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| SM8303 Datasheet, PDF (7/11 Pages) SamHop Microelectronics Corp. – 150KHz, 3A PWM Buck Switching Regulator | |||
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SAMHOP Microelectronics Corp.
150KHz, 3A PWM Buck Switching Regulator
Typical Application Circuit
ï¼Aï¼ Fixed Type Circuit
SM8303
12V
DC Input
Cin
Capacitor
FB
1
Vin
4
SM8303 2
Output
L1
Inductor
5
3
SD
Gnd
D1
Schottky Diode
3.3V/3A
Output Load
Co
Capacitor
(B) Adjustable Type Circuit
12V
DC Input
Cin
680uF
R2
R1
FB
1
Vin
4
SM8303
2
5
3
Output
SD
Gnd
L1
68uF
D1
1N5824
3.3V/3A
Output Load
Co
1000 uF
Vout = VFB x (1+ R1/R2 ) VFB=1.23V
7
V1.0 May 17 ,2007
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