TLC59291 Series

8/16-channel, constant current LED driver with low Quiescent current and Full self-diagnosis

Catalog

8/16-channel, constant current LED driver with low Quiescent current and Full self-diagnosis

Part	Voltage - Output	Topology	Supplier Device Package	Internal Switch(s)	Type	Operating Temperature [Max]	Operating Temperature [Min]	Current - Output / Channel	Voltage - Supply (Min) [Min]	Mounting Type	Number of Outputs	Voltage - Supply (Max)	Frequency	Package / Case
Texas Instruments TLC59291RGET	10 V	Shift Register	24-VQFN (4x4)		Linear	85 °C	-40 °C	50 mA	3 V	Surface Mount	16	5.5 V	33 MHz	24-VFQFN Exposed Pad
Texas Instruments TLC59291RGER	10 V	Shift Register	24-VQFN (4x4)		Linear	85 °C	-40 °C	50 mA	3 V	Surface Mount	16	5.5 V	33 MHz	24-VFQFN Exposed Pad

Catalog

8/16-channel, constant current LED driver with low Quiescent current and Full self-diagnosis

Key Features

• 8/16 Constant-Current Sink Output Channels withOn/Off ControlCurrent 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 VLED Power-Supply Voltage: Up to 10 VConstant-Current Accuracy:Channel-to-Channel = ±3% (Typical)Device-to-Device = ±2% (Typical)Low Quiescent CurrentSOUT can be Configured for 8-Channel or 16-Channel OutputLED Open Detection (LOD)/LED Short Detection(LSD) with Invisible Detection Mode (IDM)Output Leakage Detection (OLD) Detects 3 µALeakPre-Thermal Warning (PTW)Thermal Shutdown (TSD)Current Reference Terminal Short Flag (ISF)Power-Save Mode with 10-µA ConsumptionUndervoltage Lockout Sets the Default Data2-ns Delayed Switching Between Each ChannelMinimizes Inrush CurrentOperating Temperature: –40°C to 85°C8/16 Constant-Current Sink Output Channels withOn/Off ControlCurrent 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 VLED Power-Supply Voltage: Up to 10 VConstant-Current Accuracy:Channel-to-Channel = ±3% (Typical)Device-to-Device = ±2% (Typical)Low Quiescent CurrentSOUT can be Configured for 8-Channel or 16-Channel OutputLED Open Detection (LOD)/LED Short Detection(LSD) with Invisible Detection Mode (IDM)Output Leakage Detection (OLD) Detects 3 µALeakPre-Thermal Warning (PTW)Thermal Shutdown (TSD)Current Reference Terminal Short Flag (ISF)Power-Save Mode with 10-µA ConsumptionUndervoltage Lockout Sets the Default Data2-ns Delayed Switching Between Each ChannelMinimizes Inrush CurrentOperating Temperature: –40°C to 85°C

Description

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 µA (typical) when all outputs are off. 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 µA (typical) when all outputs are off.