1FEATURES
23. 16 Constant-Current Sink Output Channels
. Sink Current Capability with Maximum DC and
BC Data:
. 2 mA to 45 mA (VCC ≤ 3.6 V)
. 2 mA to 60 mA (VCC > 3.6 V)
. Dot Correction (DC):
. 7-Bit (128 Steps) with 0% to 100% Range
. Global Brightness Control (BC):
. 7-Bit (128 Steps) with 25% to 100% Range
. Grayscale Control (GS) with Enhanced
Spectrum or Conventional PWM:
. 16-Bit (65,536 Steps)
. LED Power-Supply Voltage: Up to 10 V
. VCC: 3.0 V to 5.5 V
. Constant-Current Accuracy:
. Channel-to-Channel: ±0.6% (typ), ±2% (max)
. Device-to-Device: ±1% (typ), ±4% (max)
. Data Transfer Rate: 33 MHz
. Grayscale Control Clock: 33 MHz
. Auto Display Repeat and Auto Data Refresh
. Display Timing Reset
. Power-Save Mode to Minimize VCC Current
. LOD and LSD with Invisible Detection
Mode (IDM)
. Output Leakage Detection (OLD)
. Current Reference Terminal Short Flag (ISF)
. Thermal Shutdown (TSD) and Error Flag (TEF)
. Pre-Thermal Warning (PTW)
. Four-Channel Grouped Delay Switching to
Prevent Inrush Current
. Operating Temperature: .40°C to +85°C

APPLICATIONS
. LED Video Displays
. LED Signboards

DESCRIPTION
The TLC5948A is a 16-channel, constant-current sink
LED driver. Each channel has an individually-
adjustable, pulse width modulation (PWM) grayscale
(GS) brightness control with 65,536 steps and 128
steps of constant-current dot correction (DC). DC adjusts brightness deviation between channels. All
channels have a 128-step global brightness control
(BC). BC adjusts brightness deviation with other LED
drivers. GS, DC, and BC data are accessible with a
serial interface port.
The TLC5948A has six error flags: LED open detection (LOD), LED short detection (LSD), output
leakage detection (OLD), reference current terminal
short flag detection (ISF), pre-thermal warning (PTW),
and thermal error flag (TEF). The error detection
results can be read with a serial interface port.