MIC2142 Datasheet, PDF (10/17 Pages) Micrel Semiconductor – Micropower Boost Converter

MIC2142
L1
10µH
CR3
MBR0530
V_IN
+5.0V @50mA
U1 MIC2142
4 ^{FB SW} 3
C2
GND ₂
C1
10µF
1µF
EN
5 ^{EN VCC} 1
25V
GND
CR1
LWT673
CR2
LWT673
CR3
LWT673
R1
120Ω
R2
120Ω
R3
120Ω
GND
DAC
R4
R3
Figure 5. Parallel White LED Driver with Analog Dimming Control
Micrel
V_IN
C2
10µF
L1
10µH
CR1
BAT54HT1
+20V @0.5mA
U1 MIC2142
4 ^{FB SW} 3
GND ₂
5 ^{EN VCC} 1
R2
1.8M
C1
1µF
25V
R1
120k
C1
1µF
25V
V_INRTN
GND
Figure 6. Handheld LCD Supply
MIC2142
10
December 2000