LT1584/LT1585/LT1587
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C.
PARAMETER
CONDITIONS
T = 25°C, 30ms pulse
MIN
TYP
MAX
UNITS
Thermal Regulation
LT1584/5/7
LT1584/5/7-3.3 T = 25°C, 30ms pulse
A
A
LT1584/5-3.38
LT1584/5/7-3.45 T = 25°C, 30ms pulse
T = 25°C, 30ms pulse
A
A
LT1584/5/7-3.6 T = 25°C, 30ms pulse
0.004
0.5
0.02
1.0
%/W
%
A
Temperature Stability
Long-Term Stability
RMS Output Noise
●
T = 125°C, 1000 Hrs.
A
0.03
0.003
%
T = 25°C, 10Hz ≤ f ≤ 10kHz
A
%
(% of V
)
OUT
Thermal Resistance
Junction to Case
LT1584
LT1585
LT1585
LT1587
LT1587
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
maximum output power will not be available over the full input/output
voltage range.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 4: I
is defined as the maximum value of output load current
Note 2: 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.
FULL LOAD
as a function of input-to-output voltage. I
is equal to 7A for the
FULL LOAD
LT1584, 4.6A at T ≥ 25°C and 4A at T < 25°C for the LT1585/LT1585-3.3
J
J
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.
Note 3: 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
158457a
5
Linear [ Linear ]
