參數(shù)資料
型號(hào)： LX8221-GIDUT
英文描述： Analog IC
中文描述： 模擬IC
文件頁數(shù)： 3/9頁
文件大小： 211K
代理商： LX8221-GIDUT
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3
Copyright
2000
Rev. 1.0, 2002-01-02
W
M
.
C
LX8221
Dual 150mA CMOS Low Dropout Regulator
P
RODUCTION
R E C O M M E N D E D O P E R A T I N G C O N D I T I O N S
LX8221
Typ
150
2.2
Parameter
Symbol
Min
2.5
1.0*
1.0*
Max
6
V
IN
+ 0.3V
Units
Input Operating Voltage Range (Note 1)
Enable Input Voltage Range
Continuous Output Current Range
Input Capacitor (V
IN
to GND)
Output Capacitor (V
OUT
to GND)
VIN1, VIN2
EN1/2
I
OUT
1,
I
OUT
1
C
IN
C
OUT
V
V
mA
μF
μF
Note 1: The minimum V
IN
has to meet two conditions V
IN
> 2.5V and V
IN
> V
OUT
+ V
DROPOUT
.
* Size your output capacitor to meet the transient loading requirement. If you have a very dynamic load, a lower ESR and larger value capacitor will improve the response to
these load steps.
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 -40
°
C
≤
T
A
≤
125
°
C except
where otherwise noted. Test conditions:
V
IN
= V
OUT
+ 0.5V
;
I
OUT
=10mA
;
C
IN
= 1
μ
F; C
OUT
= 1
μ
F; T
J
= T
A
using low duty cycle pulse
testing methods.
LX8221
Typ
Parameter
Symbol
Test Conditions
Min
Max
Units
T
J
= 25°C
0mA
≤
I
OUT1/2
≤
150mA, (V
OUT1/2
+ 0.5V)
≤
V
IN
≤
6V
T
J
= 25°C
0mA
≤
I
OUT1/2
≤
150mA, 2.85V
≤
V
IN
≤
6V
-1
-2.5
1.163
1.152
1
Output Voltage (2.5, 2.7, 3.0, ADJ)
VOUT1/2
2.5
1.187
1.200
%
Adjust Reference Voltage
V
ADJ
1.175
V
Line Regulation
IN
O
V
V
V
RV
(V
OUT1/2
+ 0.5V)
≤
V
IN
≤
6V, I
OUT1/2
= 0.1mA
0.04
0.15
%/V
Load Regulation
O
O
I
V
V
RI
0.5mA
≤
I
OUT1/2
≤
100mA
1.5
%V
NOM
I
LOAD1/2
= 1mA,
VO
= -1%
I
LOAD1/2
= 50mA,
VO
= -1%
I
LOAD1/2
= 100mA,
VO
= -1%
I
LOAD1/2
= 150mA,
VO
= -1%
EN1
= High, EN2
= High
EN1
= Low, EN2
= Low
V
ADJ
= 1.25V
V
EN1/2
= V
IN
VOUT1 = 0V, VOUT2 = 0V
T
J
= 25°C, f = 120Hz
T
J
= 25°C, C
OUT
= 10uF,C
BYPASS
= 470 pF
0.050
0.175
0.3
0.4
440
1
100
100
0.4
0.175
0.25
280
400
50
50
170
Dropout Voltage
(
(Note 2)
)
O
IN
V
V
V
DO
V
I
GND
I
STBY
I
ADJ
I
EN
V
EN(IH)
V
EN(IL)
I
OUT(SC)
PSRR
e
N
T
SD
Ground Pin Current
μA
Adjust Input Bias Current
Enable Pin Current
nA
nA
2.0
Enable Threshold
V
Short Circuit Current Limit
Power Supply Rejection Ratio
Output Noise
Thermal Shutdown Temperature
mA
dB
μV
°C
Note 2: Dropout voltage is defined as the input to output differential at which the output voltage drops 1% below the nominal value. Dropout voltage specification
applies only to output voltages greater than 2.8 V. For output voltages below 2.8 V, the dropout voltage is nothing but the input to output differential, since the
minimum input voltage is 2.8 V.
E
L
E
C
T
R
I
C
A
L
S
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