TCA6507_16 Datasheet, PDF (28/45 Pages) Texas Instruments – Low-Voltage 7-Bit I2C and SMBus LED Driver

TCA6507
SCPS164C – MAY 2007 – REVISED JANUARY 2016
9 Application and Implementation
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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 must
validate and test their design implementation to confirm system functionality.
9.1 Application Information
Applications of the TCA6507 contains an I²C (or SMBus) master device. The TCA6507 is used to control the
blinking pattern of LEDs or as a general purpose output.
9.2 Typical Application
Figure 22 shows a general application in which the TCA6507 can be used. Each LED output is driving one LED.
Figure 25 highlights another application where the TPS61052 boost converter and high-power LED driver and
TCA6507 7-bit LED driver can be used in combination for applications requiring flashlight functionality and/or
high-brightness indicator/backlight LEDs.
V_CC
(1.8 V)
V_CC
10 kW
SCL
Master
Controller
SDA
EN
10 kW
GND
5V
V_CC
SCL
P0
SDA
P1
EN
P2
P3
P4
GND
P5
P6
TCA6507
V_CC
General
Purpose
Logic
Figure 22. Typical Application
9.2.1 Design Requirements
For the typical application example, the TCA6507 is set up to blink the P0 with Bank0 pattern, P1 fully on, and
P2 with Bank1 blinking pattern. The banks is setup to the flashing pattern defined in Figure 23. The options for
lengths of time for each section can be seen in Table 7.
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