參數(shù)資料
型號: RH5RI302B-T1
廠商: RICOH COMPANY LTD
元件分類: 穩(wěn)壓器
英文描述: VFM STEP-UP DC/DC CONVERTER
中文描述: 0.05 A SWITCHING CONTROLLER, 120 kHz SWITCHING FREQ-MAX, PSSO3
封裝: SOT-89, 3 PIN
文件頁數(shù): 22/24頁
文件大?。?/td> 179K
代理商: RH5RI302B-T1
RH5RI
21
V
IN
Inductor
Diode
OUT
Vss
V
OUT
+
Capacitor
EXT
ZD:6.8V
RH5RI502B
Tr
Cb
R
ZD
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
V
IN
Inductor
Diode
RH5RI
××
1B
OUT
Vss
V
OUT
+
Capacitor
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 RH5RI
××
2B and drive the PNP Tr. by the external NPN Tr.
FIG. 7
APPLICATION CIRCUITS
12V Step-up Circuit
Step-down Circuit
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