MAX6964

PRODUCTION

17-Output LED Driver/GPO with Intensity Control and Hot-Insertion Protection

Space-Saving, 17-Output LED Driver with Active-Low RST, 240-Step PWM Brightness Control, and 2-Phase Blink

Data Sheet (Rev. 3) Product Selection Table
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Overview

  • 400kbps, 2-Wire Serial Interface, 5.5V Tolerant
  • 2V to 3.6V Operation
  • Overall 8-Bit PWM LED Intensity Control
    • Global 16-Step Intensity Control
    • Plus Individual 16-Step Intensity Controls
  • Two-Phase LED Blinking
  • High Port Output Current—Each Port 50mA (max)
  • Active-Low RST Input Clears the Serial Interface and Restores Power-Up Default State
  • Supports Hot Insertion
  • Outputs are 7V-Rated Open Drain
  • Low Standby Current (1.2µA (typ), 3.3µA (max))
  • Small 4mm x 4mm, 0.8mm High Thin QFN Package
  • -40°C to +125°C Temperature Range

The MAX6964 I²C-compatible serial interfaced peripheral provides microprocessors with 17 output ports. Each output is an open-drain current-sinking output rated at 50mA and 7V. The outputs are capable of driving LEDs, or providing logic outputs with external resistive pullup up to 7V.

Eight-bit PWM current control is also integrated. Four of the bits are global control and apply to all LED outputs to provide coarse adjustment of current from fully off to fully on with 14 intensity steps. Additionally, each output has an individual 4-bit control, which further divides the globally set current into 16 more steps. Alternatively, the current control can be configured as a single 8-bit control that sets all outputs at once.

Each output has independent blink timing with two blink phases. LEDs can be individually set to be either on or off during either blink phase, or to ignore the blink control. The blink period is controlled by an external clock (up to 1kHz) on BLINK or by a register. The BLINK input can also be used as a logic control to turn the LEDs on and off, or as a general-purpose input (GPI). The MAX6964 supports hot insertion. The SDA, SCL, active-low RST, BLINK, and the slave address input ADO remain high impedance in power-down (V+ = 0V) with up to 6V asserted upon them. The output ports remain high impedance with up to 8V asserted upon them.

The MAX6964 is controlled through a 2-wire I²C serial interface, and can be configured to one of four I²C addresses.

Applications

  • Keypad Backlights
  • LCD Backlights
  • LED Status Indication
  • RGB LED Drivers
MAX6964
17-Output LED Driver/GPO with Intensity Control and Hot-Insertion Protection
MAX6964: Typical Application Circuit
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Documentation

Data Sheet 1

Reliability Data 1

Design Note 1

Technical Articles 2

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
I/O Expanders 10
MAX7315
PRODUCTION 8-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection
MAX7312
PRODUCTION 2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection
MAX7311
PRODUCTION 2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection
MAX7314
PRODUCTION 18-Port GPIO with LED Intensity Control, Interrupt, and Hot-Insertion Protection
MAX7300
PRODUCTION 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port I/O Expander
MAX7301
PRODUCTION 4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port I/O Expander
MAX7316
10-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection
MAX7313
PRODUCTION 16-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection
MAX7317
PRODUCTION 10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection
MAX7318
PRODUCTION 2-Wire-Interfaced, 16-Bit, I/O Port Expander with Interrupt and Hot-Insertion Protection
LED Drivers 4
MAX7310
PRODUCTION 2-Wire-Interfaced 8-Bit I/O Port Expander with Reset
MAX6965
PRODUCTION 9-Output LED Driver with Intensity Control and Hot-Insertion Protection
MAX6956
PRODUCTION 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port LED Display Driver and I/O Expander
MAX6957
PRODUCTION 4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port LED Display Driver and I/O Expander
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Tools & Simulations

Software Development 1

Evaluation Kits

MAX6964EVCMAXQUSB

Evaluation Kit for the MAX6964

Buy Now View Details

Features and Benefits

  • Proven PCB Layout
  • Evaluates Four RGB and Five White LEDs
  • Independent Output Control of Each LED
  • Demonstrates Unique Single-Pin, One-of-Four 2-Wire Addressing
  • Demonstrates Relay Driving
  • PC Interface or User 2-Wire System Interface
  • Windows 98SE/2000/XP-Compatible Software
  • Surface-Mount Components
  • Fully Assembled and Tested

Product Details

The MAX6964 evaluation kit (EV kit) is a fully assembled and tested surface-mount, 17-output LED driver/GPO controller printed-circuit board (PCB). The circuit uses a MAX6964 IC in a 24-pin QSOP package. The EV kit includes four RGB LEDs and five white LEDs that can be controlled simultaneously by the MAX6964. The EV kit demonstrates the MAX6964 IC's 8-bit PWM LED intensity control, two-phase LED blinking, reset, and unique single-pin, one-of-four I²C or 2-wire address features.

The MAX6964 EV kit also demonstrates the BLINK feature and includes a configurable oscillator circuit. The EV kit can also be reconfigured for evaluating a relay.

The MAX6964 EV kit provides PCB pads for the MAX6964 2-wire serial-interface signals. A CMAXQUSB interface board can be used to enable PC communication through the 2-wire serial interface. Windows® 98SE/2000/XP-compatible GUI software is provided to access the MAX6964 IC. The MAX6964 EV kit can also be interfaced directly to a user-provided 2-wire system.

Order the MAX6964EVCMAXQUSB+ for a complete PC-based evaluation of the MAX6964. Order the MAX6964EVKIT+ if you already have a CMAXQUSB interface board or do not require PC-based evaluation of the MAX6964.

Applications

  • Keypad Backlights
  • LCD Backlights
  • LED Status Indication
  • RGB LED Drivers

MAX6964EVKIT

Evaluation Kit for the MAX6964

Buy Now View Details

Features and Benefits

  • Proven PCB Layout
  • Evaluates Four RGB and Five White LEDs
  • Independent Output Control of Each LED
  • Demonstrates Unique Single-Pin, One-of-Four 2-Wire Addressing
  • Demonstrates Relay Driving
  • PC Interface or User 2-Wire System Interface
  • Windows 98SE/2000/XP-Compatible Software
  • Surface-Mount Components
  • Fully Assembled and Tested

Product Details

The MAX6964 evaluation kit (EV kit) is a fully assembled and tested surface-mount, 17-output LED driver/GPO controller printed-circuit board (PCB). The circuit uses a MAX6964 IC in a 24-pin QSOP package. The EV kit includes four RGB LEDs and five white LEDs that can be controlled simultaneously by the MAX6964. The EV kit demonstrates the MAX6964 IC's 8-bit PWM LED intensity control, two-phase LED blinking, reset, and unique single-pin, one-of-four I²C or 2-wire address features.

The MAX6964 EV kit also demonstrates the BLINK feature and includes a configurable oscillator circuit. The EV kit can also be reconfigured for evaluating a relay.

The MAX6964 EV kit provides PCB pads for the MAX6964 2-wire serial-interface signals. A CMAXQUSB interface board can be used to enable PC communication through the 2-wire serial interface. Windows® 98SE/2000/XP-compatible GUI software is provided to access the MAX6964 IC. The MAX6964 EV kit can also be interfaced directly to a user-provided 2-wire system.

Order the MAX6964EVCMAXQUSB+ for a complete PC-based evaluation of the MAX6964. Order the MAX6964EVKIT+ if you already have a CMAXQUSB interface board or do not require PC-based evaluation of the MAX6964.

Applications

  • Keypad Backlights
  • LCD Backlights
  • LED Status Indication
  • RGB LED Drivers
MAX6964EVCMAXQUSB
Evaluation Kit for the MAX6964
MAX6964EVKIT
Evaluation Kit for the MAX6964

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