LT1585 Linear Technology, LT1585 Datasheet - Page 4

• Manufacturer Part Number: LT1585
• Description: 7A/ 4.6A/ 3A Low Dropout Fast Response Positive Regulators Adjustable and Fixed
• Manufacturer: Linear Technology

LT1584/LT1585/LT1587
ELECTRICAL CHARACTERISTICS
PARAMETER
Adjust Pin Current
Adjust Pin Current
Change (Note 3)
Minimum
Load Current
Quiescent Current
Ripple Rejection
Thermal Regulation
Temperature Stability
Long-Term Stability
RMS Output Noise
(% of V
Thermal Resistance
Junction to Case
The
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.
4
denotes specifications which apply over the specified operating
OUT
)
LT1584/5/7
LT1584
LT1585/7
LT1584/5/7
LT1584/5/7-3.3
LT1584/5-3.38
LT1584/5/7-3.45 V
LT1584/5/7-3.6
LT1584
LT1584-3.3
LT1584-3.38
LT1584-3.45
LT1584-3.6
LT1585
LT1585-3.3
LT1585-3.38
LT1585-3.45
LT1585-3.6
LT1587
LT1587-3.3
LT1587-3.45
LT1587-3.6
LT1584/5/7
LT1584/5/7-3.3
LT1584/5-3.38
LT1584/5/7-3.45 T
LT1584/5/7-3.6
LT1584
LT1585
LT1585
LT1587
LT1587
CONDITIONS
1.5V (V
1.5V (V
1.5V (V
V
V
V
f = 120Hz, C
f = 120Hz, C
f = 120Hz, C
f = 120Hz, C
f = 120Hz, C
f = 120Hz, C
f = 120Hz, C
f = 120Hz, C
f = 120Hz, C
f = 120Hz, C
f = 120Hz, C
f = 120Hz, C
f = 120Hz, C
f = 120Hz, C
f = 120Hz, C
f = 120Hz, C
T
T
T
T
T
T
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
A
A
A
A
A
A
A
IN
IN
IN
IN
I
I
I
I
OUT
OUT
OUT
OUT
= 25 C, 30ms pulse
= 25 C, 30ms pulse
= 25 C, 30ms pulse
= 25 C, 30ms pulse
= 25 C, 30ms pulse
= 125 C, 1000 Hrs.
= 25 C, 10Hz f 10kHz
= 5V
= 5V
= 5V
= 5V
= 4.6A, T
= 4A, T
= 4.6A, T
= 4A, T
IN
IN
IN
– V
– V
– V
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
J
J
OUT
OUT
OUT
< 25 C
< 25 C
J
J
= 25 F Tant., (V
= 25 F Tant., V
= 25 F Tant., V
= 25 F Tant., V
= 25 F Tant., V
= 25 F Tant., (V
= 25 F Tant., (V
= 25 F Tant., V
= 25 F Tant., V
= 25 F Tant., V
= 25 F Tant., V
= 25 F Tant., V
= 25 F Tant., (V
= 25 F Tant., V
= 25 F Tant., V
= 25 F Tant., V
) 3V, 10mA I
) 5.75V, 10mA I
) 5.75V
25 C
25 C
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
= 5.8V, I
= 5.88V, I
= 5.95V, I
= 6.1V, I
= 6.3V,
= 6.3V,
= 6.38V, I
= 6.45V, I
= 6.6V, I
= 6.3V, I
= 6.45V, I
= 6.6V, I
– V
– V
– V
– V
OUT
Note 3: I
as a function of input-to-output voltage. I
LT1584, 4.6A at T
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.
OUT
OUT
OUT
OUT
OUT
I
) = 2.5V, I
) = 3V,
) = 3V,
) = 3V, I
FULL LOAD
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
I
FULL LOAD
FULL LOAD
= 7A
= 7A
= 4A
= 3A
= 3A
= 7A
= 7A
= 4A
= 4A
= 3A
OUT
OUT
= 3A
J
= 7A
is defined as the maximum value of output load current
25 C and 4A at T
MIN
60
J
< 25 C for the LT1585/LT1585-3.3
FULL LOAD
0.004
0.003
0.03
TYP
0.2
0.5
55
72
2
8
is equal to 7A for the
0.65/2.7
0.7/3.0
0.7/3.0
0.7/3.0
0.7/3.0
MAX
0.02
120
1.0
10
13
5
UNITS
%/W
C/W
C/W
C/W
C/W
C/W
mA
mA
dB
%
%
%
A
A