ANX6934AAQ，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.
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