MIC2205 Micrel Semiconductor, MIC2205 Datasheet - Page 7

• Manufacturer Part Number: MIC2205
• Description: 2MHz PWM Synchronous Buck Regulator
• Manufacturer: Micrel Semiconductor

Typical Characteristics - LDO Mode
Micrel, Inc.
April 2005
140
120
100
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
80
60
40
20
80
60
40
20
40
35
30
25
20
15
10
1E-2 1E-1 1E+0 1E+1 1E+2 1E+3
0
0
5
0
Enable Threshold Voltage
0.01 0.1
-40 -20 0 20 40 60 80 100 120
2.7
2.7
I
V
C
OUT
OUT
OUT
vs. Supply Voltage
vs. Supply Voltage
SUPPLY VOLTAGE (V)
Dropout Voltage
vs. Temperature
SUPPLY VOLTAGE (V)
= 50mA
vs. Input Voltage
TEMPERATURE (°C)
= 1.8V
= 2.2 F
Current Limit
3.4
3.4
FREQUENCY (Hz)
1
PSRR
4.1
4.1
4.2V
3.6V
10
V
I
LowQ = 0V
LowQ = 0V
OUT
LowQ = 0V
OUT
3V
4.8
4.8
100
= 10mA
= 3.3V
1k
5.5
5.5
160
140
120
100
100
80
60
40
20
80
60
40
20
90
80
70
60
50
40
30
20
10
1E-2 1E-1 1E+0 1E+1 1E+2 1E+3
0
0
9
8
7
6
5
4
3
2
1
0
0
0.01 0.1
-40 -20 0 20 40 60 80 100 120
-40 -20 0 20 40 60 80 100 120
2.7
V
V
C
IN
OUT
OUT
vs. Supply Voltage
= 3.6
Dropout Voltage
vs. Temperature
Dropout Voltage
vs. Temperature
SUPPLY VOLTAGE (V)
vs. Output Current
TEMPERATURE (°C)
TEMPERATURE (°C)
= 1.8V
Turn-On Time
= 2.2 F
3.4
FREQUENCY (Hz)
I
OUT
1
PSRR
7
= 100 A
4.1
I
OUT
10
V
I
LowQ = 0V
V
I
LowQ = 0V
OUT
OUT
OUT
OUT
V
LowQ = 0V
= 50mA
I
OUT
IN
4.8
100
= 50mA
= 1mA
= 3.6V
= 3.3V
= 3.3V
= 0A
1k
5.5
1.836
1.827
1.818
1.809
1.800
1.791
1.782
1.773
1.764
250
200
150
100
50
80
70
60
50
40
30
20
10
25
20
15
10
0
0
5
0
-40 -20 0 20 40 60 80 100 120
-40 -20 0 20 40 60 80 100 120
-40 -20 0
0
I
OUT
I
OUT
Quiescent Current
vs. Output Current
OUTPUT CURRENT (mA)
vs. Temperature
Dropout Voltage
vs. Temperature
vs. Temperature
20
Output Voltage
= 50mA
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
= 100 A
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Dropout
20 40 60 80 100 120
40
www.micrel.com
V
60
M9999-041105
V
I
LowQ = 0V
LowQ = 0V
OUT
I
OUT
OUT
OUT
V
LowQ = 0V
IN
= 3.3V
= 25mA
= 1mA
= 3.6V
= 3.3V
MIC2205
80
100