XC6220B15BER-G

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

The XC6220B15BER-G is a CMOS low dropout regulator from Torex Semiconductor. It provides a fixed output voltage of 1.55V with a maximum output current of 1A. The device operates within an input voltage range of 1.6V to 6.0V and features Green Operation for automatic switching between high speed and power save modes. Dropout voltage is 65mV at 300mA and 150mV at 1000mA. Supply current is typically 8μA in power save mode and 50μA in high speed mode. Ripple rejection ratio is 50dB at 1kHz. Operating temperature range is -40°C to +85°C.

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

• Green Operation function automatically switches between high speed and power save modes based on load current to minimize power consumption.
• Built-in CL auto-discharge circuit rapidly discharges the output capacitor when the IC is turned off via the CE pin.
• Integrated inrush current prevention circuit limits startup surge current to protect the system.
• Includes overcurrent protection and thermal shutdown circuits for enhanced reliability.

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

• Optical disk drives
• Magnetic disk drives
• Digital still cameras
• Camcorders
• Digital audio equipment

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

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type, CE pin configuration, and discharge functionality. Ensure the selected variant matches the required output voltage tolerance and operating temperature range for the target application environment.

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

Select this component for applications requiring a fixed 1.55V supply with high efficiency under varying loads. The Green Operation feature makes it suitable for battery-powered devices where standby current reduction is critical. Verify that the external ceramic capacitors meet the ESR requirements for stable phase compensation.

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

This part belongs to the XC6220 series of 1A LDO regulators. The 'B' designation indicates the absence of a CE pull-down resistor but includes CL auto-discharge capability. The 'ER-G' suffix specifies the USP-6C package and compliance with environmental standards.

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

XC6220B15BMR-G (SOT-25 package)

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

How does the Green Operation function affect the output voltage stability?

The Green Operation function switches the internal circuitry between high speed and power save modes based on the output current level. This switching occurs without affecting the regulated output voltage accuracy, which remains within specified tolerances across both modes.

What is the purpose of the CL auto-discharge feature in the XC6220B series?

The CL auto-discharge feature allows the output capacitor to be rapidly discharged through an internal N-channel transistor when the CE pin is set to a low level. This ensures the output voltage drops quickly to ground potential, preventing residual charge from affecting downstream circuits.