參數(shù)資料
型號: 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): 27/28頁
文件大?。?/td> 557K
代理商: DS3994
D
4-Channel Cold-Cathode
Fluorescent Lamp Controller
____________________________________________________________________
27
Typical Operating Circuits
DS3994
BRIGHT
V
CC
V
CC
SVM
GAn
GBn
OVDn
LCMn
C1
LAMP VOLTAGE MONITOR
C3
R8
CCFL LAMP
TRANSFORMER
DUAL POWER
MOSFET
SUPPLY VOLTAGE
(5V
±
10% TO
24V
±
10%)
V
CC
= 5V
±
10%
C2
R1
R2
C5
C4
LAMP CURRENT MONITOR
NOTE 1: ONLY ONE CHANNEL SHOWN TO SIMPLIFY DRAWING.
NOTE 2: SEE THE
COMPONENT SELECTION
SECTION FOR RECOMMENDED EXTERNAL COMPONENTS.
GND
PSYNC
LSYNC
LOSC
POSC
R3
R4
R5
R6
R7
CONFIGURATION
PORT
FAULT
SDA
SCL
A0
ANALOG BRIGHTNESS
EXTERNAL DIGITAL PWM INPUT/
INTERNAL DIGITAL PWM OUTPUT
EXTERNAL LAMP FREQUENCY INPUT/
INTERNAL LAMP FREQUENCY OUTPUT
Figure 13. Typical Operating Circuit
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