TLC59291 - 具有 7 位亮度控制的 8/16 通道、恒流 LED 驱动器

TLC59291是TI德州仪器公司的一款标牌/线性产品，TLC59291是具有 7 位亮度控制的 8/16 通道、恒流 LED 驱动器，本站介绍了TLC59291的封装应用图解、特点和优点、功能等，并给出了与TLC59291相关的TI元器件型号供参考。

TLC59291 - 具有 7 位亮度控制的 8/16 通道、恒流 LED 驱动器 - 标牌/线性 - LED驱动器 - 德州仪器

产品特性

8/16 Constant-Current Sink Output Channels with On/Off Control
Current Capability:
- 1 - 40 mA (VCC ≤ 3.6 V)
- 1 - 50 mA (VCC > 3.6 V)
Global Brightness Control: 7-Bit (128 Steps)
Power-Supply Voltage Range: 3 V to 5.5 V
LED Power-Supply Voltage: Up to 10 V
Constant-Current Accuracy:
- Channel-to-Channel = ±1% (Typical)
- Device-to-Device = ±2% (Typical)
Low Quiescent Current
SOUT can be Configured for 8-Channel or 16-Channel Output
LED Open Detection (LOD)/LED Short Detection (LSD) with Invisible Detection Mode (IDM)
Output Leakage Detection (OLD) Detects 3 µA Leak
Pre-Thermal Warning (PTW)
Thermal Shutdown (TSD)
Current Reference Terminal Short Flag (ISF)
Power-Save Mode with 10-µA Consumption
Undervoltage Lockout Sets the Default Data
2-ns Delayed Switching Between Each Channel Minimizes Inrush Current
Operating Temperature: –40°C to 85°C

产品应用

Industry LED Indicator
Illumination
LED Video Display

产品说明

The TLC59291 is a 8/16-channel constant current sink LED driver. Each channel can be turned on-off by writing data to an internal register. The constant current value of all 16 channels is set by a single external resistor and 128 steps for the global brightness control (BC).

The TLC59291 has six type error flags: LED open detection (LOD), LED short detection (LSD), output leak detection (OLD), reference terminal short detection (ISF), Pre thermal warning (PTW) and thermal error flag (TEF). In addition, the LOD and LSD functions have invisible detection mode (IDM) that can detect those errors even when the output is off. The error detection results can be read via a serial interface port.

The TLC59291 has low quiescent current in normal mode, it also has a power-save mode that sets the total current consumption to 10 uA (typical) when all outputs are off.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TLC59291	VQFN (24)	4.00mm x 4.00mm

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