lx1996 Microsemi Corporation, lx1996 Datasheet - Page 11

• Manufacturer Part Number: lx1996
• Description: Multi-string Led Back-light Controller
• Manufacturer: Microsemi Corporation

Copyright © 2007
Rev. 1.0, 2007-12-14
6V to 28V
SMBus
Figure 1 – Typical Application – This circuit demonstrates the LX1996 and LX1972 interfacing to the
LX1800, which is an SMBus ADC/DAC. This application also uses the Display Power Saving Technology
(DPST) signal.
4.7uF/6.3V,X7R
24.9K
SCL
SCD
GND
ADR
TM
LX1800
LX1972
DPST PWM
3 AMP
VDD
Aout
REF
Ain
4.7uF/50V
X5R 1210
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
LX1996ILQ = Multi-string LED Back-light Controller, Microsemi
4.7uF
NCP18WB104J03RA = NTC, 100K at 25C, B = 4250, Murata
SI3458DV = N channel MOSFET, 60V/1.2A, TSOP-6,Vishay
5V
GRM32ER71H475KA88 = 4.7uF/50V, X5R, 1210, Murata
GRM188R60J475KE19 = 4.7uF/6.3V, X7R, 0603, Murata
LX1800ILD = SMBus to Analog Interface, Microsemi
LX1972IBC = Ambient Light Detector, Microsemi
23
24
10
12
1
3
2
5
4
8
7
9
B160 = Schottky Diode 1A/60V, SMA, Vishay
SLF6028T-6R8M1R5-PF, 6.8μH, 1.5A, TDK
Key Components - Bill of Materials
N/C
VIN
EN
DSEL1
VLDO
DI
DSEL2
RT
PWM
CT
CLF
GND
T Y P I C A L A P P L I C A T I O N
6.8uH
Analog Mixed Signal Group
PGND
DRV
SRC
OVP
PRG
CS1
CS2
CS3
CS4
CS5
CS6
Microsemi
OT
®
Si3458DV
22
19
13
14
15
16
17
18
11
21
20
6
4.99k
5V
Multi-string LED Back-light Controller
22.1k
0.075
B160
X5R, 1210
4.7uF/50V
100K@25C
B=4250
NTC
P
78.7K
RODUCTION
1M
D
Large LCD Backlight
ATASHEET
LX1996
Page 11