XC6901D641PR-G

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

The XC6901D641PR-G is a negative voltage CMOS regulator from the XC6901 series, manufactured by Torex Semiconductor Ltd. It provides a fixed output of -6.4V with a maximum output current of 200mA. The device operates within an input voltage range of -2.4V to -12.4V and features an ON/OFF control function via the CE pin. It includes built-in protection circuits for overcurrent and thermal shutdown, along with a high-speed discharge feature for the output capacitor.

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

• Includes an ON/OFF control function that enables stand-by mode when the CE pin receives a low-level signal.
• Features an internal auto-discharge switch that rapidly discharges the output capacitor charge upon entering stand-by mode.
• Incorporates foldback current limiting and thermal shutdown circuits to protect against excessive load currents and overheating.

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 temperature rating Type D (max 85°C) corresponding to the 'D' designator in the part number. Confirm the '-G' suffix indicates RoHS compliance and halogen/antimony-free status. Ensure the ordering suffix matches the required reel quantity of 1,000 units per manufacturer standard packaging.

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

Select this component for applications requiring a stable negative rail with precise voltage regulation. The fixed -6.4V output eliminates external resistor networks. Consider the 200mA current capability and dropout characteristics relative to the minimum input voltage. The integrated soft-start and fast discharge functions simplify circuit design for portable electronics requiring efficient power management.

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

This part belongs to the XC6901 series of 200mA negative voltage regulators. The series offers various fixed output voltages ranging from -0.9V to -12.0V. It is available in multiple packages including SOT-25, SOT-89-5, and USP-6C. The series is designed for low power consumption and high reliability in battery-powered consumer electronics.

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

Other parts in the XC6901 series with different output voltages or packages may serve as functional substitutes if electrical parameters align. Verify compatibility regarding the CE pin logic and thermal performance before substitution.

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

How does the XC6901D641PR-G handle output capacitor discharge?

When the CE pin is set to a low level, an internal P-channel MOSFET and discharge resistance automatically discharge the charge on the output capacitor, quickly returning the -VOUT pin to the VSS level.

What is the operating condition for the CE pin?

The CE pin is active high. A high-level signal (between +1.2V and +3.6V) turns the regulator on, while a low-level signal (GND) or open state activates the stand-by mode due to the built-in pull-down resistor.