홈 전력 관리 LED 드라이버 LED 디스플레이 드라이버
홈
전력 관리
LED 드라이버
LED 디스플레이 드라이버

TLC59291

활성

낮은 정동작 전류와 완전한 자체 진단을 지원하는 8/16채널, 정전류 LED 드라이버

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데이터 시트

TLC59291

활성
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제품 상세 정보

Features Error Flag, Fault Detection, LED Open Detection, LED Short to Ground Detection, LED Short to VLED Detection, ON/OFF LED Driver, Power good, Thermal shutdown Analog dimming steps 128 Data transfer rate (typ) (MHz) 33 Ch to ch accuracy (typ) (±%) 1 Rating Catalog Operating temperature range (°C) -40 to 85
Features Error Flag, Fault Detection, LED Open Detection, LED Short to Ground Detection, LED Short to VLED Detection, ON/OFF LED Driver, Power good, Thermal shutdown Analog dimming steps 128 Data transfer rate (typ) (MHz) 33 Ch to ch accuracy (typ) (±%) 1 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RGE) 24 16 mm² (4 mm × 4 mm)
  • 8/16 Constant-Current Sink Output Channels with
    On/Off Control
  • Current Capability:
    • 1 – 40 mA (VCC ≤ 3.6 V)
    • 1 – 50 mA (VCC > 3.6 V)
  • Global Brightness Control: 7-Bit (128 Steps)
  • Power-Supply Voltage Range: 3 V to 5.5 V
  • LED Power-Supply Voltage: Up to 10 V
  • Constant-Current Accuracy:
    • Channel-to-Channel = ±3% (Typical)
    • Device-to-Device = ±2% (Typical)
  • Low Quiescent Current
  • SOUT can be Configured for 8-Channel or 16-
    Channel Output
  • LED Open Detection (LOD)/LED Short Detection
    (LSD) with Invisible Detection Mode (IDM)
  • Output Leakage Detection (OLD) Detects 3 µA
    Leak
  • Pre-Thermal Warning (PTW)
  • Thermal Shutdown (TSD)
  • Current Reference Terminal Short Flag (ISF)
  • Power-Save Mode with 10-µA Consumption
  • Undervoltage Lockout Sets the Default Data
  • 2-ns Delayed Switching Between Each Channel
    Minimizes Inrush Current
  • Operating Temperature: –40°C to 85°C
  • 8/16 Constant-Current Sink Output Channels with
    On/Off Control
  • Current Capability:
    • 1 – 40 mA (VCC ≤ 3.6 V)
    • 1 – 50 mA (VCC > 3.6 V)
  • Global Brightness Control: 7-Bit (128 Steps)
  • Power-Supply Voltage Range: 3 V to 5.5 V
  • LED Power-Supply Voltage: Up to 10 V
  • Constant-Current Accuracy:
    • Channel-to-Channel = ±3% (Typical)
    • Device-to-Device = ±2% (Typical)
  • Low Quiescent Current
  • SOUT can be Configured for 8-Channel or 16-
    Channel Output
  • LED Open Detection (LOD)/LED Short Detection
    (LSD) with Invisible Detection Mode (IDM)
  • Output Leakage Detection (OLD) Detects 3 µA
    Leak
  • Pre-Thermal Warning (PTW)
  • Thermal Shutdown (TSD)
  • Current Reference Terminal Short Flag (ISF)
  • Power-Save Mode with 10-µA Consumption
  • Undervoltage Lockout Sets the Default Data
  • 2-ns Delayed Switching Between Each Channel
    Minimizes Inrush Current
  • Operating Temperature: –40°C to 85°C

The TLC59291 is a 8/16-channel constant current sink LED driver. Each channel can be turned on-off by writing data to an internal register. The constant current value of all 16 channels is set by a single external resistor and 128 steps for the global brightness control (BC).

The TLC59291 has six type error flags: LED open detection (LOD), LED short detection (LSD), output leak detection (OLD), reference terminal short detection (ISF), Pre thermal warning (PTW) and thermal error flag (TEF). In addition, the LOD and LSD functions have invisible detection mode (IDM) that can detect those errors even when the output is off. The error detection results can be read via a serial interface port.

The TLC59291 has low quiescent current in normal mode, it also has a power-save mode that sets the total current consumption to 10 µA (typical) when all outputs are off.

The TLC59291 is a 8/16-channel constant current sink LED driver. Each channel can be turned on-off by writing data to an internal register. The constant current value of all 16 channels is set by a single external resistor and 128 steps for the global brightness control (BC).

The TLC59291 has six type error flags: LED open detection (LOD), LED short detection (LSD), output leak detection (OLD), reference terminal short detection (ISF), Pre thermal warning (PTW) and thermal error flag (TEF). In addition, the LOD and LSD functions have invisible detection mode (IDM) that can detect those errors even when the output is off. The error detection results can be read via a serial interface port.

The TLC59291 has low quiescent current in normal mode, it also has a power-save mode that sets the total current consumption to 10 µA (typical) when all outputs are off.
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기술 자료

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* 데이터 시트 TLC59291 8/16-Channel, Constant Current LED Driver with 7-bit Brightness Control Low Quiescent Current and Full Self Diagnosis for LED Lamp datasheet (Rev. A) PDF | HTML 2016. 3. 3
백서 Common LED Functions and LED Driver Design Considerations 2020. 9. 21

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