ANX6934AAQX,8通道LED驱动器，全新原装，门市自取或当天发货。

ANX6934

8通道LED驱动器

特征

2.7V至24V的宽输入范围

集成2.8A/40V升压FET网关

封装证明和软启动

晶体电流接收器

通道的电流高达60mA

从100Hz到30kHz的PWM调光

2.5%电流匹配

3%电流精度

保护：

LED串开路/短路检测

过电压保护

过流保护

超温保护

薄3x3 mm 16WQFN封装芯

符合Rohs和10%（Pb）-

应用

笔记本电脑/笔记本电脑/平板电脑/Ultrabook

车载导航器/娱乐打开

可变功能灯

ANX6934AAQX WQFN-16L，3x3

说明：

ANX6934是一种高度的白色LED专为薄膜分析的驱动器（TFT）显示器（LCD）背光。

该芯片可以驱动多达8串LED最多可串串10个LED。宽的串输入电压范围为2.7V至24V，ANX6934非常适合应用，从单芯锂电池平板电脑到，全尺寸笔记本电脑。ANX6934 具有组合的高效率

电流模式升压。八个

集成电流接收器提供高

精密电流调节和匹配

LED电流高达60mA。反馈电路

感应LED电流接收器电压和

补偿LED的不均匀性

LED串上累积的正向电压。

为了将功率输出，输出电压

通过监控

LED字符串。未使用的LED通道可以

通过将通道连接至禁止禁止。

ANX6934通过以下方式控制LED变光

脉宽调制（PWM）方法。

LED 电流打开和关闭，以响应

词汇的占空比和频率

PWM。

ANX6934 具有多种保护功能

功能包括过电流保护（OCP），

超保护（OTP），温度

过压保护（OVP）和LED串

开路和短路检测。

如果启用，软启动将启用功能逐步输出电压，避免电压过冲和浪涌电流。如果打开一个字符串，

LED开路检测电路检测到此故障所有其他电流接收器都可以继续正常工作。

ANX6934

8 – Channel LED Driver

FEATURES 

Wide input range from 2.7V to 24V 

Integrated 2.8A/40V boost converter FET 

Built-in loop compensation and_soft-start 

Eight programmable current sinks 

Current up to 60mA per channel 

PWM dimming from 100Hz to 30kHz 

2.5%_current matching 

3%_current accuracy 

Protection: 

LED string open/short detection 

Adjustable overvoltage protection 

Over-current protection 

Over-temperature protection 

Thin 3x3 mm 16-lead WQFN package 

Rohs compliant and_100%_Lead(Pb)-

Free/Green

APPLICATIONS 

Notebook/Ultrabook/Tablet PC Display 

Backlight 

 Car Navigator/Entertainment Display 

Backlight 

 Flash light or utility light

ANX6934AAQX WQFN-16L, 3x3

DESCRIPTION 

The ANX6934 is a highly compact white LED 

driver especially optimized for thin-film transistor 

(TFT) liquid crystal displays (LCDs) backlight. 

The chip can drive up to eight strings of LEDs 

and_up to ten LEDs in series per string. Wide 

input voltage range from 2.7V to 24V makes 

ANX6934 well suited for applications ranging 

from a one-cell lithium-ion battery tablet PC to a 

full-size notebook PC. 

The ANX6934 offers a built-in high efficiency 

current mode boost converter. The eight 

integrated current sink regulators provide high 

precision current regulation and_matching for 

LED currents up to 60mA. The feedback loop 

senses LED current sink voltages and_

compensates for the non-uniformity of the LED 

forward voltage accumulated on the LED strings. 

To minimize the power loss, the output voltage 

of the boost converter is automatically adjusted 

by monitoring the highest forward voltage of the 

LED strings. An unused LED channel can be 

disabled by connecting the channel to ground. 

The ANX6934 controls LED dimming through 

the pulse-width-modulation (PWM) method. The 

LED current is turned on and_off in response to 

the duty cycle and_frequency applied at the 

PWM pin. 

The ANX6934 features several protection 

functions including overcurrent protection (OCP), 

overtemperature protection (OTP), adjustable 

overvoltage protection (OVP), and_LED string 

open and_short detection. Once the device is 

turned on, the soft-start function raises the 

output voltage gradually to avoid voltage overshoot and_inrush current. If one string opens, 

the LED open detection circuit detects this fault 

and_excludes this current sink from the regulation loop. All other strings continue to work normally.