XC6401 Series
ETR0309_006
Dual LDO Regulators, Low ESR Cap. Compatible
■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 0.05V 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.
■FEATURES
■APPLICATIONS
Maximum Output Current
: More than 150mA (300mA limit)
Dropout Voltage
●Mobile Phones
●Cordless phones and
radio communication equipment
●Portable games
●Cameras, Video recorders
●Portable Audio Equipment
●PDAs
: 100mV @100mA
Operating Voltage Range
: 1.5V ~ 6.0V
Output Voltage Range
: 0.8V~5.0V (0.05V 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
Packages
Environmentally Friendly
: SOT-26W, USP-6B, USP-6C
: EU RoHS Compliant, Pb Free
■TYPICAL APPLICATION CIRCUITS ■TYPICAL PERFORMANCE
CHARACTERISTICS
●SOT-26W
●Interactive Load Transient Response
VOUT1
2
VIN
VSS
5
3
EN2
VOUT2
4
6
1
EN1
CL1
1uF
CIN
1uF
CL2
1uF
●USP-6
1
6
2
CIN
1uF
EN2 VOUT2
VIN VOUT1
5
3
EN1 VSS
4
CL1
1uF
CL2
1uF
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