XC6601A101MR-G

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

The XC6601A101MR-G is a low voltage input CMOS LDO regulator manufactured by Torex Semiconductor. It provides a fixed output voltage of 1.0V with an accuracy of ±20mV. The device supports a maximum output current of 400mA and operates within an input voltage range of 1.0V to 3.0V. Key electrical parameters include a typical bias current of 25μA, a standby current of 0.10μA, and a dropout voltage of 38mV at 100mA. It features built-in soft-start, thermal shutdown, and under-voltage lockout functions.

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

• Built-in soft-start function reduces inrush current during startup to stabilize the input voltage.
• Integrated CL auto-discharge circuit rapidly discharges output capacitor charge when disabled.
• Includes overcurrent protection via current limiter and fold-back circuits for short-circuit safety.
• Thermal shutdown circuit protects the driver transistor from overheating at high junction temperatures.

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 suffix MR-G indicates SOT-25 packaging with 3,000 pieces per reel. Confirm the 'A' series designation ensures the presence of internal pull-down circuitry on the CE pin. Ensure the ordering code matches the required 1.0V output voltage specification before finalizing procurement orders.

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

Select this component for applications requiring stable regulation from low input voltages. The A-series variant is suitable where logic levels are fixed without external resistors due to internal pull-downs. Verify that the VBIAS pin receives sufficient voltage headroom relative to the output voltage to maintain optimal dropout performance.

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

This part belongs to the XC6601 series of low voltage input LDO regulators. The series utilizes laser trimming technology to achieve precise output voltage settings in 0.05V increments. It is designed for portable electronics requiring efficient power management with minimal quiescent current consumption.

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

XC6601B101MR-G is a functional substitute within the same package, though it lacks the internal CE pull-down resistor found in the A-series.

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

How does the soft-start function operate?

The soft-start function limits the inrush current from VIN to VOUT when charging the output capacitor, stabilizing the input voltage during startup.

What is the purpose of the CL auto-discharge feature?

It allows the IC to quickly discharge the electric charge stored in the output capacitor (CL) when the CE pin is pulled low, preventing malfunction upon re-enablement.