XC6423
Series
ETR03068-002
Ultra Small 300mA Dual High Speed LDO Regulator with Inrush Current Prevention
■GENERAL
DESCRIPTION
The XC6423 series is an ultra small CMOS dual LDO regulator, with 300mA output current capability. The series features high
accuracy of 1% output voltages, high ripple rejection and low dropout voltage.
The series is available in LGA-6A01 (1.2mm × 1.2mm × h0.4mm) which features ultra small and high heat dissipation. The
series is suited for high density board installation.
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 (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.
Over current protection circuit and over heat protection circuit are integrated, these circuits start working when output current
reaches current limit or junction temperature reaches temperature limit.
The two regulators are completely isolated so that a cross talk during load fluctuations is minimized.
■APPLICATIONS
●
Smart phones / Mobile phones
●
Wireless LAN
●
Mobile devices / terminals
●
Modules ( wireless, cameras, etc. )
■FEATURES
Output Current
Input Voltage Range
Output Voltage Range
High Accuracy
Dropout Voltage
Low Power Consumption
Stand-by Current
Ripple Rejection
EN Pin Function
Protection Circuit
:
:
:
:
:
:
:
:
:
:
300mA
1.6V∼5.5V
1.2V∼3.6V 0.05V increments
±1% (V
OUT
≧2.00V)
±20mV (V
OUT
≦1.95V)
95mV@I
OUT
=150mA (V
OUT
=3.0V)
90μA / ch (TYP.)
Less than 0.1μA
75dB@1kHz
Active High
C
L
Auto Discharge
Current Limit 450mA (TYP.)
Short-circuit Current 125mA (TYP.)
Inrush Current Prevention
Thermal Shutdown
Ceramic Capacitor Compatible 1μF
-40℃∼+85℃
LGA-6A01
EU RoHS Compliant, Pb Free
Low ESR Capacitor
Operating Ambient Temperature
Package
Environmentally Friendly
:
:
:
:
■TYPICAL
APPLICATION CIRCUITS
■TYPICAL
PERFORMANCE
CHARACTERISTICS
XC6423(V
OUT
=2.5V)
C
IN
=1.0μF(ceramic), C
L
=1.0μF(ceramic)
500
Dropout Voltage : Vdiff(mV)
85℃
400
300
200
100
0
0
50
100
150
200
25℃
-40℃
250
300
Output Current : I
OUT
(mA)
1/24
XC6423
Series
■PIN
CONFIGURATION
■PIN
ASSIGNMENT
PIN NUMBER
LGA-6A01
1
2
3
4
5
6
PIN NAME
V
OUT2
V
OUT1
V
SS
EN1
V
IN
EN2
FUNCTIONS
Output 2
Output 1
Ground
ON/OFF Control 1
Power Supply Input
ON/OFF Control 2
■FUNCTION
CHART
XC6423 Series, AB Type
PIN NAME
SIGNAL
L
STATUS
Stand-by
Active
Stand-by*
EN
H
OPEN
H=High Level , L=Low Level
* When the EN pin is left open, an internal pull-down resister maintains the EN pin voltage to be low.
■ABSOLUTE
MAXIMUM RATINGS
PARAMETER
Input Voltage
Output Current
Output Voltage1
Output Voltage2
EN Input Voltage1
EN Input Voltage2
Power Dissipation
LGA-6A01
Operating Ambient Temperature
Storage Temperature
All voltages are described based on the V
SS
.
(*1)
(*2)
(*3)
SYMBOL
V
IN
I
OUT1
+I
OUT2
V
OUT1
, V
OUT2
V
EN1
, V
EN2
Pd
Topr
Tstg
RATINGS
-0.3∼+7.0
1100
(*1)
-0.3∼V
IN
+0.3 or +7.0
(*2)
-0.3∼+7.0
650 (PCB mounted)
-40∼+85
-55∼+125
（
*3
）
UNITS
V
mA
V
V
mW
℃
℃
Please use within the range of Pd > {(V
IN
-V
OUT1
)×I
OUT1
+ (V
IN
-V
OUT2
)×I
OUT2
}
The maximum rating corresponds to the lowest value between V
IN
+0.3 or +7.0.
This is a reference data taken by using the test board.
4/24
XC6423
Series
■ELECTRICAL
CHARACTERISTICS
●XC6423
Series
Regulator1, Regulator2
(*6)
PARAMETER
SYMBOL
CONDITIONS
V
OUT
≧2.0V,
I
OUT
=10mA
Output Voltage
V
OUT(E)
(*1)
Ta=25℃
MIN.
V
OUT(T)
×0.99
(*2)
TYP.
V
OUT(T)
“E-0”
(*2)
MAX.
V
OUT(T)
×1.01
(*2)
UNITS
CIRCUIT
(*3)
V
OUT
＜2.0V,
I
OUT
=10mA
Maximum Output Current
Load Regulation
Dropout Voltage
Supply Current
Stand-by Current
I
OUTMAX
ΔV
OUT
Vdif
(*4)
V
OUT(T)
½
0.02
(*2)
V
OUT(T)
“E-0”
(*2)
V
OUT(T)
+0.02
(*2)
V
①
(*3)
-
0.1mA≦I
OUT
≦300mA
I
OUT
=300mA
I
OUT
=0mA
V
EN
=V
SS
V
OUT(T)
≦2.0V,
I
OUT
=30mA
300
-
-
-
-
-
17
“E-1”
90
0.01
(*5)
-
37
mA
mV
mV
μA
μA
①
①
①
②
②
I
DD
I
STB
190
0.10
Line Regulation
ΔV
OUT
/
(ΔV
IN
・V
OUT
)
2.5V≦V
IN
≦5.5V
-
V
OUT(T)
≧2.05V,
I
OUT
=30mA
V
OUT(T)
+0.5V≦V
IN
≦5.5V
0.02
0.10
%/V
①
Input Voltage
Output Voltage
Temperature Characteristics
(R&D Value)
Power Supply
Rejection Ratio
Current Limit
Short-circuit Current
EN "H" Level Voltage
EN "L" Level Voltage
EN "H" Level Current
EN "L" Level Current
C
L
Auto-discharge
Resistance
Inrush Current
Thermal Shutdown
Detect Temperature
Thermal Shutdown
Release Temperature
Thermal Shutdown
Hysteresis Width
NOTE:
V
IN
ΔV
OUT
/
(ΔTopr・V
OUT
)
-
I
OUT
=10mA,
-40℃≦Topr≦85℃
V
IN
={V
OUT(T)
+1.0}+0.5Vp-p
AC
1.6
-
-
±100
5.5
-
V
ppm /℃
①
①
PSRR
I
LIM
I
SHORT
V
ENH
V
ENL
I
ENH
I
ENL
R
DCHG
I
RUSH
T
TSD
T
TSR
T
TSD
−T
TSR
V
EN=
V
OUT(T)
+1.0V
I
OUT
=30mA, f=1kHz
-
V
OUT
=V
SS
-
-
V
EN
=V
IN
=5.5V
V
EN
=V
SS
V
IN
=5.5V, V
EN
=V
SS
,
V
OUT
=2.0V
V
IN
=5.5V, V
CE
=0→5.5V
Junction Temperature
Junction Temperature
Junction Temperature
-
310
-
0.9
V
SS
2.9
-0.1
-
-
-
-
-
75
450
125
-
-
6.0
-
230
150
150
125
25
-
-
-
5.5
0.3
9.5
0.1
-
-
-
-
-
dB
mA
mA
V
V
μA
μA
Ω
mA
℃
℃
℃
③
①
①
①
①
①
①
①
②
①
①
①
Unless otherwise stated, V
IN
=V
OUT(T)
+1.0V, V
EN
=V
IN
(*1)
(*2)
(*3)
(*4)
V
OUT(E)
is Effective output voltage
V
OUT(T)
is Nominal output voltage
E-0: OUTPUT VOLTAGE (Refer to the Voltage Chart)
Vdif={V
IN1
-V
OUT1
}
V
IN1
is the input voltage when V
OUT1
appears at the V
OUT
pin while input voltage is gradually decreased.
V
OUT1
is the voltage equal to 98% of the normal output voltage when amply stabilized V
OUT(T)
+1.0V is input at the V
IN
pin.
E-1: DROPOUT VOLTAGE (Refer to the Voltage Chart)
E-1: When each channel is measured, the other channel is turned off (V
EN
=V
SS
)
(*5)
(*6)
5/24
Mobile and portable
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