Datasheet

DS3882
Dual-Channel Automotive CCFL Controller
_____________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +4.75V to +5.25V, T
A
= -40°C to +105°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
High-Level Output Voltage
(GA, GB)
V
OH1
I
OH1
= -1mA
V
CC
-
0.4
V
UVLO Threshold: V
CC
Rising V
UVLOR
4.3 V
UVLO Threshold: V
CC
Falling V
UVLOF
3.7 V
UVLO Hysteresis V
UVLOH
200 mV
SVML/H Threshold: Rising V
SVMR
2.03 2.08 2.15 V
SVML/H Threshold: Falling V
SVMF
1.95 2.02 2.07 V
LCM and OVD DC Bias Voltage V
DCB
1.1 V
LCM and OVD Input Resistance R
DCB
50 kΩ
Lamp Off Threshold V
LOT
(Note 3) 0.22 0.25 0.28 V
Lamp Over Current V
LOC
(Note 3) 2.2 2.5 2.8 V
Lamp Regulation Threshold V
LRT
(Notes 3, 4) 0.9 1.0 1.1 V
OVD Threshold V
OVDT
(Note 3) 0.9 1.0 1.1 V
Lamp Frequency Source
Frequency Range
f
LFS:OSC
40 100 kHz
Lamp Frequency Source
Frequency Tolerance
f
LFS:TOL
LOSC resistor ±2% over temperature -5 +5 %
Lamp Frequency Receiver
Frequency Range
f
LFR:OSC
40 100 kHz
Lamp Frequency Receiver
Duty Cycle
f
LFR:DUTY
40 60 %
DPWM Source (Resistor)
Frequency Range
f
DSR:OSC
22.5 440.0 Hz
DPWM Source (Resistor)
Frequency Tolerance
f
DSR:TOL
POSC resistor ±2% over temperature -5 +5 %
DPWM Source (Ext. Clk)
Frequency Range
f
DSE:OSC
22.5 440.0 Hz
DPWM Source (Ext. Clk)
Duty Cycle
f
DFE:DUTY
40 60 %
DPWM Receiver
Min Pulse Width
t
DR:MIN
(Note 5) 25 µs
BRIGHT Voltage: Minimum
Brightness
V
BMIN
0.5 V
BRIGHT Voltage: Maximum
Brightness
V
BMAX
2.0 V
Gate Driver Output Rise/Fall Time t
R
/ t
F
C
L
= 600pF 100 ns
GAn and GBn Duty Cycle (Note 6) 44 %