LX8821CDF Microsemi Corporation, LX8821CDF Datasheet - Page 3

• Manufacturer Part Number: LX8821CDF
• Description: DUAL Channel 2.5A LOW Dropout Regulator
• Manufacturer: Microsemi Corporation

Copyright © 2005
Rev. 1.1, 2005-03-09
Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C
otherwise noted and the following test conditions: V
low duty cycling methods. Typical values represent performance @ 23°C
Note 1: Minimum load current is defined as the amount of output current required to maintain regulation
FIXED OUTPUT: V
Total Output Voltage Variation
Line Regulation
Load Regulation
Current Limit
Minimum Load Current
ADJUSTABLEOUTPUT: V
Line Regulation
Load Regulation
Adjust Pin Current
Current Limit
Minimum Load Current
ENTIRE REGULATOR
Under Voltage Lockout
Ripple Rejection
RMS Output Noise
Thermal Shutdown
Output Voltage
Dropout Voltage, V
Minimum Operating Voltage
Quiescent Current
TM
Parameter
OUT 2
OUT 1
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OUT 2
Symbol
E L E C T R I C A L C H A R A C T E R I S T I C S
V
V
ΔV
ΔV
V
ΔV
ΔV
PSRR
I
I
CNTR
CONTROL
PWR
V
1 (MAX)
2 (MAX)
T
V
1
V
2
PWR
I
I
I
JSD
(V
1
(V
2
Q
1
2
1
(I
2
(I
-V
-V
1
2
IN
IN
Microsemi Microelectronics Division
)
)
2
)
)
2
CTRL
5mA < I
3.3V < V
3.3V<V
5mA < I
Note 1
5mA < I
2.97V < V
5mA < I
3.3V < V
3.3V<V
5mA < I
I
I
I
I
I
I
Note 1
V
Guaranteed Off
I
10Hz < f < 10kHz
I1 = I2 = 2.5A
f=120Hz, T
OUT
OUT
OUT
OUT
OUT
1
1
=I
PWR
= I
2
Microsemi
®
=5mA
= 5V, V
= 2.5A, ∆V
= 2.0A, ∆V
= 1.0A, ∆V
= 2.5A, ∆V
= 1.0A, ∆V
2
Rising, 3.0V<V
= 5mA, T
CTRL
CTRL
1
1
2
2
2
PWR
PWR
< 2.5A, 3.75V < V
< 2.5A, 3.75V < V
< 2.5A, V
< 2.5A, 3.75V < V
< 2.5A, V
PWR
<10V, 3.3V<V
<10V, 3.3V<V
J
PWR
< 5.5V
< 5.5V
= 25°C
< 3.63V
O
O
O
O
O
J
Test Conditions
= -2%
= -2%
= -2%
= -2%
= -2%
= 25°C
= 3.3V I
D
CTRL
CTRL
UAL
CTRL
=5V, V
=5V, V
< 10V, Both Outputs
PWR
PWR
OUT
C
CTRL
CTRL
CTRL
<5.5V, I
<5.5V, I
HANNEL
PWR
PWR
= 5mA, C
< 8V
< 8V
< 8V,
=3.3V
=3.3V
P
RODUCTION DATA
1
2
= 5mA
= 5mA
1, 2, 3, 4
2.5A L
= 10μF (Tantalum), and T
OW
1.455
1.225
1.225
Min
2.55
2.55
≤
60
D
T
S
ROPOUT
A
HEET
≤
LX8821
1.500
0.500
0.413
0.167
0.003
Typ
1.25
1.25
0.95
0.80
100°C except where
160
3.0
0.5
0.2
3.0
75
1
1
8
3
0
1
5
R
LX8821
Max
1.545
1.275
1.288
0.750
0.600
0.400
J
1.10
1.00
EGULATOR
2.6
3.3
2.2
= T
20
10
5
5
5
5
1
5
5
A
using
Units
%V
mV
mV
mA
mV
mV
mA
mA
mA
µA
dB
°C
V
V
V
V
V
V
A
A
V
Page 3
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