LX1745CPW Microsemi Analog Mixed Signal Group, LX1745CPW Datasheet - Page 13

• Manufacturer Part Number: LX1745CPW
• Description: IC LED DRVR WT/CLR BCKLT 20TSSOP
• Manufacturer: Microsemi Analog Mixed Signal Group
• Type: Backlight, White LED, Color LEDr

Specifications of LX1745CPW

• Constant Current: Yes
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 3
• Internal Driver: Both
• Type - Primary: Backlight
• Type - Secondary: Color, White LED
• Voltage - Supply: 1.6 V ~ 6 V
• Voltage - Output: 25V
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 100mA
• Internal Switch(s): Yes
• Efficiency: 90%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency: -

Copyright © 2000
Rev. 1.2, 2006-02-27
GND
Vin
TM
ADJ1
SHDN1
SHDN
SHDN2
VLCD2
1
1
+
C4
spare
4.7uF
1
1
1
1
1
35V
C6
22V
R9
10K
+
+
C1
4.7uF
6.3V
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
R10
10K
1000pF
C7
R11
10K
47.0uH
L3
L2
1.25M
72K
R8
R7
L1
UPS5819
CR3
FDV303N
1
2
2
JU1
JU2
JU3
Figure 10 – LX1745EVAL Evaluation Board Schematic
Q1
2
1
1
UPS5819
Figure 11 – LX1745EVAL Evaluation Board
CR2
UPS5819
CR1
E V A L U A T I O N B O A R D
1uF
Integrated Products Division
10
C9
1
2
3
4
5
6
7
8
9
+
4.7uF
35V
SW1
ADJ1
SHDN1
VIN
SHDN
DRV
SRC
LEDGND
SHDN2
SW2
C5
U1
LX1745
®
UPS5819
UPS5819
Microsemi
CR5
CR4
LCDGND1
LCDGND2
1000pF
C8
ADJ2
REF
OVP
BRT
FB1
LFB
FB2
CS
1uF
20
19
18
17
16
15
14
13
12
11
C10
1M
R5
R6
72K
Triple Output Boost – LED Driver / LCD Bias
R4
4.02K
72K
R1
1M
R2
C12
1uF
1000pF
C13
1uF
C3
R13
100K
P
100K
RODUCTION
R12
+
C2
4.7uF
35V
R3
15
+
C11
Spare
JU4
2
1
LED 4
LED 3
LED 2
LED 1
D
ATASHEET
18V
1
1
1
1
1
1
LX1745
1
1
VLCD1
VOUT
GND
FDBK
ADJ2
BRT
-VLCD
REF
Page 13