MAX6966ATE+ by Analog Devices

10-Port Constant-Current LED Drivers and I/O Expanders with PWM Intensity Control


The MAX6966/MAX6967 serial-interfaced peripherals provide microprocessors with 10 I/O ports rated to 7V. Each port can be individually configured as either: A 20mA constant-current LED driver (static or pulsewidth modulated (PWM)). A 10mA constant-current LED driver (static or PWM). An open-drain logic output. An overvoltage-protected Schmitt logic input. Analog and switching LED intensity control is built in: Individual 8-bit PWM control per output. Individual 1-bit analog control (half/full) per output. Global 3-bit analog control applies to all LED outputs. PWM timing of the 10 port outputs may be optionally staggered, consecutively phased in 45° increments. This spreads the PWM load currents over time in eight steps, helping to even out the power-supply current and reduce the RMS current. The MAX6966/MAX6967 can be configured to awake from shutdown on receipt of a minimum 3ms pulse on the active-low CS input. This hardware-wakeup feature allows a power-management controller or similar ASIC to enable the MAX6966/MAX6967 with preconfigured LED intensity settings. Shutdown can be programmed to wait up to 4s, fade down the sink currents to zero for a period of 1/16s to 4s, and then shut down. A similar ramp-up from shutdown can be programmed for 1/16s to 4s. The MAX6966/MAX6967 support hot insertion. All port pins remain high impedance in power-down (V+ = 0V) with up to 8V asserted on them. The DOUT/OSC pin can be configured as either the serial interface data output or optional PWM clock input. The MAX6966 powers up defaulting as DOUT output. The MAX6967 defaults as OSC input. For a similar part without the constant-current controls, refer to the MAX7317 data sheet.

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Features

High-Speed 26MHz SPI™-/QSPI™-/MICROWIRE™-Compatible Serial Interface
2.25V to 3.6V Operation
I/O Ports Default to High-Z (LEDs Off) on Power-Up
I/O Port Inputs Are Overvoltage Protected to 7V
I/O Port Outputs Are 7V-Rated Open Drain
I/O Port Outputs Are 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
Any Output May Use or Not Use PWM Control
Exit Shutdown (Warm Start) with Simple Active-Low CS Pulse
Auto Ramp-Down into Shutdown
Auto Ramp-Up Out from Shutdown
0.8µA (typ), 2µA (max) Shutdown Current
Tiny 3mm x 3mm, 0.8mm High Thin QFN Package
-40°C to +125°C Temperature Range

Specifications

LCD or LED LED
Display Type Common Anode
Interface Serial SPI 26Mbit
Digits or Char. 10-Segment
Output Format Any digit type
Segment Blinking No
VSUPPLY (V) (min) 2.25
VSUPPLY (V) (max) 3.6
Package/Pins QSOP/16TQFN/16
BudgetaryPrice (See Notes) 2.87


MAX6966ATE+ Semiconductors - ICs by Analog Devices

LED DRIVER 10 PORT W/IO&PWM 16QFN

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Device Topology Constant Current
No. of Outputs 10Outputs
Output Current 20mA
Output Voltage 7V
Driver Case Style TQFN
No. of Pins 16Pins
Input Voltage Min 2.25V
Input Voltage Max 3.6V
Switching Frequency 100kHz
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Base Number 6966
Common Connection Anode
Data / Control Interface Serial 4 Wire SPI
Device Type LED
Dimming Control Type PWM
Input Voltage 2.25V to 3.6V
LED Display Type Discrete LED
LED Driver Application Backlights LED Indication
Operating Temperature Range -40°C to +125°C
Termination Type Surface Mount Device

Alternative Descriptions

10-Port Constant-Current LED D | Analog Devices
LED DRIVER, 10 PORT, W/IO&PWM, 16QFN | element14

Frequently Asked Questions

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Is the MAX6966ATE+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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