Micrel, Inc.
MIC2810
Typical Characteristics
―
DC/DC Normal Mode (/LOWQ = VIN)
1.2V
OUT
Efficiency
90
80
70
60
50
40
30
20
10
0
100 200 300 400 500 600
OUTPUT CURRENT (mA)
V
IN
=3V
V
IN
=3.6V
V
IN
=4.2V
2.4
2.3
2.2
2.1
2.0
1.9
1.8
L = 2.2µH
C
OUT
= 2.2µF
I
OUT
= 300mA
/LowQ = V
IN
Switching Frequency
vs. Input Voltage
1.7
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
INPUT CURRENT (V)
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
V
IN
= 3.6V
1.5
I
OUT
= 400mA
1.4
/LowQ = V
IN
1.3
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Switching Frequency
vs. Temperature
Load Regulation
1.22
1.200
Line Regulation
1.8
1.6
Current Limit
vs. Input Voltage
1.21
1.198
1.4
1.2
1.0
L = 2.2µH
C
OUT
= 2.2µF
I
OUT
= 300mA
/LowQ = V
IN
0.8
0.6
/LowQ = V
IN
0.4
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
INPUT VOLTAGE (V)
1.20
L = 2.2µH
C
OUT
= 2.2µF
V
IN
= 3.6V
/LowQ = V
IN
100 200 300 400 500 600
OUTPUT CURRENT (mA)
1.196
1.19
1.194
1.18
0
1.192
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
INPUT VOLTAGE (V)
February 2008
7
M9999-022008-C
MICREL [ MICREL SEMICONDUCTOR ]
