XC6401 Series

High Speed Dual LDO Regulator

Offering low output noise, high ripple rejection ratio, low dropout and very fast turn-on times, the XC6401 series is ideal for today's cutting edge mobile phone and Bluetooth applications.

Internally the XC6401 includes a reference voltage source, error amplifiers, driver transistors, current limiters and phase compensators. The XC6401 's current limiters' foldback circuit also operates as a short protect for the output current limiter.

The output voltage for each regulator is set independently, by laser trimming. Voltages are selectable in 0.05V increments within a range of 0.8V to 5.0V. The XC6401 series is also fully compatible with low ESR ceramic capacitors, reducing cost and improving output stability. This high level of output stability is maintained even during frequent load fluctuations, due to the excellent transient response performance and high PSRR achieved across a broad range of frequencies.

The EN function allows the output of each regulator to be turned off independently, resulting in greatly reduced power consumption.

The XC6401 series is available in the SOT-26W or USP-6B, USP-6C 'chip-scale' package.

Typical Application Circuit


Maximum Output Current 150mA(300mA limit)
Dropout Voltage 100mV@100mA
Operating Voltage Range 1.5V~6.0V
Output Voltage Range 0.8V~5.0V(0.05V increments)
High Accuracy ±2%(VOUT>1.5V),±30mV(VOUT≦1.5V)
Low Quiescent Current 25μA(TYP.)
Stand-by Current 0.1μA(TYP.)
High Ripple Rejection 70dB@1kHz
Operating Ambient Temperature -40℃~+85℃
Output Capacitor Low ESR Ceramic



Technical Document

Quality Reports


QuestionWhat is the standby current?

The current that flows through the IC in the standby mode. The standby mode means the state where the IC has been turned off by the CE function.