(Unless otherwise specified, these specifications apply over the operating ambient temperatures 0°C
≤
T
A
≤
125°C. Low duty cycle pulse testing
techniques are used which maintains junction and case temperatures equal to the ambient temperature.)
Parameter
Reference Voltage
Symbol
V
REF
Test Conditions
LX8580
Min. Typ.
Max.
1.243
1.237
1.237
1.250
1.250
1.250
1
2
2
0.002
0.65
80
3
30
33
60
60
9
0.90
1.00
1.05
1.06
1.10
0.05
0.10
0.20
0.30
0.30
0.52
0.56
5
1.257
1.263
1.263
3
6
7
0.020
2.70
10
60
70
120
120
1.15
1.15
1.18
1.20
1.30
0.17
0.22
0.38
0.40
0.50
0.62
0.80
10
Units
V
V
V
mV
mV
mV
%/W
°C/W
dB
mA
mA
mA
mA
µA
A
V
V
V
V
V
V
V
V
V
V
V
V
mA
Line Regulation
Load Regulation
Thermal Regulation
Thermal Resistance
Ripple Rejection
Control Pin Current (Note 3)
Adjust Pin Current
Current Limit
Dropout Voltage (Control Section)
Minimum V
CTRL
(Note 2)
(V
PWR
- V
OUT
)
Dropout Voltage (Power Section)
Minimum V
PWR
(Note 2)
(V
PWR
- V
OUT
)
(V
ADJ
= 0)
Minimum Load Current
V
CTRL
= 2.75V, V
PWR
= 2V, I
LOAD
= 10mA, T
J
= 25°C
V
CTRL
= 2.7V to 6V, V
PWR
= 1.75V to 5.5V, I
OUT
= 10mA to 4A
V
CTRL
= 2.7V to 6V, V
PWR
= 2.05V to 5.5V, I
OUT
= 10mA to 7A
∆V
REF
(V
IN
) V
CTRL
= 2.5V to 12V, V
PWR
= 1.75V to 5.5V, I
LOAD
= 10mA, T
J
= 25°C
V
CTRL
= 2.5V to 12V, V
PWR
= 1.75V to 5.5V, I
LOAD
= 10mA
∆V
REF
(I
OUT
) V
CTRL
= 2.75V, V
PWR
= 2.1V, I
LOAD
= 10mA to 7A (V
ADJ
= 0)
∆V
OUT
(Pwr)
30ms Pulse
R
θJT
Control Circuitry/Power Transistor
V
CTRL
= V
PWR
= 3.75V Avg, V
RIPPLE
= 1V
P-P
, V
ADJ
= 0V, I
OUT
= 4A
I
CTRL
V
CTRL
= 2.75V, V
PWR
= 2.05V, I
LOAD
= 100mA
V
CTRL
= 2.75V, V
PWR
= 2.05V, I
LOAD
= 4A
V
CTRL
= 2.75V, V
PWR
= 1.75V, I
LOAD
= 4A
V
CTRL
= 2.75V, V
PWR
= 2.05V, I
LOAD
= 7A
I
ADJ
V
CTRL
= 2.75V, V
PWR
= 2.05V, I
LOAD
= 0mA (V
ADJ
= 0)
V
CTRL
= 2.75V, V
PWR
= 2.05V,
∆V
OUT
= 100mV (V
ADJ
= 0)
I
θ(MAX)
V
CTRL
- V
OUT
V
PWR
= 2.05V, I
LOAD
= 100mA
V
PWR
= 2.05V, I
LOAD
= 1A
V
PWR
= 2.05V, I
LOAD
= 2.75A
V
PWR
= 2.05V, I
LOAD
= 4A
V
PWR
= 2.05V, I
LOAD
= 7A
V
PWR
- V
OUT
V
CTRL
= 2.75V, I
LOAD
= 100mA
V
CTRL
= 2.75V, I
LOAD
= 1A
V
CTRL
= 2.75V, I
LOAD
= 2.75A
V
CTRL
= 2.75V, I
LOAD
= 4A, T
J
= 25°C
V
CTRL
= 2.75V, I
LOAD
= 4A
V
CTRL
= 2.75V, I
LOAD
= 7A, T
J
= 25°C
V
CTRL
= 2.75V, I
LOAD
= 7A
V
CTRL
= 5V, V
PWR
= 3.3V, V
ADJ
= 0V
60
7.1
Note 2. Dropout is caused by either minimum control voltage (V
CTRL
) or minimum power voltage (V
PWR
). Both parameters are specified with respect to
the output voltage. The specifications represent the minimum input/output voltage required to maintain 1% regulation.
Note 3. 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.
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