MAX14916: industry's smallest octal industrial 1A/quad 2A high side switch with diagnostics
The SPI interface on the MAX14916 and MAX14916A has a built-in chip addressing decoder, allowing communication with up to four MAX14916 or MAX14916A devices utilizing a common SPI chip select (CS).
The SPI interface provides flexibility for global and per-channel configuration and diagnostic, including undervoltage detection, open-wire detection, overload and current limiting reporting, thermal conditions reporting, and more.
Each channel is equipped with open-wire detection that can detect an open-load in both switch on and off states. LED drivers provide indication of per-channel fault, status, and supply undervoltage conditions. Internal active clamps allow for fast turn-off of inductive loads.
Integrated line-to-ground and line-to-line surge protection only requires a single TVS on VDD. Integrated surge protection works for quad and octal configuration.
The MAX14916 and MAX14916A are available in a compact 48-pin 6mm x 6mm QFN package.
Key Features and Benefits
- MAX14916 Current Limit, 1.1A (min) or 1.38A (typ)
- MAX14916A Current Limit, 1.5A (min) or 2A (typ)
- Robustness and Smart Diagnostics
- 65V Absolute Maximum Supply Range
- Internal Clamps for Fast Inductive Load Demagnetization
- CRC Error Checking on the SPI Interface
- Watchdog Timer
- Open-Wire Detection, with Switches Both in ON and OFF States
- Undervoltage Detection with UVLO
- Loss of VDD or GND Protection
- Thermal Shutdown Protection
- Integrated ±1kV/42Ω IEC61000-4-5 Surge Protection
- -40°C to +125°C Operating Ambient Temperature
- Reduces Power and Heat Dissipation
- 250mΩ (max) On-Resistance at TA = 125°C
- 2mA (typ) Supply Current
- Accurate Output Current Limiting
- Flexibility
- Addressable SPI Interface Reduces Isolation Cost
- SYNCH Input for Simultaneous Update of Switches
- LED Driver Matrix for 16 LEDs, Powered by 24V, 5V, or 3.3V
- Flexible Logic Voltage Interface from 2.5V to 5.5VSafety and Regulatory Approvals (Pending)
- Compact 6mm x 6mm QFN Package
Applications
- Industrial Digital Outputs
- PLC Systems
Evaluation Board
The MAX14916 can be evaluated with either the MAX14916PMB or the MAX14916EVKIT.
Block Diagrams and Tables
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