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XC6419BB18EL

Description
Dual LDO Regulator (ch1=300mA, ch2=100mA) with ON/OFF Switch
File Size762KB,29 Pages
Manufacturer
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XC6419BB18EL Overview

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
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.
■GENERAL
DESCRIPTION
■APPLICATIONS
Mobile phones
Cordless phones, Wireless communication equipment
Portable games
Digital still cameras, Digital video cameras
Portable audio equipment
PDAs
■FEATURES
Input Voltage Range
Maximum Output Current
Output Voltage Range
Output Accuracy
:
:
:
:
1.5½6.0V
ch1.300mA / ch2.100mA
0.8½5.0V
±1% (XC6419A/B)
±20mA@ V
OUT
≦2.0V
±2% (XC6419C/D)
±30mA@ V
OUT
≦1.5V
ch1.115mV@I
OUT
=200mA
ch2.115mV@I
OUT
=50mA
ch1.28μA / ch2.23μA
Less than 0.1μA
60dB@f=1kHz
ch1.400mA / ch2.150mA
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
:
:
:
:
:
:
USP-6C, SOT-26
■TYPICAL
APPLICATION CIRCUITS
6
1
2
3
■TYPICAL
PERFORMANCE
CHARACTERISTICS
●Dropout
Voltage vs. Output Current
400
350
DropoutVoltage :
:
Vdif [mV]
Dropout Voltage Vdif (mV)
300
250
200
150
100
50
0
0
50
100
150
200
250
300
Output Current
:
OUT
(mA)
OutputCurrent
:
I
OUT
[mA]
ch1
1CH
ch2
2CH
ch2 Maximum Output Current
2CH最大出力電流
V
OUT
=2.8V
V
OUT
=2.8V
85℃
25℃
-40℃
5
4
100mA
ch1 Maximum Output Current
1CH最大出力電流
300mA
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