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CX1085
3A Low dropout voltage regulator
SICORE
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IOUT = 0 mA, and TJ = +25°C unless otherwise specified.
Parameter
Device
Conditions
Min Typ
Max
Units
Output Voltage
CX1085
IOUT = 10 mA
10mA
≤IOUT ≤3A,
1.5V
≤ (VIN - VOUT) ≤12V
1.0
2.0
%
%
Line Regulation
CX1085
IOUT = 10 mA ,
1.5V
≤ (VIN - VOUT) ≤12V
0.3
0.6
6.0
10.0
mV
mV
Load Regulation
(Notes 2, 3)
CX1085
(VIN - VOUT) =3V,
10mA
≤IOUT ≤5A
0.1
0.2
0.3
0.4
%
Dropout
Voltage(VIN - VOUT)
CX1085
∆VOUT , ∆VREF = 1%,
IOUT = 3A
1.3
1.5
V
Current Limit
CX1085
(VIN - VOUT) = 5V
5.0
6.0
7.0
A
Minimum Load
Current
CX1085
(VIN - VOUT) = 12V
5
10
mA
Quiescent Current CX1085
VIN ≤12V
5
10
mA
Ripple Rejection
CX1085
f =120Hz , COUT = 22µF Tantalum, IOUT = 3A,
(VIN-VOUT ) = 3V, CADJ =10µF
60
75
dB
Thermal
Regulation
CX1085
TA = 25°C, 30ms pulse
0.008
0.04
%W
Adjust Pin Current CX1085
10mA
≤IOUT ≤3A,
1.5V
≤ (VIN - VOUT) ≤12V
55
120
µA
µA
Adjust Pin Current
Change
CX1085
10mA
≤IOUT ≤3A,
1.5V
≤ (VIN- VOUT) ≤12V
0.2
5.0
µA
Thermal
Resistance
Junction-to-Case
CX1085
TO-220:Control Circuitry/Power Transistor
TO-263:Control Circuitry/Power Transistor
1.5/4.0
1.5/4.0
°C/W
APPLICATION CIRCUITS
CX1085
IN
OUT
ADJ
VIN
VOUT
R1
120
R2
1k
VREF
Cout
100uF
Cin
10uF
VOUT = VRE F (1+ R2/R1)+IADJR2
Application 1:1.25V to 10V Adjustable Regulator
CX1085
IN
OUT
5.0
VIN>9.0V
VOUT=7.5V
Cout
100uF
Cin
10uF
2.5V
Vout =7.5V
Application2: Regulator with
reference
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