US1651 Datasheet, PDF (7/7 Pages) Unisonic Technologies – PRIMARY-SIDE REGULATION PWM POWER SWITCH

US1651
Preliminary
 TYPICAL APPLICATION CIRCUIT (9V/0.5A)
CMOS IC
F1
L
N
3
BD1 ₄
1 ^L1
2 _C1
R1
R2
C2
D4
R3
Is
T1
Vo
R4
C4
Np
D3 ^R8
Ns ^C6
Io
D2
Vo
C5
R9
R5
C3
D1
V_DD
V_DDG DRAIN
UTC
INV ^US1651 CS
Na
CY1
R6
GND
R7
BOM
Reference
BD1
L1
C1,C2
C3
C4
C5
C6
D1, D2, D4
D3
R1
Component
BD 1A/600V
1mH 6x8mm
EC 4.7μF 400V 105°C
EC 4.7μF 50V 105°C
CC 1n F 1000V 1206
CC 0.33μF 50V 0805
EC 560μF 10V 105°C
Diode UTC 1N4007
Diode UTC SB360
R 2.4KΩ 1206 ±5%
Reference
R2,R3
R4
R5
R6
R7
R8
R9
T1
F1
CY1
Component
R 1.5MΩ 1206 ±5%
R 200KΩ 1206 ±5%
R 47KΩ 0805 ±1%
R 3KΩ 0805 ±1%
R 3Ω 1206 ±5%
R 2.4KΩ 1206 ±5%
R 470Ω 0805 ±5%
EE-16
FUSE 1A 250VAC
Y/C 1000p F 250V
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R129-005.a