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參數(shù)資料
| 型號： | DS3991VC |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Cost CCFL Controller |
| 中文描述： | 低成本CCFL控制器 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 475K |
| 代理商： | DS3991VC |
General Description
The DS3991 is a controller for cold-cathode fluorescent
lamps (CCFLs) that are used to backlight liquid-crystal
displays (LCDs). The DS3991 is available for both
push-pull and half-bridge drive topologies.
The DS3991 converts a DC voltage (5V to 24V) to the
high-voltage (300V
RMS
to 1400V
RMS
) AC waveform that
is required to power the CCFLs. The push-pull and half-
bridge drive schemes use a minimal number of external
components, which reduces component and assembly
cost and makes the printed circuit board (PCB) design
easy to implement. Both drive schemes provide an effi-
cient DC to AC conversion and produce near-sinu-
soidal waveforms.
Applications
LCD PC Monitors
LCD TVs
Features
CCFL Controller for Backlighting LCD Panels
Minimal External Components Required
Lamp Fault Monitoring for Lamp-Open, Lamp-
Overcurrent, Failure-to-Strike, and Overvoltage
Conditions
Accurate (±5%) On-Board Oscillator for Lamp
Frequency (40kHz to 80kHz)
Accurate (±5%) On-Board Oscillator for DPWM
Burst-Dimming Frequency (80Hz to 300Hz)
Device Supply Undervoltage Lockout
Inverter Supply Undervoltage and Overvoltage
Lockouts
Soft-Start on Burst-Dimming Minimizes Audible
Transformer Noise
Strike Frequency Boost
100% to < 10% Dimming Range
Low Cost
Single-Supply Operation Range: 4.5V to 5.5V
Temperature Range: -40°C to +85°C
16-Pin SO Package (150 mils)
D
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1
1
2
SO
TOP VIEW
3
4
5
6
7
8
14
13
16
15
12
11
10
9
VCC
BRIGHT
PWM_EN
LCM
SVMH
SVML
LOSC
POSC/PWM
VCC
SLOPE
OVD
GB
GA
VCC
VCC
GND
DS3991
Pin Configuration
Ordering Information
Rev 0; 1/08
+Denotes a lead-free package.
T&R = Tape and reel.
Typical Operating Circuits appear at end of data sheet.
PART
CONFIGURATION
Push-Pull
Push-Pull
Half-Bridge
Half-Bridge
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
DIMMING FREQUENCY RANGE (Hz)
80 to 300
80 to 300
80 to 300
80 to 300
PIN-PACKAGE
16 SO (150 mils)
16 SO (150 mils)
16 SO (150 mils)
16 SO (150 mils)
DS3991V+C
DS3991V+T&R/C
DS3991V+
DS3991V+T&R
Low-Cost CCFL Controller
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| DS3991VT | Low-Cost CCFL Controller |
| DS3992Z-18N | Two-Channel, Push-Pull CCFL Controller |
| DS3992Z-18P | Two-Channel, Push-Pull CCFL Controller |
| DS3992 | Two-Channel, Push-Pull CCFL Controller |
| DS3992Z-09N | Two-Channel, Push-Pull CCFL Controller |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS3991VR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Low-Cost CCFL Controller |
| DS3991VRC | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Low-Cost CCFL Controller |
| DS3991VT | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Low-Cost CCFL Controller |
| DS3991VTC | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Low-Cost CCFL Controller |
| DS3991Z+HB | 功能描述:顯示驅動器和控制器 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: 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
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