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(yè)數(shù)： 7/28頁(yè)
文件大?。?/td> 557K
代理商： DS3994
D
4-Channel Cold-Cathode
Fluorescent Lamp Controller
_____________________________________________________________________
7
Pin Description
PINS BY CHANNEL (n = 1
–
4)
CH 1
CH 2
FUNCTION
NAME
CH 3
CH 4
GAn
7
11
17
21
MOSFET A Gate Drive. Connect directly to logic-level mode
n-channel MOSFET. Leave open if channel is unused.
GBn
8
12
18
22
MOSFET B Gate Drive. Connect directly to logic-level mode
n-channel MOSFET. Leave open if channel is unused.
LCMn
9
13
19
23
Lamp Current Monitor Input. Lamp current is monitored by measuring a
voltage across a resistor placed in series with the low-voltage side of the
lamp. Leave open if channel is unused.
OVDn
10
14
20
24
Overvoltage Detection. Lamp voltage is monitored through a capacitor-
divider placed on the high-voltage side of the transformer. Leave open if
channel is unused.
NAME
GND
V
CC
PIN
15
16
FUNCTION
Ground Connection
Power-Supply Connection
BRIGHT
5
Analog Brightness Control Input.
Used to control DPWM dimming. Ground when using a PWM signal at
PSYNC to control brightness.
SVM
SDA
SCL
FAULT
6
25
26
27
Supply Voltage Monitor Input.
Used to monitor the inverter voltage for undervoltage conditions.
Se a D a a I n p u O u p u
I
2
C b d ecti onal d ata p n, w hi ch r eq ui es a p ul up r esi stor to r eal ze hi g h l og c l evel s.
Serial Clock Input.
I
2
C clock input.
Fault Output.
This active-low, open-drain pin, requires an external pullup resistor to realize high logic levels.
LSYNC
28
Lamp Frequency Input/Output.
This pin is the input for an externally sourced lamp frequency when the
DS3994 is configured as a lamp frequency receiver. If the DS3994 is configured as a lamp frequency source
(i.e., the lamp frequency is generated internally), the frequency is output on this pin for use by other lamp
frequency receiver DS3994s.
LOSC
A0
1
2
Lamp Oscillator Resistor Adjust.
A resistor to ground on this pin sets the frequency of the lamp oscillator.
Address Select Input.
Determines the DS3994
’
s I
2
C slave address.
PSYNC
3
DPWM Input/Output.
This pin is the input for an externally generated DPWM signal when the DS3994 is
configured as a DPWM receiver. If the DS3994 is configured as a DPWM source (i.e., the DPWM signal is
generated internally), the DPWM signal is output on this pin for use by other DPWM receiver DS3994s.
POSC
4
DPWM Oscillator Resistor Adjust.
A resistor to ground on this lead sets the frequency of the DPWM
oscillator (dimming clock). This lead can optionally accept a 22.5Hz to 440Hz clock as the source timing for
the internal DPWM signal.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS3994Z+ 功能描述:顯示驅(qū)動(dòng)器和控制器 4-Ch CCFL Controller RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel
DS3994Z+T&R 制造商:Maxim Integrated Products 功能描述:2ND GEN 4CH CCFL CON SOIC-28 T&R LF - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC CCFL CNTRLR 4CH 28-SOIC
DS3994Z+T&R 功能描述:顯示驅(qū)動(dòng)器和控制器 4-Ch CCFL Controller RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel
DS3994Z+W 功能描述:顯示驅(qū)動(dòng)器和控制器 4-Ch CCFL Controller RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel
DS3CC 制造商:Thomas & Betts 功能描述:30A,MG,CUP CAP
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