LT1584/LT1585/LT1587
ELECTRICAL CHARACTERISTICS
PARAMETER
Adjust Pin Current
Adjust Pin Current
Change (Note 3)
Minimum
Load Current
Quiescent Current
LT1584/5/7
LT1584
LT1585/7
LT1584/5/7
LT1584/5/7-3.3
LT1584/5-3.38
LT1584/5/7-3.45
LT1584/5/7-3.6
LT1584
LT1584-3.3
LT1584-3.38
LT1584-3.45
LT1584-3.6
LT1585
1.5V
≤
(V
IN
– V
OUT
)
≤
3V, 10mA
≤
I
OUT
≤
I
FULL LOAD
1.5V
≤
(V
IN
– V
OUT
)
≤
5.75V, 10mA
≤
I
OUT
≤
I
FULL LOAD
1.5V
≤
(V
IN
– V
OUT
)
≤
5.75V
V
IN
= 5V
V
IN
= 5V
V
IN
= 5V
V
IN
= 5V
f = 120Hz, C
OUT
= 25µF Tant., (V
IN
– V
OUT
) = 2.5V, I
OUT
= 7A
f = 120Hz, C
OUT
= 25µF Tant., V
IN
= 5.8V, I
OUT
= 7A
f = 120Hz, C
OUT
= 25µF Tant., V
IN
= 5.88V, I
OUT
= 7A
f = 120Hz, C
OUT
= 25µF Tant., V
IN
= 5.95V, I
OUT
= 7A
f = 120Hz, C
OUT
= 25µF Tant., V
IN
= 6.1V, I
OUT
= 7A
f = 120Hz, C
OUT
= 25µF Tant., (V
IN
– V
OUT
) = 3V,
I
OUT
= 4.6A, T
J
≥
25°C
f = 120Hz, C
OUT
= 25µF Tant., (V
IN
– V
OUT
) = 3V,
I
OUT
= 4A, T
J
< 25°C
f = 120Hz, C
OUT
= 25µF Tant., V
IN
= 6.3V,
I
OUT
= 4.6A, T
J
≥
25°C
f = 120Hz, C
OUT
= 25µF Tant., V
IN
= 6.3V,
I
OUT
= 4A, T
J
< 25°C
f = 120Hz, C
OUT
= 25µF Tant., V
IN
= 6.38V, I
OUT
= 4A
f = 120Hz, C
OUT
= 25µF Tant., V
IN
= 6.45V, I
OUT
= 4A
f = 120Hz, C
OUT
= 25µF Tant., V
IN
= 6.6V, I
OUT
= 4A
f = 120Hz, C
OUT
= 25µF Tant., (V
IN
– V
OUT
) = 3V, I
OUT
= 3A
f = 120Hz, C
OUT
= 25µF Tant., V
IN
= 6.3V, I
OUT
= 3A
f = 120Hz, C
OUT
= 25µF Tant., V
IN
= 6.45V, I
OUT
= 3A
f = 120Hz, C
OUT
= 25µF Tant., V
IN
= 6.6V, I
OUT
= 3A
T
A
= 25°C, 30ms pulse
T
A
= 25°C, 30ms pulse
T
A
= 25°C, 30ms pulse
T
A
= 25°C, 30ms pulse
T
A
= 25°C, 30ms pulse
q
CONDITIONS
q
q
q
MIN
TYP
55
0.2
2
MAX
120
5
10
UNITS
µA
µA
mA
q
8
13
mA
Ripple Rejection
LT1585-3.3
LT1585-3.38
LT1585-3.45
LT1585-3.6
LT1587
LT1587-3.3
LT1587-3.45
LT1587-3.6
Thermal Regulation
LT1584/5/7
LT1584/5/7-3.3
LT1584/5-3.38
LT1584/5/7-3.45
LT1584/5/7-3.6
q
60
72
dB
0.004
0.5
0.03
0.003
0.02
1.0
%/W
%
%
%
Temperature Stability
Long-Term Stability
RMS Output Noise
(% of V
OUT
)
Thermal Resistance
Junction to Case
LT1584
LT1585
LT1585
LT1587
LT1587
T
A
= 125°C, 1000 Hrs.
T
A
= 25°C, 10Hz
≤
f
≤
10kHz
T Package: Control Circuitry/Power Transistor
T Package: Control Circuitry/Power Transistor
M Package: Control Circuitry/Power Transistor
T Package: Control Circuitry/Power Transistor
M Package: Control Circuitry/Power Transistor
0.65/2.7
0.7/3.0
0.7/3.0
0.7/3.0
0.7/3.0
°C/W
°C/W
°C/W
°C/W
°C/W
The
q
denotes specifications which apply over the specified operating
temperature range.
Note 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.
Note 2:
Line and load regulation are guaranteed up to the maximum power
dissipation (25W for the LT1584 in T package, 26.5W for the LT1585 in T
package, 18W for the LT1587 in T package). Power dissipation is
determined by input/output differential and the output current. Guaranteed
maximum output power will not be available over the full input/output
voltage range.
Note 3:
I
FULL LOAD
is defined as the maximum value of output load current
as a function of input-to-output voltage. I
FULL LOAD
is equal to 7A for the
LT1584, 4.6A at T
J
≥
25°C and 4A at T
J
< 25°C for the LT1585/LT1585-3.3
and 3A for the LT1587. The remaining LT1585 fixed voltage versions are
4A. The LT1585 and LT1587 have constant current limit with changes in
input-to-output voltage. The LT1584 has variable current limit which
decreases about 4A as input-to-output voltage increases from 3V to 7V.
4
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