SLIS142D December 2012 – September 2016 TLC6C598-Q1
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Parameter Measurement Information
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
9 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.
9.1 Application Information
The TLC6C598-Q1 device is a serial-in, parallel-out, power and logic, 8-bit shift register with low-side open-drain DMOS output ratings of 40-V and 50-mA continuous sink-current capabilities when VCC = 5 V. The device is designed to drive resistive loads and is particularly well-suited as an interface between a microcontroller and LEDs or lamps. The device also provides up to 2000 V of ESD protection when tested using the human body model and 200 V when using the machine model
9.2 Typical Application
Figure 14 shows a typical cascade application circuit with two TLC6C598-Q1 chips configured in cascade topology. The MCU generates all the input signals.
Figure 14. Typical Application Circuit
9.2.1 Design Requirements
| DESIGN PARAMETER | EXAMPLE VALUE |
|---|---|
| VBattery | 9 V to 40 V |
| VCC_1 | 3.3 V |
| I(D0), I(D1), I(D2), I(D3) , I(D4), I(D5), I(D6), I(D7) | 30 mA |
| VCC_2 | 5 V |
| I(D8), I(D9), I(D10), I(D11) , I(D12), I(D13), I(D14), I(D15) | 50 mA |
9.2.2 Detailed Design Procedure
To begin the design process, the designer must decide on a few parameters, as follows:
- Vsupply: LED supply voltage
- VDx: LED forward voltage
- I: LED current
With these parameters determined, the resistor in series with the LED can be calculated by using the following equation:
9.2.3 Application Curve
Figure 15. TLC6C598-Q1 Application Waveform