lx1688 Microsemi Corporation, lx1688 Datasheet - Page 3

• Manufacturer Part Number: lx1688
• Description: Multiple Lamp Ccfl Controller
• Manufacturer: Microsemi Corporation

Copyright © 2001
Rev. 1.2, 2006-03-09
Unless otherwise specified, specifications apply over the range: T
LX1688CWP), V
¹Conventional polarity means that the lamp brightness increases with increasing voltage on the BRITE pin. Reverse polarity means that brightness decreases with increasing
voltage
² Guaranteed but not production tested
Supply Voltage (V
BRITE Linear DC Voltage Range
BRITE PWM Logic Signal Voltage Range
Digital Inputs (SLAVE, PHA_SYNC, RMP_RST, BEPOL, ENABLE )
ISNS input threshold voltage
ISNS input threshold voltage
Conventional¹ Dimming
BRITE Input Voltage
Reverse Dimming
BRITE Input Voltage
Max Brightness V
Full-darkness V
BRITE-to-ICOMP propagation delay
STRIKE AND RAMP GENERATOR
Max. number of strike before fault
Triangular Wave Generator Analog Output
Peak Voltage
Triangular Wave Generator Analog Output
Valley Voltage
Triangular Wave Generator Oscillation
Frequency
Max. Lamp Strike Frequency
Lamp Run Frequency
Lamp Run Frequency
Lamp Run Frequency regulation over V
OLSNS threshold voltage
OLSNS hysteresis
OLSNS-to-ICOMP propagation delay
Fault, PHA_SYNC, RMP_RST, logic high
threshold
Fault, PHA_SYNC, RMP_RST, logic low
threshold
Minimum Fault-pin output current
DIMMER
TM
DD_P
Parameter
BRT
DD
BRT
= 3.0 to 5.5V. R
voltage
,V
Voltage
DDP
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
)
R E C O M M E N D E D O P E R A T I N G C O N D I T I O N S
I
= 80Kohms, C
DD
E L E C T R I C A L C H A R A C T E R I S T I C S
Parameter
F
I_FAULT
V
V
LAMP_REG
V
Symbol
V
V
V
V
V
T
F
V
V
T
BRITE_MAX
BRITE_MAX
BRITE_MIN
BRITE_MIN
BRT_DARK
N
TH_OLSNS
D_OLSNS
H_OLSNS
TRI
BRT_FULL
V
V
MAX_STK
F
F
TH_IAMP
TH_IAMP
D_BRITE
F
V
V
Integrated Products Division
FAULT
P_TRI
V_TRI
LAMP
LAMP
_TRI
H
L
= 0.083µF
®
Microsemi
GBNT ²
V
V
V
V
V
V
T
T
F
V
T
V
T
V
A
BEPOL
BEPOL
BEPOL
BEPOL
BEPOL
BEPOL
A
A
MAX_STK
A
A
OLSNS
OLSNS
OLSNS
RangeMAX™
=-40 to 85
= 0 to 70
= -40 to 85
= 0 to 70
=-40 to 85
Test Conditions
= V
= V
= V
= V
= V
= V
> 0.65V; VDD=5V
> 0.65V; VDD=5V
> 0.65V
= F
DD
DD
SS
SS
SS
SS
O
O
O
, V
, V
C
C
or float
or float
O
C, V
O
LAMP
C
C
Multiple Lamp CCFL Controller
BRITE
BRITE
DD
X ~2.5
= 0.4V
= 2.6V
(For LX1688IWP) & T
P
RODUCTION
V
DD
Min
1.90
540
150
150
0.15
2.6
0.4
0.4
2.6
150
740
10
2.3
63
60
57
– 0.5
7
D
A
ATA
= 0 to 70
Min
LX1688
3
1
0
0
Typ.
590
300
300
0.7
195
790
2.5
0.5
0.5
2.5
2.0
15
2.5
0.3
S
10
65
65
0
2
4
LX1688
HEET
O
Typ
C, V
DD
Max
640
2.05
0.05
0.40
450
550
840
(For
2.6
13
70
70
1
1
6
Max
V
V
5.5
2.5
DD
DD
LX1688
Units
Units
% /V
‘mV
‘mA
KHz
KHz
KHz
‘mV
mV
mV
us
µS
Hz
V
V
V
V
V
V
V
V
V
V
V
V
Page 3