XC6221A162MR-G

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

The XC6221A162MR-G is a fixed-output CMOS low dropout regulator manufactured by Torex Semiconductor. It provides a nominal output voltage of 1.60 V with a maximum continuous output current of 200 mA. The device operates within an input voltage range of 1.6 V to 6.0 V and features a typical dropout voltage of 160 mV at 100 mA load. It incorporates a CE control pin for active-high enable functionality without an internal pull-down resistor. The regulator achieves a typical ripple rejection rate of 70 dB at 1 kHz and maintains a supply current of 25 μA during operation.

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

• Integrates a reference voltage source, error amplifier, and fold-back current limiter for stable regulation and short-circuit protection.
• Features a CE (Chip Enable) function that allows the circuit to enter a standby state via a low-level signal input.
• Designed for high-speed response and low noise performance using phase compensation circuits compatible with low ESR ceramic capacitors.

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 package variant SOT-25 against the MR-G suffix in official distributor catalogs. Confirm the output accuracy class '2' (+/- 2% or +/- 30mV) matches the design requirements for the 1.60 V target. Ensure the absence of an internal CE pull-down resistor aligns with the system's logic level interface strategy.

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

Select this component when a fixed 1.60 V rail is required from a single-cell lithium battery or similar power source. The SOT-25 package offers a balance of thermal dissipation and board space efficiency compared to smaller footprints. Verify that the external capacitor values meet the phase compensation requirements specified in the datasheet for the selected output voltage.

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

This part belongs to the XC6221 series of high-accuracy, low-noise LDO regulators. The series utilizes laser trimming technology to set output voltages in precise increments. The 'A' designation indicates the absence of both an internal CE pull-down resistor and a CL auto-discharge switch, distinguishing it from B, C, and D sub-types within the same family.

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

XC6221A162GR-G

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

Does the XC6221A162MR-G include an internal pull-down resistor on the CE pin?

No, the 'A' type designation indicates that this specific model does not contain an internal pull-down resistor on the CE pin.

What is the minimum input voltage required for proper regulation?

The operating voltage range starts at 1.6 V, which corresponds to the nominal output voltage plus the necessary dropout voltage margin.