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RH5RH552B-T1 数据表(PDF) 27 Page - RICOH electronics devices division

部件名 RH5RH552B-T1
功能描述  PWM STEP-UP DC/DC CONVERTER
PDF  29 Pages
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制造商  RICOH [RICOH electronics devices division]
网页  http://www.ricoh.com
标志 RICOH - RICOH electronics devices division

RH5RH552B-T1 数据表(HTML) 27 Page - RICOH electronics devices division

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26
VIN
Inductor
Diode
OUT
Vss
VOUT
+
Capacitor
EXT
ZD:6.8V
RH5RH502B
Tr
Cb
RZD
Rb
Starter Circuit
(Note) When the Output Current is small or the Output Voltage is unstable,use the Rzd for flowing the bias current through the Zener diode ZD.
FIG. 6
VIN
Inductor
Diode
OUT
Vss
VOUT
+
Capacitor
RH5RH
××1A
Tr
PNP
Lx
Rb1
Rb2
Starter Circuit
(Note) When the LX pin Voltage is over the rating at the time PNP Tr is OFF,use a RH5RH
××2B and drive the PNP Tr. by the external NPN Tr.
FIG. 7
APPLICATION CIRCUITS
• 12V Step-up Circuit
RH5RH
• Step-down Circuit



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