EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX6966/MAX6967 10-Port Constant-Current LED Drivers and I/O Expanders with PWM Intensity Control General Description Features The MAX6966/MAX6967 serial-interfaced peripherals High-Speed 26MHz SPI-/QSPI-/MICROWIRE- provide microprocessors with 10 I/O ports rated to 7V. Compatible Serial Interface Each port can be individually configured as either: 2.25V to 3.6V Operation A 20mA constant-current LED driver (static or pulse- I/O Ports Default to High-Z (LEDs Off) on Power-Up width modulated (PWM)). I/O Port Inputs Are Overvoltage Protected to 7V A 10mA constant-current LED driver (static or PWM). I/O Port Outputs Are 7V-Rated Open-Drain An open-drain logic output. I/O Port Outputs Are 10mA or 20mA Constant- An overvoltage-protected Schmitt logic input. Current Static/PWM LED Drivers, or Open-Drain Analog and switching LED intensity control is built in: Logic Outputs Individual 8-bit PWM control per output. I/O Ports Support Hot Insertion Individual 1-bit analog control (half/full) per output. Individual 8-Bit PWM Intensity Control for Each LED Global 3-bit analog control applies to all LED outputs. Any Output May Use or Not Use PWM Control PWM timing of the 10 port outputs may be optionally Exit Shutdown (Warm Start) with Simple CS Pulse staggered, consecutively phased in 45 increments. This spreads the PWM load currents over time in eight steps, Auto Ramp-Down into Shutdown helping to even out the power-supply current and reduce Auto Ramp-Up Out from Shutdown the RMS current. 0.8A (typ), 2A (max) Shutdown Current The MAX6966/MAX6967 can be configured to awake Tiny 3mm x 3mm, 0.8mm High Thin QFN Package from shutdown on receipt of a minimum 3ms pulse on the -40C to +125C Temperature Range CS input. This hardware-wakeup feature allows a power- management controller or similar ASIC to enable the MAX6966/MAX6967 with preconfigured LED intensity settings. Ordering Information Shutdown can be programmed to wait up to 4s, fade TEMP PIN- TOP PKG down the sink currents to zero for a period of 1/16s to 4s, PART RANGE PACKAGE MARK CODE and then shut down. A similar ramp-up from shutdown can be programmed for 1/16s to 4s. 16 Thin QFN -40C to MAX6966ATE 3mm x 3mm x ACF T1633-4 The MAX6966/MAX6967 support hot insertion. All port +125C 0.8mm pins remain high impedance in power-down (V+ = 0V) with up to 8V asserted on them. -40C to MAX6966AEE 16 QSOP +125C The DOUT/OSC pin can be configured as either the serial interface data output or optional PWM clock input. The 16 Thin QFN -40C to MAX6966 powers up defaulting as DOUT output. The MAX6967ATE 3mm x 3mm x ACG T1633-4 +125C MAX6967 defaults as OSC input. 0.8mm For a similar part without the constant-current controls, -40C to MAX6967AEE 16 QSOP refer to the MAX7317 data sheet. +125C Applications LCD Backlights RGB LED Drivers Keypad Backlights Portable Equipment LED Status Indication Cellular Phones SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. 19-3487 Rev 3 8/19MAX6966/MAX6967 10-Port Constant-Current LED Drivers and I/O Expanders with PWM Intensity Control Absolute Maximum Ratings Voltage (with respect to GND) Continuous Power Dissipation V+ ............................................................................-0.3V to +4V 16-Pin QSOP (derate 8.3mW/C over T = +70C) ....667mW A SCLK, DIN, CS, DOUT/OSC .......................-0.3V to (V+ + 0.3V) 16-Pin QFN (derate 14.7mW/C over T = +70C) ..1176mW A P ............................................................................-0.3V to +8V Operating Temperature Range (T to T ) ....-40C to +125C MIN MAX DC Current into P .............................................................24mA Junction Temperature ......................................................+150C DC Current into DOUT/OSC ..............................................10mA Storage Temperature Range ............................ -65C to +150C Total GND Current ............................................................280mA Lead Temperature (soldering, 10s) .................................+300C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Electrical Characteristics (Typical Operating Circuit, V+ = 2.25V to 3.6V, T = T to T , unless otherwise noted. Typical values are at V+ = 3.3V, A MIN MAX T = +25C.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Supply Voltage V+ 2.25 3.60 V Output Load External Supply V 7 V EXT Voltage P0P9 Standby Current T = +25C 0.7 1.5 A (Interface Idle, CS Run Disabled, CS at V+ other digital I T = T to +85C 1.7 A STBY A MIN PWM Disabled, All Ports High inputs at V+ or GND T = T to T 1.9 Impedance) A MIN MAX Supply-Current Interface Only T = +25C 390 620 A f = 26MHz, other SCLK (CS Run Enabled, PWM I digital inputs at V+ or T = T to +85C 680 A + A MIN Disabled, All Ports High GND DOUT unloaded T = T to T 730 Impedance) A MIN MAX Delta Supply Current per 10mA T = +25C 1.58 1.8 A Port (Interface Idle, Global Current Register Set to 0x07, One Ports Output Register Set Digital inputs at V+ or I T = T to +85C 1.9 mA +10 A MIN to 0x02 and Its Output Current GND Register Bit Cleared All Other Ports Output Registers Set to T = T to T 2 A MIN MAX 0x00, 0x01, or 0xFF) Delta Supply Current per 20mA T = +25C 3.2 3.6 A Port (Interface Idle, Global Current Register Set to 0x07, One Ports Digital inputs at V+ or I T = T to +85C 3.8 mA +20 A MIN Output Register Set to 0x02 and Its GND Output Current Register Bit Set All Other Ports Output Registers Set T = T to T 4.0 A MIN MAX to 0x00, 0x01, or 0xFF) Maxim Integrated 2 www.maximintegrated.com