LX1992
High Efficiency LED Driver
L I N F I N I T Y D I V I S I O N
PRODUCTION
APPLICATION CIRCUITS
Typical LED Driver Applications
L1
VBAT = 1.6V to 6.0V
47µH
1206 Case Size
C1
4.7µF
DRV
SRC
IN
SHDN
ON OFF
LX1992
FB
CS
ADJ
GND
RCS
4kΩ
VF = 3.6V typ.
ILED = 0mA to 20mA
RSET
15Ω
Figure 1 – LED Driver with Full-Range Dimming Via PWM Input
L1
VBAT = 1.6V to 6.0V
47µH
1206 Case Size
C1
4.7µF
DRV
IN
SRC
SHDN
ON OFF
LX1992
FB
CS
ADJ
+
-
GND
RCS
4kΩ
VADJ = 0.0V to 0.3V
RSET
15Ω
VF = 3.6V typ.
ILED = 0mA to 20mA
Figure 2 – LED Driver with Full-Range Dimming Via Analog Voltage Input
Note: The component values shown are only examples for a working system. Actual values will vary greatly depending on
desired parameters, efficiency, and layout constraints.
Copyright 2000
Rev. 1.1, 2002-11-21
Microsemi
Page 4
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
ETC [ ETC ]
