TLC59581 Series

48-channel, 16-bit ESPWM LED driver with pre-charge FET, LOD Caterpillar and support 32-multiplexing

Catalog

48-channel, 16-bit ESPWM LED driver with pre-charge FET, LOD Caterpillar and support 32-multiplexing

Part	Package / Case	Voltage - Supply (Min)	Number of Outputs	Voltage - Supply (Max)	Package Length	Package Name	Package Width	Topology	Type	Current - Output / Channel	Operating Temperature (Max)	Operating Temperature (Min)	Internal Switch(s)	Applications	Mounting Type	Voltage - Output
Texas Instruments TLC59581RTQR	56-VFQFN Exposed Pad	3 V	48	5.5 V	8 mm	56-QFN	8 mm	Shift Register	Linear	25 mA	85 °C	-40 °C	Yes	Signage	Surface Mount	10 V
Texas Instruments TLC59581RTQT	56-VFQFN Exposed Pad	3 V	48	5.5 V	8 mm	56-QFN	8 mm	Shift Register	Linear	25 mA	85 °C	-40 °C	Yes	Signage	Surface Mount	10 V

Catalog

48-channel, 16-bit ESPWM LED driver with pre-charge FET, LOD Caterpillar and support 32-multiplexing

Description

The TLC59581/82are 48-channel constant-current sink drivers. Each channel has an individually-adjustable, 65536-step, pulse width modulation (PWM) grayscale (GS) brightness control. The TLC59581 can support 32-multiplexing while TLC59582 can support 16-multiplexing. The output channels are divided into three groups. Each group has a 512-step color brightness control (CC). CC adjusts brightness control between colors. The maximum current value of all 48 channels can be set by 8-step global brightness control (BC). BC adjusts brightness deviation between LED drivers. GS, CC and BC data are accessible through a serial interface port. See application noteBuild High Density, High Refresh Rate, Multiplexing LED Panel with TLC59581, SLVA744. The TLC59581/82 device has one error flag: the LED open detection (LOD), which can be read through a serial interface port. To resolve this caterpillar issue caused by an open LED, the TLC59581/82 device has an enhanced circuit for caterpillar canceling, thermal shut down (TSD) and IREFresistor short protection (ISP), which ensures a higher system reliability. The TLC59581/82 device also has a power-save mode that sets the total current consumption to 0.8 mA (typical) when all outputs are off. The TLC59581/82 device is a good solution to improve display performance of a multiplexing panel for low-grayscale patterns. The TLC59581/82are 48-channel constant-current sink drivers. Each channel has an individually-adjustable, 65536-step, pulse width modulation (PWM) grayscale (GS) brightness control. The TLC59581 can support 32-multiplexing while TLC59582 can support 16-multiplexing. The output channels are divided into three groups. Each group has a 512-step color brightness control (CC). CC adjusts brightness control between colors. The maximum current value of all 48 channels can be set by 8-step global brightness control (BC). BC adjusts brightness deviation between LED drivers. GS, CC and BC data are accessible through a serial interface port. See application noteBuild High Density, High Refresh Rate, Multiplexing LED Panel with TLC59581, SLVA744. The TLC59581/82 device has one error flag: the LED open detection (LOD), which can be read through a serial interface port. To resolve this caterpillar issue caused by an open LED, the TLC59581/82 device has an enhanced circuit for caterpillar canceling, thermal shut down (TSD) and IREFresistor short protection (ISP), which ensures a higher system reliability. The TLC59581/82 device also has a power-save mode that sets the total current consumption to 0.8 mA (typical) when all outputs are off. The TLC59581/82 device is a good solution to improve display performance of a multiplexing panel for low-grayscale patterns.