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| 型号： | DS3988T+T&R |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/23页 |
| 文件大小： | 0K |
| 描述： | IC CCFL CNTRLR 8CH 48TQFP |
| 标准包装： | 2,000 |
| 类型： | CCFL 控制器 |
| 频率： | 40 ~ 80 kHz |
| 电流 - 电源： | 15mA |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 48-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 带卷 (TR) |
Rev 0; 4/05
8-Channel Cold-Cathode
Fluorescent Lamp Controller
General Description
The DS3988 is an 8-channel controller for cold-cathode
fluorescent lamps (CCFLs) used to backlight liquid
crystal displays (LCDs) in TV and PC monitor applica-
tions. The DS3988 supports configurations of 1 to 8
lamps, and multiple DS3988 controllers can be cascad-
ed to support applications requiring more than 8 lamps.
Applications
LCD Televisions
LCD PC Monitors
Ordering Information
Features
? High-Density CCFL Controller for LCD TV and PC
Monitor Backlights
? Can Be Easily Cascaded to Support More Than
8 Lamps
? Minimal External Components
? Analog Brightness Control
? Per-Channel Lamp Control Ensures Equal
Brightness Among Lamps and Maximizes Lamp
Life
? Gate Driver Phasing Minimizes DC Supply Current
Surges
PART
DS3988T
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
48 TQFP
? Per-Channel Lamp Fault Monitoring for Lamp
Open, Lamp Overcurrent, Failure to Strike, and
Overvoltage Conditions
DS3988T+ -40°C to +85°C
+ Denotes lead-free package.
48 TQFP
? Accurate (±5%) Independent On-Board Oscillators
for Lamp Frequency (40kHz to 80kHz) and DPWM
TOP VIEW
Pin Configuration
Burst Dimming Frequency (22.5Hz to 440Hz)
? Can Be Synchronized to External Sources for the
Lamp and DPWM Frequencies
? <10% to 100% Dimming Range
? Programmable Soft-Start Minimizes Audible
Transformer Noise
GA1
GB1
LCM1
OVD1
1
2
3
4
36
35
34
33
OVD8
LCM8
GB8
GA8
? I 2 C-Compatible Serial Port and On-Board
Nonvolatile (NV) Memory Allow Device
Customization
? 8-Byte NV User Memory for Storage of Serial
GA2
GB2
LCM2
OVD2
GA3
GB3
LCM3
OVD3
5
6
7
8
9
10
11
12
DS3988
32
31
30
29
28
27
26
25
OVD7
LCM7
GB7
GA7
OVD6
LCM6
GB6
GA6
Numbers and Date Codes
? 4.5V to 5.5V Single-Supply Operation
? -40°C to +85°C Temperature Range
? 48-Lead TQFP (7mm x 7mm) Package
48-LEAD TQFP
7 x 7 x 1.0mm
Typical Operating Circuit appears at end of data sheet.
______________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS3991 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost CCFL Controller |
| DS3991V | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost CCFL Controller |
| DS3991VC | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost CCFL Controller |
| DS3991VR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost CCFL Controller |
| DS3991VRC | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost CCFL Controller |
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