Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3
Copyright
2000
Rev. 2.1d, 2001-03-15
W
M
.
LX8384x-xx
5A Low Dropout Positive Regulators
P
RODUCTION
A M I C R O S E M I C O M P A N Y
Unless otherwise specified, the following specifications apply over the operating ambient temperature for the LX8384x-xxC with
0
°
C
≤
T
A
≤
125
°
C and the LX8384-xxI with -25
°
C
≤
T
A
≤
125
°
C except where otherwise noted. Test conditions: V
IN
-V
OUT
= 3V;
I
OUT
= 5A. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient
temperature.
LX8384x-xx
Min
Typ
Parameter
Symbol
Test Conditions
Max
Units
LX8384-00 / 8384A-00 / 8384B-00 (ADJUSTABLE)
I
OUT
= 10mA, T
A
= 25°C
10mA < I
< 5A, 1.5V < (V
IN
-V
OUT
),
V
IN
< 10V, P < P
MAX
I
OUT
= 10mA, T
A
= 25°C
10mA < I
< 5A, 1.5V < (V
IN
-V
OUT
),
V
IN
< 10V, P < P
MAX
1.3V < (V
IN
-V
OUT
), V
IN
< 7V, I
OUT
= 10mA
1.3V < (V
IN
-V
OUT
), V
IN
< 10V, I
OUT
= 10mA
V
> V
REF
, V
- V
OUT
= 3V,
10mA < I
OUT
< 5A
1.238
1.250
1.262
V
1.225
1.250
1.270
V
1.240
1.250
1.260
V
Reference Voltage
(Note 4)
LX8384/84A-00
LX8384B-00
V
REF
1.238
1.250
1.262
V
0.015
0.035
0.2
0.3
%
%
Line Regulation (Note 2)
REF
(V
IN
)
Load Regulation (Note 2)
REF
(I
OUT
)
0.15
0.5
%
Thermal Regulation
(Pwr)
T
A
= 25°C, 20ms pulse
0.01
0.02
% / W
Ripple Rejection (Note 3)
V
OUT
= 5V, f= 120Hz, C
= 100μF Tantalum,
V
IN
= 6.5V, C
ADJ
= 10μF, I
OUT
= 5A
10mA < I
OUT
< I
OUT(MAX)
, 1.3V < (V
IN
-V
OUT
), V
IN
<10V
65
83
dB
Adjust Pin Current
Adjust Pin Current Change (Note 4)
I
ADJ
20
55
0.2
1.2
1.1
2
100
5
1.5
1.3
10
μA
μA
V
V
mA
ADJ
REF
= 1%, I
OUT
= 5A
Dropout Voltage
LX8384-00
LX8384A/84B-00
REF
= 1%, I
OUT
= 5A
V
IN
< 10V
(V
IN
- V
OUT
) < 7V
(V
IN
- V
OUT
) < 10V
T
A
= 125°C, 1000 hours
Minimum Load Current
I
OUT(MIN)
5
3
6
4
A
A
%
%
Maximum Output Current
I
OUT(MAX)
Long Term Stability (Note 3)
Temperature Stbility (Note 3)
RMS Output Noise (% of V
OUT
)
(Note 3)
LX8384-15 / 8384A-15 / 8384B-15 (1.5V FIXED)
OUT
(t)
0.3
0.25
1
OUT
(T)
OUT(RMS)
T
A
= 25°C, 10Hz < f < 10kHz
0.003
%
V
IN
= 5V, I
OUT
= 0mA, T
A
= 25°C
1.485
1.50
1.515
V
4.75V < V
IN
< 10V, 0mA < I
OUT
< 5A, P < P
MAX
1.470
1.50
1.530
V
V
IN
= 5V, I
OUT
= 0mA, T
A
= 25°C
1.488
1.50
1.512
V
Output Voltage
(Note 4)
LX8384/84A-15
LX8384B-15
V
OUT
4.75V < V
IN
< 10V, 0A < I
OUT
< 5A, P < P
MAX
1.485
1.50
1.515
V
4.75V < V
IN
< 7V
1
3
mV
Line Regulation (note 2)
OUT
(V
IN
)
4.75V < V
IN
< 10V
1
5
mV
Load Regulation (note 2)
OUT
(I
OUT
)
(Pwr)
V
IN
= 5V, 0mA < I
OUT
< I
OUT(MAX)
2.5
7
mV
Thermal Regulation
T
A
= 25°C, 20ms pulse
0.01
0.02
% / W
Ripple Rejection (note 3)
C
OUT
= 100μF (Tantalum), I
OUT
= 5A
60
83
dB
Quiescent Current
I
Q
0mA < I
OUT
< I
OUT(MAX)
, 4.75V < V < 10V
4
10
mA
OUT
= 1%, I
OUT
< I
OUT(MAX)
1.2
1.5
V
Dropout Voltage
LX8384-15
LX8384A/84B-15
OUT
= 1%, I
OUT
< I
OUT(MAX)
1
1.3
V
E
L
E
C
T
R
I
C
L
S