LX8815 Ver la hoja de datos (PDF) - Microsemi Corporation
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LX8815 Datasheet PDF : 5 Pages
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A MICROSEMI COMPANY
LX8815
Dual Channel 1A Low Dropout Regulator
PRELIMINARY
Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C ≤ TA ≤ 125°C except where
otherwise noted and the following test conditions: VIN = 5V, IOUT = 10mA, C1 = 4.7µF (Tantalum), C2 = 4.7µF (Tantalum), and TJ = TA
25°C using low duty cycling methods.
Parameter
Symbol
Test Conditions
LX8815-33xx
Min Typ Max
FIXED OUTPUT 1
Output Voltage
Line Regulation
Load Regulation
V1
∆V1(VIN)
∆V1(I1)
VIN = 5V, IOUT = 5mA, TJ = 25°C
5mA < I1 < 1A, 4.50V < VIN < 10V
4.75V < VIN < 10V, IOUT = 5mA
5mA < I1 < 1A, VIN = 4.75V
3.250
3.234
3.300
3.300
0.3
0.8
3.350
3.366
5.0
10
Dropout Voltage
Current Limit
Minimum Load Current
FIXED OUTPUT 2
∆V
IOUT (MAX)
IL
ILOAD = 1A, ∆V1 = -2%
(VIN – V1)
Note 1
1.1 1.25
1.0 1.4
0
2
Output Voltage
• LX8815-3325
• LX8815-3318
Line Regulation
V1
∆V1(VIN)
VIN = 5V, IOUT = 5mA, TJ = 25°C
5mA < I1 < 1A, 4.50V < VIN < 10V
VIN = 5V, IOUT = 5mA, TJ = 25°C
5mA < I1 < 1A, 4.50V < VIN < 10V
4.75V < VIN < 10V, IOUT = 5mA
2.462
2.450
1.773
1.764
2.50
2.50
1.80
1.80
0.02
2.537
2.550
1.827
1.36
0.15
Load Regulation
Dropout Voltage
Current Limit
Minimum Load Current
ENTIRE REGULATOR
∆V1(I1)
∆V
IOUT (MAX)
IL
5mA < I1 < 1A, VIN = 4.75V
VIN > 4.5V, ILOAD = 1A, ∆V1 = -1%
(VIN – V1)
Note 1
0.04 0.3
1.1 1.3
1.0 1.4
1
2
Quiescent Current
Ripple Rejection
RMS Output Noise (% of VOUT)
IQ
VIN < 10V, I1 = 5mA, I2 = 5mA
PSRR f=120Hz, VIN = 5V
VOUT (RMS) 10Hz < f < 10kHz
1.8
7
60
75
0.003
Thermal Shutdown
TJSD
140
Note 1: Minimum load current is defined as the amount of output current required to maintain regulation.
Units
V
mV
mV
V
A
mA
V
%mV
%mV
V
A
mA
mA
dB
%V1
°C
Copyright © 2000
Rev. 0.2a, 2000-11-20
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 4
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