TLC5940 - 带有 EEprom 点校正与灰度 PWM 控制的 16 通道 LED 驱动器

TLC5940是TI德州仪器公司的一款标牌/线性产品，TLC5940是带有 EEprom 点校正与灰度 PWM 控制的 16 通道 LED 驱动器，本站介绍了TLC5940的封装应用图解、特点和优点、功能等，并给出了与TLC5940相关的TI元器件型号供参考。

TLC5940 - 带有 EEprom 点校正与灰度 PWM 控制的 16 通道 LED 驱动器 - 标牌/线性 - LED驱动器 - 德州仪器

产品特性

16 Channels
12 bit (4096 Steps) Grayscale PWM Control
Dot Correction
- 6 bit (64 Steps)
- Storable in Integrated EEPROM
Drive Capability (Constant-Current Sink)
- 0 mA to 60 mA (VCC < 3.6 V)
- 0 mA to 120 mA (VCC > 3.6 V)
LED Power Supply Voltage up to 17 V
VCC = 3 V to 5.5 V
Serial Data Interface
Controlled In-Rush Current
30 MHz Data Transfer Rate
CMOS Level I/O
Error Information
- LOD: LED Open Detection
- TEF: Thermal Error Flag

产品应用

Monocolor, Multicolor, Full-Color LED Displays
LED Signboards
Display Backlighting
General, High-Current LED Drive

产品说明

The TLC5940 is a 16-channel, constant-current sink LED driver. Each channel has an individually adjustable 4096-step grayscale PWM brightness control and a 64-step, constant-current sink (dot correction). The dot correction adjusts the brightness variations between LED channels and other LED drivers. The dot correction data is stored in an integrated EEPROM. Both grayscale control and dot correction are accessible through a serial interface. A single external resistor sets the maximum current value of all 16 channels.

The TLC5940 features two error information circuits. The LED open detection (LOD) indicates a broken or disconnected LED at an output terminal. The thermal error flag (TEF) indicates an overtemperature condition.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TLC5940	PDIP (28)	35.69 mm × 6.73 mm
	HTSSOP (28)	9.70 mm × 4.40 mm
	VQFN (32)	5.00 mm × 5.00 mm

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