XC6601B111PR-G

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

The XC6601B111PR-G is a low voltage input CMOS LDO regulator from Torex Semiconductor, housed in an SOT-89-5 package. It provides a fixed output voltage of 1.1V with ±20mV accuracy and supports up to 400mA output current. The device operates within a 1.0V to 3.0V input range and features a typical bias current of 25μA. Key electrical characteristics include a dropout voltage of approximately 75mV at 200mA, a ripple rejection ratio of 60dB at 1kHz, and a soft-start time of roughly 240μs. It includes built-in thermal shutdown, under-voltage lockout, and CL auto-discharge functions.

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

• Integrates a soft-start function to limit inrush current during startup.
• Features an internal auto-discharge switch for rapid output capacitor discharge upon shutdown.
• Includes comprehensive protection circuits such as current limiting, fold-back, and thermal shutdown.
• Compatible with ceramic output capacitors due to built-in phase compensation.

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

• Smart phones
• Portable game consoles
• Digital still cameras
• Mobile devices

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

Verify the specific ordering suffix PR-G confirms the SOT-89-5 package type and 1000-piece reel quantity. Ensure the B-series designation matches the requirement for no internal pull-down resistor on the CE pin. Confirm RoHS compliance status via the manufacturer's latest documentation before finalizing procurement specifications.

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

Select this component when a fixed 1.1V rail is required with high efficiency at low dropout voltages. The B-series variant is suitable for designs where the CE pin logic level is actively driven, avoiding the need for external pull-down resistors. Consider the SOT-89-5 package for applications requiring higher power dissipation capabilities compared to smaller surface-mount options.

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

This part belongs to the XC6601 series of low voltage input LDO regulators designed for portable electronic devices. The series utilizes laser trimming technology to achieve precise output voltage settings in 0.05V increments between 0.7V and 1.8V. The B-series specifically denotes variants without an internal pull-down resistor on the control pin, offering flexibility in system-level power management configurations.

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

XC6601A111PR-G

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

How does the XC6601B111PR-G handle output capacitor discharge?

The device includes a CL auto-discharge function that activates when the CE pin is pulled low, rapidly discharging the output capacitor through an internal N-channel transistor to prevent malfunction.

What is the difference between the A and B series regarding the CE pin?

The XC6601A series has an internal pull-down circuit on the CE pin, whereas the XC6601B series does not. The B series requires the CE pin voltage to be determined by external connections like VBIAS or VSS to ensure stable operation.