Texas Instruments TLC69623-Q1 8-Ch LED Driver
Texas Instruments TLC69623-Q1 8-Ch LED Driver is an automotive local-dimming backlight LED driver with eight constant-current sink channels. The device supports up to 16-bit individual pixel-level LED PWM control and 7-bit dot correction for channel-level peak-current adjustment in automotive display backlighting systems.
The TI TLC69623-Q1 shares data via a cascaded serial interface and supports up to 511 connected devices for scalable LED system designs. The TLC69623-Q1 8-Ch LED Driver also includes adaptive headroom voltage control to optimize headroom voltage across channels and devices, helping improve system power efficiency when paired with a DC/DC LED supply.
The LED driver is designed for automotive central information displays, cluster displays, and head-up displays. The TLC69623-Q1 incorporates diagnostics for LED, current-sink, interface, and device fault conditions. The device is available in 16-pin X2QFN wettable flank and SOT-23-THIN package options.
Features
- TLC69623-Q1 AEC-Q100 qualified for automotive applications with Grade 1 ambient operating temperature, HBM classification level H1C, and CDM classification level C4B
- Functional Safety-Compliant device developed for functional safety applications, with documentation available to aid ISO 26262 system design up to ASIL B
- Programmable 7-bit analog dot correction for peak-current control
- High-speed cascaded serial interface with data rates up to 17Mbps
- Integrated 33MHz oscillator for 16-bit PWM output at 500Hz
- Eight integrated current sinks with programmable 16-bit PWM and hybrid dimming
- Refresh rate greater than 20kHz with enhanced spectrum PWM
- Maximum output current and voltage of 60mA and 16V
- Adaptive headroom voltage control and device power-save mode for power efficiency optimization
- EMI mitigation through programmable interface buffer driving capability, current-sink phase shifting, and spread spectrum
- Protection and diagnostics
- LED open detection, short detection, and health check
- Current-sink adjacent-pin short detection and health check
- Interface CRC, command error, timeout error, and communication watchdog detection
- Device undervoltage, ISET out-of-range, thermal shutdown, memory CRC, OTP CRC, and OSC watchdog detection
Applications
- Automotive central information display
- Automotive cluster display
- Automotive head-up display
Specifications
- Daisy-chain support for up to 511 device connections through the CSI data stream sharing
- OUT7 pin from the last daisy-chain device configurable as the FB pin for DC/DC LED supply optimization
- Supply voltage range of 3V to 5.5V
- Package options
- 16-pin X2QFN wettable flank package, 2.5mm x 2.5mm
- 16-pin SOT-23-THIN package, 4.2mm x 2mm
Application Schematic
