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DS3994Z+ Datasheet(PDF) 5 Page - Maxim Integrated Products

Part # DS3994Z+
Description  4-Channel Cold-Cathode Fluorescent Lamp Controller
Download  28 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

DS3994Z+ Datasheet(HTML) 5 Page - Maxim Integrated Products

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4-Channel Cold-Cathode
Fluorescent Lamp Controller
_____________________________________________________________________
5
ACTIVE SUPPLY CURRENT
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
5.3
5.1
4.9
4.7
6
7
8
9
10
5
4.5
5.5
4
DPWM = 10%
DPWM = 50%
DPWM = 100%
GATE QC = 3.5nC
SVM < 2V
fLF:OSC = 64kHz
ACTIVE SUPPLY CURRENT
vs. TEMPERATURE
TEMPERATURE (
°C)
22.5
6.5
7.0
7.5
8.0
9.0
8.5
9.5
10.0
10.5
11.0
6.0
-40.0
85.0
VCC = 5.5V
VCC = 5.0V
DPWM = 100%
fLF:OSC = 64kHz
GATE QC = 3.5nC
VCC = 4.5V
INTERNAL FREQUENCY CHANGE
vs. TEMPERATURE
TEMPERATURE (
°C)
22.5
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
-0.6
-0.8
-1.0
-40.0
85.0
LAMP FREQUENCY
DPWM FREQUENCY
TYPICAL OPERATION AT 12V
10
µs
5.0V GA
10
µs
5.0V GB
10
µs
2.0V LCM
10
µs
2.0V OVD
BURST DIMMING AT 150Hz AND 10%
1ms
5.0V GA
1ms
5.0V GB
1ms
2.0V LCM
1ms
2.0V OVD
TYPICAL OPERATION AT 15V
10
µs
5.0V GA
10
µs
5.0V GB
10
µs
2.0V LCM
10
µs
2.0V OVD
TYPICAL OPERATION AT 18V
10
µs
5.0V GA
10
µs
5.0V GB
10
µs
2.0V LCM
10
µs
2.0V OVD
TYPICAL STARTUP WITH SVM
5ms
2.0V SVM
5ms
5.0V GB
5ms
2.0V LCM
5ms
1.0V OVD
Typical Operating Characteristics
(VCC = +5.0V, TA = +25°C, unless otherwise noted.)


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