LX8580 데이터 시트보기 (PDF) - Microsemi Corporation
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LX8580 Datasheet PDF : 4 Pages
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PRODUCT DATABOOK 1996/1997
7A VERY LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
PRODUCTION DATA SHEET
LX8580
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the operating ambient temperatures 0°C ≤ TA ≤ 125°C. Low duty cycle pulse testing
techniques are used which maintains junction and case temperatures equal to the ambient temperature.)
Parameter
Symbol
Test Conditions
LX8580
Units
Min. Typ. Max.
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)
Minimum VCTRL (Note 2)
(VPWR - VOUT)
Dropout Voltage (Power Section)
Minimum VPWR (Note 2)
(VPWR - VOUT)
(VADJ = 0)
Minimum Load Current
VREF
VCTRL = 2.75V, VPWR = 2V, ILOAD = 10mA, TJ = 25°C
VCTRL = 2.7V to 6V, VPWR = 1.75V to 5.5V, IOUT = 10mA to 4A
VCTRL = 2.7V to 6V, VPWR = 2.05V to 5.5V, IOUT = 10mA to 7A
∆VREF (VIN) VCTRL = 2.5V to 12V, VPWR = 1.75V to 5.5V, ILOAD = 10mA, TJ = 25°C
VCTRL = 2.5V to 12V, VPWR = 1.75V to 5.5V, ILOAD = 10mA
∆VREF (IOUT) VCTRL = 2.75V, VPWR = 2.1V, ILOAD = 10mA to 7A (VADJ = 0)
∆VOUT (Pwr) 30ms Pulse
RθJT Control Circuitry/Power Transistor
VCTRL = VPWR = 3.75V Avg, VRIPPLE = 1VP-P, VADJ = 0V, IOUT = 4A
ICTRL
VCTRL = 2.75V, VPWR = 2.05V, ILOAD = 100mA
VCTRL = 2.75V, VPWR = 2.05V, ILOAD = 4A
VCTRL = 2.75V, VPWR = 1.75V, ILOAD = 4A
VCTRL = 2.75V, VPWR = 2.05V, ILOAD = 7A
IADJ
VCTRL = 2.75V, VPWR = 2.05V, ILOAD = 0mA (VADJ = 0)
Iθ(MAX) VCTRL = 2.75V, VPWR = 2.05V, ∆VOUT = 100mV (VADJ = 0)
VCTRL - VOUT VPWR = 2.05V, ILOAD = 100mA
VPWR = 2.05V, ILOAD = 1A
VPWR = 2.05V, ILOAD = 2.75A
VPWR = 2.05V, ILOAD = 4A
VPWR = 2.05V, ILOAD = 7A
VPWR - VOUT VCTRL = 2.75V, ILOAD = 100mA
VCTRL = 2.75V, ILOAD = 1A
VCTRL = 2.75V, ILOAD = 2.75A
VCTRL = 2.75V, ILOAD = 4A, TJ = 25°C
VCTRL = 2.75V, ILOAD = 4A
VCTRL = 2.75V, ILOAD = 7A, TJ = 25°C
VCTRL = 2.75V, ILOAD = 7A
VCTRL = 5V, VPWR = 3.3V, VADJ = 0V
1.243
1.237
1.237
60
7.1
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
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
Note 2.
Note 3.
Dropout is caused by either minimum control voltage (V ) or minimum power voltage (V ). Both parameters are specified with respect to
CTRL
PWR
the output voltage. The specifications represent the minimum input/output voltage required to maintain 1% regulation.
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.
Copyright © 1999
Rev. 1.0 11/99
3
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