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1 Features

? AEC-Q100 qualified for automotive applications:

– Device temperature grade 1: –40°C to +125°C,

TA

– Device HBM ESD classification level 2

– Device CDM ESD classification level C4B

? Functional Safety-Capable:

– Documentation available to aid functional safety

system design

? 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: TLC69602/4/8-Q1

? 60 mA / 20 V: TLC69612/4/8-Q1

? 30 mA / 50 V: TLC69652/4/8-Q1

? 60 mA / 50 V: TLC69662/4/8-Q1

– 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

? 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:

– Automotive Central Information Display

– Automotive Cluster Display

– Automotive Head-up Display

3 Description

The TLC696x8-Q1 is a family of LCD local dimming

backlight driver compatible with TLC696x0-Q1 which

is a scan MOSFET controller to achieve 2/4/8

time-multiplexing control. Each device integrates 16

constant current sinks with corresponding size of

SRAM for brightness storage. The device connects to

each other by two-wire serial interface in daisy chain

topology and supports up to 1024 devices for more

than 32,000 local dimming zones.

To optimize system efficiency, the device is equipped

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 achieve simplified system layout. The device also

integrates minimum brightness update latency, black

insertion and VRR features to improve display quality.

TLC696x2/4/8-Q1 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.