TLC6984集成电路（IC）的LED驱动器规格书PDF中文资料

TLC6984属于集成电路（IC）的LED驱动器。由德州仪器制造生产的TLC6984LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。

1 Features

• Separated VCC and VR/G/B power supply

– VCC voltage range: 2.5 V – 5.5 V

– VR/G/B voltage range: 2.5 V – 5.5 V

• 48 current source channels from 0.2 mA to 20 mA

– Channel-to-channel accuracy: ±0.5 (typ.),

±2 (max.); device-to-device accuracy: ±0.5

(typ.), ±2 (max.)

– Low knee voltage: 0.26 V (max.) when IOUT = 5

mA

– 3-bits (8 steps) global brightness control

– 8-bits (256 steps) color brightness control

– Maximum 16-bits (65536 steps) PWM

grayscale control

• 16 scan line switches with 190-mΩ RDS(ON)

• Ultra low power consumption

– Independent VCC down to 2.5 V

– Lowest ICC down to 3.6 mA with 50-MHz GCLK

– Intelligent power saving mode with ICC down to

0.9mA

• Built-in SRAM to support 1 – 64 multiplexing

– Single device with 16 multiplexing to support 48

× 16 LEDs or 16 × 16 RGB pixels

– Dual devices stackable with 32 multiplexing to

support 96 × 32 LEDs or 32 × 32 RGB pixels

– Three devices stackable with 48 multiplexing to

support 144 × 48 LEDs or 48 × 48 RGB pixels

– Four devices stackable with 64 multiplexing to

support 192 × 64 LEDs or 64 × 64 RGB pixels

• High speed and low EMI Continuous Clock Series

Interface (CCSI)

– Only three wires: SCLK / SIN / SOUT

– External 25-MHz (max.) SCLK with dual-edge

transmission mechanism (internal 50 MHz)

– Internal frequency multiplier to support high

GCLK frequency

• Optimized display performance

– Programmable scan line sequence

– Upside and downside ghosting removal

– Low grayscale enhancement

– LED open, short, and weak short detection and

removal

2 Applications

• Narrow Pixel Pitch (NPP) LED display

• Mini and micro-LED products

3 Description

With the pixel density getting higher in narrow pixel

pitch LED display or mini and micro-LED products,

there are urgent demands for LED drivers to address

those critical challenges. These challenges include

ultra high integration to meet the strict board space

limitation, ultra low power to minimize the system

level power dissipation, new interface to enable high

data refresh rate with low EMI impact, and excellent

display performance to serve the growing needs of

higher display quality.