P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
LX8384-xx/8384A-xx/8384B-xx
5 A L O W
D
R O P O U T
P
O S I T I V E
R
E G U L A T O R S
P R O D U C T I O N D A T A S H E E T
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for the LX8384-xxC/8384A-xxC/8384B-xxC with
0°C ≤ TA ≤ 125°C, and the LX8384-xxI with -25°C ≤ TA ≤ 125°C; VIN - VOUT = 3V; IOUT = 5A. Low duty cycle pulse testing techniques are used which
maintains junction and case temperatures equal to the ambient temperature.)
LX8384-00 / 8384A-00 / 8384B-00 (Adjustable)
LX8384/84A/84B-00
Parameter
Symbol
Test Conditions
Units
Min. Typ.
Max.
1.238
1.250
1.262
V
V
V
Reference Voltage
(Note 4)
LX8384/84A-00
LX8384B-00
VREF
IOUT = 10mA, TA = 25°C
10mA ≤ IOUT ≤ 5A, 1.5V ≤ (V - VOUT), V ≤ 10V, P ≤ PMAX
1.225 1.250 1.270
1.240 1.250 1.260
1.238 1.250 1.262
IN
IN
IOUT = 10mA, TA = 25°C
10mA ≤ IOUT ≤ 5A, 1.5V ≤ (V - VOUT), V ≤ 10V, P ≤ PMAX
V
IN
IN
0.015
0.035
0.15
0.01
83
0.2
0.3
%
%
%
%/W
dB
Line Regulation (Note 2)
∆VREF 1.3V ≤ (VIN - VOUT), VIN ≤ 7V, IOUT = 10mA
(VIN)
1.3V ≤ (VIN - VOUT), VIN ≤ 10V, IOUT = 10mA
0.5
0.02
Load Regulation (Note 2)
Thermal Regulation
∆VREF (IOUT
)
VOUT ≥ VREF, VIN - VOUT = 3V, 10mA ≤ IOUT ≤ 5A
∆VOUT(Pwr) TA = 25°C, 20ms pulse
VOUT = 5V, f =120Hz, COUT = 100µf Tantalum, VIN = 6.5V
65
20
Ripple Rejection (Note 3)
CADJ = 10µF, IOUT = 5A
55
0.2
1.2
1.1
2
100
5
µA
µA
V
Adjust Pin Current
Adjust Pin Current Change (Note 4)
IADJ
∆IADJ
∆V
10mA ≤ IOUT ≤ IOUT (MAX) , 1.3V ≤ (V - VOUT), V ≤ 10V
IN
IN
1.5
1.3
10
Dropout Voltage
LX8384-00
∆VREF = 1%, IOUT = 5A
∆VREF = 1%, IOUT = 5A
LX8384A/84B-00
V
mA
A
Minimum Load Current
IOUT (MIN)
V ≤ 10V
IN
5
3
6
Maximum Output Current
IOUT (MAX) (VIN - VOUT) ≤ 7V
(VIN - VOUT) ≤ 10V
4
A
0.25
0.3
0.003
%
%
%
Temperature Stability (Note 3)
Long Term Stability (Note 3)
∆VOUT (T)
∆VOUT (t) TA = 125°C, 1000 hours
1
RMS Output Noise (% of VOUT) (Note 3) VOUT (RMS) TA = 25°C, 10Hz ≤ f ≤ 10kHz
LX8384-15 / 8384A-15 / 8384B-15 (1.5V Fixed)
LX8384/84A/84B-15
Parameter
Symbol
Test Conditions
Units
Min. Typ.
Max.
Output Voltage
(Note 4)
LX8384/84A-15
LX8384B-15
VOUT
VIN = 5V, IOUT = 0mA, TA = 25°C
1.485
1.470
1.488
1.485
1.50
1.50
1.50
1.50
1
1.515
1.530
1.512
1.515
3
V
V
4.75V ≤ VIN ≤ 10V, 0mA ≤ IOUT ≤ 5A, P ≤ PMAX
VIN = 5V, IOUT = 0mA, TA = 25°C
4.75V ≤ VIN ≤ 10V, 0mA ≤ IOUT ≤ 5A, P ≤ PMAX
V
V
Line Regulation (Note 2)
∆VOUT 4.75V ≤ VIN ≤ 7V
(VIN)
mV
mV
mV
% / W
dB
mA
V
4.75V ≤ VIN ≤ 10V
1
5
7
2.5
0.01
83
Load Regulation (Note 2)
Thermal Regulation
Ripple Rejection (Note 3)
Quiescent Current
∆VOUT (IOUT
)
VIN = 5V, 0mA ≤ IOUT ≤ IOUT (MAX)
∆VOUT(Pwr) TA = 25°C, 20ms pulse
COUT = 100µF (Tantalum), IOUT = 5A
0.02
60
5
IQ
∆V
0mA ≤ IOUT ≤ IOUT (MAX) , 4.75V ≤ VIN ≤ 10V
∆VOUT = 1%, IOUT ≤ IOUT (MAX)
4
1.2
1
10
1.5
1.3
Dropout Voltage
LX8384-15
LX8384A/84B-15
V
∆VOUT = 1%, IOUT ≤ IOUT (MAX)
6
A
Maximum Output Current
IOUT (MAX) VIN ≤ 7V
0.25
0.3
0.003
%
Temperature Stability (Note 3)
Long Term Stability (Note 3)
RMS Output Noise (% of VOUT) (Note 3) VOUT (RMS) TA = 25°C, 10Hz ≤ f ≤ 10kHz
∆VOUT (T)
1
%
%
∆VOUT (t) TA = 125°C, 1000 hours
Note 2. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to
heating effects are covered under the specification for thermal regulation.
Note 3. These parameters, although guaranteed, are not tested in production.
Note 4. See Maximum Output Current Section above.
Copyright © 1997
Rev. 1.9 12/97
3
MICROSEMI [ Microsemi ]
