contact-fact Micrel Semiconductor, contact-fact Datasheet - Page 8

• Manufacturer Part Number: contact-fact
• Description: Mic2950/mic2951 150ma Low-dropout Voltage Regulator
• Manufacturer: Micrel Semiconductor

MIC2950/2951
MIC2950/2951
0.05
0.02
0.01
125
100
100
100
mA
-25
-50
0.5
0.2
0.1
2.2
2.1
2.0
1.9
1.8
1.7
1.6
µA
10
75
50
25
-2
5
2
1
8
6
4
2
0
0
-75 -50 -25 0 25 50 75 100 125 150
10
0
Minimum Operating Voltage
I = 1 mA
0
Error Comparator Output
0
I = 100 µA
Load Transient Response
0
100
1
SEPARATE 5V SUPPLY
INPUT VOLTAGE (V)
Output Impedance
TEMPERATURE (°C)
FREQUENCY (Hz)
2
HYSTERESIS
2
1K
TIME (mS)
MIC2951
MIC2951
V
OUT
4
3
C = 4.7µ
V
10K 100K 1M
= 5V
OUT
L
I = 100 mA
C = 4.7µF
= 5V
6
0
4
OUT
L
8
5
10
6
100
-10
-20
-30
mA
100
2.5
2.0
1.5
1.0
0.5
0.0
-20
-40
-60
µA
20
10
90
80
70
60
50
40
30
20
80
60
40
20
0
0
-75 -50 -25 0 25 50 75 100 125 150
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
10
1
C = 1.5 µ
V
0
OUTPUT LOW VOLTAGE (V)
IN
OUT
Load Transient Response
L
Comparator Sink Current
Feedback Bias Current
10
= 5V
TEMPERATURE (°C)
Ripple Rejection
2
4
FREQUENCY (Hz)
8
MIC2951
MIC2951
TIME (mS)
10
8
3
I = 0
L
10
C = 15 µ
V
12
I = 100 µA
T = 25°C
T = -55°C
T = 125°C
L
OUT
L
A
A
A
4
= 5V
10
16
20
10
6
-100
-150
-200
-250
200
400
mV
mV
mV
-50
-50
8V
6V
4V
50
90
80
70
60
50
40
30
20
-2
0
7
6
5
4
3
2
1
0
2
0
0
-2.0 -1.5 -1.0 -0.5
-100 0 100 200 300 400 500 600 700
10
T = 125°C
1
I = 1 mA
L
OPEN LOOP)
A
0
Line Transient Response
Feedback Pin Current
FEEDBACK VOLTAGE (V)
10
FREQUENCY (Hz)
Enable Transient
Ripple Rejection
2
T = –55°C
C = 10 µF
200
A
I = 10 mA
L
L
MIC2951
TIME (µS)
MIC2951
C = 1.5 µF
10
TIME (mS)
T = 25°C
L
A
3
400
C = 1.5 µ
V
10
C = 4.7µ
V
IN
OUT
0
L
L
V
OUT
4
L
L
IN
OUT
= 5V
600
= 5V
0.5 1.0
= 5V
10
5
800
Micrel, Inc.
10
July 2005
6