DS3994 Maxim Integrated Products, DS3994 Datasheet - Page 3

• Manufacturer Part Number: DS3994
• Description: 4-Channel Cold Cathode Fluorescent Lamp Controller
• Manufacturer: Maxim Integrated Products

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DataSheet
4
ELECTRICAL CHARACTERISTICS (continued)
(V
High-Level Output Voltage
(GA, GB)
UVLO Threshold—V
UVLO Threshold—V
UVLO Hysteresis
SVM Falling Edge Threshold
SVM Hysteresis
LCM and OVD Source Current
LCM and OVD Sink Current
LCM and OVD DC Bias Voltage
LCM and OVD Input Resistance
Lamp Off Threshold
Lamp Overcurrent Threshold
Lamp Regulation Threshold
OVD Threshold
Lamp Frequency Range
Lamp Frequency Source
Frequency Tolerance
Lamp Frequency Receiver
Duty Cycle
DPWM Frequency Range
DPWM Source Frequency
Tolerance
DPWM Receiver Duty Cycle
DPWM Receiver
Frequency Range
DPWM Receiver
Minimum Pulse Width
BRIGHT Voltage—Minimum
Brightness
BRIGHT Voltage—Maximum
Brightness
BRIGHT Voltage—Minimum
Brightness
BRIGHT Voltage—Maximum
Brightness
Gate-Driver Output Rise/Fall Time
GAn and GBn Duty Cycle
CC
U
.com
= +4.5V to +5.5V, T
PARAMETER
CC
CC
Rising
Falling
A
= -40°C to +85°C.)
f
SYMBOL
f
f
DFE:DUTY
LFR:DUTY
V
V
f
f
V
f
DSR:TOL
t
LFS:TOL
V
V
V
V
V
f
DR:OSC
LF:OSC
DR:MIN
V
V
V
R
D:OSC
V
UVLOR
UVLOH
V
V
UVLOF
V
BMAX
BMAX
t
SVMH
OVDT
SVMT
BMIN
BMIN
R
DCB
DCB
OH2
LOC
LOT
LRT
/t
F
_____________________________________________________________________
I
(Note 3)
(Note 3)
(Note 3)
(Note 3)
LOSC resistor ±0.1% over temperature
POSC resistor ±0.1% over temperature
(Note 4)
Positive slope (CR2.7 = 0)
Positive slope (CR2.7 = 0)
Positive slope (CR2.7 = 1)
Positive slope (CR2.7 = 1)
C
(Note 5)
OH2
L
= 600pF
Fluorescent Lamp Controller
= -1mA
CONDITIONS
4-Channel Cold-Cathode
V
CC
MIN
1.95
1.65
3.15
2.29
2.25
22.5
22.5
3.7
2.0
3.3
20
40
40
25
-2
-2
- 0.4
TYP
1.35
1.75
3.35
2.35
2.35
100
150
2.0
50
50
4
4
440.0
440.0
MAX
2.05
1.85
3.55
2.41
2.45
100
4.3
0.5
+2
+2
80
60
60
44
0
UNITS
kHz
mV
mV
kΩ
µA
µA
Hz
Hz
µs
ns
%
%
%
%
%
V
V
V
V
V
V
V
V
V
V
V
V
V
3