24-channel constant-current LED driver with global brightness and LED open Short Detection
Product details
Parameters
Package | Pins | Size
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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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.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | 24-Channel, Constant-Current LED Driver With Global Brightness Control And LED Open-Short Detection datasheet (Rev. A) | Jul. 25, 2018 |
| White paper | Common LED Functions and LED Driver Design Considerations | Sep. 21, 2020 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | Jun. 25, 2018 | |
| Technical article | Here's how body electronics and lighting technology are changing the driving experience | Sep. 26, 2016 | |
| Technical article | LED brightness adjustment: high-frequency PWM dimming | Aug. 26, 2016 | |
| Technical article | Take better selfies with innovative LED flashes | Nov. 18, 2014 | |
| Technical article | Solving the automotive EMI issues in new cars with all the screens | Sep. 11, 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
- (...)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| HTSSOP (DAP) | 32 | View options |
Ordering & quality
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- MTBF/FIT estimates
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- Ongoing reliability monitoring
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