MIC2145_05 Datasheet, PDF (14/15 Pages) Micrel Semiconductor – High Efficiency 2.5W Boost Converter

MIC2145
Micrel, Inc.
V_IN
3.0V-5.0V
C1
10µF/6.3V
Murata
GRM42-6 X5R 106K 6.3 _JP1
R1 R2
100k 10k
L1
10µH
Sumida
CR32-100
PGND
SW
EN
VDD
MIC2145
RSET
FB
SS
C2
0.01µF
SGND
D1
On Semiconductor
MBR0530T1
R4
C3
1M _100pF
R3
78.7k
V_OUT
15.0V
LED1 LED2 LED3 LED4
C4
10µF/16V
R
Murata
GRM42-2 X5R 106K 16
V_IN V_OUT Load Ripple Voltage Efficiency
V V mA mV(peak-peak)
%
3.6 15.0 40
<100
85
15V Output
Efficiency
90
85
80
75
70
65
V_IN = 3.6V
601
10
100
OUTPUT CURRENT (mA)
Figure 10. Series White LED Driver Application
M9999-042205
14
April 2005