STK672-740AN-E Series
Stepper Motor Driver Intelligent Power Module (IPM), Unipolar 2-Phase
Manufacturer: ON Semiconductor
Catalog
Stepper Motor Driver Intelligent Power Module (IPM), Unipolar 2-Phase
Key Features
• Protective function against over-current and over-heat is built in (Output Current OFF)
• Common-mode input protection circuit is built in
• Current detection resistors is built in
• Built-in power on reset function
• Supports schmitt input for 2.5 V high level input
• Incorporating a current detection resistor (0.141 Ω : resistor tolerance ±2%), motor current can be set using two external resistors
• The ENABLE pin can be used to cut output current while maintaining theexcitation mode
• Supports compatible pins with STK672-740AN-E
Description
AI
The STK672-440BN-E is a hybrid IC for use a unipolar, 2-phase stepper motor driver with PWM current control. It includes a built-in microstepping controller and is based on a unipolar constant-current PWM system. The STK672-440BN-E supports application simplification and standardization by providing a built-in 4 phase distribution stepper motor controller. It supports five excitation methods: 2 phase, 1-2 phase, W1-2 phase, 2W1-2 phase, and 4W1-2 phase excitations, and can provide control of the basic stepping angle of the stepper motor divided into 1/16 step units. It also allows the motor speed to be controlled with only a clock signal. The use of this hybrid IC allows designers to implement systems that provide high motor torques, low vibration levels, low noise, fast response, and high-efficiency drive. In addition the STK672-440BN-E has various protective function against over-current, over-heat, and motor terminal open. And small package type STK672-442BN-E without hole to attach a heat-sink is lined up.