TLC5929 Texas instruments

TLC5929

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TLC5929

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Описание

The TLC5929 is a 16-channel constant current sink LED driver. Each channel can be turned on or off by writing data to an internal register. The constant current value of all 16 channels is set by a single external resistor with 128 steps for the global brightness control (BC). The TLC5929 has six error flags: LED open detection (LOD), LED short detection (LSD), output leakage detection (OLD), reference current 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 TLC5929 also has a power-save mode that sets the total current consumption to 10 µA (typ) when all outputs are off.

16 Constant-Current Sink Output Channels with On/Off Control
Current Capability:
- 40 mA (V_CC ≤ 3.6 V)
- 50 mA (V_CC > 3.6 V)
Global Brightness Control: 7-Bit (128 Steps)
Power-Supply Voltage Range: 3.0 V to 5.5 V
LED Power-Supply Voltage: Up to 10 V
Constant-Current Accuracy:
- Channel-to-Channel = ±1% (typ), ±3% (max)
- Device-to-Device = ±2% (typ), ±4% (max)
Data Transfer Rate: 33 MHz
BLANK Pulse Width: 40 ns (min)
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

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
Data transfer rate (typ) (MHz)	33
Ch to ch accuracy (typ) (±%)	1.5
Rating	Catalog
Operating temperature range (°C)	-40 to 85