參數(shù)資料
型號： LX8821CDF
廠商： MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection
中文描述： DUAL OUTPUT, FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, PSSO7
封裝： ROHS COMPLIANT, PLASTIC, S-PAK, 7 PIN
文件頁數(shù)： 3/6頁
文件大小： 257K
代理商： LX8821CDF
P
RODUCTION DATA
S
HEET
Microsemi
Microsemi Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3
Copyright
2005
Rev. 1.1, 2005-03-09
W
M
.
C
LX8821
D
UAL
C
HANNEL
2.5A
L
OW
D
ROPOUT
R
EGULATOR
TM
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
Unless otherwise specified, the following specifications apply over the operating ambient temperature 0
°
C
≤
T
A
≤
100
°
C except where
otherwise noted and the following test conditions: V
CTRL
= 5V, V
PWR
= 3.3V I
OUT
= 5mA, C
1, 2, 3, 4
= 10
μ
F (Tantalum), and T
J
= T
A
using
low duty cycling methods. Typical values represent performance @ 23°C
LX8821
Typ
Parameter
Symbol
Test Conditions
Min
Max
Units
`
FIXED OUTPUT: V
OUT 1
Total Output Voltage Variation
Line Regulation
V
1
5mA < I
1
< 2.5A, 3.75V < V
CTRL
< 8V
3.3V < V
PWR
< 5.5V
1.455
1.500
1.545
V
Δ
V
1
(V
IN
)
3.3V<V
CTRL
<10V, 3.3V<V
PWR
<5.5V, I
1
= 5mA
1
5
mV
Load Regulation
Δ
V
1
(I
1
)
5mA < I
1
< 2.5A, V
CTRL
=5V, V
PWR
=3.3V
1
5
mV
Current Limit
I
1 (MAX)
2.55
3.0
A
Minimum Load Current
I
1
Note 1
0
5
mA
`
ADJUSTABLEOUTPUT: V
OUT 2
5mA < I
2
< 2.5A, 3.75V < V
CTRL
< 8V
2.97V < V
PWR
< 3.63V
5mA < I
2
< 2.5A, 3.75V < V
CTRL
< 8V,
3.3V < V
PWR
< 5.5V
3.3V<V
CTRL
<10V, 3.3V<V
PWR
<5.5V, I
2
= 5mA
1.225
1.25
1.275
Output Voltage
V
2
1.225
1.25
1.288
V
Line Regulation
Δ
V
2
(V
IN
)
0.5
5
mV
Load Regulation
Δ
V
2
(I
2
)
5mA < I
2
< 2.5A, V
CTRL
=5V, V
PWR
=3.3V
8
20
mV
I
OUT
= 2.5A,
V
O
= -2%
0.500
0.750
I
OUT
= 2.0A,
V
O
= -2%
0.413
0.600
V
PWR
-V
2
I
OUT
= 1.0A,
V
O
= -2%
0.167
0.400
V
I
OUT
= 2.5A,
V
O
= -2%
0.95
1.10
Dropout Voltage, V
OUT 2
V
CNTR
-V
2
I
OUT
= 1.0A,
V
O
= -2%
0.80
1.00
V
Adjust Pin Current
I
1
= I
2
= 5mA, T
J
= 25°C
0.2
1
μA
Current Limit
I
2 (MAX)
2.55
3.0
A
Minimum Load Current
I
2
Note 1
1
5
mA
`
ENTIRE REGULATOR
V
PWR
2.6
V
Minimum Operating Voltage
V
CONTROL
V
Rising, 3.0V<V
CTRL
< 10V, Both Outputs
Guaranteed Off
I
1
=I
2
=5mA
3.3
V
Under Voltage Lockout
2.2
V
3
5
mA
Quiescent Current
I
Q
I1 = I2 = 2.5A
5
10
mA
Ripple Rejection
PSRR
f=120Hz, T
J
= 25
°
C
60
75
dB
RMS Output Noise
10Hz < f < 10kHz
0.003
%V
OUT
Thermal Shutdown
T
JSD
160
°
C
Note 1: Minimum load current is defined as the amount of output current required to maintain regulation
E
L
E
C
T
R
I
C
A
L
S
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