1FEATURES
23• 16 Constant-Current Sink Output Channels
with On/Off Control
• Current Capability:
– 40 mA (VCC ≤ 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

APPLICATIONS
• Variable Message Signs (VMS)
• Illumination

DESCRIPTION
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.