62911HKPC 018-08-0073/N2509HKIM/71608HKIM No.A1127-1/21

STK672-430A-E

Overview

The STK672-430A-E is a hybrid IC for use as a unipolar, 2-phase stepping motor driver with PWM current control.

Applications

• Office photocopiers, printers, etc.

Features

• Built-in overcurrent detection function (output current OFF).

• Built-in overheat detection function (output current OFF).

• If either over-current or overheat detection function is activated, the FAULT1 signal (active low) is output.

The FAULT2 signal is used to output the result of activation of protection circuit detection at 2 levels.

• Built-in power on reset function.

• A micro-step sine wave-driven driver can be activated merely by inputting an external clock.

• External pins can be used to select 2, 1-2 (including pseudo-micro), W1-2, 2 W1-2, or 4W1-2 excitation.

• The switch timing of the 4-phase distributor can be switched by setting an external pin (MODE3) to detect either the

rise and fall, or rise only, of CLOCK input.

• Phase is maintained even when the excitation mode is switched. Rotational direction switching function.

• Supports schmitt input for 2.5V high level input.

• Incorporating a current detection resistor (0.152Ω: resistor tolerance ±2%), motor current can be set using two

external resistors.

• The ENABLE pin can be used to cut output current while maintaining the excitation mode.

• With a wide current setting range, power consumption can be reduced during standby.

• No motor sound is generated during hold mode due to external excitation current control.

• A external excitation system is used for PWM operations. Fixed current control for shifting the phase of Ach/Bch is

used for the PWM phase.

Ordering number : ENA1127B

Thick-Film Hybrid IC

2-phase Stepping Motor Driver

Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate

the performance, characteristics, and functions of the described products in the independent state, and are not

guarantees of the performance, characteristics, and functions of the described products as mounted in the

customer

device, the customer should always evaluate and test devices mounted in the customer

equipment.

Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to

"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,

communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be

intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace

instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety

equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case

of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee

thereof. If you should intend to use our products for applications outside the standard applications of our

customer who is considering such use and/or outside the scope of our intended standard applications, please

consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our

customer shall be solely responsible for the use.