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 >> LM3556
LM3556技术文档下载：
LM3556技术文档产品手册下载
LM3556 - 产品图解：
LM3556-具有高侧的 LM3556 1.5A 同步升压 LED 闪存驱动器
LM3556-相机闪光灯LED驱动器-LED驱动器-电源管理
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 - LM3556介绍

LM3556 - 具有高侧的 LM3556 1.5A 同步升压 LED 闪存驱动器

LM3556是TI德州仪器公司的一款相机闪光灯LED驱动器产品，LM3556是具有高侧的 LM3556 1.5A 同步升压 LED 闪存驱动器，本站介绍了LM3556的封装应用图解、特点和优点、功能等，并给出了与LM3556相关的TI元器件型号供参考。

LM3556 - 具有高侧的 LM3556 1.5A 同步升压 LED 闪存驱动器 - 相机闪光灯LED驱动器 - LED驱动器 - 德州仪器

产品特性
  • Grounded Cathode LED Operation for Improved Thermal Management
  • 1.5-A High-Side Current Source for Single LED
  • Accurate and Programmable LED Current from 46.9 mA to 1.5 A
  • > 85% Efficiency in Torch Mode (at 100 mA) and Flash Mode (at 1 A to 1.5 A)
  • Small Solution Size: < 20 mm2
  • LED Thermal Sensing and Current Scale-Back
  • Soft-Start Operation for Battery Protection
  • Hardware Enable Pin
  • Hardware Torch Enable
  • Hardware Strobe Enable
  • Synchronization Input for RF Power Amplifier Pulse Events
  • VIN Flash Monitor Optimization
  • 400-kHz I2C-Compatible Interface
  • I2C-Compatible Programmable NTC Trip Point
  • 0.4-mm Pitch, 16-Pin DSBGA Package
产品应用

    Camera Phone LED Flash

产品说明

The LM3556 is a 4-MHz fixed-frequency synchronous boost converter plus 1.5-A constant current driver for a high-current white LED. The high-side current source allows for grounded cathode LED operation providing flash current up to 1.5 A. An adaptive regulation method ensures the current source remains in regulation and maximizes efficiency.

The LM3556 is controlled via an I2C-compatible interface. Features include: a hardware flash enable (STROBE) allowing a logic input to trigger the flash pulse, a hardware torch enable (TORCH) for Movie Mode or flashlight functions, a TX input which forces the flash pulse into a low-current Torch Mode allowing for synchronization to RF power amplifier events or other high-current conditions, and an integrated comparator designed to monitor an NTC thermistor and provide an interrupt to the LED current. With a fast 1-μs transition from 0 mA to 46.9 mA, the TORCH input pin can be used to develop custom LED current waveforms.

The 4-MHz switching frequency, overvoltage protection and adjustable current limit allow for the use of tiny, low-profile inductors and 10-µF ceramic capacitors. The device is operates over a −40°C to +85°C temperature range.

产品器件信息
PART NUMBERPACKAGEBODY SIZE (MAX)
LM3556DSBGA (16)1.69 mm × 1.64 mm
下面可能是您感兴趣的TI德州仪器公司相机闪光灯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