XC6901D621PR-G

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

The XC6901D621PR-G is a negative voltage CMOS regulator from Torex Semiconductor, providing a fixed output of -6.2V with a maximum current of 200mA. It operates within an input voltage range of -2.4V to -12.4V and features ON/OFF control via the CE pin. The device includes built-in protection circuits for overcurrent and thermal shutdown, along with a high-speed discharge function for the output capacitor.

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

• Negative voltage regulation with active-high CE control
• Built-in auto-discharge switch for rapid output capacitor discharge
• Foldback current limiting and thermal shutdown protection

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

• Negative power supplies
• Wireless LAN modules
• Digital still cameras
• Mobile devices and terminals

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

Verify the specific package type SOT-89-5 and the -G suffix indicating RoHS compliance when ordering. Confirm that the design supports the required input voltage range relative to the -6.2V output. Ensure proper PCB layout for heat dissipation given the power dissipation ratings in the datasheet.

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

Select this component for applications requiring a stable negative rail with low quiescent current. The D-type designation indicates a maximum operating temperature of 85°C. Verify that the load current does not exceed the 200mA limit under worst-case thermal conditions.

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

This part belongs to the XC6901 series of 200mA negative voltage regulators. The 'D' suffix denotes the 85°C temperature grade, while 'PR-G' specifies the SOT-89-5 package with halogen-free and RoHS-compliant construction. It is designed for portable electronics requiring efficient negative voltage generation.

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

XC6901D621MR-G (SOT-25 package)

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

How does the CE pin function affect the output voltage?

When the CE pin is at a low level or open, the regulator enters stand-by mode. An internal auto-discharge switch activates, rapidly discharging the output capacitor and pulling the -VOUT pin to the VSS level.

What happens during a short-circuit condition?

The foldback current limiter reduces the output current as the output voltage drops. If the junction temperature exceeds the detection threshold, the thermal shutdown circuit turns off the driver transistor to prevent damage.