TLC5952 24-Channel Constant-Current LED Driver with Global Brightness and LED Open Short Detection | TI.com

TLC5952 (ACTIVE)

24-Channel Constant-Current LED Driver with Global Brightness and LED Open Short Detection

 

Description

The TLC5952 device is a 24-channel, constant-current sink driver. Each channel can be turned on or off with internal register data. The output channels are grouped into three groups of eight channels each. Each channel group has a 128-step global brightness control (BC) function. Both on-off data and BC are writable via a serial interface. The maximum current value of all 24 channels is set by a single external resistor.

The TLC5952 device has three error detection circuits: LED-open detection (LOD), LED-shorted detection (LSD), and a thermal error flag (TEF). The error detection is read via a serial interface.

Features

  • 24-Channel Constant-Current Sink Output With On-Off Control
  • Current Capability:
    • 35 mA for 16 Channels
    • 26.2 mA for 8 Channels
  • Global Brightness Control (BC) for Each Color Group: 7-Bit (128 Step), Three Groups
  • LED Power-Supply Voltage up to 15 V
  • VCC = 3 V to 5.5 V
  • Constant-Current Accuracy:
    • Channel-to-Channel = ±1%
    • Device-to-Device = ±3%
  • CMOS Logic Level I/O
  • Data Transfer Rate: 35 MHz
  • BLANK Pulse Duration: 15 ns
  • Open-Load, Shorted-Load, and Overtemperature Detection
  • Thermal Shutdown (TSD) With Auto Restart
  • Delay Switching to Prevent Inrush Current
  • Operating Temperature: –40°C to 85°C
  • Packages: HTSSOP-32, QFN-32

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Features
Analog dimming steps
Data transfer rate (Typ) (MHz)
Ch to ch accuracy (Typ) (+/- %)
Package Group
Package size: mm2:W x L (PKG)
Rating
Operating temperature range (C)
TLC5952 TLC5947 TLC5951
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    
Internal GS Clock
PWM LED Driver
Thermal Shutdown    
Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good
Thermal Shutdown    
128       256    
35     30     30    
1     2     1.5    
HTSSOP | 32     HTSSOP | 32
VQFN | 32    
HTSSOP | 38
VQFN | 40
WQFN | 40    
32HTSSOP: 89 mm2: 8.1 x 11 (HTSSOP | 32)     32HTSSOP: 89 mm2: 8.1 x 11 (HTSSOP | 32)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)    
38HTSSOP: 101 mm2: 8.1 x 12.5 (HTSSOP | 38)
40VQFN: 36 mm2: 6 x 6 (VQFN | 40)
40WQFN: 36 mm2: 6 x 6 (WQFN | 40)    
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