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LX8221DIDU-TR Datasheet(PDF) 3 Page - Microsemi Corporation

Part # LX8221DIDU-TR
Description  Dual 150mA CMOS Low Dropout Regulator
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Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

LX8221DIDU-TR Datasheet(HTML) 3 Page - Microsemi Corporation

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Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3
Copyright
© 2000
Rev. 1.1a, 2006-01-19
LX8221
Dual 150mA CMOS Low Dropout Regulator
PRODUCTION DATA SHEET
TM
®
RECOMM END E D O P ERATING CONDITIONS
LX8221
Parameter
Symbol
Min
Typ
Max
Units
Input Operating Voltage Range (Note 1)
VIN1, VIN2
2.5
6
V
Enable Input Voltage Range
EN1/2
VIN + 0.3V
V
Continuous Output Current Range
I
OUT
1, IOUT1
150
mA
Input Capacitor (VIN to GND)
CIN
1.0*
µF
Output Capacitor (VOUT to GND)
COUT
1.0*
2.2
µF
Note 1: The minimum VIN has to meet two conditions VIN > 2.5V and VIN > VOUT + VDROPOUT, at high line voltage conditions output current may be limited to less than
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.
ELECTRICAL CHA RACTERISTICS
Unless otherwise specified, the following specifications apply over the operating ambient temperature -40
°C
T
A 85°C except
where otherwise noted. Test conditions: VIN = VOUT + 0.5V; IOUT =10mA; CIN = 1µF; COUT = 1µF; TJ = TA using low duty cycle pulse
testing methods.
LX8221
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
TJ = 25°C
-1
1
Output Voltage (2.5, 2.7, 3.0, ADJ)
VOUT1/2
0mA
I
OUT1/2
100mA, (V
OUT1/2 + 0.5V)
V
IN
6V
-2.5
2.5
%
TJ = 25°C
1.163
1.187
Adjust Reference Voltage
VADJ
0mA
I
OUT1/2
100mA, 2.85V V
IN
6V
1.140
1.175
1.210
V
Line Regulation
Δ
Δ
IN
O
V
V
VRV
(VOUT1/2 + 0.5V)
V
IN
5V, I
OUT1/2 = 0.1mA
0.04
0.15
%/V
TJ = 25°C, 0.5mA
I
OUT1/2
150mA
0.5
Load Regulation
Δ
Δ
O
O
I
V
VRI
0.5mA
I
OUT1/2
100mA
1.5
%VNOM
ILOAD1/2 = 1mA, ΔVO = -1%
0.050
ILOAD1/2 = 50mA, ΔVO = -1%
0.175
ILOAD1/2 = 100mA, ΔVO = -1%
0.175
0.3
Dropout Voltage
()
O
IN
V
V
(Note 2)
VDO
ILOAD1/2 = 150mA, ΔVO = -1%
0.25
0.4
V
IGND
EN1 = High, EN2 = High
280
440
Ground Pin Current
ISTBY
EN1 = Low, EN2 = Low
1
µA
Adjust Input Bias Current
IADJ
VADJ = 1.25V
100
nA
Enable Pin Current
IEN
VEN1/2 = VIN
100
nA
VEN(IH)
2.0
Enable Threshold
VEN(IL)
0.4
V
Short Circuit Current Limit
IOUT(SC)
VOUT1 = 0V, VOUT2 = 0V
400
mA
Power Supply Rejection Ratio
PSRR
TJ = 25°C, f = 120Hz
50
dB
Output Noise
eN
TJ = 25°C, COUT = 10µF,CBYPASS = 470pF
50
µV
Thermal Shutdown Temperature
TSD
170
°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 2.8V. 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.


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