LX8580 Microsemi Corporation, LX8580 Datasheet - Page 3

• Manufacturer Part Number: LX8580
• Description: 7a Very Low Dropout Positive Adjustable Regulator
• Manufacturer: Microsemi Corporation

Copyright © 1999
Rev. 1.0
(Unless otherwise specified, these specifications apply over the operating ambient temperatures 0°C ≤ T
techniques are used which maintains junction and case temperatures equal to the ambient temperature.)
Note 2. Dropout is caused by either minimum control voltage (V
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.
Reference Voltage
Line Regulation
Load Regulation
Thermal Regulation
Thermal Resistance
Ripple Rejection
Control Pin Current (Note 3)
Adjust Pin Current
Current Limit
Dropout Voltage (Control Section)
Dropout Voltage (Power Section)
Minimum Load Current
Minimum V
(V
Minimum V
(V
(V
11/99
PWR
PWR
ADJ
= 0)
the output voltage. The specifications represent the minimum input/output voltage required to maintain 1% regulation.
The minimum value is equal to the quiescent current of the device.
- V
- V
OUT
OUT
Parameter
)
)
PWR
CTRL
(Note 2)
(Note 2)
7A V
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
∆V
∆V
∆V
V
V
Symbol
CTRL
PWR
REF
OUT
REF
I
θ(MAX)
V
R
I
I
CTRL
ERY
ADJ
- V
- V
REF
θJT
(Pwr)
(I
(V
P
E L E C T R I C A L C H A R A C T E R I S T I C S
OUT
OUT
OUT
IN
) V
) V
L
R O D U C T I O N
OW
V
V
V
V
30ms Pulse
Control Circuitry/Power Transistor
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
PWR
PWR
PWR
PWR
PWR
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
= 2.5V to 12V, V
= 2.5V to 12V, V
= 2.05V, I
= 2.05V, I
= 2.05V, I
= 2.05V, I
= 2.05V, I
= 2.75V, V
= V
D
= 2.7V to 6V, V
= 2.7V to 6V, V
= 2.75V, V
= 2.75V, V
= 2.75V, V
= 2.75V, V
= 2.75V, V
= 2.75V, V
= 2.75V, I
= 2.75V, I
= 2.75V, I
= 2.75V, I
= 2.75V, I
= 2.75V, I
= 2.75V, I
= 5V, V
= 2.75V, V
ROPOUT
PWR
= 3.75V Avg, V
CTRL
PWR
LOAD
LOAD
LOAD
LOAD
LOAD
PWR
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
) or minimum power voltage (V
PWR
PWR
PWR
PWR
PWR
PWR
= 3.3V, V
PWR
P
= 2V, I
PWR
PWR
= 1A
= 2.75A
= 4A
= 7A
= 100mA
PWR
= 2.1V, I
= 2.05V, I
= 1.75V, I
= 2.05V, I
= 2.05V, I
PWR
= 2.05V, I
= 1A
= 2.75A
= 4A, T
= 4A
= 7A, T
= 7A
= 2.05V, ∆V
= 100mA
OSITIVE
= 1.75V to 5.5V, I
= 2.05V to 5.5V, I
= 1.75V to 5.5V, I
= 1.75V to 5.5V, I
Test Conditions
D
LOAD
ADJ
RIPPLE
J
J
LOAD
A T A
= 25°C
= 25°C
= 0V
LOAD
LOAD
LOAD
LOAD
= 10mA, T
LOAD
A
= 1V
OUT
= 10mA to 7A (V
DJUSTABLE
= 0mA (V
= 4A
= 4A
= 7A
= 100mA
= 100mV (V
P-P
, V
OUT
OUT
S
LOAD
LOAD
J
ADJ
= 10mA to 4A
= 10mA to 7A
H E E T
= 25°C
= 10mA, T
= 10mA
= 0V, I
ADJ
R
= 0)
ADJ
PWR
EGULATOR
ADJ
OUT
). Both parameters are specified with respect to
= 0)
J
= 25°C
= 0)
A
= 4A
≤ 125°C. Low duty cycle pulse testing
1.243
1.237
1.237
Min.
7.1
60
LX8580
1.250
1.250
1.250
0.002
Typ.
0.65
0.90
1.00
1.05
1.06
1.10
0.05
0.10
0.20
0.30
0.30
0.52
0.56
80
30
33
60
60
1
2
2
3
9
5
LX8580
1.257
1.263
1.263
0.020
Max.
2.70
1.15
1.15
1.18
1.20
1.30
0.17
0.22
0.38
0.40
0.50
0.62
0.80
120
120
10
60
70
10
3
6
7
Units
%/W
°C/W
m V
m V
m V
mA
mA
mA
mA
mA
d B
µA
A
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
3