AIC3643的特性及应用
aic3643的特性及应用
built-in ovp white led step-up converter download complete datasheet pdf
features
built-in open circuit protection
over voltage protection
efficiency up to 83% at vin=4.2v, 3leds, iled=20ma
1.2mhz fixed switching frequency
drives up to 5leds in series
2.5v to 5.5v input voltage
low supply current: 150冚a
matches led current
requires tiny inductor and capacitors
tsot-23-6, and sot-23-6 packages
applications
cellular phones
pdas
dscs
handheld devices
white led display backlighting
description
aic3643 is a current-mode pulse-width-modulation (pwm), step-up dc/dc converter designed to drive white leds with a constant current to provide backlight in hand-held devices. series connection of leds provides identical led currents resulting in uniform brightness. this configuration eliminates the need of ballast resistors. the built-in open load protection prevents the damage resulting from an open circuit condition. also low 100mv feedback voltage minimizes power loss in the current setting resistor for better efficiency.
aic3643 is a step-up pwm converter, which includes an internal n-channel mosfet switch for high efficiency. the high switching frequency, 1.2mhz, allows the use of tiny external components.
aic3643 is available in a space-saving tsot-23-6, and sot-23-6 packages.
aic3643 datasheet,pdf
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built-in ovp white led step-up converter download complete datasheet pdf
features
built-in open circuit protection
over voltage protection
efficiency up to 83% at vin=4.2v, 3leds, iled=20ma
1.2mhz fixed switching frequency
drives up to 5leds in series
2.5v to 5.5v input voltage
low supply current: 150冚a
matches led current
requires tiny inductor and capacitors
tsot-23-6, and sot-23-6 packages
applications
cellular phones
pdas
dscs
handheld devices
white led display backlighting
description
aic3643 is a current-mode pulse-width-modulation (pwm), step-up dc/dc converter designed to drive white leds with a constant current to provide backlight in hand-held devices. series connection of leds provides identical led currents resulting in uniform brightness. this configuration eliminates the need of ballast resistors. the built-in open load protection prevents the damage resulting from an open circuit condition. also low 100mv feedback voltage minimizes power loss in the current setting resistor for better efficiency.
aic3643 is a step-up pwm converter, which includes an internal n-channel mosfet switch for high efficiency. the high switching frequency, 1.2mhz, allows the use of tiny external components.
aic3643 is available in a space-saving tsot-23-6, and sot-23-6 packages.
aic3643 datasheet,pdf
iCAN2023：应用TDK产品的优秀项目展示⑥：可视化大棚&智慧降尘
小米第三季度营收和利润均超出市场预期，研发投入也创下季度新高
Pedro Domingos教授的研究论文汇集机器学习研究人员的经验教训
VK1072B/C/D LCD驱动器概述及特点
多功能锂离子电池测试的解决方案
AIC3643的特性及应用
FPGA约束的详细介绍
定氮仪是实验室比较重要的理化分析仪器之一
流延膜表面缺陷检测系统的原理、参数及功能
MIKROE推出新开源软硬件解决方案使数百个Click板能够热插拔到Linux开发环境中
汽车发电机整流电路原理
Intersil推出业内首款专门针对汽车应用的全高清LCD视频处理器
银行和政务终端领域的安全之选：国产工控机引领硬件革新
完美白色全屏，美炸了！谷歌Pixel 2代外形曝光
联发科PA 射频放大芯片累计销售超过22亿颗
国产汽车巨头，裁员95%！
SPI/I2C/USART通讯方式的特点
小米MIX2怎么样？小米MIX2评测：小米MIX2真机上手优缺点分析
中国芯支撑云存储 国产化替代切实可行
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