MIC2605_09 Datasheet, PDF (5/14 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
1.0
468
MIC2605
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
46
81 01 21 41 61 82 0
INPUT VOLTAGE (V)
Line Regulation
33.4
33.3
33.2
33.1
33.0
32.9
32.8
468
Load = 40mA
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)
September 2009
Quiescent Current
vs. Input Voltage
7
6
5
4
3
2
1
0
13579
No Switching FB Pin @ 2V
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
70
60
50
40
30
20
10
0
48
12V_IN
4.5V_IN
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)
5
MIC2605/6
Max Duty Cycle
vs. Input Voltage
97
96
95
94
93
92
91
9046
EN = V_IN
81 01 21 41 61 82 0
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
0.6046
EN = V_IN
81 01 21 41 61 82 0
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)
M9999-090909-B