XC6901D791PR-G

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

The XC6901D791PR-G is a negative voltage CMOS regulator from Torex Semiconductor, providing a fixed output of -7.9V with a maximum output 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 ON/OFF control capability
• Built-in auto-discharge switch for rapid output capacitor discharge
• Integrated foldback current limit 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 active-high logic level required for the CE pin operation. Ensure input and output capacitors meet the ceramic compatibility requirements specified in the datasheet for stable phase compensation.

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

Select this component for applications requiring a fixed negative rail with low quiescent current. The D-type designation indicates a maximum operating temperature of 85°C. Verify that the system's input voltage remains within the specified limits to ensure proper dropout performance and regulation accuracy under varying load 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 a reel quantity of 1,000 units. The series is designed for portable electronics requiring efficient power management with minimal standby consumption.

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

XC6901D791MR-G (SOT-25 package)

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

How does the CE pin affect the output voltage?

When the CE pin is at a high level (+1.2V to +3.6V), the regulator is active. When low or open, it enters stand-by mode, and the internal auto-discharge switch rapidly pulls the -VOUT pin to the VSS level.

What happens during a short-circuit condition?

The foldback current limit circuit activates to reduce the output current, protecting the device. If the junction temperature exceeds the detection limit, the thermal shutdown circuit turns off the driver transistor until the temperature falls below the release threshold.