XC6419 Datasheet, PDF (1/29 Pages) Torex Semiconductor – Dual LDO Regulator (ch1=300mA, ch2=100mA) with ON/OFF Switch

XC6419 Series
Dual LDO Regulator (ch1=300mA, ch2=100mA) with ON/OFF Switch
ETR0338-003
˙GENERAL DESCRIPTION
The XC6419 series is a dual CMOS LDO regulator. The series features high accuracy, low output noise, high
ripple rejection and low dropout and consists of a voltage reference, error amplifier, driver transistor, current limiter,
thermal shutdown circuit and phase compensation circuit. Each output voltage is set independently by laser
trimming and selectable in 0.05V increments within a range of 0.8 to 5.0V.
The EN function turns each output of the two regulators off independently. In this state, the electric charge at the
output capacitor (C_L) is discharged via the internal auto-discharge switch, and as a result the V_OUT voltage quickly
returns to the V_SS level. The output stabilization capacitor (C_L) 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. VR1 and VR2 are completely isolated so that a cross talk during load
fluctuations is minimized.
˙APPLICATIONS
●çMobile phones
●çCordless phones, Wireless communication equipment
●çPortable games
●çDigital still cameras, Digital video cameras
●çPortable audio equipment
●çPDAs
■FEATURES
Input Voltage Range
Maximum Output Current
Output Voltage Range
Output Accuracy
Dropout Voltage
（V_OUT=2.8V）
Low Power Consumption
Stand-by Current
Ripple Rejection
Current Limit
Low ESR Capacitor
CL High Speed Discharge
Small Packages
: 1.5～6.0V
: ch1.300mA / ch2.100mA
: 0.8～5.0V
: ±1% (XC6419A/B)
±20mA@ V_OUT≦2.0V
±2% (XC6419C/D)
±30mA@ V_OUT≦1.5V
: ^{ch1.115mVï¼ IOUT=200mA}
ch2.115mVï¼ I_OUT=50mA
: ch1.28μA / ch2.23μA
: Less than 0.1μA
: 60dBï¼ f=1kHz
: ch1.400mA / ch2.150mA
: USP-6C, SOT-26
˙TYPICAL APPLICATION CIRCUITS
˙TYPICAL PERFORMANCE
CHARACTERISTICS
˔Dropout Voltage vs. Output Current
400
V_OUV_T=_O2_UT.8=V2.8V
85℃
350
300
ch22CHM最ax大imu出m力O電utp流ut Current
100mA
25℃
-40℃
250
ch1 Ma1xCimHu最m 大Ou出tpu力t C電urr流ent
300mA
200 _2cCh2H
150
100
50
1^cC^h1H
0
0
50 100 150 200 250 300
O^Ou^ut^tpu^utC^Cu^ur^rr^re^enⁿt ^: I_OO_UU_TT [^(mA]⁾
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