lx1993 Microsemi Corporation, lx1993 Datasheet - Page 4

• Manufacturer Part Number: lx1993
• Description: High Efficiency Led Driver
• Manufacturer: Microsemi Corporation

Copyright © 2000
Rev. 1.0b, 2005-03-03
Note: The component values shown are only examples for a working system. Actual values will vary greatly depending on
Typical LED Driver Applications
V
V
I
V
V
I
LED
LED
desired parameters, efficiency, and layout constraints.
V
BAT
F
BAT
F
I N T E G R A T E D
ADJ
= 3.6V typ.
= 3.6V typ.
= 20mA to 0mA
= 20mA to 0mA
= 1.6V to 6.0V
= 1.6V to 6.0V
= 0.3V to 0.0V
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
Figure 2 – LED Driver with Full-Range Dimming Via Analog Voltage Input
ON OFF
ON OFF
Figure 1 – LED Driver with Full-Range Dimming Via PWM Input
P R O D U C T S
+
-
A P P L I C A T I O N C I R C U I T S
Integrated Products Division
1206 Case Size
1206 Case Size
IN
SHDN
ADJ
IN
SHDN
ADJ
LX1993
LX1993
47
47
Microsemi
L
L
µ
µ
GND
G ND
1
1
H
H
OUT
O UT
SW
SW
CS
CS
FB
FB
R
1
R
1
High Efficiency LED Driver
k
k
CS
CS
Ω
Ω
P
RODUCTION
1
1
C
C
µ
µ
1
F
1
F
R
1 5 Ω
R
1 5 Ω
S E T
S E T
LX1993
Page 4