48-channel, 16bit ES-PWM LED driver w/ pre-charge FET, LED open Detection and caterpillar cancelling
Product details
Parameters
Package | Pins | Size
Features
- 48 Constant-Current Sink Output Channels
- Sink Current Capability with Max BC/CC data
- 1~20mA (VCC = 3.3V)
- 1∼25mA (VCC = 5V)
- Global Brightness Control (BC): 3-Bit (8 Step)
- Global Brightness Control (CC) for Each Color Group:
9-Bit (512 Step), Three Groups - LED Power Supply Voltage up to 10V
- VCC = 3.0 to 5.5V
- Knee Voltage Vout = 0.24V at 10mA
- Constant Current Accuracy
- Channel to Channel = ±1%(Typ), ±3%(Max)
- Device to Device = ±1%(Typ), ±2%(Max)
- Data Transfer Rate : 33MHz
- Grayscale Control Clock : 33MHz
- Pre-charge FET for Ghost Cancelling
- Enhanced Circuit for Caterpillar Cancelling
- Selectable Data Transfer Bit and PWM Bit (9 bit to 16 bit)
- Selectable Traditional PWM and ES-PWM
- LED Open Detection (LOD)
- Thermal Shut Down (TSD)
- Auto Display Repeat/Auto Data Refresh
- Delay Switching to Prevent Inrush Current
- Operating Temperature : –40°C to +85°C
Description
The TLC5957 is a 48-channel constant current sink driver. Each channel has an individually-adjustable, 65536-step, pulse width modulation (PWM) grayscale (GS) brightness control.
The output channels are divided into three groups, each group has a 512 step color brightness control (CC), CC adjusts brightness between colors. The maximum current value of all 48 channels can be set by 8-step global brightness control (BC). BC adjusts brightness deviation between LED drivers. GS, CC and BC data are accessible via a serial interface port.
TLC5957 has one error flag: LED open detection (LOD), which can be read via a serial interface port. Each constant-current has a pre-charge field- effect transistor (FET), which can remove ghosting and improve display performance on the multiplexing LED display. Besides, TLC5957 has an enhanced circuit, it can cancel the caterpillar effect caused by LED open.
TLC5957 has a poker data transmission mode; GS data length can be configured from 9 bit to 16 bit according to PWM bits in each sub-segment. Poker Mode can significantly increase visual refresh rate in multiplexing applications.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TLC5957 48-Channel, 16-Bit ES-PWM LED Driver with Pre-Charge FET, LED OPEN Detection and Caterpillar Cancelling datasheet | Aug. 21, 2014 |
White paper | Common LED Functions and LED Driver Design Considerations | Sep. 21, 2020 | |
Technical articles | Here's how body electronics and lighting technology are changing the driving experience | Sep. 26, 2016 | |
Technical articles | LED brightness adjustment: high-frequency PWM dimming | Aug. 26, 2016 | |
User guide | How to Use TLC5957 to Build a Multiplexing LED Wall | May 25, 2016 | |
Technical articles | Take better selfies with innovative LED flashes | Nov. 18, 2014 | |
Technical articles | Solving the automotive EMI issues in new cars with all the screens | Sep. 10, 2014 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download TIDA-01615 BOM.pdf (63KB) -
download TIDA-01615 Assembly Drawing.pdf (484KB) -
download TIDA-01615 PCB.pdf (2763KB) -
download TIDA-01615 CAD Files.zip (1429KB) -
download TIDA-01615 Gerber.zip (2176KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
QFN (RTQ) | 56 | View options |
Ordering & quality
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