Packaging information
| Package | Pins DSBGA (YBH) | 24 |
| Operating temperature range (°C) -40 to 85 |
| Package qty | Carrier 3,000 | LARGE T&R |
Features for the TLC69668
- Operating voltage VCC range: 3V to 5.5V
- 16 constant current sinks with high precision:
- Maximum output current / voltage:
- 30mA / 20V: TLC69602/4/8
- 60mA / 20V: TLC69612/4/8
- 30mA / 50V: TLC69652/4/8
- 60mA / 50V: TLC69662/4/8
- 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
- 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
Description for the TLC69668
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.