MIC2605 Datasheet, PDF (4/13 Pages) Micrel Semiconductor – 0.5A, 1.2MHz / 2MHz Wide Input Range Boost Regulator with Integrated Switch and Schottky Diode

Micrel, Inc.
Typical Characteristics
Frequency
vs. Input Voltage
2.0
MIC2606
1.8
1.6
1.4
1.2
MIC2605
1.0
4 6 8 10 12 14 16 18
INPUT VOLTAGE (V)
Switch Saturation Voltage
1100
1000
900
800
vs. Input Voltage
–50mA –0.1A –0.15A –0.2A
–0.25A –0.3A –0.35A –0.4A
–0.45A –0.5A –0.55A –0.6A
–0.65A –0.7A –0.75A –0.8A
–0.85A
700
600
500
400
300
200
100
0
4 6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
Line Regulation
33.4
33.3
33.2
33.1
33.0
32.9
32.8
4
Load = 40mA
6 8 10 12 14 16 18
INPUT VOLTAGE (V)
1.266
Feedback Voltage
vs. Temperature
1.264
1.262
1.260
1.258
1.256
1.254
1.252
V_{IN = 12V}
Load = 100mA
1.25-040 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
August 2008
Quiescent Current
vs. Input Voltage
7
6
5
4
3
2
1
No Switching FB Pin @ 2V
0
1 3 5 7 9 11 13 15 17 19
INPUT VOLTAGE (V)
Switch Saturation Voltage
vs. Switch Current
1100
–4.5V –5V –6V –7V –8V –9V
1000 –10V –11V –12V –15V –20
900
800
700
600
500
400
300
200
100
0
SWITCH CURRENT (mA)
32V_OUT Efficiency
90
80
12V_IN
70
60
4.5V_IN
50
40
30
20
10
0
4 8 12 16 20 24 28 32 36 40
LOAD CURRENT (mA)
Switch Current Limit
vs. Temperature
1.00
0.95
0.90
0.85
0.80
0.75
V_{IN = 12V}
0.7-040 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
4
MIC2605/6
Max Duty Cycle
vs. Input Voltage
97
96
95
94
93
92
91
904
6
EN = V_IN
8 10 12 14 16 18 20
INPUT VOLTAGE (V)
Switch Current Limit
vs. Input Voltage
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.604
EN = V_IN
6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
32V_OUT Efficiency
90
80
70
60
50
40
30
20
10
V_{IN = 12V}
020 _{40 60 80 100 120}
LOAD CURRENT (mA)
1000
V_SAT
vs. Temperature
I_SW=750mA
I_SW=400mA
100
I_SW=100mA
1-040 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
M9999-080108-B