TC78H621FNG, TC78H611FNG

Brushed DC and Stepper Motors Drivers including Single and Dual H-Bridges


  • Power supply voltage for motor : VM=18 V(Max)
  • Power supply voltage for control : VCC=6 V(Max)
  • Output current : IOUT=1.1 A(Max)
  • Output ON resistance : Ron(upper and lower sum)=0.8 Ω(Typ.)

Toshiba’s new H-bridge driver ICs for DC brushed motors are suitable for driving bipolar stepping motors with full-step controllability on 3 ports or half-step on 4 ports. The devices have a low on-resistance of 0.8Ω.

The new devices have two H-bridges with 1.1A ratings, and can drive two DC brushed motors, while the TC78H611FNG also supports short brake mode. The TC78H621FNG has Phase/Enable-Inputs, whereas the TC78H611FNG uses IN1/IN2-Input coding.

They require a logic power supply in the range of 2.7 to 5.5V and can accept motor drive voltages in the range 2.5 to 15V.

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  • Internal pull-down resistors on inputs : 200 kΩ(Typ.)
  • Built-in over current detection (ISD)
  • Thermal shutdown (TSD) circuit
  • Under voltage lockout (UVLO) circuit.
  • Built-in cross conduction protection circuit.
  • Short Brake mode ( TC78H611FNG only )
  • Current consumption in standby mode approx. 1μA (max.)
  • Small package : P-TSSOP16-0505-0.65-001


  • Home appliances
  • Point-of-sales
  • White goods
  • Housing and facility equipment
  • Ventilation
  • Water supply valves
  • Electronic lock
  • Smart meter