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MAX17149ETE+

更新时间： 2024-11-07 19:49:59
品牌 Logo 应用领域
美信 - MAXIM 驱动信息通信管理接口集成电路
页数 文件大小 规格书
21页 1007K
描述
LED Driver, 60-Segment, BICMOS, 3 X 3 MM, ROHS COMPLAINT, QFN-16

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MAX17149ETE+ 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, LCC16,.12SQ,20针数：16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.31.00.01风险等级：8.6
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：S-XQCC-N16
JESD-609代码：e3长度：3 mm
湿度敏感等级：1复用显示功能：NO
功能数量：1区段数：60
端子数量：16最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：UNSPECIFIED
封装代码：HVQCCN封装等效代码：LCC16,.12SQ,20
封装形状：SQUARE封装形式：CHIP CARRIER
峰值回流温度（摄氏度）：NOT SPECIFIED电源：12 V
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Display Drivers最大供电电压：26 V
最小供电电压：3 V标称供电电压：12 V
表面贴装：YES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：3 mmBase Number Matches：1

MAX17149ETE+ 数据手册

 浏览型号MAX17149ETE+的Datasheet PDF文件第2页浏览型号MAX17149ETE+的Datasheet PDF文件第3页浏览型号MAX17149ETE+的Datasheet PDF文件第4页浏览型号MAX17149ETE+的Datasheet PDF文件第5页浏览型号MAX17149ETE+的Datasheet PDF文件第6页浏览型号MAX17149ETE+的Datasheet PDF文件第7页 
EVALUATION KIT AVAILABLE  
MAX17129/MAX17149  
Low-Cost, 6-String WLED Drivers with  
Quick-PWM Step-Up Converter  
General Description  
Features  
● Independently Controlled Dual Paths  
The MAX17129/MAX17149 are high-efficiency drivers  
for white LEDs. They are designed for small- to medium-  
sized LCDs that employ an array of LEDs as the light  
source. An internal switch step-up controller with Quick-  
PWM™ drives the LED array, which can be configured for  
up to 6 strings in parallel and either 11 LEDs (MAX17129)  
or 6 LEDs in series (MAX17149) per string. Each string  
is terminated with a ballast that achieves ±2% current-  
regulation accuracy, ensuring even LED brightness and  
provides an adjustable 10mA to 45mA full-scale LED  
current. The devices have a wide input voltage range of  
6V to 26V. The MAX17129 integrates an LDO to simplify  
applications that have a single high-voltage supply. The  
devices also feature a low-input-voltage mode for applica-  
tions that have a 3V to 5.5V supply voltage.  
● 3V to 26V Input Supply Voltage  
● Up to Six Parallel Strings of Multiple Series-  
Connected LEDs  
● Step-Up Regulator with Quick-PWM Control Scheme  
● Two-Level Selectable Switching Frequency  
● 0.25Ω Internal HV Power MOSFET (48V max)  
● Low String Feedback Voltage: 275mV at 20mA LED  
Current  
● Full-Scale LED Current Adjustable from 10mA to  
45mA  
● ±2% Current-Regulation Accuracy Between Strings  
● Support PWM and Hybrid Dimming Mode  
● 100:1 Dimming Ratio  
The devices support both PWM and hybrid dimming  
mode. In PWM dimming mode, the external PWM signal  
directly controls the brightness of LEDs. The dimming fre-  
quency ranges from 100Hz to 25kHz with 400ns minimum  
on-time. In hybrid dimming mode, the LED current ampli-  
tude can be adjusted to 25% of full-scale LED current to  
improve system efficiency when brightness is low.  
● 100Hz to 25kHz Dimming Frequency for PWM  
Dimming Mode  
● Open- and Short-LED Protection  
● Output-Overvoltage Protection  
The devices have multiple features to protect the  
controller from fault conditions. Separate voltage-  
feedback loops limit the output voltage to safe operation.  
The open- and short-LED detection shuts down the faulty  
string while keeping other strings operating normally.  
● Small 16-Pin, 3mm x 3mm Thin QFN Package  
Applications  
● Notebook, Subnotebook, and Tablet Computer  
Displays  
● Handy Terminals  
The devices feature cycle-by-cycle current limit on the  
internal switch to provide consistent operation and soft-  
start capability. If the devices are in current-limit condition,  
the step-up converter is latched off after an internal timer  
expires. A thermal-shutdown circuit provides another level  
of protection and prevents ICs from damage.  
Ordering Information  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
16 Thin QFN-EP*  
16 Thin QFN-EP*  
The ICs’ step-up controller features an internal 0.25Ω  
(typ), 48V (max) power MOSFET with lossless current  
sense and accurate cycle-by-cycle current limit. The  
Quick-PWM control architecture provides fast load-tran-  
sient response without requiring an external loop com-  
pensation component, simplifies the external circuitry, and  
saves board area. The Quick-PWM control scheme has  
constant off-time and adjustable pseudo-fixed frequency,  
which enables a wide variety of applications that can trade  
off component size for operating frequency. Low feedback  
voltage at each LED string (275mV typ at 20mA LED  
current) helps reduce power loss and improve efficiency.  
MAX17129ETE +  
MAX17149ETE+  
+Denotes lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
Simplified Operating Circuit appears at end of data sheet.  
The ICs are available in a 16-pin, thin QFN package with  
Quick-PWM is a trademark of Maxim Integrated Products, Inc.  
0.5mm lead spacing. The package is 3mm x 3mm with  
a
maximum thickness of 0.8mm for ultra-thin LCD panel design.  
19-5676; Rev 2; 11/14  
1234567...21

中文翻译

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