LTC3873-5 Datasheet, PDF (12/16 Pages) Linear Technology – No RSENSETM Constant Frequency Current Mode Boost/Flyback/SEPIC DC/DC Controller

LTC3873-5
TYPICAL APPLICATIONS
1W Isolated Housekeeping Telecom Converter
PRIMARY SIDE
10V, 100mA
OUTPUT
V_IN
36V TO 75V
221k
8.2V
8.8k ^BAS516
1nF
22k
10nF
1.2k
LTC3873-5
I_TH
NGATE
GND
V_CC
RUN/SS
V_FB
SW
IPRG
BAS516
T1
•
2.2μF
1μF
BAS516
•
100Ω
•
FDC2512
2.2μF
SECONDARY SIDE
10V, 100mA
OUTPUT
SECONDARY
SIDE GROUND
T1: PULSE ENGINEERING PA0648
OR TYCO TTI8698
10μF 0.1Ω
PRIMARY GROUND
38735 TA04
9V to 15V V_IN, 12V V_OUT SEPIC Converter
V_IN
9V TO 15V
10μF ⁺
s3
T1
4.56μH
BH510-1009
BH ELECTRONICS
1
4
••
100μF
20V ₂
3
10μF
25V
UPS840
301Ω
10nF
33.2k
100k
LTC3873-5
1
I_PRG
8
SW
2
7
I_TH RUN/SS
3
6
V_FB = 1.2V V_CC
4
5
11k
GND NGATE
Si4840
4.7μF
0.1μF
+ 47μF
16V
s3
3873-5 TA04
V_OUT
12V
2A
10μF
16V
38735fb
12