AMG-LL9910B Datasheet, PDF (11/15 Pages) alpha microelectronics gmbh – Universal High Voltage Single Channel LED Driver

AMG-LL9910B
Universal High Voltage Single Channel LED Driver
9.3. Off Line LED Driver
10mH
325V DC
Enable
4,7 µF
22µF / 400V
UF4007
Vin
Vdd
82k
LD ^AMG
LL9910B
PWMD
Gate
3k
Rosc
CS
GND
220k
350mA
e.g.. IRFxxx
0,7R
Figure4: Buck topology, linear dimming, enable switch
9.4. Off Line LED Driver with Digital I/F
10mH
325V DC
22µF / 400V
UF4007
Enable
PWM in
4,7 µF
Vin
Vdd
LD ^AMG
LL9910B
PWMD
Gate
10k
Rosc
CS
GND
220k
350mA
e.g. IRFxxx
0,7R
Figure 5: Buck topology, digital dimming, enable signal
AMG-LL9910B Revision: B
09/13/12
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