AD8240YRMZ-RL

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AD8240YRMZ-RL概述

LED Driver 6Segment 12V/15V/18V/24V 8Pin MSOP T/R

Product Details

The AD8240 driver/monitor, in combination with an external transistor, supplies a constant 12 V to drive LED lamps. This allows cost-effective LED lamp monitoring and short-circuit protection. The output is regulated at 12 V when the supply voltage is between 12.5 V and 27 V.

A CMOS compatible, level-dependent, digital input can be used for PWM control of the LED brightness. VO is turned on when the PWM input is high and turned off when the input is low. The AD8240 is designed to work with a PWM frequency up to 500 Hz, and a typical PWM range from 5% to 95%.

Open LED detection is accomplished by measuring the change in LED lamp current caused by an open LEDs through the use of an internal high-side current-sense amplifier that amplifies the voltage across an external current shunt. The voltage across the shunt resistor is amplified to a level that can be measured by a microcontroller A/D converter or a comparator. The ability to measure the change in LED lamp current is the key benefit of constant-voltage LED lamp driving.

The output is current-limited by latching off the output voltage when the current reaches a preset level. The current limit is set by selecting the value of the external current shunt that causes the output of the sense amplifier to slightly exceed the 5 V reference level when the current exceeds a maximum level. When the sense amplifier output exceeds 5 V, it trips an internal comparator that causes the driver to latch off the output voltage. The latch is reset during the next PWM cycle. The overcurrent condition can also be detected by a microcontroller or external comparator by measuring the sense amplifier output.

### Features and Benefits

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PWM input for LED Brightness Control
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Open LED Detection
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Latch-off Overcurrent Protection
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Constant Voltage Regulated Output
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Regulated Voltage Range: 12.5V to 27V
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Supply range: 9V to 27 V
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Operating current: 300 µA
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Shutdown current: 10 µA
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Temperature range -40°C to +125°C
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8-lead MSOP package
AD8240YRMZ-RL中文资料参数规格
技术参数

频率 500 Hz

电源电压DC 27.0V max

输出接口数 1

输出电压 12 V

供电电流 360 µA

工作温度Max 125 ℃

工作温度Min -40 ℃

电源电压 9V ~ 27V

电源电压Max 27 V

电源电压Min 9 V

输入电压 9V ~ 27V

封装参数

安装方式 Surface Mount

引脚数 8

封装 MSOP-8

外形尺寸

宽度 3 mm

高度 0.85 mm

封装 MSOP-8

物理参数

工作温度 -40℃ ~ 125℃ TA

其他

产品生命周期 Active

包装方式 Tape & Reel TR

制造应用 汽车级

符合标准

RoHS标准 RoHS Compliant

含铅标准 Contains Lead

数据手册

AD8240YRMZ-RL引脚图与封装图
AD8240YRMZ-RL引脚图
AD8240YRMZ-RL封装图
AD8240YRMZ-RL电路图
AD8240YRMZ-RL封装焊盘图
在线购买AD8240YRMZ-RL
型号: AD8240YRMZ-RL
制造商: ADI 亚德诺
描述:LED Driver 6Segment 12V/15V/18V/24V 8Pin MSOP T/R
替代型号AD8240YRMZ-RL
型号/品牌 代替类型 替代型号对比

AD8240YRMZ-RL

ADI 亚德诺

当前型号

当前型号

AD8240YRM

亚德诺

完全替代

AD8240YRMZ-RL和AD8240YRM的区别

AD8240YRMZ

亚德诺

类似代替

AD8240YRMZ-RL和AD8240YRMZ的区别

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