The MAX4896 8-channel relay and load driver is designed for medium voltage applications up to 50V. This device is offered in a 20-pin, 5mm x 5mm TQFN package, resulting in substantial board space savings.
The MAX4896 8-channel relay driver offers built-in inductive kickback protection, drive for latching/nonlatching or dual-coil relays, and open-load and short-circuit fault detection.The MAX4896 also protects against overcurrent conditions. Each independent open-drain output features a 3Ω (typ) on-resistance, and is guaranteed to sink 200mA of load current (VS ≥ 4.5V).
A built-in overvoltage protection clamp handles kick-back-voltage transients, which are common when driving inductive loads. Thermal-shutdown circuitry shuts off all outputs (OUT_) when the junction temperature exceeds +160°C. The MAX4896 employs a reset input that allows the user to turn off all outputs simultaneously with a single control line.
The MAX4896 includes a 10MHz SPI™-/QSPI™-/MICROWIRE™-compatible serial interface. The serial interface is compatible with TTL-/CMOS-logic voltage levels and operates with a single +2.7V to +5.5V supply. In addition, the SPI output data can be used for diagnostics purposes including open-load and short-circuit fault detection.
The MAX4896 is offered in the extended (-40°C to +85°C) and automotive (-40°C to +125°C) operating temperature ranges.
Key Features
Applications/Uses
Supports Up to 50V Continuous Drain-to-Source Voltage
Guaranteed Drive Current:
VS ≥ 4.5V
200mA (All Channels On)
410mA (Individual Channels)
VS ≤ 3.6V
100mA
Built-In Output Clamp Protects Against Inductive Kickback
+2.7V to +5.5V Logic Supply Voltage
Active-Low RESET Input Turns Off All Outputs Simultaneously
Built-in Power-On Reset
Automotive Temperature Range (-40°C to +125°C)
SPI-/QSPI-/MICROWIRE-Compatible Serial Interface
Serial Digital Output for Daisy Chaining and Diagnostics
FLAG Output for µP Interrupt
Open-Load and Short-Circuit Detection and Protection
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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