The LP8501 is an LED driver with 9 outputs, designed to produce versatile lighting effects for mobile devices. The device is equipped with an internal program memory, which allows operation without processor control. Internal program memory is used by three independent program execution engines to produce user-defined lighting effects for the outputs.

A high-efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The excellent efficiency over a wide operating range is achieved by autonomously selecting the best charge pump gain based on LED forward voltage requirements. The LP8501 is able to automatically enter power-save mode when LED outputs are not active, thus lowering idle current consumption down to 10 µA (typ.)

The device has a flexible General Purpose Output (GPO) (which can be used, for example, as a digital control pin for other devices), an INT pin (interrupt function), which can be used to notify the processor, and a Trigger input interface, which allows program execution start without I²C write.

The device requires only four small and low-cost ceramic capacitors. The LP8501 is available in a tiny 25-bump 2.26 mm x 2.26 mm x 0.60 mm DSBGA package (0.4 mm pitch).

• Three Independent Program Execution Engines for User-defined Programs with Large SRAM Memory for Storing Lighting Programs
• 9 Programmable Source (High Side) Driver Outputs with 25.5 mA Full-Scale Current, 8-bit Current Setting Resolution and 12-Bit PWM Control Resolution
• Flexible Grouping Possibility for All 9 Outputs Including GPO into Three Groups with Group PWM and Fade-In/ Fade-Out Controls
• Built-in LED Test
• Adaptive Charge Pump with 1x and 1.5x Gain Provides up to 95% LED Drive Efficiency, with Soft Start and Overcurrent/Short Circuit Protection
• Automatic Power Save Mode; IVDD = 10 μA (typ.)
• Two Wire, I2C-Compatible, Control Interface
• Small Application Circuit
• Pin-configured LED Powering for LEDs 1 to 6 and for LEDs 7 to 9
• Solution Area <18 mm2

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• Number of channels (#)
• 9
• LED current per channel (mA)
• 25.5
• LED configuration
• Parallel
• Program memory
• Yes
• Programmable ramp control
• Yes
• Vin (Min) (V)
• 2.7
• Vin (Max) (V)
• 5.5
• Iout (Max) (A)
• 0.225
• Features
• Analog/PWM mixed dimming, Constant current, Current control, I2C control, Programmable lighting engines
• Iq (Typ) (mA)
• 0.6
• Shutdown current (Typ) (uA)
• 0.2
• Operating temperature range (C)
• -30 to 85
• Rating
• Catalog

LP8501的完整型号有：LP8501TME/NOPB、LP8501TMX/NOPB，以下是这些产品的关键参数及官网采购报价：

LP8501TME/NOPB，工作温度：-30 to 85，封装：DSBGA (YFQ)-25，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LP8501TME/NOPB的批量USD价格：.871（1000+）

LP8501TMX/NOPB，工作温度：-30 to 85，封装：DSBGA (YFQ)-25，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LP8501TMX/NOPB的批量USD价格：.726（1000+）

LP8501SW-LINUX — 用于 LP8501 的 Linux 驱动程序

The Linux driver supports the LP8501 9 channel 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:

• lp8501

Linux Source Files

The files (...)

LP8501 Evaluation Software

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