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Product Detailed Parameters
- Description：IC LED DRVR LIN PWM 45MA 24SSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：Shift Register
- Internal Switch(s)：Yes
- Number of Outputs：16
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：3.6V
- Voltage - Output：10V
- Current - Output / Channel：45mA
- Frequency：33MHz
- Dimming：PWM
- Applications：Signage
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-SSOP (0.154", 3.90mm Width)
- Supplier Device Package：24-SSOP
- Grade：-
- Qualification：-
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Overview
The TLC5949DBQR is a Texas Instruments LED lighting driver IC featuring 16 channels with 12-bit ES-PWM constant-current control. It operates within a supply voltage range of 3 V to 5.5 V and supports output currents up to 25 mA per channel. The device utilizes a serial interface for data input and functions at frequencies up to 33 MHz. It is housed in a 24-pin SSOP package and is rated for an operating temperature range from -40 °C to +85 °C.
Feature Summary
- Integrates 16-channel constant-current drivers with 12-bit enhanced serial pulse-width modulation for precise brightness control.
- Supports daisy-chaining multiple devices via a single serial interface to reduce pin count requirements.
- Includes internal circuitry for current regulation without requiring external sense resistors.
Applications
- LED backlighting systems
- General-purpose LED illumination
- Signage displays
Procurement Notes
Verify the specific suffix 'DBQR' corresponds to the tape-and-reel packaging variant when ordering. Confirm that the required output current and voltage levels align with the component's electrical specifications. Ensure compatibility with the host controller's serial communication protocol before finalizing procurement decisions.
Selection Notes
Select this component for designs requiring high-resolution grayscale control across multiple LEDs. Consider the thermal performance of the SSOP package under continuous load conditions. Evaluate system power constraints against the maximum supply voltage and per-channel current capabilities to ensure stable operation.
Part Context
This part belongs to the Texas Instruments TLC594x series of LED drivers, which are designed for applications needing efficient multi-channel current control. The series offers various resolution options and features tailored for display and lighting markets. The DBQR designation indicates a specific package and reel configuration within this product family.
Replacement Considerations
Direct substitutes may include other 16-channel PWM LED drivers from Texas Instruments or compatible manufacturers. Verify pinout compatibility and electrical parameters such as output current and supply voltage ranges before substitution.
FAQ
Does the TLC5949DBQR support daisy-chaining?
Yes, the device supports daisy-chaining multiple units using a single serial interface to minimize microcontroller pin usage.
What is the maximum output current per channel?
The maximum output current per channel is 25 mA.
