參數(shù)資料
型號(hào)： DS3994
廠商： Maxim Integrated Products, Inc.
英文描述： 4-Channel Cold-Cathode Fluorescent Lamp Controller
中文描述： 4通道冷陰極熒光燈控制器
文件頁數(shù)： 3/28頁
文件大?。?/td> 557K
代理商： DS3994
D
4-Channel Cold-Cathode
Fluorescent Lamp Controller
_____________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +4.5V to +5.5V, T
A
= -40
°
C to +85
°
C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
High-Level Output Voltage
(GA, GB)
V
OH2
I
OH2
= -1mA
V
CC
- 0.4
V
UVLO Threshold
—
V
CC
Rising
UVLO Threshold
—
V
CC
Falling
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
V
UVLOR
V
UVLOF
V
UVLOH
V
SVMT
V
SVMH
4.3
V
V
3.7
100
2.0
150
4
4
1.35
50
1.75
3.35
2.35
2.35
mV
V
mV
μA
μA
V
k
V
V
V
V
kHz
1.95
2.05
V
DCB
R
DCB
V
LOT
V
LOC
V
LRT
V
OVDT
f
LF:OSC
(Note 3)
(Note 3)
(Note 3)
(Note 3)
1.65
3.15
2.29
2.25
20
1.85
3.55
2.41
2.45
80
Lamp Frequency Source
Frequency Tolerance
f
LFS:TOL
LOSC resistor ±0.1% over temperature
-2
+2
%
Lamp Frequency Receiver
Duty Cycle
f
LFR:DUTY
40
60
%
DPWM Frequency Range
f
D:OSC
22.5
440.0
Hz
DPWM Source Frequency
Tolerance
f
DSR:TOL
POSC resistor ±0.1% over temperature
-2
+2
%
DPWM Receiver Duty Cycle
f
DFE:DUTY
40
60
%
DPWM Receiver
Frequency Range
f
DR:OSC
22.5
440.0
Hz
DPWM Receiver
Minimum Pulse Width
t
DR:MIN
(Note 4)
25
μs
BRIGHT Voltage
—
Minimum
Brightness
V
BMIN
Positive slope (CR2.7 = 0)
0.5
V
BRIGHT Voltage
—
Maximum
Brightness
V
BMAX
Positive slope (CR2.7 = 0)
2.0
V
BRIGHT Voltage
—
Minimum
Brightness
V
BMIN
Positive slope (CR2.7 = 1)
0
V
BRIGHT Voltage
—
Maximum
Brightness
V
BMAX
Positive slope (CR2.7 = 1)
3.3
V
Gate-Driver Output Rise/Fall Time
GAn and GBn Duty Cycle
t
R
/t
F
C
L
= 600pF
(Note 5)
50
100
44
ns
%
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