Driver or library
TLC696XX-DESIGN — TLC696XX design resources
TLC696XX design resources
TLC69668-Q1
Automotive 128 mini-LED matrix local dimming backlight driver with 60-mA 16-channel current sink
Data sheet
TLC69668-Q1
- 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: 3V to 5.5V
- 16 constant current sinks with high precision:
- Maximum output current / voltage:
- 30mA / 20V: TLC69602/4/8-Q1
- 60mA / 20V: TLC69612/4/8-Q1
- 30mA / 50V: TLC69652/4/8-Q1
- 60mA / 50V: TLC69662/4/8-Q1
- Device-to-device error: ±2% (typ.)
- Channel-to-channel error: ±2% (typ.)
- Maximum output current / voltage:
- 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: 1.8V / 3.3V
- Data transfer rate: up to 20MHz
- High system efficiency:
- Adaptive headroom voltage control (AHVC)
- Ultra-low device power consumption:
- Standby mode: ICC ≤ 200µA
- Normal mode: ICC ≤ 3.5mA
- 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
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.
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Technical documentation
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View all 1 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TLC696x2/4/8-Q1 16-Channel, 2/4/8 Time-Multiplexing, Automotive Local Dimming Backlight LED Driver datasheet | PDF | HTML | 25 May 2023 |
Design & development
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Evaluation board
TLC69661RTWEVM — TLC69661 evaluation module for 16-channel local dimming backlight LED driver
The TLC69661EVM helps the user evaluate the features of the TLC69661 local dimming backlighting LED driver which integrates 16 constant current sinks with SRAM for brightness storage.
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HTSSOP (PWP) | 28 | Ultra Librarian |
| WQFN (RTW) | 24 | Ultra Librarian |
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