Datasheet

9
LT1301
TYPICAL APPLICATIONS N
U
LCD Contrast Supply
+
100µF
22µF
35V
CONTRAST 
V
OUT
–4V TO –29V 12mA
MAXIMUM FROM 1.8V SUPPLY 
(77% EFFICIENT)
20mA MAXIMUM FROM 
3V SUPPLY (83% EFFICIENT)
2.2µF
SW
PWM IN
0% TO 100%
CMOS DRIVE 0V TO 5V
150K
12K
12K
1
10
8
2
9
3
7
4
I
LIM
PGND
GND
SENSE
LT1301
SELECT
LT1300 TA5
1N5819
T1
T1 = DALE LPE-5047-AO45 [phone]
SHDN
SHUTDOWN
NC
NC
V
IN
V
IN
1.8V TO 6V
+
+
0.1µF
1µF
10µF
7.5K
1%
22pF
3kV
0.068µF
120Ω
1Ω
WIMA
MKP20
ZTX849ZTX849
1N4148
2N3904
CCFL
SW
I
LIM
PGND
GND
SENSE
LT1301
SELECT
1N5817
L1
47µH
V
IN

2V - 6V
T1 = COILTRONICS CTX110654-1
L1 = COILCRAFT D03316-473
SHDN
SHUTDOWN
V
IN
+
+
15
TI
4
97
32
0 - 5V
DC
IN
INTENSITY ADJUST
100µA TO 2mA BULB CURRENT
LT1300 TA6
NC
Low-Voltage CCFL Power Supply