, providing a nominal output voltage of 1.9V 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 incorporates a chip enable function with an internal capacitor discharge circuit for rapid shutdown. Key electrical characteristics include a line regulation of 0.1%/V, a ripple rejection rate of 60dB at 1kHz, and a dropout voltage of 330mV at 100mA. It is housed in a SOT-25-5 package and supports an operating temperature range from -40°C to +105°C.

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

• Integrates an N-channel MOSFET for active output capacitor discharge upon shutdown
• Includes built-in overcurrent protection and thermal shutdown circuits
• Features high-speed transient response capabilities

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 part number against official manufacturer documentation to confirm pinout compatibility and package dimensions. Ensure that the selected ceramic input and output capacitors meet the recommended capacitance values to maintain stability. Confirm that the application environment remains within the specified operating temperature range and power dissipation limits.

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

Select this component when a fixed 1.9V supply is required with minimal standby power consumption. The integrated capacitor discharge feature makes it suitable for applications requiring fast power-down sequences. Verify that the input voltage source can provide sufficient headroom above the minimum operating threshold while staying within the absolute maximum ratings.

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

This device belongs to the XC6505 series of CMOS LDO regulators designed for low power consumption and high speed. The 'B' designation indicates the inclusion of a capacitor discharge function, distinguishing it from the 'A' series variant. The 'MR-G' suffix specifies the SOT-25 surface-mount package and compliance with environmental standards.

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

XC6505A191MR-G