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LM8502

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带 1.2A 双高侧 LED 闪光灯驱动器的智能照明管理单元

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LM8502

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产品详情

Number of channels 12 LED current per channel (mA) 25.5 LED configuration Parallel Program memory Yes Topology Boost Programmable ramp control Yes Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 1.4 Features I2C control Iq (typ) (mA) 0.3 Shutdown current (ISD) (typ) (µA) 0.3 Operating temperature range (°C) -30 to 85 Rating Catalog
Number of channels 12 LED current per channel (mA) 25.5 LED configuration Parallel Program memory Yes Topology Boost Programmable ramp control Yes Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 1.4 Features I2C control Iq (typ) (mA) 0.3 Shutdown current (ISD) (typ) (µA) 0.3 Operating temperature range (°C) -30 to 85 Rating Catalog
DSBGA (YFQ) 30 5.71999999999999912 mm² 2.5999999999999996 x 2.2
  • 10 Programmable Low-Side Current Sinks with Flexible Powering from VOUT or External Voltage Source
  • 1.2A Dual Flash LED Driver with Flash, Torch and Voltage modes
  • Ambient Light Sensing Capability with Two Inputs
  • Up to 4000:1 dimming ratio for LED outputs
  • Flash LED Thermal Sensing and Current Scaleback
  • Hardware Flash, Torch Enable and Dual Synchronization Inputs for RF Power Amplifier Pulse Events
  • Haptic Feedback Motor Driver
  • Two Lighting Engines for User-Defined Lighting Sequences with 48 * 16 Bits of SRAM Memory
  • External Clock Pin for Power Save
  • External PWM Control Capability Enabling for Example Dynamic Backlight Control
  • Fast I2C-Compatible Interface
  • General Purpose ADC for Measuring, i.e., LED Output Voltages
  • Ultra-Small Solution Area < 32 mm2
  • 30-Bump (2.42 x 2.77 mm x 0.6 mm) 0.4 Pitch DSBGA Package
  • 10 Programmable Low-Side Current Sinks with Flexible Powering from VOUT or External Voltage Source
  • 1.2A Dual Flash LED Driver with Flash, Torch and Voltage modes
  • Ambient Light Sensing Capability with Two Inputs
  • Up to 4000:1 dimming ratio for LED outputs
  • Flash LED Thermal Sensing and Current Scaleback
  • Hardware Flash, Torch Enable and Dual Synchronization Inputs for RF Power Amplifier Pulse Events
  • Haptic Feedback Motor Driver
  • Two Lighting Engines for User-Defined Lighting Sequences with 48 * 16 Bits of SRAM Memory
  • External Clock Pin for Power Save
  • External PWM Control Capability Enabling for Example Dynamic Backlight Control
  • Fast I2C-Compatible Interface
  • General Purpose ADC for Measuring, i.e., LED Output Voltages
  • Ultra-Small Solution Area < 32 mm2
  • 30-Bump (2.42 x 2.77 mm x 0.6 mm) 0.4 Pitch DSBGA Package

The LM8502 is a versatile LED driver suitable for multiple applications. It includes a 2MHz, fixed-frequency synchronous boost converter, 10 current sink LED outputs, 2 outputs for flash or haptic applications, ambient light sensing and PWM input.

The 10 current sink LED outputs offer individual current control through an I2C-compatible interface. Current can be accurately controlled with a full-scale setting and 8-bit current control. The LM8502 also enables LED control with group faders and lighting engines. Group faders enable single I2C register writes for multiple LED outputs with fading, whereas lighting engines with SRAM memory enable engine-driven lighting sequences. Each LED output can be powered either from VOUT or an external voltage supply.

The flash function is capable of driving 2 LEDs, each having 600 mA maximum current, or a single LED up to a 1.2A maximum current. A hardware flash enable provides a direct interface to trigger the flash pulse. Dual TX inputs allow the flash to be synchronized with the RF power system to prevent excessive current draw from the system power supply. The LM8502 also offers LED thermal sensing as a safety procedure for flash and separate indicator LED.

The LM8502 has two inputs for Ambient Light Sensing — together with the PWM input they enable Dynamic Backlight Control. The LM8502 may also be used for haptic motor driving instead of flash. When the device is idle, featured Power-save mode and use of an external clock reduce current consumption significantly.

The LM8502 is a versatile LED driver suitable for multiple applications. It includes a 2MHz, fixed-frequency synchronous boost converter, 10 current sink LED outputs, 2 outputs for flash or haptic applications, ambient light sensing and PWM input.

The 10 current sink LED outputs offer individual current control through an I2C-compatible interface. Current can be accurately controlled with a full-scale setting and 8-bit current control. The LM8502 also enables LED control with group faders and lighting engines. Group faders enable single I2C register writes for multiple LED outputs with fading, whereas lighting engines with SRAM memory enable engine-driven lighting sequences. Each LED output can be powered either from VOUT or an external voltage supply.

The flash function is capable of driving 2 LEDs, each having 600 mA maximum current, or a single LED up to a 1.2A maximum current. A hardware flash enable provides a direct interface to trigger the flash pulse. Dual TX inputs allow the flash to be synchronized with the RF power system to prevent excessive current draw from the system power supply. The LM8502 also offers LED thermal sensing as a safety procedure for flash and separate indicator LED.

The LM8502 has two inputs for Ambient Light Sensing — together with the PWM input they enable Dynamic Backlight Control. The LM8502 may also be used for haptic motor driving instead of flash. When the device is idle, featured Power-save mode and use of an external clock reduce current consumption significantly.
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类型 标题 下载最新的英语版本 日期
* 数据表 LM8502 Intelligent LMU Fusing 1.2A Dual HS Flash LED Drvr w/10-Outpt LS LED Drvr 数据表 (Rev. D) 2013年 2月 20日
白皮书 常见 LED 功能和 LED 驱动器设计注意事项 英语版 2020年 9月 21日
应用手册 How to Select a RGB LED Driver 2019年 8月 8日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日

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订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
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  • 封装厂地点

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