LX1688CPW MICROSEMI, LX1688CPW Datasheet - Page 6
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LX1688CPW
Manufacturer Part Number
LX1688CPW
Description
Manufacturer
MICROSEMI
Datasheet
1.LX1688CPW.pdf
(16 pages)
Specifications of LX1688CPW
Driver Type
CCFL
Operating Supply Voltage (typ)
3.3/5V
Number Of Segments
2
Operating Temperature (min)
0C
Operating Temperature (max)
70C
Operating Temperature Classification
Commercial
Package Type
TSSOP
Pin Count
24
Mounting
Surface Mount
Operating Supply Voltage (min)
3V
Operating Supply Voltage (max)
5.5V
Lead Free Status / RoHS Status
Compliant
Copyright © 2001
Rev. 1.2, 2006-03-09
Controller
Master
Slave
Mode
TM
Controller
Operation
Striking
Striking
RMP_RST
PHA_SYNC
Fault
Fault
ENABLE
VDDSW
Run
Run
BEPOL
SLAVE
CPW 1
CPW 2
BRITE
* Conventional polarity means that the lamp brightness increases with increasing voltage on the BRITE pin.
Pin BEPOL
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
FLOAT
V
V
1M
DD
SS
+
-
1M
2.5
0.5
V
V
POLARITY
Input Pin:
DECODE
BUF
TTL
OLSNS
> 0.6V
< 0.2V
> 0.6V
< 0.2V
VDD
Q
TFF
Reverse polarity means that brightness decreases with increasing voltage
F
X
X
F
EXT
INT
100K
R
T
200K
+ (HI = CHIP_ON, LOW = CHIP_OFF)
VSS
- (LOW = CHIP_ON, HI = CHIP_OFF)
+ (HI = CHIP_ON, LOW = CHIP_OFF
F
PWR_ GD
EXT
1V
GENERATOR
GENERATOR
S I M P L I F I E D B L O C K D I A G R A M
RAMP RUN
/2
VSS
+
-
100K
STRIKE
PWR_ BD
ENABLE POLARITY
Figure – Simplified Block Diagram
O P E R A T I O N A L M O D E S
Input Pin:
100K
SLAVE
1V
VDD
VDD
VDD
ISNS VSNS
VSS
VSS
VSS
Integrated Products Division
VDD
+
-
100K
300mV
1.25V
®
Microsemi
PWR_BD
ERROR AMP
FAULT
VAMP
BRT
INTERNAL VDD
VCOMP ICOMP
IAMP
T A B L E 1
0-2V
RangeMAX™
Output Pin:
FAULT
I_R
COMPARATOR
H
H
L
L
L
L
VOLTAGE
PWR_ GD
COMPARATOR
FAULT
CURRENT
BIAS GEN
CPOR
UVLO
Multiple Lamp CCFL Controller
STEERING
PWR_ BD
OUTPUT
LOGIC
PWR_GD
PWR_BD
Pin: RMP_RST
P
Q
Output: F
Output: F
Output: F
Q
Input: F
Input: F
Input: F
COUNTER
RODUCTION
IGNITE
6 BIT
DIMMING POLARITY*
CONVENTIONAL
FAULT
EXT
EXT
EXT
REVERSE
REVERSE
INT
INT
INT
TRI WAVE
GEN
D
Output: F
Output: F
Output: F
ATA
Input: F
Input: F
Input: F
TTL
BUF
Pin: A_SYNC
LX1688
800mV
600mV
S
HEET
EXT
EXT
EXT
OLSNS
FAULT
VSS_P
INT
INT
INT
B OUT
TRI_C
A OUT
V
DD_P
/ 2
/ 2
/ 2
/ 2
/ 2
/ 2
Ramping up /
Ramping up /
Frequency
F
LX1688
F
down
down
Lamp
EXT
INT
Off
Off
/ 2
/ 2
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