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24
RH5RH
V
IN
Inductor
Diode
Lx
EXT
OUT
Vss
V
OUT
+
Capacitor
CE
NC
Components Inductor (L)
: 120μH (Sumida Electric Co., Ltd.)
: MA721 (Matsushita Electronics Corporation, Schottky Type)
: 22μF (Tantalum Type)
Diode (D)
Capacitor (C
L
)
FIG. 3
V
IN
Inductor
Diode
Lx
EXT
OUT
Vss
V
OUT
+
Capacitor
Cb
Rb
Tr
CE
NC
Components Inductor (L)
: 28μH (Troidal Core)
: HRP22 (Hitachi, Schottky Type)
: 100μF (Tantalum Type)
: 2SD1628G
: 300
: 0.01μF
Diode (D)
Capacitor (C
L
)
Transistor (Tr)
Base Resistor (Rb)
Base Capacitor (Cb)
FIG. 4
RH5RH
××
3B