XC6901D891PR-G

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

The XC6901D891PR-G is a negative voltage CMOS regulator from Torex Semiconductor, providing a fixed output of -8.9V 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. It utilizes SOT-89-5 packaging and supports ceramic capacitors.

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

• Includes an ON/OFF control function that enables stand-by mode and activates an internal auto-discharge switch to rapidly return the output to ground level.
• Features foldback current limiting and thermal shutdown circuits to protect against excessive load currents and overheating conditions.
• Capable of stable operation using low ESR ceramic capacitors due to integrated phase compensation circuitry.

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 and output voltage designation during procurement. Confirm compliance with RoHS standards and ensure the ordering suffix matches the required reel quantity. Cross-reference the manufacturer part number with distributor listings to confirm availability and authenticity before finalizing orders.

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

Select this component when a fixed negative voltage rail is required for portable electronics. Ensure the input voltage remains within the specified operational limits relative to the output. Consider the thermal dissipation capabilities of the SOT-89-5 package under maximum load conditions to maintain reliability.

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 and packages, including SOT-25, SOT-89-5, and USP-6C. The 'D' designation indicates a maximum operating temperature of 85°C, while the 'PR-G' suffix specifies the SOT-89-5 package with halogen-free compliance.

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

XC6901D891MR-G

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

How does the CE pin function affect the output voltage?

When the CE pin receives a low-level signal or is left open, the regulator enters stand-by mode. An internal P-channel MOSFET discharges the output capacitor, causing the -VOUT pin to quickly return to the GND level.

What protection mechanisms are included in this regulator?

The device incorporates a foldback current limit circuit to restrict output current during short-circuit conditions and a thermal shutdown circuit that turns off the driver transistor if the junction temperature exceeds the detection limit.