MIC2142 Datasheet, PDF (4/17 Pages) Micrel Semiconductor – Micropower Boost Converter

MIC2142
Typical Characteristics
Quiescent Current
vs. Input Voltage
350
300 ^{VOUT = 5V}
250
200
150
100
50
00 _{2 4 6 8 10 12 14 16}
INPUT VOLTAGE (V)
1200
1000
800
Output Ripple
vs. Input Voltage
I_L = 7mA
L = 22µH
600
V_OUT = 15V
400
I_L = 2mA
L = 220µH
200
00 _{2 4 6 8 10 12 14}
INPUT VOLTAGE (V)
Oscillator Characteristics
vs. Input Voltage
350
0.65
300
Frequency
0.60
250
200
0.55
150
Duty Cycle
0.50
100 _{VO = 15V}
50 ^IO ^{= 100µA}
L= 220µH
00 _{2 4 6 8 10 12}
INPUT VOLTAGE (V)
0.45
140.40
t_ON vs.
2
Temperature
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
-150 -30 -10 10 30 50 70 90 110
TEMPERATURE (°C)
MIC2142
VDS and R_DS(ON)
600
vs. Input Voltage
6
500
5
400
4
300
3
200
2
100
00
1
I_SW = 100mA
2 4 6 8 10 12 140
INPUT VOLTAGE (V)
Efficiency
vs. Input Voltage
85
80
I_L = 2mA
75
I_L = 7mA
L = 220µH
L = 22µH
70
65 _{VOUT = 15V}
602 _{4 6 8 10 12 14}
INPUT VOLTAGE (V)
Quiescent Current
vs. Temperature
84
82
80
78
76
74
72
V_IN = 3.6V
7-050 _{-30 -10 10 30 50 70 90 110}
TEMPERATURE (°C)
Frequency vs.
Temperature
340
335
330
325
320
315
310
305
300
29-550 _{-30 -10 10 30 50 70 90 110}
TEMPERATURE (°C)
4
Micrel
Line Regulation
16.5
I = 7mA
L
16 ^{L = 22µH}
15.5
I_L = 2mA
L = 220µH
15
14.5
142 _{4 6 8 10 12 14}
INPUT VOLTAGE (V)
MIC2142 Load
Regulation
16
14
V_OUT
12
10
L = 22µH
8 V_IN = 5V
6
4
2
V_REF
00 _{5 10 15 20 25 30}
OUTPUT CURRENT (mA)
V_OUT and V_REF
15.20 ^{Over Temperature}
V_IN = 3.6V
15.15 ^I_O ^{= 100µA}
L = 22µH
15.10
1.290
1.285
15.05
1.280
15.00 ^VOUT
14.95
V_REF
1.275
14.9-050 _{-30 -10 10 30 50 70 90 1110.270}
TEMPERATURE (°C)
Timing Characteristics
Over Temperature
3.5
3.0 _{T (µsec)}
2.5
2.0
1.5 _{tON (µsec)}
1.0
0.5
Duty Cycle
-050 -30 -10 10 30 50 70 90 110
TEMPERATURE (°C)
December 2000