Local dimming mini-LED backlight driver with 16-channel integrated current sink

TLC696x1 is a

16-channel, constant current sink driver. Each device integrates 16 constant current sinks

with SRAM for brightness storage. The device connects to each other by two-wire serial

interface in diasy chain topology and supports up to 1024 devices for 16,000 local dimming

zones.

To optimize system effiency, the device

equips with adaptive headroom voltage control scheme to directly control DC/DC. Only the FB

pin from last device in serial chain should be connected to DC/DC to acheive simplified

system layout. The device also integrates minimum brightness update latency, black insertion

and VRR features to improve display quality.

TLC696x1 has three error flags: LED

open detection (LOD), LED short detection (LSD) and thermal shutdown detection (TSD) for

diagnostic. The device implements two options for readback including UART/INT and SOUT/CLKO

which is programmable by register.