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.