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LT1587CM Datasheet(PDF) 4 Page - Linear Technology

Part # LT1587CM
Description  7A, 4.6A, 3A Low Dropout Fast Response Positive Regulators Adjustable and Fixed
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1587CM Datasheet(HTML) 4 Page - Linear Technology

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4
LT1584/LT1585/LT1587
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Adjust Pin Current
LT1584/5/7
q
55
120
µA
Adjust Pin Current
LT1584
1.5V
≤ (VIN – VOUT) ≤ 3V, 10mA ≤ IOUT ≤ IFULL LOAD
Change (Note 3)
LT1585/7
1.5V
≤ (VIN – VOUT) ≤ 5.75V, 10mA ≤ IOUT ≤ IFULL LOAD
q
0.2
5
µA
Minimum
LT1584/5/7
1.5V
≤ (VIN – VOUT) ≤ 5.75V
q
210
mA
Load Current
Quiescent Current
LT1584/5/7-3.3
VIN = 5V
LT1584/5-3.38
VIN = 5V
LT1584/5/7-3.45 VIN = 5V
LT1584/5/7-3.6
VIN = 5V
q
813
mA
Ripple Rejection
LT1584
f = 120Hz, COUT = 25µF Tant., (VIN – VOUT) = 2.5V, IOUT = 7A
LT1584-3.3
f = 120Hz, COUT = 25µF Tant., VIN = 5.8V, IOUT = 7A
LT1584-3.38
f = 120Hz, COUT = 25µF Tant., VIN = 5.88V, IOUT = 7A
LT1584-3.45
f = 120Hz, COUT = 25µF Tant., VIN = 5.95V, IOUT = 7A
LT1584-3.6
f = 120Hz, COUT = 25µF Tant., VIN = 6.1V, IOUT = 7A
LT1585
f = 120Hz, COUT = 25µF Tant., (VIN – VOUT) = 3V,
IOUT = 4.6A, TJ ≥ 25°C
f = 120Hz, COUT = 25µF Tant., (VIN – VOUT) = 3V,
IOUT = 4A, TJ < 25°C
LT1585-3.3
f = 120Hz, COUT = 25µF Tant., VIN = 6.3V,
IOUT = 4.6A, TJ ≥ 25°C
f = 120Hz, COUT = 25µF Tant., VIN = 6.3V,
IOUT = 4A, TJ < 25°C
LT1585-3.38
f = 120Hz, COUT = 25µF Tant., VIN = 6.38V, IOUT = 4A
LT1585-3.45
f = 120Hz, COUT = 25µF Tant., VIN = 6.45V, IOUT = 4A
LT1585-3.6
f = 120Hz, COUT = 25µF Tant., VIN = 6.6V, IOUT = 4A
LT1587
f = 120Hz, COUT = 25µF Tant., (VIN – VOUT) = 3V, IOUT = 3A
LT1587-3.3
f = 120Hz, COUT = 25µF Tant., VIN = 6.3V, IOUT = 3A
LT1587-3.45
f = 120Hz, COUT = 25µF Tant., VIN = 6.45V, IOUT = 3A
LT1587-3.6
f = 120Hz, COUT = 25µF Tant., VIN = 6.6V, IOUT = 3A
q
60
72
dB
Thermal Regulation
LT1584/5/7
TA = 25°C, 30ms pulse
LT1584/5/7-3.3
TA = 25°C, 30ms pulse
LT1584/5-3.38
TA = 25°C, 30ms pulse
LT1584/5/7-3.45 TA = 25°C, 30ms pulse
LT1584/5/7-3.6
TA = 25°C, 30ms pulse
0.004
0.02
%/W
Temperature Stability
q
0.5
%
Long-Term Stability
TA = 125°C, 1000 Hrs.
0.03
1.0
%
RMS Output Noise
TA = 25°C, 10Hz ≤ f ≤ 10kHz
0.003
%
(% of VOUT)
Thermal Resistance
LT1584
T Package: Control Circuitry/Power Transistor
0.65/2.7
°C/W
Junction to Case
LT1585
T Package: Control Circuitry/Power Transistor
0.7/3.0
°C/W
LT1585
M Package: Control Circuitry/Power Transistor
0.7/3.0
°C/W
LT1587
T Package: Control Circuitry/Power Transistor
0.7/3.0
°C/W
LT1587
M Package: Control Circuitry/Power Transistor
0.7/3.0
°C/W
ELECTRICAL CHARACTERISTICS
Note 3: IFULL LOAD is defined as the maximum value of output load current
as a function of input-to-output voltage. IFULL LOAD is equal to 7A for the
LT1584, 4.6A at TJ ≥ 25°C and 4A at TJ < 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.
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.


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