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Product Detailed Parameters
- Description：IC LED DRIVER LINEAR 25MA 56QFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：Shift Register
- Internal Switch(s)：Yes
- Number of Outputs：48
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：10V
- Current - Output / Channel：25mA
- Frequency：-
- Dimming：-
- Applications：Signage
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：56-VFQFN Exposed Pad
- Supplier Device Package：56-QFN (8x8)
- Grade：-
- Qualification：-
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Overview
The TLC59582RTQR is a Texas Instruments LED lighting driver IC featuring 48 constant current channels with 16-bit ES-PWM dimming resolution. It utilizes a boost topology to drive LEDs, supporting an output current of 25 mA per channel. The device operates within a supply voltage range of 3 V to 5.5 V and includes integrated pre-charge FETs. Packaged in a QFN-56 (HVQFN-56) format, it supports serial data input via SPI-compatible interfaces.
Feature Summary
- Integrates 48 independent constant current sink channels for high-density LED control
- Features 16-bit enhanced Serial Pulse Width Modulation (ES-PWM) for precise grayscale dimming
- Includes built-in pre-charge FETs to optimize power efficiency during LED startup
- Provides thermal shutdown protection and fault detection capabilities
Applications
- High-end LCD backlight systems requiring uniform brightness
- Professional video wall displays demanding high contrast ratios
- General solid-state lighting fixtures with complex color mixing
- Automotive interior illumination modules
Procurement Notes
Verify the specific suffix RTQR against official Texas Instruments documentation to confirm package type and tape/reel specifications. Ensure compatibility with your PCB footprint for the HVQFN-56 exposed pad configuration. Cross-reference the datasheet revision date to confirm feature sets like pre-charge FET integration. Confirm moisture sensitivity levels and reflow soldering profiles prior to assembly.
Selection Notes
Select this component when designing systems requiring high channel counts without external multiplexing. The 16-bit resolution suits applications needing smooth gradient transitions. Consider the boost topology requirements for driving series LED strings. Evaluate thermal management needs given the 48-channel density in a compact QFN package. Verify SPI interface speed compatibility with the host microcontroller.
Part Context
This part belongs to the TLC5958x family of LED drivers from Texas Instruments. It shares architectural similarities with the TLC59581 but differs in specific internal configurations and pre-charge implementations. The RTQR suffix denotes a specific reel-based packaging variant intended for automated surface-mount assembly processes.
Replacement Considerations
The TLC59582RTQT is a tray-packaged alternative offering identical electrical performance. Check pin-to-pin compatibility if substituting with other members of the TLC5958x series.
