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Q17 Technical Service Manual
Electrical Characteristics
Tj = 25°C unless otherwise specified.
The denotes specifications which apply over the specified operating temperature range.
Parameter
3
Reference Voltage
4
Output Voltage
5
Output Voltage
1, 2
Line Regulation
1, 2
Load Regulation
Dropout Voltage
Current Limit
3
Adjust Pin Current
Adjust Pin Current Change
Minimum Load Current
Quiescent Current
Ripple Rejection
Thermal Regulation
Temperature Stability
Long-Term Stability
RMS Output Noise
(% of V
)
OUT
Thermal Resistance,
Junction to Case
Thermal Shutdown
Notes:
1. See thermal regulation specifications 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 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.
Conditions
1.5V
(V
– V
)
IN
OUT
10mA
I
3A
OUT
3.3V
V
7V
IN
10mA
I
3A
OUT
5.1V
V
7V
IN
10mA
I
3A
OUT
(V
+ 1.5V)
V
OUT
IN
I
10mA
OUT
(V
– V
) = 3V
IN
OUT
10mA
I
3A
OUT
V
= 1%, I
= 3A
REF
OUT
(V
– V
) = 2V
IN
OUT
3
1.5V
(V
– V
)
IN
OUT
10mA
I
3A
OUT
1.5V
(V
– V
)
IN
OUT
V
= 5V
IN
f = 120Hz, C
= 22 F Tantalum,
OUT
(V
– V
) = 3V, I
IN
OUT
T
= 25 C, 30ms pulse
A
T
= 125 C, 1000 hrs.
A
T
= 25 C, 10Hz
f
A
TO-220
TO-263, TO-252
5.75V,
7V,
5.75V,
5.75V
= 3A
OUT
10kHz
--35--
Min.
Typ.
Max
1.225
1.250
1.275
(-2%)
(+2%)
1.47
1.5
1.53
3.234
3.3
3.366
0.005
0.2
0.05
0.5
1.150
1.300
3.1
4
35
120
0.2
5
10
4
13
60
72
0.004
0.02
0.5
0.03
1.0
0.003
3
3
150
Units
V
V
V
%
%
V
A
A
A
mA
mA
dB
%/W
%
%
%
C/W
C/W
C
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