TCA6507

具有强度控制和关断状态的低压 7 位 I2C 和 SMBus LED 驱动器

This 7-bit LED dimmer for the two-line bidirectional bus I2C is designed to control or dim LEDs through the I2C interface. Without this device, the microcontroller must be actively involved in turning on and off the LEDs per the required dimming rate, which uses valuable processor time. The alleviates this issue by limiting the number of operations required by the processor in blinking LEDs and helps to create a more efficient system. The TCA6507 handles all pulse width modulation PWM logic, allowing the processor to use its cycles for more important tasks.

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Seven LED Driver Outputs: ON, OFF, Blinking,

Fading at Programmable Rates

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Open-Drain Outputs Directly Drive LEDs to

40-mA Maximum

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Two Independent Banks of LED Drivers

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Widely Programmable Blink Rates, Fade-ON and

Fade-OFF Rates and Maximum Intensity

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Outputs Not Used as LED Drivers Can Be Used

as Regular General-Purpose Open-Drain Outputs

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16 Steps of Maximum Intensity Control from

Fully-OFF to Fully-ON States

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Smooth Perceived Transitions for Fade-ON and

Fade-OFF

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Operating Power-Supply Voltage Range of

1.65-V to 3.6-V

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5.5-V Tolerant Open-Drain Outputs

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Low Standby Current With Shutdown Capability

for Additional Power Savings

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Internal Oscillator Requires No External

Components

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Programmed Through I2C Bus Interface

Logic Compatible With SMBus

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No Glitch on Power Up

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ESD Protection Exceeds JESD 22

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2000-V Human-Body Model A114-A

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200-V Machine Model A115-A

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1000-V Charged-Device Model C101

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Latch-Up Performance Exceeds 100 mA Per

JESD 78, Class II