特性

• Seven LED Driver Outputs: On, Off, Blinking, Fading at Programmable Rates
• Open-Drain Outputs Directly Drive LEDs to 40 mA Max
• Can Be Configured Into Two Independent Banks of LED Drivers
• Widely Programmable Blink Rates, Fade-On and Fade-Off Rates and Maximum Intensity
• LED Intensity Set Using Pulse Width Modulation (PWM)
• Outputs Not Used as LED Drivers Can Be Used as Regular General-Purpose Open-Drain Outputs
• 16 Steps of Maximum Intensity Control from Fully-Off to Fully-On States
• 256 Intensity Levels During Fade-On or Fade-Off for Smooth Perceived Transition
• Operating Power-Supply Voltage Range of 1.65 V to 3.6 V
• EVM Available
• Schmitt-Trigger Action Allows Slow Input Transition and Better Switching Noise Immunity at the Inputs
  • V_hys = 0.18 V Typ at 1.8 V
  • V_hys = 0.25 V Typ at 2.5 V
  • V_hys = 0.33 V Typ at 3.3 V
• 5.5-V Tolerant Open-Drain Outputs
• Low Standby Current with Shutdown Capability for Additional Power Savings
• Internal Power-On Reset
• Internal Oscillator Requires No External Components
• Programmed Through I²C Bus Interface Logic Compatible With SMBus
• 400-kHz Fast I²C Bus