7-bit Integrated Motor and Relay Driver - DRV777


7-bit Integrated Motor and Relay Driver



DRV777 motor driver features 7 low output impedance drivers that minimize on-chip power dissipation. DRV777 supports 1.8V to 5V CMOS logic input interface thus making it compatible to a wide range of micro-controllers and other logic interfaces. DRV777 features an improved input interface that minimizes the input DC current drawn from the external drivers. Device also features an input RC snubber that greatly improves its performance in noisy operating conditions. All channel inputs feature an internal input pull-down resistor thus allowing input logic to be tri-stated. DRV777 also supports other logic input levels, e.g. TTL and 1.8V; see typical characteristics section for details.

As shown in the Functional Diagram, each output of the DRV777 features an internal free-wheeling diode connected in a common-cathode configuration at the COM pin.

Device provides flexibility of increasing current sink capability through combining several adjacent channels in parallel. Under typical conditions DRV777 can support up to 1.0A of load current when all 7-channels are connected in parallel. DRV777 is available in 16-pin SOIC and 16-pin TSSOP packages.


  • Supports up to 20V Output Pull-up Voltage
  • –;40°C to 125°C Operating Temperature Range
  • Supports Wide Range of Stepper Motors, DC Motors, Relays,
  • Low Output VOL of 0.4V (Typical) With
    • 140mA Current Sink per Channel at 5.0V Logic
    • 1A Current Output when all 7 Channels Tied
      in Parallel(1)
  • Compatible to 1.8V, 3.3V and 5.0V Micro-controllers and Logic Interface
  • Internal Free-wheeling Diodes for Inductive Kick-back Protection
  • Input Pull-down Resistors Allows Tri-stating the Input Driver
  • Input RC-Snubber to Eliminate Spurious Operation in Noisy Environment
  • Low Input and Output Leakage Currents
  • Easy to use Parallel Interface
  • ESD Protection Exceeds JESD 22
    • 2kV HBM, 500V CDM
  • Available in 16-pin SOIC and TSSOP Packages

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Parametrics Compare all products in Stepper Drivers with FETs

Vs (Min) (V)
Vs (Max) (V)
RMS Output Current (A)
Peak Output Current (A)
Control I/F
Operating Temperature Range (C)
Input RC Snubber   
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