SENSITRON
SHD519150
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 985, REV. -
LINEAR VOLTAGE REGULATOR
THREE TERMINAL-POSITIVE-ADJUSTABLE
3.0 Amp, Low Dropout Voltage
LCC-3P Hermetic Package
Description: This positive adjustable regulator is
Features:
designed to provide 3A with high efficiency using simple
3-terminal configurations. All internal circuitry is
designed to operate down to 1V input-to-output differential
and the dropout voltage is fully specified as a function of
load current. Dropout is guaranteed at a maximum of 1.5V
at maximum output current, decreasing at lower load
currents. Available in fixed voltages.
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Three-Terminal Adjustable
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Operates Down to 1V Dropout
Guaranteed Dropout Voltage at Multiple Current Levels
On-Chip Thermal Limiting
Line Regulation: 0.035%
Load Regulation: 0.20%
Fixed Versions Available
Electrically Equivalent to LTÒ1085
Current limit is trimmed to ensure specified output current
and controlled short-circuit current. On-chip thermal
limiting provides protection against any combination of
overload that would create excessive junction
temperatures.
Applications:
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High Efficiency Linear Regulators
Post Regulator for Switching Supplies
Constant Current Regulators
ELECTRICAL CHARACTERISTICS -55ºC < TA < 125ºC (UNLESS OTHERWISE SPECIFIED)
PARAMETER
SYMBOL
Test Conditions
Min
TYP
-
1.250
0.035
Max.
35
1.270
0.20
Units
Input Voltage
Reference Voltage
Line Regulation Note(1,2)
Vin
Vref
DVout/DVin
DVout/DVin
V
V
%
1.5V (Vin-Vout) <25V, 10mA <Iout 3A
1.50V<Vin<15V,Iout=10mA
1.225
Line Regulation Note(1,2)
Load Regulation Note(1,2,3) DVout/DIout (Vin-Vout) = 3V 10mA<Iout<Ifull load
Dropout Voltage
Current Limit
Current Limit
Adjust Pin
Adjust Pin Current Change
Minimum Load Current
Quiescent Current
Ripple Rejection
(Vin-Vout) = 15V to 30V 10mA<Iout<Ifull load
0.050
0.60
1.30
4.00
0.50
55
0.2
5
8
72
0.50
1.00
1.50
-
%
%
V
A
A
mA
mA
mA
mA
dB
VDO
ILIM
ILIM
IAdj
DVref = 1%, Iout = 3A
(Vin-Vout)=5V
(Vin-Vout)= 25V
Typical value is at Tj =25ºC
1.5V<(Vin-Vout)<25V,10mA<Iout<Ifull load
(Vin-Vout)= 25V
3.20
0.20
-
120
5
10
13
-
DIAdj
IMIN
IQ
Vin= 5.0V
60
DVin/DVout
f=120Hz.Cadj=25mF, Cout=25mF(Tant.), (Vin-
Vout)=3V,Iout=3.0A
Thermal Regulation
Temperature Stability
Long Term Stability
RMS Output Noise
TA=ºC, 30ms Pulse
-55ºC,<T J<+125ºC
TA=+125ºC, t=1000hrs
TA=25ºC, 10Hz<f<10kHz
Surface mount LCC-3P package
0.004
0.50
0.30
0.003
-
0.02
%/W
%
%
%
ºC/W
DVout/DT
DVout/DT
(% of Vout)
TJC
1.0
-
2.31
Thermal Resistance (J-C)
Notes:
1) See thermal regulation specification for changes in output voltage due to heating effects. Load and line regulation are measured at a constant
junction temperature by low duty cycle pulse testing.
2) Line and load regulation is guaranteed up to the maximum power dissipation in the package. Input/output differential and the output current
determine power dissipation. Guaranteed maximum output power will not be available over the full / input/output voltage range.
3) IFull Load is defined as the maximum value of output load current as a function of the input-to-output voltage. IFull Load is equal to 3.0 Amps.
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· World Wide Web Site - http://www.sensitron.com · E-Mail Address - sales@sensitron.com ·