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UC3550 Datasheet(PDF) 6 Page - Unisonic Technologies

Part # UC3550
Description  PWM CONTROLLED,PWM/PFM SWITCHABLE STEP-UP DC-DC CONTROLLER
Download  10 Pages
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Manufacturer  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC3550 Datasheet(HTML) 6 Page - Unisonic Technologies

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UC3550
CMOS IC
UNISONICTECHNOLOGIESCO.,LTD
6 of 10
www.unisonic.com.tw
QW-R502-082,B
TYPICAL STEP-UP CONVERTER APPLICATION
CE
OUT
NC
EXT
GND
VOUT
VIN
1
2
34
5
UTC
UC3550
10uF
220uF
Step-up Converter using external MOSFET
10uH
CE
OUT
NC
EXT
GND
VOUT
VIN
1
2
34
5
UTC
UC3550
Cb 3000P
Rb 560
10uF
220uF
Step-up Converter using external NPN
10uH
0.1µ
0.1µ
Recommended components
Nmos tR :XP161A0390PR/ (Torex) or NTGS3446T1(ON SEMI)
L
10Uh(Sunida CD54 fosc=300kHz)
SD
MA737, or MBRM110L
CIN
10V 10uF (tantalum)
CL
16V220uF (tantalum)
NPN tR type
tR
2SD1628(Sanyo),MMJT9410
Rb
500~1000Ω(Adjust according to load and Tr. hFE levels)
Cb
3000p(ceramic type)


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