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TLC69661

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Mini-LED local dimming backlight driver with 60-mA 16-channel integrated current sink

Product details

Number of channels 16 Vin (min) (V) 3 Vin (max) (V) 5.5 LED current per channel (mA) 60 Features Hybrid Dimming/Phase Shift, LED Open Detection, LED Short Detection, Local dimming, Serial interface Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 16 Vin (min) (V) 3 Vin (max) (V) 5.5 LED current per channel (mA) 60 Features Hybrid Dimming/Phase Shift, LED Open Detection, LED Short Detection, Local dimming, Serial interface Operating temperature range (°C) -40 to 85 Rating Catalog
DSBGA (YBH) 24 3.768324 mm² 2.382 x 1.582 WQFN (RTW) 24 16 mm² 4 x 4
  • Operating voltage VCC range: 3V to 5.5V
  • 16 constant current sinks with high precision:
    • Maximum output current / voltage:
      • 30mA / 20V: TLC69601
      • 60mA / 20V: TLC69611
      • 30mA / 50V: TLC69651
      • 60mA / 50V: TLC69661
    • 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: 1.8V / 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
  • Operating voltage VCC range: 3V to 5.5V
  • 16 constant current sinks with high precision:
    • Maximum output current / voltage:
      • 30mA / 20V: TLC69601
      • 60mA / 20V: TLC69611
      • 30mA / 50V: TLC69651
      • 60mA / 50V: TLC69661
    • 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: 1.8V / 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

TLC696x1 is a 16-channel, constant current sink driver. Each device integrates 16 constant current sinks with 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 16,000 local dimming zones.

To optimize system effiency, 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 acheive simplified system layout. The device also integrates minimum brightness update latency, black insertion and VRR features to improve display quality.

TLC696x1 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.

TLC696x1 is a 16-channel, constant current sink driver. Each device integrates 16 constant current sinks with 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 16,000 local dimming zones.

To optimize system effiency, 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 acheive simplified system layout. The device also integrates minimum brightness update latency, black insertion and VRR features to improve display quality.

TLC696x1 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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* Data sheet TLC696x1 16-Channel, Local Dimming Backlight LED Driver datasheet PDF | HTML 04 Apr 2023
Certificate TLC69661RTWEVM EU RoHS Declaration of Conformity (DoC) 03 Mar 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 (...)
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DSBGA (YBH) 24 View options
WQFN (RTW) 24 View options

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