TLC696X4中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

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: TLC69602/4/8

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

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

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

– 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

TLC696x2/4/8 devices are a family of LCD local

dimming back-light driver compatible with TLC696x0

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 diasy chain

topology and supports up to 1024 devices for more

than 32,000 local dimming zones.

To optimize system efficiency, 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 achieve

simplified system layout. The device also integrates

minimum brightness update latency, black insertion

and VRR features to improve display quality.

TLC696x2/4/8 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.