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VIN
Trance1:1
Diode
OUT
Vss
V
OUT
+
Capacitor
Lx
RH5RH
××1A
Starter Circuit
(Note) Use a RH5RH××2B,depend on the Output Current.
FIG. 8
ZDST
RST
Tr
V
OUT side
V
OUT side
V
IN side
V
IN side
Starter Circuit
Starter Circuit
ZDst 2.5V≤/ZDst≤Designation of Output Voltage
Rst Input Bias Current of ZDst and Tr.
(several kΩ to several hundreds kΩ)
• Step-up/Step-down Circuit with Flyback
*
The Starter Circuit is necessary for all above circuits.
1.for Step-up Circuit.
2.for Step-down and Step-up/Step-down Circuit.
RH5RH