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PDF XC6421 Data sheet ( Hoja de datos )
| Número de pieza | XC6421 | |
| Descripción | 300mA Small High Speed Dual LDO Regulator | |
| Fabricantes | Torex Semiconductor | |
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XC6421 Series
ETR0353-003
300mA Small High Speed Dual LDO Regulator, Built-in Inrush Current Protection
■GENERAL DESCRIPTION
The XC6421 series is an ultra small CMOS dual LDO regulator, mounting 300mA 2-channel small high speed LDO.
The series features high accuracy, high ripple rejection and low dropout voltage.
The series is capable of high density board installation by the ultra small package of two low on-resistance regulators. Both
output accuracies are ±1% by laser trimming.
Each regulator can be turned off independently to be in stand-by mode by controlling EN pin.
In this state, the electric charge at the output capacitor (CL) is discharged via the internal auto-discharge switch, and as a result
the VOUT voltage quickly returns to the VSS level.
The 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.
Over current protection circuit and over heat protection circuit are mounted, these circuits start working when output current
reaches junction temperature or limit current.
The two regulators are completely isolated so that a cross talk during load fluctuations is minimized
APPLICATIONS
● Mobile phones
● Portable game consoles
● Portable multimedia player
● Digital still cameras, Camcorders
FEATURES
Maximum Output Current
: 300mA
Operating Voltage Range
: 1.6V～5.5V
Output Voltages
: 1.2V～3.6V (0.05V increments)
Output Accuracy
Dropout Voltage
Low Power Consumption
: ±1% (VOUT≧2.00V)
±20mV(VOUT≦1.95V)
: 210mV@IOUT=300mA （VOUT=3.0V）
: 90μA / ch (TYP.)
Stand-by Current
: 0.1μA
Ripple Rejection
: 75dB@1kHz
ON/OFF Control
: Active High
Protection
CL Discharge
Current Limit 450mA (TYP.)
Short Circuit 125mA (TYP.)
Inrush Current Protection
Thermal Shutdown
Low ESR Capacitor
: 1.0μF Ceramic Capacitor
Operating Ambient Temperature : -40℃ ～ +85℃
Package
: USP-6C
Environmentally Friendly
: EU RoHS Compliant, Pb Free
TYPICAL APPLICATION CIRCUITS
TYPICAL PERFORMANCE
CHARACTERISTICS
100
XC6421(VOUT=1.8V)
VIN=3.0V+0.5Vp-pAC, Ta=25℃
CIN=0.1μF(ceramic), CL=1.0μF(ceramic)
80
60
40
20
0
0.1
IOUT=0.1mA
IOUT=1mA
IOUT=30mA
IOUT=100mA
1 10 100
Ripple Frequency : f (kHz)
1000
1/24
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ELECTRICAL CHARACTERISTICS
XC6421
Series
●XC6421 Series
Regulator 1, Regulator 2
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
Ta=25℃
UNITS CIRCUITS
Output Voltage
V (*2)
OUT(E)
VOUT≧2.0V, VEN=VIN, IOUT=10mA
VOUT(T)×0.99 (*2)
V (*3)
OUT(T)
VOUT(T)×1.01 (*2)
VOUT＜2.0V, VEN=VIN, IOUT=10mA
VOUT(T)ｰ 20mV (*2)
V (*3)
OUT(T)
VOUT(T)+20mV (*2)
V
V
①
①
Maximum Output Current
Load Regulation
Dropout Voltage (*4)
Supply Current
Stand-by Current
Line Regulation
Input Voltage
Output Voltage
Temperature
Characteristics
(R&D Value)
Ripple Rejection Rate
Limit Current
Short-Circuit Current
EN”H”Level Voltage
EN”L”Level Voltage
EN”H”Level Current
EN”L”Level Current
CL Discharge Resistance
Inrush Current
Thermal Shutdown Detect
Temperature
Thermal Shutdown
Release Temperature
Thermal Shutdown
Release Temperature
IOUTMAX
ΔVOUT
Vdif
ISS
ISTB
ΔVOUT/
(ΔVIN・VOUT)
VIN
ΔVOUT/
(ΔTa・VOUT)
PSRR
ILIM
ISHORT
VENH
VENL
IENH
IENL
RDCHG
IRUSH
TTSD
TTSR
TTSD－TTSR
VEN=VIN
VEN=VIN, 0.1mA≦IOUT≦300mA
IOUT=300mA, VEN=VIN
VEN=VIN, IOUT=0mA
VEN=VSS
2.5V≦VIN≦5.5V,
（V OUT(T)≦2.0V）,
VEN=VIN, IOUT =30mA
VOUT(T)+0.5V≦VIN≦5.5V,
（V OUT(T)≧2.05V）,
VEN=VIN, IOUT =30mA
-
VEN=VIN, IOUT=10mA,
-40℃≦Ta≦85℃
VEN=VIN,
VIN=｛VOUT(T)+1.0｝+0.5Vp-pAC
IOUT=30mA, f=1kHz
VEN=VIN
VEN =VIN, VOUT=VSS
-
-
VEN=VIN=5.5V
VEN=VSS
VIN =5.5V, VEN =VSS,
VOUT =2.0V
-
Junction Temperature
Junction Temperature
Junction Temperature
300 -
-
- 25 45
See the chart below
- 90 190
0.01 0.1
- 0.02 0.1
1.6 - 5.5
- ±100 -
- 75
310 450
- 125
1.0 -
0-
2.9 6.0
-0.1 -
- 230
- 150
- 150
- 125
- 25
-
-
-
5.5
0.3
9.5
0.1
-
-
-
-
-
mA ①
mV ①
mV ①
μA ②
μA ②
%/V ①
V①
ppm /℃
①
dB ③
mA ①
mA ①
V①
V①
μA ①
μA ①
Ω①
mA ①
℃①
℃①
℃①
NOTE:
Unless otherwise stated, {VIN=VOUT(T)+1.0V}
Each channel is measured when the other channel is turned off (VEN=VSS).
（*1）VOUT(E): Effective output voltage (see the voltage chart)
(ie. The output voltage when “VOUT(T)+1.0V” is provided at the VIN pin while maintaining a certain IOUT value.
（*2）Characteristics of the actual VOUT(E) by nominal output voltage is shown in the voltage chart.
（*3）VOUT(T) : Nominal output voltage
（*4）Vdif＝{VIN1－VOUT1}
VOUT1: A voltage equal to 98% of the output voltage whenever an amply stabilized {VOUT(T)+1.0V} is input with every IOUT.
VIN1: The input voltage when VOUT1 appears as input voltage is gradually decreased.
5/24
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TYPICAL PERFORMANCE CHARACTERISTICS
XC6421
Series
(1) OutputVoltage vs. OutputCurrent
XC6421(VOUT=1.2V)
VIN=2.2V, CIN=1.0μF(ceramic), CL=1.0μF(ceramic)
1.4
1.2
1.0 Ta=85℃
0.8 Ta=25℃
0.6 Ta=-40℃
0.4
0.2
0.0
0
50 100 150 200 250 300 350 400 450 500
OutputCurrent : IOUT (mA)
XC6421(VOUT=1.2V)
Ta=25℃
CIN=1.0μF(ceramic), CL=1.0μF(ceramic)
1.4
1.2
1.0 VIN=1.6V
0.8 VIN=2.2V
VIN=2.7V
0.6 VIN=5.5V
0.4
0.2
0.0
0
50 100 150 200 250 300 350 400 450 500
OutputCurrent : IOUT (mA)
XC6421(VOUT=1.8V)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
VIN=2.8V, CIN=1.0μF(ceramic), CL=1.0μF(ceramic)
Ta=85℃
Ta=25℃
Ta=-40℃
50 100 150 200 250 300 350 400 450 500
OutputCurrent : IOUT (mA)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
XC6421(VOUT=1.8V)
Ta=25℃
CIN=1.0μF(ceramic), CL=1.0μF(ceramic)
VIN=1.9V
VIN=2.3V
VIN=2.8V
VIN=3.3V
VIN=5.5V
50 100 150 200 250 300 350 400 450 500
OutputCurrent : IOUT (mA)
XC6421(VOUT=2.5V)
VIN=3.5V, CIN=1.0μF(ceramic), CL=1.0μF(ceramic)
3.0
2.5
2.0 Ta=85℃
Ta=25℃
1.5
Ta=-40℃
1.0
0.5
0.0
0
50 100 150 200 250 300 350 400 450 500
OutputCurrent : IOUT (mA)
XC6421(VOUT=2.5V)
Ta=25℃
3.0 CIN=1.0μF(ceramic), CL=1.0μF(ceramic)
2.5
2.0
VIN=2.6V
VIN=3V
VIN=3.5V
1.5 VIN=4V
VIN=5.5V
1.0
0.5
0.0
0
50 100 150 200 250 300 350 400 450 500
OutputCurrent : IOUT (mA)
11/24
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| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet XC6421.PDF ] | |
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