LX1996ILQ MICROSEMI [Microsemi Corporation], LX1996ILQ Datasheet - Page 6

• Manufacturer Part Number: LX1996ILQ
• Description: Multi-string LED Back-light Controller
• Manufacturer: MICROSEMI [Microsemi Corporation]

Copyright © 2007
Rev. 1.0, 2007-12-14
Unless otherwise specified, the following specifications apply over the operating ambient temperature of -40
following test conditions: VIN=12V, V
LED Short Protection
Threshold
CS pin Over-voltage Limit
LED Current Sink Outputs
LED DC Current Programming
Accuracy (including string to
string matching)
Analog Dimming Accuracy
Direct Digital Dimming
Accuracy
Current Matching between
strings (Note 3).
Regulated CS Pin Voltage
LED current On Rise Time
LED current Off Fall Time
Csx current to PRG current
Ratio
PRG Reference Voltage
LED Current Temperature Profiler
LED Over Temperature Shut-
down Voltage Threshold
OT Recovery Voltage
Threshold
OT Input Bias Current
VLDO Regulator
VLDO Source Current
UVLO
UVLO Hysteresis
Boost Converter
DRV Rise Time
DRV Fall Time
Reference Voltage (Note 1, 2)
V
VLDO Output Voltage
OT
Input vs. PRG pin
TM
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
I
OT
CS-MATCH
I
T
I
T
CS
V
T
T
CSAVG
V
V
V
V
V
I
CS_Rise
Vcs
V
V
V
CS_Fall
VLDO
I
I
UVLO
= 3V, EN = VIN , R
RISE
FALL
/I
PRG
PRG
PRG
PRG
CS
CS
LDO
CS
OT
OT
PRG
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
Voltage at CS pin that latches off it’s
respective string.
Voltage at CS pin that clamps Boost Output
V
Mode
R
= 0.8V; DI ≥ 2.0V; Direct Analog Dimming
Mode
DI=0.5V; Direct Analog Dimming Mode
Direct Digital Dimming Mode; V
PWM input at 25kHz , 25% duty cycle;
Average (DC) LED current.
VIN = 6V to 28V; -40°C to 85°C; VCS = 0.8V
to 5V; DI ≥ 2.0V; Direct Analog Dimming Mode
At the lowest CS pin, I
V
V
V
V
V
External available current
VLDO rising
C
C
CS
OT
OT
OT
in
in
PRG
L
L
Analog Mixed Signal Group
= 1000pF; 10% to 90% of V
= 1000pF; 90% to 10% of V
≥6.5V; 0mA ≤ I
< 6.5V; 0mA ≤ I
= 0.8V; DI ≥ 2.0V; Direct Analog Dimming
= 2.48V
= 1.8V
= 1.47V
= 6.65k (LED current set for15mA);, V
Microsemi
®
PRG
= 4.99 kΩ, L=6.8μH, R
VLDO
VLDO
Multi-string LED Back-light Controller
CS
≤ 6.0mA
≤ 6.0mA
= 20mA
LDO
LDO
CS
SRC
P
= 0.8V;
RODUCTION
= 0.075Ω, C
CS
OUTPUT
D
19.2
14.4
4.75
-1.3
ATASHEET
0.5
4.5
4.0
23
= 4.7uF
0
C < Temp <85
0.75
1.47
4.25
0.25
200
400
2.0
1.8
2.0
1.2
0.8
5.0
15
25
20
15
50
25
14
5
5
20.8
15.6
5.25
5.25
LX1996
1.3
4.5
27
1
1
0
C, and the
nsec
mA
mA
mA
mA
mA
μA
Page 6
ns
ns
ns
%
V
V
V
V
V
V
V
V
V
V
V
V
V