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MAX8709BETI+

更新时间： 2024-09-15 21:12:51
品牌 Logo 应用领域
美信 - MAXIM 信息通信管理
页数 文件大小 规格书
24页 1801K
描述
Fluorescent Light Controller, 0.5A, BICMOS, 5 X 5 MM, 0.80 MM, TQFN-28

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中文翻译

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MAX8709BETI+ 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：QFN
包装说明：HVQCCN, LCC28,.2SQ,20针数：28
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.31.00.01风险等级：5.73
模拟集成电路 - 其他类型：FLUORESCENT LIGHT CONTROLLER控制技术：PULSE WIDTH MODULATION
最大输入电压：28 V最小输入电压：4.6 V
标称输入电压：12 VJESD-30 代码：S-XQCC-N28
JESD-609代码：e3长度：5 mm
湿度敏感等级：1功能数量：1
端子数量：28最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：0.5 A
封装主体材料：UNSPECIFIED封装代码：HVQCCN
封装等效代码：LCC28,.2SQ,20封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
电源：5 V认证状态：Not Qualified
座面最大高度：0.8 mm子类别：Switching Regulator or Controllers
标称供电电压 (Vsup)：5 V表面贴装：YES
切换器配置：PUSH-PULL技术：BICMOS
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：5 mmBase Number Matches：1

MAX8709BETI+ 数据手册

 浏览型号MAX8709BETI+的Datasheet PDF文件第2页浏览型号MAX8709BETI+的Datasheet PDF文件第3页浏览型号MAX8709BETI+的Datasheet PDF文件第4页浏览型号MAX8709BETI+的Datasheet PDF文件第5页浏览型号MAX8709BETI+的Datasheet PDF文件第6页浏览型号MAX8709BETI+的Datasheet PDF文件第7页 
MAX8709B  
High-Efficiency CCFL Backlight  
Controller with SMBus Interface  
General Description  
Features  
● Synchronized to Resonant Frequency  
The MAX8709B integrated backlight controller is opti-  
mized to drive cold-cathode fluorescent lamps (CCFLs)  
using a resonant full-bridge inverter architecture. The  
resonant operation maximizes striking capability and  
provides near-sinusoidal waveforms over the entire input  
range to improve CCFL lifetime. The controller operates  
over a wide input voltage range of 4.6V to 28V with high  
power-to-light efficiency. The device also includes safety-  
features that effectively protect against many single-point-  
fault conditions including lamp-out and short-circuit faults.  
Longer Lamp Life  
Guaranteed Striking Capability  
High Power-to-Light Efficiency  
● Wide Input Voltage Range (4.6V to 28V)  
● Feed Forward for Excellent Line Rejection  
● SMBus Dimming Control Interface  
● 10:1 Dimming Range  
● Guaranteed 200Hz to 220Hz DPWM Frequency  
The MAX8709B achieves 10:1 dimming range by “chop-  
ping” the lamp current on and off using a digital pulse-  
width-modulation (DPWM) method. The minimum DPWM  
duty cycle of the MAX8709B is 12.5%. The brightness is  
controlled with a 2-wire SMBus-compatible interface. The  
device directly drives the four external N-channel power  
MOSFETs of the full-bridge inverter. An internal 5.3V linear  
regulator powers the MOSFET drivers, the DPWM oscil-  
lator, and most of the internal circuitry. The MAX8709B is  
available in a space-saving 28-pin thin QFN package and  
operates over a -40°C to +85°C temperature range.  
● Secondary Voltage Limit Reduces Transformer  
Stress  
● Adjustable Lamp-Out Protection with 1s Timer  
● Secondary Current Limit Protects Against High-  
Voltage Short Circuits to Ground  
● Small, 5mm x 5mm, Thin QFN Package  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
MAX8709BETI  
-40°C to +85°C  
28 Thin QFN  
Applications  
● Notebook Computer  
● LCD Monitors  
● LCD TVs  
Displays  
Pin Configuration appears at end of data sheet.  
Minimal Operating Circuit  
V
IN  
BATT  
GND  
V
V
CC  
DD  
BST2  
BST1  
GH1  
LOT  
REF  
MAX8709B  
LX1  
LX2  
GL1  
ILIM  
CCV  
CCI  
PGND  
GL2  
GH2  
VFB  
SUS  
SDA  
SCL  
ISEC  
IFB  
19-0768; Rev 1; 10/14  
1234567...24

中文翻译

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