MIC2950 Datasheet, PDF (9/14 Pages) Micrel Semiconductor – 150mA Low-Dropout Voltage Regulator

MIC2950/2951
Micrel
Ripple Rejection
80
I_L = 50 µA
70
60
I_L = 100 mA
50
40
C_L = 1.5 µF
30 ^VIN ^{= 6V}
V_OUT = 5V
20
10
10¹
10² 10³ 10⁴ 10⁵ 10⁶
FREQUENCY (Hz)
Output Noise
3.5
I_L = 100 mA
3.0
2.5
C_L = 220 µF
C_L = 4.7 µF
2.0
1.5
C_L =
3.3 µF
1.0
0.5
0.01 µF
BYPASS
PIN 1 TO
0.0 ^{PIN 7}
10²
10³
10⁴
10⁵
FREQUENCY (Hz)
MIC2951 Divider Resistance
400
300
200
100
0
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (°C)
MIC2951 Maximum
Shutdown Threshold Voltage
Line Regulation
Rated Output Current
1.8
30
150
1.6
25
20
I_L = 100 µA
140
8-PIN SOIC
SOLDERED
TO PC BOARD
1.4
1.2
15
130
10 ^{TJ = 150°C}
5
I_L = 1 mA
120
0
100
T_{J MAX} = 125°C
V_OUT = 5V
T_A = 25°C
3
80
1.0
0.8
0.6
-75 -50 -25 0 25 50 75 100 125 150
10
5 ^TJ ^{= 125°C}
0
-5
-10
5
10 15
I_L = 100 µA
20 25 30
60 T_A = 50°C
40
20
T_A = 85°C
0
0 5 10 15 20 25 30
TEMPERATURE (°C)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
MIC2950 Maximum
Rated Output
150
140
130
TO-92 PACKAGE
.25" LEADS SOLDERED
TO PC BOARD
120
100
T_{J MAX} = 125°C
80
T_A = 25°C
60
40
T = 85°C
20
A
0
0 5 10 15 20 25 30
INPUT VOLTAGE (V)
Thermal Response
5
4
2
0
-2
1
1.25W
0
-1
0 10 20 30 40 50
TIME (µS)
Fold-Back Current Limiting
600
500
400
300
200
100
01 2345
OUTPUT VOLTAGE (V)
February 1999
3-57