Description
1 Converter High Power Factor LED Driver ICs LC5581AS/LS Data Sheet .
Package
The LC5581AS and LC5581LS are quasi-resonant LED driver ICs.
Features
* the ICs can provide more costeffective power supply systems with fewer external components. Features
* 800 V High Voltage Built-in Startup Circuit
* Analog Dimming Function
* High Power Factor by Average Current Control
* Soft Start Function
* Shorter Time from Startup to LED Li
Applications
* LED Lighting Equipment
* LED Bulbs
Typical Application F1
VAC
C1
C3 Q1
L1
D1
D2 L2
D3 D4 C2
Dimming Signal
U1
1
16
ISENSE
VREF
C7
NC
COMP OCP
VCC
GND
ST
8
DRV
9
LC5581AS /L S
C6
C5
R5 C8
D9
C11 T1
D10
P
C10
S
D5 C4
R1 D D6
R4
D7 C9
R3
VOUT
LED
R9
R10
DZ