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XC6401

Dual LDO Regulators, Low ESR Cap. Compatible

TOREX SEMICONDUCTOR 

XC6401 Series

Dual LDO Regulators, Low ESR Cap. Compatible

ETR0309_005

■GENERAL DESCRIPTION

The XC6401 series are highly accurate, Dual, low noise, CMOS LDO voltage regulators. Performance features of the series

includes low output noise, high ripple rejection ratio, low dropout and very fast turn-on times.

The XC6401 includes a reference voltage source, error amplifiers, driver transistors, current limiters and phase

compensators internally. 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 50mV steps

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.

■APPLICATIONS

●Mobile Phones

●Cordless phones and

radio communication equipment

●Portable games

●Cameras, Video recorders

●Portable Audio Equipment

●PDAs

■FEATURES

Maximum Output Current : More than 150mA (300mA limit)

Dropout Voltage

: 100mV @100mA

Operating Voltage Range : 1.5V ~ 6.0V

Output Voltage Range

: 0.8V~5.0V (50mV increments)

Highly Accurate

: ±2% (VOUT>1.5V)

: ±30mV (VOUT≦1.5V)

Low Power Consumption : 25μA (TYP.)

Standby Current

: Less than 0.1μA (TYP.)

High Ripple Rejection

: 70dB @1kHz

Operating Temperature Range : -40℃ ~ +85℃

Low ESR Capacitor Compatible : Ceramic capacitor

Low Output Noise

Ultra Small Packages

: SOT-26W,USP-6B,USP-6C

■TYPICAL APPLICATION CIRCUITS

●SOT-26W

EN1 VOUT1

CL1

VIN VSS

1uF

CIN

1uF

EN2 VOUT2

CL2

1uF

■TYPICAL PERFORMANCE

CHARACTERISTICS

●Interactive Load Transient Response

●USP-6

CIN

1uF

1 EN2VOUT2 6

2 5 VIN VOUT1

3 EN1 VSS 4

CL1 CL2

1uF 1uF

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