1 Features
• Operating voltage VCC range: 3 V to 5.5 V
• 16 constant current sinks with high precision:
– Maximum output current / voltage:
• 30 mA / 20 V: TLC69601
• 60 mA / 20 V: TLC69611
• 30 mA / 50 V: TLC69651
• 60 mA / 50 V: TLC69661
– Device-to-device error: ±2% (typ.)
– Channel-to-channel error: ±2% (typ.)
• Flexible dimming control:
– Global 8-bit Maximum Current (MC) setting
– Brightness resolution: up to 15-bit
– PWM / Hybrid control mode
• High speed daisy chain interface:
– I/O voltage compatible with: 1.8 V / 3.3 V
– Data transfer rate: up to 20 MHz
• High system efficiency:
– Adaptive headroom voltage control (AHVC)
– Ultra-low device power consumption:
• Standby mode: ICC ≤ 200 uA
• Normal mode: ICC ≤ 3.5 mA
• EMI enhancement:
– Programmable interface driving capability
– Integrated 4 phase-shifting schemes
• Display quality improvement:
– Minimum brightness update latency
– Programmable black insertion
– Variable refresh rate (VRR) without flickering
• Diagnostics:
– LED open / short detection for each zone
– Device thermal shutdown detection
– Report interface option:
• UART and interrupt pin (INT)
• Two-wire output: CLK_O and SOUT

2 Applications
• LCD local dimming backlight:
– TV
– Monitor
– Notebook
– Tablet

3 Description
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/CLK_O which is programmable
by register.