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Product Detailed Parameters
- Description：IC LED DRIVER LINEAR 50MA 8SOIC
- Series：EasySet™
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：Shift Register
- Internal Switch(s)：Yes
- Number of Outputs：3
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：6V
- Voltage - Output：21V
- Current - Output / Channel：50mA
- Frequency：6MHz
- Dimming：-
- Applications：-
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The TLC59731DR is a 3-channel, 8-bit PWM LED driver IC from Texas Instruments. It provides 50 mA sink current per channel with an internal boost converter capable of up to 21 V output. The device operates on a single-wire EasySet interface at 600 kbps. Electrical specifications include a supply voltage range of 3 V to 6 V and a maximum power consumption of 10 mA. It functions within a temperature range of -40°C to +125°C and is housed in an 8-SOIC package.
Feature Summary
- Integrates a boost converter for driving high-voltage LED loads from low-voltage supplies
- Utilizes a single-wire serial interface to minimize pin count and simplify PCB routing
- Provides 8-bit grayscale control with built-in gamma correction capabilities
Applications
- LED backlighting systems for displays
- General-purpose LED lighting modules
- Portable electronic devices requiring efficient LED drive solutions
Procurement Notes
Verify the specific suffix 'DR' corresponds to the tape-and-reel packaging format required for your assembly line. Confirm that the 8-SOIC footprint matches your design layout. Ensure the component meets RoHS compliance standards for your target market regulations before finalizing procurement orders.
Selection Notes
Select this component when a single-wire interface is preferred to reduce microcontroller I/O usage. It is suitable for applications requiring moderate brightness levels up to 50 mA per channel. Consider the internal boost topology if the input voltage is lower than the required LED forward voltage sum.
Part Context
This part belongs to the TLC5973 family of LED drivers designed for simplicity and efficiency. It complements other Texas Instruments PMIC solutions by offering dedicated constant-current regulation for multi-channel LED arrays without external sensing resistors.
Replacement Considerations
Check for direct substitutes within the TLC5973 series or compatible 3-channel drivers from Texas Instruments. Verify pin compatibility and electrical parameters such as current capability and operating voltage ranges before swapping components.
