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MAX6947 - Constant-Current LED Drivers and I/O Expanders

Download the MAX6947 datasheet PDF. This datasheet also covers the MAX6946 variant, as both devices belong to the same constant-current led drivers and i/o expanders family and are provided as variant models within a single manufacturer datasheet.

General Description

The MAX6946/MAX6947 I2C

-/SMBus TM-compatible, serial-interfaced peripherals provide microprocessors with 10 I/O ports rated to 7V.

Key Features

  • 400kb, 6V-Tolerant Serial Interface.
  • 2.25V to 3.6V Operation.
  • I/O Ports Default to High Impedance (LEDs Off) on Power-Up.
  • I/O Port Inputs Are Overvoltage Protected to 7V.
  • I/O Port Outputs Are 7V-Rated Open-Drain, 10mA or 20mA Constant-Current Static/PWM LED Drivers, or Open-Drain Logic Outputs.
  • I/O Ports Support Hot Insertion.
  • Individual 8-Bit PWM Intensity Control for Each LED.
  • RST Input Clears Serial Interface and Can Exi.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MAX6946_MaximIntegratedProducts.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX6946 Constant-Current LED Drivers and I/O Expanders
MAX6948B High-Efficiency PWM LED Driver
MAX6920 Serial-Interfaced VFD Tube Driver
MAX6921 (MAX6921 / MAX6931) Serial-Interfaced VFD Tube Drivers
MAX6922 Serial-Interfaced VFD Tube Drivers

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
19-0598; Rev 0; 7/06 10-Port, Constant-Current LED Drivers and I/O Expanders with PWM Intensity Control General Description The MAX6946/MAX6947 I2C*-/SMBus TM-compatible, serial-interfaced peripherals provide microprocessors with 10 I/O ports rated to 7V. Each port can be configured as a 2.5mA to 20mA constant-current LED driver (static or PWM), a 1.25mA to 10mA constant-current LED driver (static or PWM), an open-drain logic output, or an overvoltage-protected Schmitt logic input. Analog and switching LED intensity control includes indiwww.DataSheet4U.com vidual 8-bit PWM control per output, individual 1-bit analog current control (half/full scale) per output, and a global 3-bit DAC current control that applies to all LED outputs.