XC6415Series
ETR0332-006a
Dual LDO Regulators with ON/OFF Switch
■GENERAL DESCRIPTION
XC6415 series are highly accurate, Dual, low noise, CMOS LDO voltage regulators. Performance features of the series include
low output noise, high ripple rejection rate, and low dropout. Extremely dense power supply circuit can be organized with a 2
channeled high speed voltage regulator in low ON resistance which is built-in to an ultra small USP-6C package. The output
voltage for each regulator is set independently by laser trimming and selectable in 0.05V increments within a range of 0.8 to 5.0V.
The EN function allows the output of each regulator to be turned off independently. In this state, with the XC6415 series, the IC
turns on the internal switch located between the VOUT and the VSS pins. This short enables the electric charge at the output
capacitor (CL) to be discharged via the internal auto-discharge resistance, and as a result the VOUT pin quickly returns to the VSS
level. The series’ output stabilization capacitor (CL) is also compatible with low ESR ceramic capacitors. The high level of
output stability is maintained even during frequent load fluctuations, due to the excellent transient response performance.
Because regulator 1 and 2 are completely isolated, a cross talk between each channel, which causes a problem during load
fluctuations, can be greatly reduced
■APPLICATIONS
■FEATURES
Output Current
Dropout Voltage
: 200mA (300mA limit, TYP.)
: 95mV @ IOUT=100mA
VOUT(T)=3.0V
: 1.5V~6.0V
: 0.8V~5.0V
●Mobile phones
●Cordless phones, Wireless communication equipment
●Portable games
Operating Voltage Range
Output Voltage Range
(0.05V increments)
: + 1% @ VOUT>2.0V
: + 2% @ VOUT≧1.5V
: + 20mV @VOUT<2.0V
: + 30mV @VOUT<1.5V
: 28μA/ch (TYP.)
: Less than 0.1μA
: 65dB@1kHz
●Digital still cameras, Digital video cameras
●Portable audio equipment
●PDAs
High Accuracy
Low Power Consumption
Stand-by Current
Ripple Rejection
Operating Temperature Range: - 40OC ~ 85OC
Low ESR Capacitor
: 1.0μF ceramic capacitor
compatible
Small Packages
: USP-6C, SOT-26, USPN-6
■TYPICAL PERFORMANCE
■TYPICAL APPLICATION CIRCUITS
CHARACTERISTICS
● Cross Talk
XC6415(VOUT1=3.3V, VOUT2=2.5V)
VIN=4.3V, tr=tf=5μS, Ta=25℃
I
OUT2=0.1→50mA, CIN=CL1=CL2=1.0μF(ceramic)
3.40
3.35
3.30
3.25
3.20
3.15
250
200
150
100
50
Output Voltage(VR1 : 10mA)
Output Current
(VR2 : 0.1mA→50mA)
0
Time (200uS/div)
1/23