MX2804

MX2804 integrates eight Darlington transistors and one H-bridge motor driver, designed for security surveillance applications to drive 2 stepper motors and 1 IR-CUT motor. MX2804 integrates eight independent high-voltage, high-current Darlington transistor arrays. Internal freewheeling diodes are incorporated for driving inductive loads such as relays and stepper motors. Each Darlington transistor collector can output 500mA. Parallel connection of Darlington transistors enables higher output current capability. Each Darlington channel is series-connected with a 2.7K base resistor, allowing direct interface with TTL/CMOS circuits at 5V operating voltage and direct handling of data that would otherwise require standard logic buffers. The H-bridge motor driver input is TTL/CMOS compatible with excellent noise immunity. The internal logic control circuit supports bidirectional motor forward, reverse, and brake control. The power transistors can conduct a continuous current with a typical value of 100mA. Built-in clamp diodes dissipate reverse surge currents from inductive loads.

Applications

• Security surveillance

Key features

• Darlington section:
• 500mA collector output current (single channel)
• High voltage tolerance (50V)
• TTL/CMOS logic signal compatible input
• ESD capability: 2000V (HBM)
• H-bridge motor driver section:
• Low quiescent current
• Wide supply voltage range: 4.5V - 15V
• Continuous current output capability per channel (typical: 100mA)
• Low saturation voltage drop
• Four output states: forward, reverse, brake, and high-impedance
• TTL/CMOS output level compatible, direct CPU connection
• Built-in clamp diodes at outputs, suitable for inductive loads
• Control and drive integrated in a single IC
• Pin high-voltage protection