XC6901D181ER-G

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

The XC6901D181ER-G is a negative voltage CMOS regulator from the XC6901 Series, manufactured by Torex Semiconductor. It provides a fixed output of -1.8V with a maximum output current of 200mA. The device operates within an input voltage range of -2.4V to -12.4V and supports an operating ambient temperature range of -40°C to +85°C for Type D. Key electrical characteristics include a typical supply current of 100µA, a dropout voltage of 190mV at 100mA, and a power supply rejection ratio (PSRR) of 45dB at 1kHz. The unit is housed in a USP-6C package.

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

• Includes ON/OFF control function via CE pin to enable stand-by mode
• Features built-in auto-discharge switch for rapid output capacitor discharge
• Incorporates over-current protection and thermal shutdown circuits
• Compatible with low ESR ceramic capacitors due to internal phase compensation

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 suffix ER-G confirms the USP-6C package and 3,000 units per reel configuration. Ensure the Type D designation aligns with the required maximum operating temperature of 85°C. Confirm RoHS compliance status as indicated by the -G suffix. Cross-reference the part number against official distributor catalogs to validate availability and authenticity before purchase.

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

Select this component when a stable negative rail is required for portable electronics. The fixed -1.8V output suits logic levels requiring negative bias. Consider the 200mA current limit and 100µA quiescent current for battery efficiency. The USP-6C package offers a compact footprint suitable for space-constrained PCB layouts compared to larger SOT packages.

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

This part belongs to the XC6901 series of 200mA negative voltage regulators. The series includes variants with different output voltages ranging from -0.9V to -12.0V. Other package options include SOT-25 and SOT-89-5. The 'D' type indicates an 85°C max operating temperature, while 'E' types support up to 105°C. All variants share similar protection features and control functions.

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

XC6901D181MR-G: Same electrical specifications but in SOT-25 package. XC6901D181PR-G: Same electrical specifications but in SOT-89-5 package. Verify pinout compatibility and thermal dissipation requirements when substituting between package types.