TX862 prowides an integrated DC motor drive solution for battery-powered toys, low-voltage or battery-powered motion control appications. The circuit integrates on-chip H-bridge drive circuit designed with N-channel and P-channel power MOSFETs and is suitable to drive a DC motor or a stepper motor winding. It has the wider operational voltage range (from 2V to 12.0V), its maximum continuous output currentis up to 2A, and its maximum peak output current is up to 4AThe series circuit powered by VCC and VDD separate, which VCC is logic and control power supply, VDD is power supply.
TX862 has on-chip temperature protection function. When the load current of the drive circuitis much larger than the maximum continuous current of the circuit, the junction temperature of the circuit will be increased rapidly. Once the set value (150^C) is exceeded，the intemal drculit will be closed immediately Off the output power tube, cut off the load ourrent, to avoid the temperature continued to
rise caused by plastic packaging smoke, fire and other seourity risks. Built-in temperature hysteres is circuit to ensure that the circuit is restored to a safe temperature before allowing the circuit to be re-controlled.
特点
Low standby current, low static operating current
Integrated H-bridge drive circuit
Built-in anti-common mode switching-on circuit
Low on-resis tance power MOSFET
Maximum continuous outputcurrent: 2A@VDD=12V
Maximum peak outputcurrent: . 4A@T=0.2S，D=0.25， VDD>=6V
Instantaneous withstand current: 7A@VDD=6V，about 10us
On-chip thermal shutdown(TSD)with hysteresis
Anti-static grade: 3KV (HBM)
应用
Toy motor drive with 2-4 AA 1 AAA dry cells;
Toy motor drive with 2-6 Ni-H 1 NI-Cd rechargeable batteries;
Toy motor drive with 1-2 Lithium-ion battery
