XC6501B39A7R-G

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

The XC6501B39A7R-G is a high-speed, low-noise CMOS LDO regulator from Torex Semiconductor. It provides a fixed output voltage of 3.9V with a maximum output current of 200mA. The device operates within an input voltage range of 1.4V to 6.0V and features a typical dropout voltage of 150mV at 100mA. It consumes only 13μA of supply current during operation, reducing to less than 0.1μA in standby mode via the CE pin. The regulator includes internal phase compensation for stability without an output capacitor and incorporates CL auto-discharge functionality.

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

• Internal phase compensation allows stable operation without an external load capacitor (CL).
• Built-in CL auto-discharge switch rapidly discharges output capacitance when the control pin is set to low level.
• Fold-back current limit circuit provides short-circuit protection and limits output current.
• CE pin enables stand-by mode with ultra-low power consumption.

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

• Smart phones / Mobile phones
• Portable games
• Modules (wireless, camera, etc.)
• Bluetooth
• Digital-TV tuners

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

Verify the specific package type and order quantity against the datasheet designators. The suffix '7R-G' indicates the USPN-4 package with a reel quantity of 5,000 pieces. Confirm that the '-G' suffix aligns with environmental compliance requirements, specifically halogen and antimony-free status. Ensure the ordering code matches the required output voltage tolerance and series type B characteristics before finalizing procurement.

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

Select this component for applications requiring a fixed 3.9V rail with minimal quiescent current. The Series B designation ensures the inclusion of the CL auto-discharge feature, which is critical for systems needing rapid output voltage decay upon shutdown. Verify that the input voltage remains within the 1.4V to 6.0V range and that the thermal dissipation capabilities of the USPN-4 package are sufficient for the expected load conditions.

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

This part belongs to the XC6501 series of 200mA High Speed LDO Regulators. The Series B variant specifically integrates a CL auto-discharge function controlled by the CE pin, distinguishing it from Series A which lacks this discharge mechanism. The device is designed for portable electronics where space and power efficiency are paramount, offering stability without external output capacitors through internal phase compensation.

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

XC6501B39AMR-G

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

What is the function of the CL auto-discharge feature in the XC6501B series?

The CL auto-discharge feature uses an internal N-channel transistor to rapidly discharge the electric charge stored in the output capacitor (CL) when the CE pin is pulled to a low level, ensuring the VOUT pin quickly returns to the VSS level.

Does the XC6501B39A7R-G require an output capacitor for stability?

No, the device utilizes internal phase compensation, allowing it to operate stably without an external load capacitor (CL).