LT1580 LINER [Linear Technology], LT1580 Datasheet - Page 4

• Manufacturer Part Number: LT1580
• Description: 7A, Very Low Dropout Regulator
• Manufacturer: LINER [Linear Technology]

LT1580/LT1580-2.5
ELECTRICAL CHARACTERISTICS
PARAMETER
Minimum V
(V
Minimum V
(V
(V
The
temperature range.
Note 1: Unless otherwise specified V
adjustable device V
Note 2: For the LT1580, dropout is caused by either minimum control
voltage (V
are specified with respect to the output voltage. The specifications represent
the minimum input/output voltage required to maintain 1% regulation.
4
TYPICAL PERFORMANCE CHARACTERISTICS
POWER
POWER
ADJ
140
120
100
80
60
40
20
0
= 0V)
denotes specifications which apply over the full operating
Control Pin Current
vs Output Current
0
– V
– V
CONTROL
POWER
POWER
INDICATES GUARANTEED TEST POINTS
0 C T
OUT
OUT
1
)
)
: LT1580-2.5
: LT1580
) or minimum power voltage (V
J
OUTPUT CURRENT (A)
DATA SHEET LIMIT
2
ADJ
125 C
= 0V.
3
4
TYPICAL
DEVICE
5
OUT
W
CONDITIONS
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
= V
6
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
1580 G01
SENSE
U
7
POWER
. For the LT1580
= 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
2
0
1
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
0
Minimum Control Voltage
= 100mA
= 1A
= 4A, T
= 4A
= 7A, T
= 7A, 0 C T
= 6.5A, – 40 C T
INDICATES GUARANTEED TEST POINTS
0 C T
= 100mA
= 1A
2.75A
= 4A, T
= 4A
= 7A, T
= 7A, 0 C T
= 6.5A, – 40 C T
1
J
J
DATA SHEET LIMIT
= 25 C
= 25 C
J
OUTPUT CURRENT (A)
2
J
J
T
= 25 C
= 25 C
125 C
J
J
= 125 C
3
J
125 C
Note 3: For the LT1580 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 4: 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.
J
125 C
4
J
0 C
0 C
T
5
J
= 25 C
6
1580 G02
7
1.0
0.5
0
0
Dropout Voltage —
Minimum Power Voltage
INDICATES GUARANTEED TEST POINTS
0 C T
MIN
1
J
OUTPUT CURRENT (A)
2
DATA SHEET LIMIT
125 C
0.10
0.15
0.34
0.54
0.70
0.70
0.10
0.15
0.26
0.34
0.54
0.70
0.70
TYP
3
T
J
4
= 25 C
MAX
0.17
0.22
0.40
0.50
0.62
0.80
0.80
0.17
0.22
0.38
0.40
0.50
0.62
0.80
0.80
5
T
J
= 125 C
6
UNITS
1580 G03
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
7