MIC2142_07 Datasheet, PDF (4/17 Pages) Micrel Semiconductor – Micropower Boost Converter

Micrel, Inc.
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 = 22 H
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
October 2007
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
MIC2142
Line Regulation
16.5
I = 7mA
L
16 ^{L = 22 H}
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)
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)
M9999-102507