MIC2954
Micrel
Typical Characteristics
GROUND PIN CURRENT (µA)
180
160
140
120
100
80
60
40
20
0
0
1
2
3
4
5
6
7
8
I L = 1mA
Ground Pin Current
GROUND PIN CURRENT (µA)
400
Ground Pin Current
GROUND PIN CURRENT (mA)
100
Ground Pin Current vs Load
300
10
200
I L = 1mA
100
1
0.1
0.01
0.1
0
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (°C)
1
10
100
1000
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
GROUND PIN CURRENT (mA)
20
18
16
14
12
10
8
6
4
2
0
Ground Pin Current
GROUND PIN CURRENT (mA)
25
Ground Pin Current
NOISE VOLTAGE (µVrms)
500
400
300
200
100
Output Noise Voltage
CL = 2.2 µF
20
15
10
5
I L = 250mA
I L = 250 mA
CL = 33 µF
I L = 100 mA
V IN =6V
V OUT =5V
1
10
100
1000
0
1
2
3
4
5
6
7
8
0
-75 -50 -25 0 25 50 75 100125 150
JUNCTION TEMPERATURE (°C)
0
0.1
INPUT VOLTAGE (V)
LOAD CURRENT (mA)
100
Ripple Rejection
RIPPLE REJECTION (dB)
90
80
70
60
50
40
30
20
Ripple Rejection
I L = 100 mA
100
Ripple Rejection
RIPPLE REJECTION (dB)
80
70
60
50
40
30
V IN =6V
V OUT =5V
CL=2.2µF
0.1
1
10
I L =1 mA
RIPPLE REJECTION (dB)
90
90
80
70
60
50
40
30
V IN =6V
V OUT =5V
CL=2.2µF
0.1
1
I L = 100 µA
IL=0
I L = 250mA
V IN =6V
V OUT =5V
CL=10µF
0.1
1
10
100
1000
20
0.01
I L =10mA
100
1000
10
0.01
20
0.01
10
100
1000
FREQUENCY (kHz)
FREQUENCY (kHz)
FREQUENCY (kHz)
Line Transient Response
INPUT OUTPUT VOLTAGE
VOLTAGE
CHANGE (mV)
400
0
-400
8V
6V
0
0.2
0.4
0.6
0.8
1
CL=2.2µF
I L=10mA
V OUT =5V
Line Transient Response
INPUT OUTPUT VOLTAGE
VOLTAGE
CHANGE (mV)
OUTPUT IMPEDANCE (
Ω
)
80
40
0
-40
8V
6V
0
1
2
3
4
5
CL=33µF
I L=10mA
V OUT =5V
100
10
1
Output Impedance
I L=100µA
V IN =6V
V OUT =5V
CL=10µF
0.1
I L=10µA
I L=250mA
0.01
0.01
0.1
1
10
100 1000
TIME (mS)
TIME (mS)
FREQUENCY (kHz)
MIC2954
6
August 1999
MICREL [ MICREL SEMICONDUCTOR ]
