XC6222B121PR-G

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

The XC6222B121PR-G is a fixed-output low dropout regulator manufactured by Torex Semiconductor. It provides a nominal output voltage of 1.2V with a maximum continuous output current of 700mA. The device operates within an input voltage range of 1.7V to 6.0V and features a typical dropout voltage of 420mV at 300mA load. Electrical performance includes a supply current of 100uA, ripple rejection of 65dB at 1kHz, and line regulation of 0.01%/V. Output voltage accuracy is specified at ±1% for voltages above 2.0V and ±0.02V for voltages at or below 2.0V. The component is housed in a SOT-89-5 surface-mount package.

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

• Integrated reverse current protection prevents flow from the output pin to the input pin when the output voltage exceeds the input voltage.
• Built-in chip enable function allows the circuit to enter a standby state with active high logic control.
• Internal auto-discharge switch rapidly pulls the output voltage to ground level upon deactivation.
• Includes over-current limiting and thermal shutdown circuits to protect against excessive load and temperature.

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

• USB Products
• CD/DVD/HDD drives
• Mobile phones
• Portable game consoles
• Camera modules

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

Verify the specific suffix PR-G confirms the SOT-89-5 package configuration. Confirm the middle digits 121 correspond to the required 1.2V fixed output voltage. Ensure the B series designation matches the required output voltage accuracy specifications. Check RoHS compliance status if environmental restrictions apply to the project requirements.

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

Select this component for applications requiring stable power delivery up to 700mA with minimal voltage drop. The integrated reverse current protection eliminates the need for external blocking diodes. Verify that the required output capacitor value meets the phase compensation minimums specified in the datasheet for the selected output voltage range.

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

This part belongs to the XC6222 series of high-speed CMOS voltage regulators. The series offers various fixed output voltages ranging from 0.8V to 5.0V in 0.05V increments. Different package options include USP-6C, SOT-25, and SOT-89-5. The series is designed for low noise and high ripple rejection performance suitable for portable electronic devices.

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

XC6222B121MR-G (SOT-25 package)

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

How does the reverse current protection function operate?

The internal circuit prohibits reverse current flow from the VOUT pin to the VIN pin when the output voltage is higher than the input voltage, protecting connected components such as batteries.

What happens to the output voltage when the CE pin is set to low?

When the CE pin receives a low signal, the entire circuit enters a stand-by state. The internal auto-discharge switch activates, discharging the electric charge at the output capacitor and quickly returning the VOUT pin to the VSS level.