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TCA6507 Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce TCA6507
Description  LOW-VOLTAGE 7-BIT I2C AND SMBus LED DRIVER WITH INTENSITY CONTROL AND SHUTDOWN
Download  32 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TCA6507 Fiches technique(HTML) 1 Page - Texas Instruments

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1
FEATURES
ZXU PACKAGE
(TOP VIEW)
C
A
1
B
4
3
2
NC
Nointernalconnection
PW PACKAGE
(TOP VIEW)
NC
V
CC
GND
NC
SDA
SCL
EN
P6
P5
P4
P3
P2
P1
P0
7
6
14
13
11
8
10
9
12
1
2
3
4
5
RUE PACKAGE
(TOP VIEW)
P6
P5
P4
P3
P2
P1
V
CC
SCL
SDA
EN
GND
P0
1
2
3
4
5
12
6
7
8
9
10
11
DESCRIPTION/ORDERING INFORMATION
TCA6507
LOW-VOLTAGE 7-BIT I2C AND SMBus LED DRIVER
WITH INTENSITY CONTROL AND SHUTDOWN
SCPS164B – MAY 2007 – REVISED NOVEMBER 2007
www.ti.com
• Seven LED Driver Outputs: On, Off, Blinking,
• Schmitt-Trigger Action Allows Slow Input
Fading at Programmable Rates
Transition and Better Switching Noise
Immunity at the Inputs
• Open-Drain Outputs Directly Drive LEDs to
40 mA Max
Vhys = 0.18 V Typ at 1.8 V
• Can Be Configured Into Two Independent
Vhys = 0.25 V Typ at 2.5 V
Banks of LED Drivers
Vhys = 0.33 V Typ at 3.3 V
• Widely Programmable Blink Rates, Fade-On
• 5.5-V Tolerant Open-Drain Outputs
and Fade-Off Rates and Maximum Intensity
• Low Standby Current with Shutdown
• LED Intensity Set Using Pulse Width
Capability for Additional Power Savings
Modulation (PWM)
• Internal Power-On Reset
• Outputs Not Used as LED Drivers Can Be
• Internal Oscillator Requires No External
Used as Regular General-Purpose Open-Drain
Components
Outputs
• Programmed Through I2C Bus Interface Logic
• 16 Steps of Maximum Intensity Control from
Compatible With SMBus
Fully-Off to Fully-On States
• 400-kHz Fast I2C Bus
• 256 Intensity Levels During Fade-On or
• Noise Filter on SCL/SDA Inputs
Fade-Off for Smooth Perceived Transition
• No Glitch on Power Up
• Operating Power-Supply Voltage Range of
• Supports Hot Insertion
1.65 V to 3.6 V
• ESD Protection Exceeds JESD 22
• EVM Available
2000-V Human-Body Model (A114-A)
200-V Machine Model (A115-A)
1000-V Charged-Device Model (C101)
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
This 7-bit LED dimmer for the two-line bidirectional bus (I2C) is designed to control (or dim) LEDs via the I2C
interface [serial clock (SCL), serial data (SDA)]. Without this device, the microprocessor or microcontroller must
be actively involved in turning on and off the LEDs (per the required dimming rate), which uses valuable
processor time and the overloads I2C bus. The TCA6507 alleviates this issue by limiting the number of
operations required by the processor in blinking LEDs and, thus, helps to create a more efficient system.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2007, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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