LP2950 Datasheet, PDF (6/16 Pages) National Semiconductor (TI) – Series of Adjustable Micropower Voltage Regulators

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   
2.3
20
10
50
PIN 7 DRIVEN BY EXTERNAL
SOURCE (REGULATOR RUN
0
OPEN LOOP)
2.1
-50
0
TA=1 25ºC
-100
-10
1.9
-150 ^TA^{= 25ºC}
-20
-200
T_A= 55ºC
1.7
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE
LP2951 Minimum Operating Voltage
-30
-75 -50 -25 0 25 50 75 100 125 150
TEMPEATURE (ºC)
LP2951 Feedback Bias Current
-250
-2.0 -1.5 -1.0 -0.5 0 0.5 1.0
FEEDBACK VOLTAGE (V)
LP2951 Feedback Pin Current
250
200
150
100
50
0
-50
-100
~~
100
mA
100
µA
0
C_L= 1 µF
V_OUT = 5V
1 23
TIME (ms)
45
Load Transient Response
80
60
40
20
0
-20
-40
-60
~~
100
µA
100
µA
0
C_L = 10 µF
V_OUT = 5V
4 8 12 16 20
TIME (ms)
7
6
C_L= 1 µF
5
4
3
2
I_L = 10mA
1
V_IN= 8V
0
C_L= 10 µF V _OUT = 5V
2
0
-2
-100 0 100 200 300 400 500 600 700
TIME (us)
Load Transient Response
Enable Transient
120
TO-92 PACKAGE
100
0.25" LEADS SOLDERED
TO PC BOARD
80
Vout=5V
60
T_JMAX = 125 ºC
40
20 ^TA^{= 85 ºC}
T_A=25 ºC
0
0 5 10 15 20 25 30
INPUT VOLTAGE (V)
LP2950 Maxium Rated Output
400
120
8-PIN
MOLDED
100
DIP SOLDERED
300
TO PC BOARD
80
T_JMAX = 125º C
V_OUT = 5V
200
60
T_A = 25ºC
40 _{TA = 50ºC}
100
20
T_A = 85ºC
0
0
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (ºC)
LP2951 Divider Resistance
0 5 10 15 20 25 30
INPUT VOLTAGE (V)
LP2950 Maxium Rated Output Current
Rev G
LP2950-5 Low Dropout Linear Regulators
6
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