MX302

This product adopts an H-bridge circuit topology with high-reliability power transistor process, making it particularly suitable for driving inductive loads such as coils and motors. The circuit integrates N-channel and P-channel power MOSFETs internally, with an operating voltage range covering 8V to 32V. Under conditions of 27°C and VM = 24V, the SOP8 package delivers a maximum continuous output current of 0.5A and a maximum peak output current of 1.5A. As a power device, this circuit has inherent on-resistance, and its heat dissipation is closely related to load current, power MOSFET on-resistance, and ambient temperature. The circuit incorporates an on-chip temperature detection circuit that monitors the internal chip temperature in real time. When the internal chip temperature exceeds the set threshold (typical value 150°C), a power MOSFET shutdown signal is generated to cut off the load current, preventing continuous temperature rise caused by abnormal usage that could lead to serious safety hazards such as smoking or ignition of the plastic package. The built-in thermal hysteresis circuit ensures that control of the power MOSFETs is only re-enabled after the circuit has returned to a safe temperature.

Applications

• DC fan pan-tilt motor drive
• Surveillance equipment stepper motor drive

Key features

• Low standby current
• Low on-resistance MOSFET power switch, MOS process design, SOP8 package, 12V supply, 500mA channel power switch on-resistance 2.2Ω
• Low input current, integrated ~106K pull-down resistor to GND, average 47uA input current with 5V drive signal
• Built-in thermal shutdown (TSD) with hysteresis
• ESD rating: 2KV (HBM)