lx1996 Microsemi Corporation, lx1996 Datasheet - Page 5

• Manufacturer Part Number: lx1996
• Description: Multi-string Led Back-light Controller
• Manufacturer: 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
Power Supply
Input Voltage
Quiescent current
Sleep Current
Logic
DSEL1 Input High Voltage
DSEL1 Input Low Voltage
DSEL1 input current High
DSEL1 input current Low
DSEL1 Open Voltage
DSEL2 Input High Voltage
DSEL2 Input Low Voltage
DSEL2 Pull-down Resistor
EN Input High Voltage
EN Input Low Voltage
EN input current
EN input current
PWM Input High Voltage
PWM Input Low Voltage
PWM Pull-down Resistor
DIMMING
DI Input Bias Current
Maximum PRG voltage
Minimum PRG voltage
Direct Digital Dimming
Frequency
Direct Digital Dimming Min.
PWM Pulse Width (Note 2)
RT Reference Voltage
Internal PWM Frequency
Sync. freq. Capture Range
Minimum PWM Input Pulse
Width
Device Protection
OVP Threshold Voltage
Parameter
TM
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
Symbol
V
V
V
I
I
V
F
V
OT
V
V
I
DSEL1_H
DSEL1_L
IN sleep
DSEL1-H
F
F
I
I
TH_DI_H
TH_DI_L
INTPWM
TH_OVP
I
DSEL1-L
IN ON
PWM-H
EN_H
PWM-L
V
EN_L
PWM
PWM
= 3V, EN = VIN , R
IN
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
EN ≥2.4V, output not switching, V
EN ≤ 0.4V
DSEL1 = 2.4V
DSEL1 = 0.8V
12V ≥ EN ≥ 2.4V
EN < 0.4V
V
V
V
RT = 100kΩ
CT = 200pF, RT = 100kΩ
CT =.047μF, RT = 100kΩ
Percent of Internal PWM Frequency
For synchronization
DI
DI
DI
Analog Mixed Signal Group
=0.2 to 2.0V, Analog dimming
=2.0V, Analog dimming
=0.2V, Analog dimming
Microsemi
®
Test Conditions / Comment
PRG
= 4.99 kΩ, L=6.8μH, R
Multi-string LED Back-light Controller
SRC
P
CS
RODUCTION
= 0.075Ω, C
= 0.8V
OUTPUT
D
1.83
Min
100
ATASHEET
2.4
-10
1.2
2.4
2.4
2.4
-25
1.9
6
= 4.7uF
0
LX1996
C < Temp <85
Typ
600
600
100
400
1.6
4.0
0.4
0.2
2.0
12
2.0
25
-4
6
4
2
25000
Max
2.17
+25
LX1996
2.5
0.8
2.0
0.8
0.8
0.8
2.1
28
15
10
10
1
1
4
0
C, and the
Units
kHz
mA
µA
µA
µA
kΩ
μA
μA
kΩ
μA
Hz
Hz
Page 5
us
ns
%
V
V
V
V
V
V
V
V
V
V
V
V
V
V