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LP2951ACS-L-3-3/TR [EXAR]

100mA, LOW DROPOUT VOLTAGE REGULATORS; 100mA时低压差稳压器
LP2951ACS-L-3-3/TR
型号： LP2951ACS-L-3-3/TR
厂家： EXAR CORPORATION    EXAR CORPORATION
描述：

100mA, LOW DROPOUT VOLTAGE REGULATORS
100mA时低压差稳压器

线性稳压器IC 调节器 电源电路 光电二极管 输出元件
文件： 总16页 (文件大小：806K)
中文：  中文翻译
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LP2950/LP2951  
100mA, LOW DROPOUT VOLTAGE REGULATORS  
OCTOBER 6, 2008  
REV. G  
  
  
•         
•    
•   
•      
•        
•        
•      
•      
•    
•    
•    
•   
•  
•    µ    
•   Lead Free, RoHS Compliant Packages:  
      
•      
•   
•   
•   
    
•        
•     
•        
Now Available in Lead Free Packaging  
   
                    
                  
                       
                    
          
                           
                      
                
     
UNREGULATED DC  
5V  
@
MAX  
ꢀ00mA  
ꢀ
7
8
+
INPUT  
FEEDBACK  
OUTPUT  
2
SENSE  
ꢀ80k  
Ω
+
_
ꢂ
ERROR  
ꢁ
FROM  
CMOS OR  
TTL  
AMPLIFIER  
ꢁꢁ0k  
Ω
5V TAP  
SHUTDOWN  
+
ꢂ0 mV  
ꢂ0k  
Ω
ꢀµF  
5
______  
ERROR  
.
+
+
_
.
ERROR DETECTION  
COMPARATOR  
TO CMOS OR  
TTL  
ꢀ.2ꢁV  
+
ꢃ
REFERENCE  
GROUND  
Rev G  
LP2950-5ꢀ Low Dropout Linear Regulators  
© 2008 Exar Corporation  
ꢀ
  
    
    
      
       
       
       
        
     
     
    
       
            
  
  
  
  
  
  
  
   
    
  
    
   
   
   
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 ≤≤  
    
 µ≤≤   
  
  
  
  
  
  
≤  
    
   
   
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 ≤≤  
    
 µ≤≤   
≤  
   
  
  
  
  
  
  
    
   
  
  
  
  
  
   
   
 ≤≤    
     
  
  
  
  
  
  
  
  
  
     
 µ≤≤   
   
   
  µ  
  
  
  
  
  
  
  
  
  
  
    
  µ  
    
   
  
  
  
  
  
  
µ  
  
   
   
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
   
  
 µ  
µ   
µ   
µ   
    
  µ  
  µ     
        
    
  
  
   
  
  
  
  
  
  
  
  
  
  
  
  
   
     
    
  
  
  
  
© 2008 Exar Corporation  
Rev G  
LP2950-5ꢀ Low Dropout Linear Regulators  
2
LP2950/51  
C
O
N
DITIONS  
L
P2  
9
5
1
A
C
L
P2  
9
5
1
C
P
A
R
A
ME  
T
E
R
(Note2)  
Min. Typ.  
Min. Typ. Max.  
U
NITS  
Max.  
8-PinVersionsonly(Continued)  
ReferenceVoltage  
Temperature  
Coefficient  
20  
50  
p
p
m/°C  
FeedbackPinBias  
Current  
0.1  
0.1  
nA/°C  
Temperature  
Coefficient  
ErrorComparator  
OutputLeakage  
Current  
V =30  
V
0.0  
1
1
0.0  
1
1
μ
A
O
H
OutputLo  
w
Voltage V =4.5  
V
1
5
0
2
5
0
1
5
0
2
50  
m
V
V
I
N
I L=4  
0
0μ  
A
O
UpperThreshold  
(Note7)  
(Note7)  
(Note7)  
40  
6
0
40  
6
0
m
Voltage  
LowerThreshold  
Voltage  
75  
15  
95  
75  
15  
95  
mV  
mV  
Hysteresis  
S
h
utdownIn  
put  
InputlogicVoltage  
Low(RegulatorON)  
1.3  
30  
0.7  
50  
10  
1.3  
0.7  
V
High(RegulatorOFF)  
2.0  
2.0  
V
ShutdownPinInput V =2.4V  
30  
50  
μA  
μA  
S
Current  
V =30V  
675 800  
675  
800  
S
RegulatorOutput  
CurrentinShutdown  
Thermal  
(Note8)  
3
3
10  
μA  
8PinSOIC  
3PinTO-92  
°C/W  
128.4  
Resistanceθ  
JA  
°C/W  
131.  
9
Note1: Outputorreferencevoltagetemperaturecoefficientsdefinedastheworstcasevoltagechangedividedbythetotaltemperaturerange.  
Note2:UnlessotherwisespecifiedalllimitsguaranteedforT =25°C,V =6V,IL=1  
0
0μAandC =1  
μ
F. Additionalco  
n
ditionsforthe8-pinversionsarefeedback  
J
IN  
L
tiedto5Vtapandoutputtiedtooutputsense(V T=5V)andV U WN ≤0.8V.  
U
S
D
O
Note3:RegulationismeasuredatconstantjunctOiontemperature,HusTingpulsetestingwithalo  
wd  
utycycle. Changesinoutputvoltageduetoheatingeffectsare  
coveredu  
n
derthespecificationforthermalregulation.  
Note4: LineregulationfortheLP2  
9
5
1istestedatI =1  
m
A. ForIL=1  
0
0 μAandT =1  
2
5°C,lineregulationisguaranteedbydesignto0.2%. Seetypical  
L
J
performancecharacteristicsforlineregulationversustemperatureandloadcurrent.  
Note5:Dro  
p
o
utvoltageisdefinedastheinputtooutputdifferentialatwhichtheoutputvoltagedrops100m  
V
belowitsn  
o
minalvaluemeasuredat1  
Vdifferential.At  
verylo  
w
valuesofprogrammedoutputvoltage,theminimumin  
p
utsupplyvoltageof2V(2.3  
Vovertemperature)mustbetakenintoaccount.  
Note6:V E  
≤
V
UT ≤(V -1V),2.3 ≤VIN≤3  
0
V,1  
0
0
μ
A≤I ≤1  
0
0
m
A,T ≤TJM  
.
R
O
IN  
L
J
A
X
Note7:ComFparatorthresholdsareexpressedintermsofavoltagedifferentialatthefeedbackterminalbelowthen  
o
minalreferencevoltagemeasuredat6Vin  
p
ut. To  
expressthesethresholdsintermsofoutputvoltagechange,multiplybytheerroramplifiergain=V UT/V F=(R +R )/R . Forexample,ataprogrammedoutput  
O
R
E
1
2
2
voltageof5V,theerroroutputisguaranteedtogolo  
wwhentheoutputdropsby95m  
Vx5V/1.2  
35=384mV.ThresholdsremainconstantasapercentofV UTasV U  
O
O T  
isvaried,withthedro  
p
o
utwarningoccurringattypically5%below  
n
o
minal,7.5%guaranteed.  
Note8: V  
WN ≥2V,V ≤3  
0
V,V U =0,Feedbackpintiedto5  
V
Tap.  
S
H T  
D
IN  
O T  
Note9: AlltUypiOcalvaluesarenotguaranteed.Thevaluecouldvaryfromlottolot.  
© 2008 Exar Corporation  
Rev G  
LP2950-5ꢀ Low Dropout Linear Regulators  
3
   
    
10  
6
250  
225  
200  
5
4
RL= 50k Ω  
175  
150  
1
RL  
=
3
2
125  
RL=50kΩ  
RL  
=
100  
75  
0.1  
50  
25  
0
1
0
0.01  
0
1
2
3
4
5
6
7
8
9
10  
0.1  
1
10  
100  
0
1
2
3
4
5
6
INPUT VOLTAGE (VOLTS)  
LOAD CURRENT (mA)  
INPUT VOLTAGE (VOLTS)  
Input Current  
Quiescent Current  
Dropout Characteristics  
16  
320  
280  
160  
150  
140  
130  
120  
110  
100  
90  
80  
70  
RL=50  
Ω
VOUT = 5V  
240  
200  
160  
12  
IL= 1mA  
IL= 0  
VIN = 6V  
IL= 100mA  
120  
80  
60  
50  
40  
30  
20  
10  
0
8
4
40  
0
0
1
2
3
4
5
6
7
8
-75  
-25  
0
25 50 75 100 125 150  
-50  
0
1
2
3
4
5
6
7
8
9 10  
INPUT VOLTAGE (VOLTS)  
TEMPERATURE (ºC)  
INPUT VOLTAGE (VOLTS)  
Ground Current  
Ground Current  
Input Current  
16  
190  
170  
150  
130  
14  
12  
IL=100mA  
VIN =6V  
IL =100uA  
1
0
8
6
4
2
0
-75 -50 -25  
0
25 50 75 100 125 150  
0
1
2
3
4
5
6
7
8
TEMPERATURE (ºC)  
INPUT VOLTAGE  
Ground Current  
Quiescent Current  
Rev G  
LP2950-5ꢀ Low Dropout Linear Regulators  
© 2008 Exar Corporation  
4
  
     
600  
500  
400  
300  
170  
160  
150  
140  
130  
120  
110  
IL= 100mA  
500  
400  
300  
100  
~
~
200  
TJ = 25ºC  
100  
0
50  
0
IL= 100 µA  
110  
100µA  
1mA  
OUTPUT CURRENT  
10mA  
100mA  
-75 -50 -25  
0
25 50 75 100 125 150  
-75 -50 -25  
0
25 50 75 100 125 150  
TEMPERATURE (ºC)  
TEMPERATURE (ºC)  
Drop-Out Voltage  
Drop-Out Voltage  
Short Circuit Current  
8
6
4
2.5  
2.0  
100  
mV  
VOUT = 5V  
TA = 125ºC  
50  
mV  
0
1.5  
1.0  
TA = 25ºC  
TA = -55ºC  
CL= 1 µF  
IL= 1mA  
HYSTERESIS  
-50  
mV  
~
VOUT = 5V  
2
0
~
8V  
0.5  
0.0  
6V  
4V  
PULLUP RESISTOR TO  
SEPARATE 5V SUPPLY  
-2  
0
1
2
3
4
5
0
200  
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9  
400  
600  
800  
INPUT VOLTAGE (V)  
OUTPUT LOW VOLTAGE (V)  
TIME(µs)  
Error Comparator Output  
LP2951 Comparator Sink Current  
Line Transient Response  
10  
90  
80  
90  
80  
IO= 100 µA  
5
CL= 1µF  
VIN = 6V  
VOUT = 5V  
IO= 1mA  
2
70  
70  
60  
50  
40  
30  
20  
IL = 1mA  
IL= 0  
IO= 100mA  
1
60  
50  
40  
0.5  
0.2  
VOUT = 5V  
CL= 1 µF  
0.1  
0.05  
IL= 100 µA  
CL= 1 µF  
VIN = 6V  
VOUT = 5V  
30  
20  
0.02  
0.01  
IL = 10mA  
103  
10 2  
10 5  
106  
10 1  
10 2  
10 3  
10 4  
10 5  
10 6  
10  
100  
1K  
FREQUENCY (Hz)  
10K  
100K  
1M  
10 1  
10 4  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
Output Impedance  
Ripple Rejection  
Ripple Rejection  
© 2008 Exar Corporation  
Rev G  
LP2950-5ꢀ Low Dropout Linear Regulators  
5
  
     
20  
50  
0
2.3  
PIN 7 DRIVEN BY EXTERNAL  
SOURCE (REGULATOR RUN  
OPEN LOOP)  
10  
-50  
2.1  
0
TA=1 25ºC  
-100  
-150  
-200  
-250  
-10  
TA= 25ºC  
TA= 55ºC  
1.9  
-20  
-30  
1.7  
-75 -50 -25  
-75 -50 -25  
0
25 50 75 100 125 150  
-2.0  
-1.5 -1.0 -0.5  
0
0.5  
1.0  
0
25 50 75 100 125 150  
TEMPEATURE (ºC)  
FEEDBACK VOLTAGE (V)  
TEMPERATURE  
LP2951 Minimum Operating Voltage  
LP2951 Feedback Bias Current  
LP2951 Feedback Pin Current  
250  
200  
150  
80  
60  
40  
7
CL= 1 µF  
6
5
4
100  
50  
0
20  
0
3
-20  
2
1
0
IL = 10mA  
VIN= 8V  
CL = 10 µF  
VOUT = 5V  
-50  
-40  
CL= 1 µF  
VOUT = 5V  
-100  
-60  
CL= 10 µF  
V OUT = 5V  
~
~
~
~
100  
mA  
2
0
100  
µA  
100  
100  
µA  
µA  
-2  
0
1
2
3
4
5
-100  
0
100 200 300 400 500 600 700  
0
4
8
12  
16  
20  
TIME (ms)  
TIME (us)  
TIME (ms)  
Load Transient Response  
Load Transient Response  
Enable Transient  
120  
400  
300  
200  
120  
8-PIN  
TO-92 PACKAGE  
MOLDED  
0.25" LEADS SOLDERED  
TO PC BOARD  
DIP SOLDERED  
TO PC BOARD  
TJMAX = 125º C  
100  
80  
100  
80  
VOUT = 5V  
Vout=5V  
TJMAX = 125 ºC  
60  
60  
TA = 25ºC  
40  
TA=25 ºC  
40  
20  
0
TA = 50ºC  
100  
0
TA= 85 ºC  
20  
0
TA = 85ºC  
0
5
10  
15  
20  
25  
30  
-75 -50 -25  
0
25 50 75 100 125 150  
0
5
10  
15  
20  
25  
30  
INPUT VOLTAGE (V)  
TEMPERATURE (ºC)  
INPUT VOLTAGE (V)  
LP2950 Maxium Rated Output  
LP2951 Divider Resistance  
LP2950 Maxium Rated Output Current  
Rev G  
LP2950-5ꢀ Low Dropout Linear Regulators  
© 2008 Exar Corporation  
6
  
   
  
  
  
  
   
  µ  
  
  
  
  
  
  
  µ  
 µ  
  µ  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
   
   
  
   
    
       
 µ  
   
    
    
   
   
  
  
  
  
  
  
  
  
  
  µ  
  
  
  
  µ  
    
   
  
   
  µ  
    
    
  
    
  µ  
  
  
   
   
   
   
   
   
  
  
  
  
  
    
   
   
   
© 2008 Exar Corporation  
Rev G  
LP2950-5ꢀ Low Dropout Linear Regulators  
7
  
          
     
   
   
       µ    
          
           
     °      
            
°     Ω       
            
          
             
              
             
          
            
              
          
            
           
             
             µ   
             
    Ω           
  
            
             
    µ  µ      
            
             µ   
             
  
          
             
          
            
         µ   
  
       
             
                  
             
               
              
      
                
             µ   
            
   
   ×      
             
       µ      
 Ω               
             
               
             
µ      µ        
         
            
           
             
            
             
µ  
  
    
  
  
                
              
                
            
µ   µ      µ  µ   
             
             
      
  
  
  
  
  
 ≅   π×   
  
  µ          
  µ         
   µ  µ      
            
            
   
     
      
     
           
              
             
Rev G  
LP2950-5ꢀ Low Dropout Linear Regulators  
© 2008 Exar Corporation  
8
  
   
+V IN  
100K  
8
+V IN  
______  
ERROR  
ERROR  
5
1.2  
4
to  
2
9V  
1
OUTPUT  
V OUT  
LP2951  
+
SHUTDOWN  
INPUT  
3
R1  
3.3µF  
SD  
.01µF  
FB  
GND  
7
4
1.23V  
V REF  
R2  
     
+V  
IN  
+V  
IN  
470kΩ  
8
+V  
______  
ERROR  
IN  
5
V OUT  
1
8
V OUT  
470kΩ  
+V  
______  
ERROR  
IN  
5
ERROR  
*V  
= V  
1
IN  
OUT  
OUTPUT  
LP2951  
V OUT  
+
3
R1  
1µF  
LP2951  
SD  
FB  
GND  
4
3
SHUTDOWN  
INPUT  
RESET  
SD  
7
FB  
GND  
7
4
R2  
*MINIMUM INPUT-OUTPUT VOLTAGE RANGES FROM 40mV to 400mV.  
DEPENDING ON LOAD CURRENT. CURRENT LIMIT IS TYPICALLY 150mA  
         
Rev G  
         
© 2008 Exar Corporation  
LP2950-5ꢀ Low Dropout Linear Regulators  
9
  
    
+
6V  
SEALED  
1.5kΩ  
120kΩ  
LEAD-  
8
ACID  
1N457  
BATTERY  
SOURCE  
+VIN  
FB  
SPX385  
1
2
MAIN V+  
OUT  
V
LP2951  
MEMORY V+  
SENSE  
400kΩ  
+
FOR 5.5 V  
3
20kΩ  
1µF  
SD  
100kΩ  
GND  
4
NI-CAD  
BACKUP  
BATTERY  
      
Ω
   
  
  
  
  
    
  
  
  
  
  
  
  
  
Ω
   
  
Ω
  
  
  
  
Ω
  
  
  
  
  
Ω
  
  
  
  
  
  
  
  
Ω
  
  
Ω
   
Ω
  
  
  
  
Ω
  
  
  
              
   
  
Ω
  

        
Rev G  
LP2950-5ꢀ Low Dropout Linear Regulators  
© 2008 Exar Corporation  
ꢀ0  
  
    
+V IN  
8
ꢀ0K  
Ω.  
+V IN  
_______  
ERROR  
5
ꢀ
5 DEGREE SHUTDOWN FLAG  
ꢁ
AUX SHUTDOW  
INPUT  
.
SD  
OFF  
LP295ꢀ  
ON  
V
OUT  
GND  
FB  
EXTERNAL CIRCUIT  
PROTECTED FROM  
ꢃ
7
OR  
+
OVER TEMPERATURE  
(V+ GOES OFF WHEN  
TEMP > ꢀ25)  
TEMP  
SENSOR  
ASꢁ5  
-
RELAY  
8.2K  
Ω
       
+5V  
ꢃ.7mA  
UNREGULATED INPUT  
ꢃ
20mA  
8
OUTPUT  
8
ꢁꢁ0K  
Ω
IN  
ꢀ
+V IN  
2N5ꢃꢁ2  
VOUT  
(2)  
ꢀ
V OUT  
27K  
Ω
LP295ꢀ  
ꢀNꢃ00ꢀ  
LP295ꢀ  
2
5V  
ꢂ
7
SENSE  
0.ꢀµF  
VTAP  
FB  
2
OUTPUT  
FB  
7
GND  
+
ꢃ
ꢃ.7µF  
LOAD  
50mA  
GND  
ꢃ
ꢁꢂ0K  
Ω
TO  
ꢀNꢃ57  
ꢁ00 mA  
MIN VOLTAGE = ꢃV  
           
  
       
042408 Rev F  
LP2950-5ꢀ Low Dropout Linear Regulator  
© 2008 Exar Corporation  
ꢀꢀ  
PACKAGE: 3 PIN TO-92  
Rev G  
LP2950-5ꢀ Low Dropout Linear Regulators  
© 2008 Exar Corporation  
ꢀ2  
PACKAGE: 3 PIN TO-92 AMMO PACK  
Rev G  
LP2950-5ꢀ Low Dropout Linear Regulators  
© 2008 Exar Corporation  
ꢀ3  
PACKAGE: 8 PIN NSOIC  
© 2008 Exar Corporation  
Rev G  
LP2950-5ꢀ Low Dropout Linear Regulators  
ꢀ4  
ORDERING INFORMATION  
Output  
Voltage  
Accuracy  
Part Number  
Package Shipping Status  
Lead Free  
ꢁ Pin TO-92  
LP2950ACN-L-ꢁ-ꢁ  
0.50%  
ꢁ.ꢁV  
ꢁ.ꢁV  
Bulk  
Active  
Lead Free  
ꢁ Pin TO-92  
LP2950ACN-L-ꢁ-ꢁ/TR 0.50%  
LP2950ACN-L-5-0 0.50%  
LP2950ACN-L-5-0/TR 0.50%  
Tape & Reel Active  
Lead Free  
ꢁ Pin TO-92  
5.0V  
Bulk  
Active  
Lead Free  
ꢁ Pin TO-92  
5.0V  
Tape & Reel Active  
Lead Free  
ꢁ Pin TO-92  
LP2950CN-L-ꢁ-ꢁ  
ꢀ%  
ꢀ%  
ꢁ.ꢁV  
Bulk  
Active  
Lead Free  
ꢁ Pin TO-92  
LP2950CN-L-ꢁ-ꢁ/TR  
LP2950CN-L-5-0  
ꢁ.ꢁV  
Tape & Reel Active  
Lead Free  
ꢁ Pin TO-92  
ꢀ%  
5.0V  
Bulk  
Active  
Lead Free  
ꢁ Pin TO-92  
LP2950CN-L-5-0/TR  
LP295ꢀACS-L-ꢁ-ꢁ  
ꢀ%  
5.0V  
Tape & Reel Active  
Lead Free  
8 Pin SOIC  
0.50%  
ꢁ.ꢁV  
Bulk  
Active  
Lead Free  
8 Pin SOIC  
LP295ꢀACS-L-ꢁ-ꢁ/TR 0.50%  
LP295ꢀACS-L-5-0 0.50%  
LP295ꢀACS-L-5-0/TR 0.50%  
ꢁ.ꢁV  
Tape & Reel Active  
Lead Free  
8 Pin SOIC  
5.0V/ADJ  
5.0V/ADJ  
ꢁ.ꢁV  
Bulk  
Active  
Lead Free  
8 Pin SOIC  
Tape & Reel Active  
Lead Free  
8 Pin SOIC  
LP295ꢀCS-L-ꢁ-ꢁ  
ꢀ%  
ꢀ%  
ꢀ%  
ꢀ%  
Bulk  
Active  
Lead Free  
8 Pin SOIC  
LP295ꢀCS-L-ꢁ-ꢁ/TR  
LP295ꢀCS-L-5-0  
ꢁ.ꢁV  
Tape & Reel Active  
Lead Free  
8 Pin SOIC  
5.0V/ADJ  
5.0V/ADJ  
Bulk  
Active  
Lead Free  
8 Pin SOIC  
LP295ꢀCS-L-5-0/TR  
Tape & Reel Active  
Rev G  
LP2950-5ꢀ Low Dropout Linear Regulators  
© 2008 Exar Corporation  
ꢀ5  
ORDERING INFORMATION  
(continued)  
Output  
Voltage  
ꢁ.ꢁV  
Accuracy  
Part Number  
Package Shipping Status  
LP2950ACN-ꢁ-ꢁ  
LP2950ACN-5-0  
LP2950CN-ꢁ-ꢁ  
0.50%  
0.50%  
ꢀ%  
ꢁ Pin TO-92  
ꢁ Pin TO-92  
ꢁ Pin TO-92  
Bulk  
Bulk  
Bulk  
EOL  
EOL  
EOL  
EOL  
EOL  
EOL  
EOL  
EOL  
EOL  
EOL  
EOL  
EOL  
OBS  
OBS  
OBS  
OBS  
5.0V  
ꢁ.ꢁV  
ꢁ.ꢁV  
5.0V  
5.0V  
ꢁ.ꢁV  
LP2950CN-ꢁ-ꢁ/TR  
LP2950CN-5-0  
ꢀ%  
ꢁ Pin TO-92 Tape & Reel  
ꢁ Pin TO-92 Bulk  
ꢁ Pin TO-92 Tape & Reel  
ꢀ%  
LP2950CN-5-0/TR  
LP295ꢀACS-ꢁ-ꢁ  
LP295ꢀACS-5-0  
LP295ꢀCS-ꢁ-ꢁ  
ꢀ%  
0.50%  
0.50%  
ꢀ%  
8 Pin SOIC  
Bulk  
Bulk  
Bulk  
5.0V/ADJ 8 Pin SOIC  
ꢁ.ꢁV  
ꢁ.ꢁV  
8 Pin SOIC  
LP295ꢀCS-ꢁ-ꢁ/TR  
LP295ꢀCS-5-0  
ꢀ%  
8 Pin SOIC Tape & Reel  
Bulk  
5.0V/ADJ 8 Pin SOIC Tape & Reel  
ꢀ%  
5.0V/ADJ 8 Pin SOIC  
LP295ꢀCS-5-0/TR  
LP2950ACN-ꢁ-ꢁ/TR  
LP2950ACN-5-0/TR  
LP295ꢀACS-ꢁ-ꢁ/TR  
LP295ꢀACS-5-0/TR  
ꢀ%  
0.50%  
0.50%  
0.50%  
0.50%  
ꢁ.ꢁV  
5.0V  
ꢁ.ꢁV  
ꢁ Pin TO-92 Tape & Reel  
ꢁ Pin TO-92 Tape & Reel  
8 Pin SOIC Tape & Reel  
5.0V/ADJ 8 Pin SOIC Tape & Reel  
Exar Corporation  
Headquarters and  
Sales Office  
48720 Kato Road  
Fremont, CA 94538  
main: 510-668-7000  
fax: 510-668-7030  
EXAR Corporation reserves the right to make changes to the products contained in this publication in order  
to improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any  
circuits described herein, conveys no license under any patent or other right, and makes no representation  
that the circuits are free of patent infringement. Charts and schedules contained here in are only for  
illustration purposes and may vary depending upon a user’s specific application. While the information in this  
publication has been carefully checked; no responsibility, however, is assumed for inaccuracies.  
EXAR Corporation does not recommend the use of any of its products in life support applications where the  
failure or malfunction of the product can reasonably be expected to cause failure of the life support system or  
to significantly affect its safety or effectiveness. Products are not authorized for use in such applications  
unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or  
damage has been minimized; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation  
is adequately protected under the circumstances.  
© 2008 Exar Corporation  
Rev G  
LP2950-5ꢀ Low Dropout Linear Regulators  
ꢀ6  

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