AMG-LL9910B Datasheet, PDF (12/15 Pages) alpha microelectronics gmbh – Universal High Voltage Single Channel LED Driver

AMG-LL9910B
Universal High Voltage Single Channel LED Driver
9.5. Off Line LED Driver with Temp-Protection
10mH
325V DC
Thermally
connect
to LEDs
4,7 µF
22µF / 400V
UF4007
33k
1k NTC
ϑ
Vin
Vdd
LD ^AMG
LL9910B
PWMD
Gate
Rosc
CS
GND
220k
350mA
e.g. IRFxxx
0,7R
Figure 6: Buck topology, with Temp-Protection
9.6. Battery Powered LED Driver
12V DC
4,7 µF
47µF / 16V
Vin
Vdd
LD ^AMG
LL9910B
PWMD
Gate
Rosc
CS
GND
100k
1mH
UF4004
10µF / 60V
e.g. IRFxxx
0,3R
350mA
Figure 7: Boost topology
AMG-LL9910B Revision: B
09/13/12
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