LX8580A View Datasheet(PDF) - Microsemi Corporation
Part Name
Description
Manufacturer
LX8580A Datasheet PDF : 8 Pages
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INTEGRATED PRODUCTS
LX8580A
7.5A Very Low Dropout Positive Regulator
PRODUCTION DATA SHEET
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C ≤ TA ≤ 125°C. Low duty cycle
pulse testing techniques are used which maintains junction and case temperatures are equal to the ambient temperature.
Parameter
Reference Voltage
Line Regulation
Load Regulation
Thermal Regulation
Thermal Resistance
Ripple Rejection
VCTRL Pin Current (Note 2)
Adjust Pin Current
Current Limit
Dropout Voltage (Control Section)
Minimum VCTRL (Note 1)
(VPWR - VOUT)
Dropout Voltage (Power Section)
Minimum VPWR (Note 1)
(VPWR - VOUT)
(VADJ = 0)
Minimum Load Current
Symbol
Test Conditions
VREF
∆VREF(VIN)
∆VREF(IOUT)
∆VOUT(Pwr)
RθJT
ICTRL
IADJ
IOUT(MAX)
VCTRL-VOUT
VPWR-VOUT
VCTRL = 2.75V, VPWR = 2V, ILOAD = 10mA, TA=25°C
VCTRL = 2.7V to 6V, VPWR = 1.75V to 5.5V
ILOAD = 10mA to 4A
VCTRL = 2.7V to 6V, VPWR = 2.05V to 5.5V
ILOAD = 10mA to 7.5A
VCTRL = 2.5V to 10V, VPWR = 1.75V to 5.5V
ILOAD = 10mA, TA=25°C
VCTRL = 2.5V to 10V, VPWR = 1.75V to 5.5V
ILOAD = 10mA
VCTRL = 2.75V, VPWR = 2.1V ILOAD = 10mA to 7.5A
(VADJ = 0)
30ms Pulse
Control Circuitry/Power Transistor
VCTRL = VPWR = 3.75V Avg, VRIPPLE = 1VP-P
VADJ = 0, IOUT = 4A
VCTRL = 2.75V, VPWR = 2.05V, ILOAD = 100mA
VCTRL = 2.75V, VPWR = 2.05V, ILOAD = 3A
VCTRL = 2.75V, VPWR = 1.75V, ILOAD = 3A
VCTRL = 2.75V, VPWR = 2.05V, ILOAD = 7.5A
VCTRL = 2.75V, VPWR = 2.05V,
ILOAD = 0mA, VADJ = 0
VCTRL = 2.75V, VPWR = 2.05V, ∆VOUT = 100mV,
VADJ = 0
VPWR = 2.05, ILOAD = 100mA
VPWR = 2.05, ILOAD = 1.5A
VPWR = 2.05, ILOAD = 3A
VPWR = 2.05, ILOAD = 5A
VPWR = 2.05, ILOAD = 7.5A
VCTRL = 2.75V, ILOAD = 100mA
VCTRL = 2.75V, ILOAD = 1.5A, TA = 85°C
VCTRL = 2.75V, ILOAD = 1.5A
VCTRL = 2.75V, ILOAD = 3A, TA = 85°C
VCTRL = 2.75V, ILOAD = 3A
VCTRL = 2.75V, ILOAD = 5A, TA = 85°C
VCTRL = 2.75V, ILOAD = 5A
VCTRL = 2.75V, ILOAD = 7.5A, TA = 85°C
VCTRL = 2.75V, ILOAD = 7.5A
VCTRL = 5V, VPWR = 3.3V, VADJ = 0
Note 3
LX8580A
Min Typ Max
1.243 1.250 1.257
1.237 1.250 1.263
1.237 1.250 1.263
1
3
2
6
2
7
0.002 0.020
0.65 2.70
60
80
3
10
30
50
33
55
70
120
20
60
100
7.7
9
0.90 1.15
1.00 1.15
1.05 1.18
1.06 1.20
1.10 1.30
0.03 0.05
0.10 0.13
0.13 0.15
0.20 0.25
0.25 0.28
0.38 0.43
0.40 0.45
0.52 0.65
0.59 0.70
5
10
Units
V
mV
mV
mV
%/W
°C/W
dB
mA
µA
A
V
V
mA
Note 1: Dropout is caused by either minimum control voltage (VCTRL) or minimum power voltage (VPWR). Both parameters are specified with respect to
the output voltage. The specifications represent the minimum input/output voltage required to maintain 1% regulation.
Note 2: 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.
Note 3: Minimum load current is defined as the amount of output current required to maintain regulation. Typically this current provides the bias to the
external resistor divider network used to set the output voltage.
Copyright 2001
Rev. 1.4, 2003-01-06
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3
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