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TCA6507PWRG4 Fiches technique(PDF) 1 Page - Texas Instruments |
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TCA6507PWRG4 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 32 page 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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