The LM3530 current mode boost converter supplies the power and controls the current in up to 11 series white LEDs. The 839-mA current limit and 2.7-V to 5.5-V input voltage range make the device a versatile backlight power source ideal for operation in portable applications.

The LED current is adjustable from 0 mA to 29.5 mA via an I²C-compatible interface. The 127 different current steps and 8 different maximum LED current levels give over 1000 programmable LED current levels. Additionally, PWM brightness control is possible through an external logic level input.

The device also features two Ambient Light Sensor inputs. These are designed to monitor analog output ambient light sensors and provide programmable adjustment of the LED current with changes in ambient light. Each ambient light sensor input has independently programmable internal voltage setting resistors which can be made high impedance to reduce power during shutdown. The 500-kHz switching frequency allows for high converter efficiency over a wide output voltage range accommodating from 2 to 11 series LEDs. Finally, the support of Content Adjusted Backlighting maximizes battery life while maintaining display image quality.

The LM3530 operates over the −40°C to 85°C temperature range.

• Drives up to 11 LEDs in series
• 1000:1 Dimming Ratio
• 90% Efficient
• Programmable Dual Ambient Light Sensor Inputs with Internal ALS Voltage Setting Resistors
• I2C Programmable Logarithmic or Linear Brightness Control
• External PWM Input for Simple Brightness Adjustment
• True Shutdown Isolation for LEDs and Ambient Light Sensors
• Internal Soft-Start Limits Inrush Current
• Wide 2.7-V to 5.5-V Input Voltage Range
• 40-V and 25-V Overvoltage Protection Options
• 500-kHz Fixed Frequency Operation
• 839-mA Peak Current Limit

• Number of channels (#)
• 1
• Vin (Min) (V)
• 2.7
• Vin (Max) (V)
• 5.5
• Vout (Min) (V)
• 0
• Vout (Max) (V)
• 40
• Type
• Inductive
• Switching frequency (Max) (kHz)
• 500
• LED current per channel (mA)
• 30
• Peak efficiency (%)
• 88
• Topology
• Boost
• Features
• I2C Control
• Operating temperature range (C)
• -30 to 85

LM3530的完整型号有：LM3530TME-40/NOPB、LM3530TMX-40/NOPB、LM3530UME-25A/NOPB、LM3530UME-40/NOPB、LM3530UME-40B/NOPB、LM3530UMX-25A/NOPB、LM3530UMX-40/NOPB、LM3530UMX-40B/NOPB，以下是这些产品的关键参数及官网采购报价：

LM3530TME-40/NOPB，工作温度：PropertyValue，封装：DSBGA (YFQ)-12，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LM3530TME-40/NOPB的批量USD价格：.522（1000+）

LM3530TMX-40/NOPB，工作温度：PropertyValue，封装：DSBGA (YFQ)-12，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LM3530TMX-40/NOPB的批量USD价格：.435（1000+）

LM3530UME-25A/NOPB，工作温度：-30 to 85，封装：DSBGA (YFZ)-12，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LM3530UME-25A/NOPB的批量USD价格：.522（1000+）

LM3530UME-40/NOPB，工作温度：-30 to 85，封装：DSBGA (YFZ)-12，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LM3530UME-40/NOPB的批量USD价格：.522（1000+）

LM3530UME-40B/NOPB，工作温度：PropertyValue，封装：DSBGA (YFZ)-12，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LM3530UME-40B/NOPB的批量USD价格：.522（1000+）

LM3530UMX-25A/NOPB，工作温度：-30 to 85，封装：DSBGA (YFZ)-12，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LM3530UMX-25A/NOPB的批量USD价格：.435（1000+）

LM3530UMX-40/NOPB，工作温度：-30 to 85，封装：DSBGA (YFZ)-12，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LM3530UMX-40/NOPB的批量USD价格：.435（1000+）

LM3530UMX-40B/NOPB，工作温度：PropertyValue，封装：DSBGA (YFZ)-12，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LM3530UMX-40B/NOPB的批量USD价格：.435（1000+）

LM3530SW-LINUX — LM3530SW-LINUX

The Linux driver supports the LM3530 White LED Driver. The Linux driver supports communication through the I2C bus and interfaces with the LED sub-system.

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

• lm3530

Linux Source Files

The files (...)

LM3530 Graphical User Interface

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)