XC6501A181GR-G

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

The XC6501A181GR-G is a low dropout regulator from Torex Semiconductor. It provides a fixed output voltage of 1.8V with an accuracy of ±0.02V. The device operates within an input voltage range of 1.4V to 6.0V and supports a maximum output current of 200mA. It features a typical supply current of 13μA and stand-by current below 0.1μA. The regulator includes internal phase compensation, eliminating the need for an external output capacitor. Protection circuits include current limiting and short circuit protection.

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

• Internal phase compensation enables stable operation without requiring an external output capacitor.
• High-speed response characteristics ensure rapid stabilization during load and line transients.
• Integrated CE pin allows switching between active mode and ultra-low power stand-by mode.
• Fold-back current limit circuit protects against output short circuits and overcurrent conditions.

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

• Mobile phones (RF, Digital cash, I/O)
• Portable games
• Camera modules
• Wireless LAN modules
• Bluetooth

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

Verify that the ordering suffix GR-G confirms the USP-4 package type and Halogen/Antimony-free status. Confirm the 'A' designation indicates High Active CE control without pull-down or auto-discharge functions. Ensure the part number matches the specific 1.8V output requirement. Cross-reference the datasheet revision date to confirm electrical characteristics remain unchanged.

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

Select this component when a compact solution without external output capacitors is required. The USP-4 package offers space efficiency for portable designs. Verify that the 1.8V output aligns with downstream logic requirements. Consider the 13μA quiescent current for battery-operated applications. Ensure the input voltage remains above the minimum operating threshold plus dropout voltage.

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

This device belongs to the XC6501 series of output capacitor-less LDO regulators. The series utilizes CMOS technology to achieve high speed and low noise performance. The A-series variant specifically denotes High Active CE control without internal pull-down resistors or auto-discharge switches. This distinguishes it from B, C, and D variants which offer different standby discharge capabilities.

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

XC6501A181MR-G

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

Does the XC6501A181GR-G require an external output capacitor?

No, the device features internal phase compensation, allowing it to operate stably without an external output capacitor.

What is the function of the CE pin on the XC6501A variant?

The CE pin enables the circuit to enter stand-by mode when driven low. On the A variant, it is High Active without an internal pull-down resistor or auto-discharge switch.

How does the current limit circuit behave during a short circuit?

The fold-back current limit circuit reduces the output current to approximately 25mA when the output is shorted to VSS, protecting the device.