康柏視科技

TLC59208FIRGYR

NTD $15

NTD $12

8-bit Fast-Mode Plus (FM+) I2C-Bus LED driver

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描述
規格

Eight LED Drivers (Each Output Programmable at OFF,
ON, Programmable LED Brightness, Programmable Group
Dimming/Blinking Mixed With Individual LED Brightness)
Eight Open-Drain Output Channels
256-Step (8-Bit) Linear Programmable Brightness Per
LED Output Varying From Fully Off (Default) to Maximum
Brightness Using a 97-kHz PWM Signal
256-Step Group Brightness Control Allows General
Dimming [Using a 190-Hz PWM Signal From Fully Off
to Maximum Brightness (Default)]
256-Step Group Blinking With Frequency Programmable
From 24 Hz to 10.73 s and Duty Cycle From 0% to 99.6%
64 Programmable Slave Addresses Using Three Hardware
Address Pins
Four Software Programmable I²C Bus Addresses
(One LED Group Call Address and Three LED Sub Call
Addresses) Allow Groups of Devices to be Simultaneously
Addressed Any Combination (For Example, One Register
Used for ‘All Call’ so That All the TLC59208Fs
on the I²C Bus Can be Simultaneously Addressed
and the Second Register Used for Three Different Addresses
so That One Third of All Devices on the Bus Can be
Simultaneously Addressed)
Software Enable and Disable for I²C Bus
Address
Software Reset Feature (SWRST Call) Allows the Device
to be Reset Through the I²C Bus
Up to 14 Possible Hardware Adjustable Individual I²C
Bus Addresses Per Device so That Each Device Can be
Programmed
Up to 64 Possible Hardware Adjustable Individual I²C
Bus Addresses Per Device so That Each Device Can be
Programmed Individually
Output State Change Programmable on the Acknowledge or
the STOP Command to Update Outputs Byte-by-Byte or All
at the Same Time (Default to )
Maximum Output Current: 50 mA
Maximum Output Voltage: 17 V
25-MHz Internal Oscillator Requires no External Components
1-MHz Fast-Mode Plus (FM+) Compatible I²C
Bus Interface With 30-mA High Drive Capability
on SDA Output for Driving High Capacitive Buses
Internal Power-On Reset
Noise Filter on SCL/SDA Inputs
No Glitch on Power Up
Active-Low Reset (RESET)
Supports Hot Insertion
Low Standby Current
3.3-V or 5-V Supply Voltage
5.5-V Tolerant Inputs
Packages Offered: 16-Pin Thin Shrink Small-Outline Package
[TSSOP (PW)], 16-Pin Quad Flatpack No Lead [QFN (RGY)]
–40°C to 85°C Operation

The TLC59208F is an I²C bus controlled 8-bit LED driver optimized for red/green/blue/amber (RGBA) color mixing applications. Each LED output has its own 8-bit resolution (256 steps) fixed frequency individual PWM controller that operates at 97 kHz with a duty cycle that is adjustable from 0% to 99.6% to allow the LED to be set to a specific brightness value.

An additional 8-bit resolution (256 steps) group PWM controller has both a fixed frequency of 190 Hz and an adjustable frequency between 24 Hz to once every 10.73 seconds with a duty cycle that is adjustable from 0% to 99.6% that is used to either dim or blink all LEDs with the same value.

Each LED output can be off, on (no PWM control), set at its individual PWM controller value or at both individual and group PWM controller values. The TLC59208F operates with a supply voltage range of 3 V to 5.5 V and the outputs are 17 V tolerant. LEDs can be directly connected to the TLC59208F device outputs.

Software programmable LED Group and three Sub Call I²C bus addresses allow all or defined groups of TLC59208F devices to respond to a common I²C bus address, allowing for example, all the same color LEDs to be turned on or off at the same time or marquee chasing effect, thus minimizing I²C bus commands.

Three hardware address pins allow up to 64 devices on the same bus.

The software reset (SWRST) Call allows the master to perform a reset of the TLC59208F through the I²C bus, identical to the power-on reset (POR) that initializes the registers to their default state causing the outputs to be set high (LED off). This allows an easy and quick way to reconfigure all device registers to the same condition.

TLC59208FIRGYR

TLC59208FIRGYR

NTD $15

NTD $12

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