LT1581 LINER [Linear Technology], LT1581 Datasheet - Page 3

• Manufacturer Part Number: LT1581
• Description: 10A, Very Low Dropout Regulators
• Manufacturer: LINER [Linear Technology]

temperature range, otherwise specifications are at T
PARAMETER
Dropout Voltage (Note 3)
Minimum V
(V
Minimum V
(V
(V
Minimum V
(V
Minimum V
(V
(V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Unless otherwise specified, V
adjustable device, V
Note 3: For the LT1581, dropout is caused by either minimum control
voltage (V
are specified with respect to the output voltage. The specifications represent
the minimum input-to-output voltage required to maintain 1% regulation.
ELECTRICAL CHARACTERISTICS
CONTROL
CONTROL
ADJ
POWER
POWER
ADJ
= 0V)
= 0V)
– V
– V
CONTROL
– V
– V
CONTROL
CONTROL
POWER
POWER
OUT
OUT
OUT
OUT
)
)
)
)
) or minimum power voltage (V
:
:
: LT1581-2.5
: LT1581
ADJ
LT1581-2.5
LT1581
= 0V.
OUT
CONDITIONS
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
= V
POWER
POWER
POWER
POWER
POWER
POWER
POWER
POWER
POWER
POWER
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
SENSE
POWER
= 3.3V, I
= 3.3V, I
= 3.3V, I
= 3.3V, I
= 3.3V, I
= 2.05V, I
= 2.05V, I
= 2.05V, I
= 2.05V, I
= 2.05V, I
. For the LT1581
= 5V, I
= 5V, I
= 5V, I
= 5V, I
= 5V, I
= 5V, I
= 5V, I
= 5V, I
= 2.75V, I
= 2.75V, I
= 2.75V, I
= 2.75V, I
= 2.75V, I
= 2.75V, I
= 2.75V, I
= 2.75V, I
). Both parameters
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
A
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
= 25 C. (Note 2)
= 100mA
= 1A
= 4A, T
= 4A
= 7A, T
= 7A
= 10A, T
= 10A
= 100mA
= 1A
= 4A
= 7A
= 10A
= 100mA
= 1A
= 4A
= 7A
= 10A
= 100mA
= 1A
= 4A, T
= 4A
= 7A, T
= 7A
= 10A, T
= 10A
The
J
J
J
= 25 C
= 25 C
= 25 C
J
J
J
= 25 C
= 25 C
denotes specifications which apply over the full operating
= 25 C
Note 4: For the LT1581 adjustable device the minimum load current is the
minimum current required to maintain regulation. Normally, the current in
the resistor divider used to set the output voltage is selected to meet the
minimum load current requirement.
Note 5: The CONTROL pin current is the drive current required for the
output transistor. This current will track output current with roughly a
1:100 ratio. The minimum value is equal to the quiescent current of the
device.
LT1581/LT1581-2.5
MIN
1.02
1.04
1.06
1.10
1.12
1.02
1.04
1.06
1.10
1.12
0.10
0.13
0.22
0.31
0.43
0.10
0.13
0.22
0.31
0.43
TYP
MAX
1.25
1.27
1.30
1.33
1.35
1.25
1.27
1.30
1.33
1.35
0.20
0.25
0.33
0.37
0.45
0.55
0.63
0.70
0.20
0.25
0.33
0.37
0.45
0.55
0.63
0.70
UNITS
3
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V