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PRODUCT SPECIFICATION
RC1587
3
Electrical Characteristics
Tj = 25°C unless otherwise specified.
The
denotes specifications which apply over the specified operating temperature range.
Notes:
1. See thermal regulation specifications for changes in output voltage due to heating effects. Load and line regulation are
2. Line and load regulation are guaranteed up to the maximum power dissipation (18W). Power dissipation is determined by
input/output differential and the output currrent. Guaranteed maximum output power will not be available over the full input/
output voltage range.
3. RC1587 only.
4. RC1587-1.5 only.
5. RC1587-3.3 only.
Parameter
Reference Voltage
3
Conditions
1.5V
≤
(V
IN
– V
OUT
)
≤
5.75V,
10mA
≤
I
OUT
≤
3A
3.3V
≤
V
IN
≤
7V
10mA
≤
I
OUT
≤
3A
5.1V
≤
V
IN
≤
7V
10mA
≤
I
OUT
≤
3A
(V
OUT
+ 1.5V)
≤
V
IN
≤
7V,
I
OUT
=
10mA
(V
IN
– V
OUT
) = 3V
10mA
≤
I
OUT
≤
3A
V
REF
= 1%, I
OUT
= 3A
(V
IN
– V
OUT
) = 2V
Min.
1.225
(-2%)
1.47
Typ.
1.250
Max
1.275
(+2%)
1.53
Units
V
Output Voltage
4
1.5
V
Output Voltage
5
3.234
3.3
3.366
V
Line Regulation
1, 2
0.005
0.2
%
Load Regulation
1, 2
0.05
0.5
%
Dropout Voltage
Current Limit
Adjust Pin Current
3
Adjust Pin Current Change
3
1.5V
≤
(V
IN
– V
OUT
)
≤
5.75V,
10mA
≤
I
OUT
≤
3A
Minimum Load Current
1.5V
≤
(V
IN
– V
OUT
)
≤
5.75V
Quiescent Current
V
IN
= 5V
Ripple Rejection
f = 120Hz, C
OUT
= 22
μ
F Tantalum,
(V
IN
– V
OUT
) = 3V, I
OUT
= 3A
Thermal Regulation
T
A
= 25
°
C, 30ms pulse
Temperature Stability
Long-Term Stability
T
A
= 125
°
C, 1000 hrs.
RMS Output Noise
(% of V
OUT
)
Thermal Resistance,
Junction to Case
TO-263
Thermal Shutdown
1.150
4
35
0.2
1.300
V
A
μ
A
μ
A
3.1
120
5
10
mA
mA
dB
4
72
13
60
0.004
0.5
0.03
0.003
0.02
%/W
%
%
%
1.0
T
A
= 25
°
C, 10Hz
≤
f
≤
10kHz
TO-220
3
3
°
C/W
°
C/W
°
C
150