LX8221 Microsemi Corporation, LX8221 Datasheet - Page 3

• Manufacturer Part Number: LX8221
• Description: Dual 150ma Cmos Low Dropout Regulator
• Manufacturer: Microsemi Corporation

Copyright © 2000
Rev. 1.1a, 2006-01-19
150mA due to the power dissipation.
* 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.
Unless otherwise specified, the following specifications apply over the operating ambient temperature -40°C
where otherwise noted. Test conditions: V
testing methods.
Note 1: The minimum V
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 2.8V. For output voltages below 2.8V, the dropout voltage is nothing but the input to output differential, since the
minimum input voltage is 2.8V.
Input Operating Voltage Range (Note 1)
Enable Input Voltage Range
Continuous Output Current Range
Output Voltage (2.5, 2.7, 3.0, ADJ)
Adjust Reference Voltage
Line Regulation
Load Regulation
Dropout Voltage
(Note 2)
Ground Pin Current
Adjust Input Bias Current
Enable Pin Current
Enable Threshold
Short Circuit Current Limit
Power Supply Rejection Ratio
Output Noise
Thermal Shutdown Temperature
Input Capacitor (V
Output Capacitor (V
TM
Parameter
⎛
⎜
⎝
⎛
⎜
⎝
(
V
Δ
IN
IN
Δ
V
IN
OUT
has to meet two conditions V
to GND)
V
O
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
O
−
to GND)
Δ
Δ
V
V
I
O
IN
O
)
⎞
⎟
⎠
Parameter
⎞
⎟
⎠
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
VOUT1/2
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
I
V
V
OUT(SC)
PSRR
I
V
V
I
V
I
T
V
STBY
EN(IH)
GND
I
EN(IL)
ADJ
e
IN
EN
ADJ
DO
SD
RV
RI
IN
N
= V
> 2.5V and V
OUT
T
T
T
0mA
T
0mA
(V
T
0.5mA
I
I
I
I
EN1 = High, EN2 = High
EN1 = Low, EN2 = Low
V
V
VOUT1 = 0V, VOUT2 = 0V
Integrated Products Division
LOAD1/2
LOAD1/2
LOAD1/2
LOAD1/2
J
J
J
J
J
ADJ
EN1/2
+ 0.5V; I
OUT1/2
= 25°C, f = 120Hz
= 25°C, C
= 25°C
= 25°C
= 25°C, 0.5mA
IN
= 1.25V
®
≤
≤
Microsemi
= V
> V
I
I
≤
= 50mA, Δ
= 100mA, Δ
= 150mA, Δ
OUT1/2
OUT1/2
= 1mA, Δ
+ 0.5V)
I
OUT1/2
OUT
IN
OUT
OUT
+ V
≤
≤
100mA, 2.85V
100mA, (V
≤
=10mA; C
DROPOUT
Test Conditions
≤
Dual 150mA CMOS Low Dropout Regulator
= 10µF,C
100mA
VO
V
VO
≤
VO
VO
IN
= -1%
I
OUT1/2
= -1%
≤
, at high line voltage conditions output current may be limited to less than
= -1%
= -1%
5V, I
OUT1/2
BYPASS
≤
IN
OUT1/2
150mA
VIN1, VIN2
= 1
Symbol
≤
I
OUT
EN1/2
+ 0.5V)
V
C
= 470pF
C
µ
IN
= 0.1mA
1,
OUT
P
F; C
IN
I
≤
OUT
RODUCTION
6V
1
≤
OUT
V
IN
= 1
≤
Min
6V
1.0*
1.0*
2.5
µ
F; T
D
J
1.163
1.140
ATA
Min
= T
-2.5
2.0
LX8221
-1
Typ
150
2.2
A
S
using low duty cycle pulse
LX8221
HEET
1.175
0.175
Typ
0.04
0.25
≤
280
400
170
0.5
50
50
V
T
IN
Max
A
+ 0.3V
6
≤
1.187
1.210
0.050
0.175
Max
0.15
440
100
100
2.5
1.5
0.3
0.4
0.4
85°C except
1
1
LX8221
Units
%V
mA
Units
µF
µF
V
V
%/V
mA
µA
nA
nA
dB
µV
°C
%
V
V
V
NOM
Page 3