MIC2145 Datasheet, PDF (4/15 Pages) Micrel Semiconductor – High Efficiency 2.5W Boost Converter

MIC2145
Typical Characteristics
Efficiency-Basic
Configuration
100
90
80
70
V_IN = 3.3V
60
V_OUT = 10V
L = 10µH
50
OUTPUT CURRENT (A)
16.0
15.8
15.6
15.4
15.2
15.0
14.8
14.6
14.4
14.2
14.0
2
Line Regulation
I_OUT = 10mA
L = 10µH
4 6 8 10 12 14 16
V_DD (V)
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0
Quiescent Current
vs. V_DD
2 4 6 8 10 12 14 16 18
V_DD (V)
Off Time
vs. Temperature
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5-40 _{-20 0 20 40 60 80 100}
TEMPERATURE (°C)
MIC2145
Efficiency-Bootstrapped
Configuration
100
90
80
70
V_IN = 3.3V
60
V_OUT = 10V
L = 10µH
50
OUTPUT CURRENT (A)
Switch On-Resistance
1.0
vs. V_DD
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0 2 4 6 8 10 12 14 16 18
V_DD (V)
Feedback Voltage
vs. Temperature
1.1
1.09
1.08
1.07
1.06
1.05-40 _{-20 0 20 40 60 80 100}
TEMPERATURE (°C)
Shutdown Current
vs. Temperature
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
4
Micrel
Load Regulation
10.2
10.0
9.8
9.6
9.4
V_IN = 3.6V
L = 10µH
9.2
OUTPUT CURRENT (A)
Switch On-Resistance
vs. Temperature
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0-40 _{-20 0 20 40 60 80 100}
TEMPERATURE (°C)
Feedback Current
vs. Temperature
0.10
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0.00-40 _{-20 0 20 40 60 80 100}
TEMPERATURE (°C)
Quiescent Current
vs. Temperature
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
V_IN = 3.6V
0.00
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
May 2003