TI公司，TI官网，TI代理商
TI(德州仪器)|TI产品型号搜索：
专营TI（德州仪器）元器件，强大的现货交付能力，解决您的采购难题
全流程提供TI（德州仪器）现货供应链服务
当前位置：TI代理 > > TI芯片 >> LM3492-Q1
LM3492-Q1技术文档下载：
LM3492-Q1技术文档产品手册下载
LM3492-Q1 - 产品图解：
LM3492-Q1-具有升压转换器和快速电流稳压器的双通道可单独调光 LED 驱动器
TI芯片：
承诺原装正品
专营TI德州仪器，真正优化您的供应链
TI产品 - LM3492-Q1介绍

LM3492-Q1 - 具有升压转换器和快速电流稳压器的双通道可单独调光 LED 驱动器

LM3492-Q1是TI德州仪器公司的一款汽车类LED驱动器产品，LM3492-Q1是具有升压转换器和快速电流稳压器的双通道可单独调光 LED 驱动器，本站介绍了LM3492-Q1的封装应用图解、特点和优点、功能等，并给出了与LM3492-Q1相关的TI元器件型号供参考。

LM3492-Q1 - 具有升压转换器和快速电流稳压器的双通道可单独调光 LED 驱动器 - 汽车类LED驱动器 - LED驱动器 - 德州仪器

产品描述

The LM3492 integrates a boost converter and a two-channel current regulator to implement a high efficient and cost effective LED driver for driving two individually dimmable LED strings with a maximum power of 15W and an output voltage of up to 65V. The boost converter employs a proprietary Projected-On-Time control method to give a fast transient response with no compensation required, and a nearly constant switching frequency programmable from 200 kHz to 1 MHz. The application circuit is stable with ceramic capacitors and produces no audible noise on dimming. The programmable peak current limit and soft-start features reduce current surges at startup, and an integrated 190 m?, 3.9A N-Channel MOSFET switch minimizes the solution size.

The fast slew rate current regulator allows high frequency and narrow pulse width dimming signals to achieve a very high contrast ratio of 1000:1 at a dimming frequency of more than 3 kHz. The LED current is programmable from 50 mA to 200 mA by a single resistor.

To maximize the efficiency, Dynamic Headroom Control (DHC) automatically adjusts the output voltage to a minimum. DHC also facilitates a single BOM for different number of LED in a string, which is required for backlight panels of different size, thereby reducing overall development time and cost. The LM3492 comes with a versatile COMM pin which serves as a bi-directional I/O pin interfacing with an external MCU for the following functions: power-good, over-temperature, IOUT over- and under-voltage indications, switching frequency tuning, and channel 1 disabling. Other supervisory functions of the LM3492 include precise enable, VCC under-voltage lock-out, current regulator over-power protection, and thermal shutdown protection. The LM3492 is available in the thermally enhanced 20-pin HTSSOP package.

产品特性

  • Boost Converter:
    • LM3492Q is an Automotive Grade Product that is AEC Q100 Grade 1 Qualified
    • Very Wide Input Voltage Ranged from 4.5V-65V
    • Programmable Soft-start
    • No Loop Compensation Required
    • Stable with Ceramic and Other low ESR Capacitors with no Audible Noise
    • Nearly Constant Switching Frequency Programmable from 200 kHz to 1 MHz
  • Current Regulators:
    • Programmable LED Current from 50 mA to 200 mA
    • 1000:1 Contrast Ratio at a Dimming Frequency of more than 3 kHz, Minimum LED Current Pulse width is 300 ns
    • Two Individual Dimmable LED strings up to 65V, total 15W (typically 28 LEDs at 150 mA)
    • Dynamic Headroom Control maximizes efficiency
    • Over-Power protection
    • ±3% current accuracy
  • Supervisory Functions:
    • Precision enable
    • COMM I/O pin for diagnostic and commands
    • Thermal shutdown protection
    • Thermally enhanced 20-Pin HTSSOP package

下面可能是您感兴趣的TI德州仪器公司汽车类LED驱动器元器件
节约时间成本，提高采购效率，TI官网授权代理
TI公司|TI德州仪器|德州仪器TI公司代理商|TI芯片代理商
TI公司产品现货专家，订购TI公司产品不限最低起订量，TI芯片大陆现货即时发货，香港库存3-5天发货，海外库存7-10天发货
寻找全球TI代理商现货货源 - TI公司（德州仪器）电子元件在线订购