MAX14912 Datasheet, PDF (1/30 Pages) Maxim Integrated Products – Low Power and Heat Dissipation

MAX14912/MAX14913
Octal High-Speed, High-Side
Switch/Push-Pull Driver
General Description
The MAX14912/MAX14913 have eight 640mA smart high-
side switches that can also be configured as push-pull
drivers for high-speed switching. The propagation delay
from input to switching of the high-side/low-side drivers is
1µs (max). Each high-side driver has a low on-resistance
of 230mΩ (max) at 500mA load current at T_A = 125°C.
The device is configured and controlled either through pins
or the SPI interface. The SPI interface is daisy-chainable,
which allows efficient cascading of multiple devices. SPI
also supports command mode, for the highest detailed
diagnostic information. The MAX14912 allows configuration
through SPI in parallel and serial setting modes, while
the MAX14913 only supports configuration through SPI in
serial setting mode.
Open-load detection in high-side mode detects both
open-wire conditions in the switch on/off states, and
LED drivers provide indication of per-channel fault and
status conditions. Internal active clamps accelerate the
shutdown of inductive loads fast in high-side mode.
The MAX14912/MAX14913 are available in a 56-pin QFN
8mm x 8mm package.
Applications
●● Industrial Digital Outputs
●● PLC Systems
●● Building Automation
Ordering Information appears at end of data sheet.
Benefits and Features
●● Low Power and Heat Dissipation
• 230mΩ (max) High-Side R_ON at T_A = 125°C
• High-Efficiency 5V/100mA Buck Regulator
●● Fast Switching Ideal for High-Speed Control Systems
• 0.1µs (typ.) Propagation Delay (High-Side Mode)
• 0.5µs (typ.) Propagation Delay (Push-Pull Mode)
• 200kHz Switching-Rate Capability in Push-Pull Mode
• Fast Inductive Load Demagnetization
●● Robust Operation
• 60V Abs Max V_DD Rating
• Safe-Demagnetization: Turn-Off of Unlimited Inductance
• IEC61000-4-2 8kV Air Gap/6kV Contact ESD Protection
• ±1kV/42Ω Surge Protection with TVS on VDD
• Robust SPI Interface with Watchdog and CRC
• -40°C to +125°C Ambient Operating Temperature
Range
●● Extensive Diagnostics Reduces System Downtime
• Per Driver and Chip Thermal Shutdown
• Open-Wire Detection in High-Side Mode
• Low Supply Voltage Warning
• Undervoltage Detection
• Overvoltage Detection on OUT
• Overcurrent Detection
• LED Drivers for Visual Fault and Output State Indication
●● Flexible Interface for Ease of Design
• Serial and/or Parallel Control Interface
• Per-Channel Configuration and Monitoring
• Wide Logic Voltage Range (1.6V to 5.5V)
●● Small Package and High Integration Enables
Compact High-Density I/O Modules
• 56-Pin QFN 8mm x 8mm Package
• Eight High-Side Switches/Push-Pull Drivers
• Daisy-Chainable SPI Interface
19-7777; Rev 3; 8/16